Nature Communications
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2026
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IF 18.1
Zhang Weiluo,Zhang Yilei,Wan Da,Gao Junrong,Zheng Shuling,He Jie,Cai Huizhu,Zhang Xue,Hu Qi,Yang Hengpan,He Chuanxin
Silver is an extensively investigated electrode material for electrochemical CO 2 reduction owing to its high electrical conductivity and structural stability. However, a key limitation of silver catalysts is their weak adsorption of the *CO intermediate. This intrinsic constraint restricts the reaction primarily to two-electron pathways, hindering the formation of multi-electron products. Here we demonstrate that surface molecular modification can address this limitation. By anchoring bromothymol blue molecules onto the silver surface, we engineer a localized hydrogen-bonding network that stabilizes *CO intermediates via O···H–O interactions, prolonging their surface residence time. In situ spectroscopy and theoretical simulations reveal that this local microenvironment thermodynamically stabilizes *CO against desorption while kinetically facilitating its subsequent hydrogenation and C-C coupling. Consequently, the retained *CO undergoes deeper reduction pathways, generating CH 4 , C 2 H 4 , C 2 H 5 OH, and CH 3 COOH. At a current density of 400 mA cm −2 , the Faradaic efficiency for multi-electron products reaches 24.2%. This work shifts the design paradigm from metal-centric electronic tuning to local microenvironment engineering, offering an alternative strategy for enabling multi-electron transfer on non-copper catalysts.
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Sijia Pang,Xudong Zheng,Zhouzhou Yang,Wei Sun,Shijie Wang,Jinfeng Mei,Jian Rong,Zhongyu Li
Green sol-gel/supercritical drying yields amine-modified silica-titania aerogel. • Uniform TiO 2 & amine grafting via terephthalic acid and ammonia/fluoride. • High CO 2 uptake (3.88 mmol g −1 ) and excellent stability (>88% after 10 cycles). • Solar-driven photocatalytic CO production (34.6 μmol g −1 h −1 ) via Ti-O-Si junction. To address the global climate crisis caused by carbon dioxide (CO 2 ) emissions, achieving “carbon neutrality” requires the construction of an efficient artificial carbon cycle. However, traditional carbon capture and utilization technologies have bottlenecks. Using tetrabutyl titanate, terephthalic acid and tetraethyl orthosilicate as precursors, amine modified silicon titanium composite aerogel was successfully prepared by using sol gel method combined with supercritical drying technology and the introduction of ammonia and ammonium fluoride. Systematic characterization reveals that the specific surface area of this sample is as high as 548.12 m 2 g −1 , and it simultaneously achieves an adsorption capacity of 3.88 mmol g −1 , exhibiting excellent adsorption properties and outstanding cyclic stability. In the CO 2 photoreduction performance test, STA-300 exhibited excellent synergistic effects of adsorption and photocatalysis. The principle is that the surface amino group enriches CO 2 molecules through chemical adsorption, improving the local concentration of active sites, TiO 2 components are stimulated by light to produce photogenerated electrons, and the enriched CO 2 is activated by photogenerated electrons and reduced to CO. This study provides an effective strategy for designing composite aerogel materials with both adsorption enrichment and photocatalytic conversion functions.
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高影响因子
Petroleum
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2026
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IF 5.5
Xiaogang Li,Chuan Wang,Jingyi Zhu,Zhaozhong Yang,Liehui Zhang,Jiang Wu,Liangping Yi,Min Jia,Zhiqi Liu,Jian Zheng,Dong Xia
An ultralow-density composite proppants suitable for SC-CO 2 fracturing were prepared • High sphericity, apparent density ≤1.18 g/cm 3 , and crushing rate ≤ 2.31% at 69 MPa • Sedimentation rate is 6 times slower than that of ceramsite in SC-CO 2 environment • Maintaining a relatively high conductivity of 6.98 μm 2 ·cm under 96.5MPa : Conventional proppants used in supercritical carbon dioxide (scCO 2 ) fracturing suffer from rapid settling and poor fracture conductivity due to the extremely low viscosity of scCO 2 , which severely limits proppant transport and fracture effectiveness. To overcome these limitations, an ultra-low density poly(methyl methacrylate)/graphite (PMMA/G) composite proppant suitable for scCO 2 fracturing was prepared via in situ suspension polymerization. The physicochemical, mechanical, and thermal properties, as well as fracture conductivity and scCO 2 resistance, were systematically characterized. Incorporation of 2.0 wt.% graphite significantly enhanced compressive strength (crush rate≤2.31% at 69 MPa), thermal stability (glass transition temperature increased to 129.53 °C), and sphericity (≥0.90), while maintaining an apparent density≤1.18 g/cm 3 . After 12 h of exposure to scCO 2 , the composite proppant exhibited minimal swelling and retained structural integrity with only a slight increase in crush rate. Sedimentation tests showed a settling velocity of 3.55 cm/s—approximately six times slower than that of conventional ceramic proppants—demonstrating excellent suspension and transport capability. Furthermore, the PMMA/G proppants maintained a relatively high fracture conductivity of 6.98 μm 2 ·cm under 96.5 MPa, confirming their outstanding load-bearing performance. These results demonstrate that the PMMA/G composite proppant provides a promising material solution for efficient and sustainable scCO 2 fracturing in unconventional reservoirs. Download: Download high-res image (263KB) Download: Download full-size image
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Xuebing Wang,Bin Jiang,Shuai Yin,Xiemin Liu,Meisi Chen,Feng Zhang
Dual-active-site PIL-based phase-merging absorbent (TDPH) for efficient CO 2 capture. • High CO 2 loading (4.32 mol·kg −1 ) and rapid absorption via synergistic proton transfer. • Proton transfer mechanism revealed by NMR, titration and DFT calculations. • Regeneration energy reduced to 1.82 GJ·t −1 . During the CO 2 capture process with amine-based absorbents, proton transfer can effectively regulate the absorption performance, especially the absorption rate and the composition of the products. In this study, by using lysine anion (Lys − ) and 3-dimethylaminopropyl ammonium (DMAPAH + ) as the anion and cation of a protic ionic liquid (PIL), respectively, a biphasic system (TDPH) was constructed with aqueous solutions of N , N , N ′, N ′-tetramethyl-1,6-hexanediamine (TMHDA) and PIL, which presents a rich and effective proton transfer network for efficient CO 2 capture. Lys − and DMAPAH + jointly form a dual-active-site network, creating a rich proton-transfer microenvironment that facilitates proton migration, thereby achieving a high CO 2 loading (4.32 mol/kg). Moreover, during the absorption process, TMHDA accepts protons, inducing the original two phases to merge into one phase, thereby reducing the viscosity of the absorbent. Accordingly, compared to the single-active-site system, the CO 2 loading of TDPH is increased by 20.6%, while the absorption equilibrium time is reduced by 50.1%, with the regeneration energy consumption being only 1.82 GJ/ton CO 2 . NMR, titration and quantum chemical calculations confirm that Lys − and DMAPAH + synergistically participate in the proton transfer process toward TMHDA, forming multiple CO 2 binding sites, and enhancing phase merging during absorption and phase separation during desorption. This work demonstrates that the dual-active-site functionalization strategy is an effective approach for harnessing the potential of phase-transition ionic liquids and designing highly efficient, low-energy-consumption CO 2 absorbents.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Ji Liu,Long-peng Fang,Yuan-gu Xia,Meng-fan Liu,Jia-he Wang,He-ming Liu,Bin Hu,Kai Li,Zhen-xi Zhang,Qiang Lu
Trace Ag (Ag/Cu = 0.001) significantly enhanced Cu-Zn catalyzed CO 2 hydrogenation. • STY MeOH of Cu-Zn-Ag 0.001 was 467.8 g·kg −1 ·h −1 , 1.82 times higher than Cu-Zn. • Ag promotes oxygen vacancy formation around active sites at the Cu-ZnO interface. • Methanol synthesis follows the formate pathway with Ag lowering energy barriers. The methanol synthesis from catalytic CO 2 conversion has emerged as an attractive strategy for carbon valorization and sustainable energy generation. However, the catalytic efficiency of conventional Cu-Zn-based catalysts remains far from satisfactory. Herein, a Cu-Zn-Ag catalyst, synthesized via a facile co-precipitation method, exhibited a significantly improved methanol production activity compared with Cu-Zn catalysts. Notably, a trace amount of Ag doping (the Ag/Cu molar ratio was 0.001) could significantly elevate the methanol generation, with its space-time yield increasing from 258 ± 17 to 468 ± 23 g MeOH ·kg cat −1 ·h −1 , an increase of 1.82 times, while further increasing Ag doping would lead to reduced activity. Structural characterizations confirmed the Ag presence, being doped in the Cu lattice, and Ag doping was significantly beneficial to oxygen vacancy formation, which was deemed the active sites for methanol formation. The detailed reaction pathway (formate pathway) for methanol synthesis was also investigated based on density functional theory (DFT) calculations, where Ag doping lowered the energy barriers. This work elucidates the mechanism of Ag doping in Cu-Zn catalysts and provides key insights into the reaction mechanism of CO 2 hydrogenation to methanol, highlighting its potential for sustainable methanol synthesis. Download: Download high-res image (177KB) Download: Download full-size image
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高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
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2026
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IF 7.9
Yuantao Xie,Xiaoxin Feng,Yuan Jia,Chenguang Hu,Ruiying Bai,Xiufang Sun,Gang Liu,Qiuming Li
Steel production poses dual environmental challenges: significant CO 2 emissions and the generation of steel-making slag (SS), a major solid waste. Meanwhile, the low value utilization of SS results in the loss of calcium (Ca) resources. Utilizing Ca-containing SS to mineralize and solidify CO 2 is expected to achieve dual benefits of carbon reduction and solid waste utilization. In this paper, the feasibility of SS CO 2 absorption was investigated using an indirect mineralization method. A leaching solution was prepared by dissolving SS with ammonium chloride (NH 4 Cl), which was then used for CO 2 absorption, with bubbling absorption as the primary carbonation method. The variation in outlet CO 2 concentration during carbonation was monitored to characterize the reaction behavior at different stages. The effects of CO 2 concentration, leaching solution pH, gas flow rate, and absorption configuration on CO 2 absorption behavior were systematically investigated. Among the tested bubbling configurations, the two-stage system exhibited the best overall performance, achieving a cumulative CO 2 uptake of 0.38 g CO 2 ·L⁻¹ of leaching solution. In addition, a spray-assisted carbonation method was explored, demonstrating enhanced gas–liquid contact characteristics and potential for further process development.
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高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2026
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IF 4.4
Feng-Jun Zhang,Zi-Han Yang,Xue-Qin Zhou,Huan Li,Won-Chun Oh
Successful synthesis of Bi 3 O 4 Br/Bi 2 WO 6 type-II heterojunction photocatalyst. • Stability and CO₂ reduction activity of the as-prepared materials. • Bi 3 O 4 Br/Bi 2 WO 6 –20 exhibits best performance, achieving CO production rate of 13.73 μmol·g −1 h −1 . • Demonstration of closed junctional contact and synergistic effect of type-II heterojunction. The development of efficient, stable, and highly selective catalysts is of great importance for the photocatalytic reduction of CO 2 . However, the inefficient separation and transfer of photogenerated charge carriers remain a major challenge for Bi-based photocatalysts. In this work, Bi 3 O 4 Br/Bi 2 WO 6 type-II heterojunction photocatalyst via a two-step approach, and its photocatalytic CO 2 reduction performance was systematically investigated. The results shin that Bi 3 O 4 Br/Bi 2 WO 6 –20 exhibits best performance, achieving CO production rate of 13.73 μmol·g −1 h −1 and is approximately 2.09-fold compared with pure Bi 3 O 4 Br and 2.05 -fold compared with pure Bi 2 WO 6 , while maintaining nearly 100% CO selectivity. Based on the experimentally determined band structures and complementary spectroscopic and photoelectrochemical results, a possible type-II charge-transfer pathway is proposed to account for the enhanced CO 2 photoreduction performance. In addition, composite demonstrates excellent stability during photocatalytic process. This study provides an effective strategy for facile construction of efficient CO 2 reduction photocatalysts. Download: Download high-res image (176KB) Download: Download full-size image
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高影响因子
Advanced Energy Materials
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2026
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IF 25.5
Zhaorui Kong,Xinyi Wan,Meng Li,Bin Hua
Controlling the dynamic reconstruction of oxide-derived catalysts is critical for electrochemical CO 2 reduction because their active structures are often metastable under cathodic conditions. For SnO 2 -based catalysts, partial reduction generates reconstructed SnO 2 /Sn interfacial structures that favor formate production, whereas excessive reduction to metallic Sn destroys these interfaces and promotes hydrogen evolution. Here, we develop a dopant-regulated reconstruction strategy in which low-valence, high-electronegativity Bi acts as an electronic brake to modulate SnO 2 reduction kinetics. The optimized Bi0.2 catalyst delivers a formate Faradaic efficiency above 93% for more than 130 h at 250 mA cm −2 in a flow cell and maintains robust performance across diverse electrolyte environments. In situ and ex situ structural/electronic characterizations show that Bi incorporation mitigates deep SnO 2 reduction and helps preserve the reconstructed SnO 2 /Sn interface under cathodic operating conditions. In situ Raman spectroscopy and attenuated total reflection surface-enhanced infrared absorption spectroscopy measurements reveal potential-dependent changes in the interfacial water environment and support the involvement of activated CO 2 -related and * OCHO-related species in formate formation. Density functional theory calculations further show that Bi lowers the largest uphill Gibbs free-energy step for * OCHO formation while increasing that for the competing hydrogen evolution reaction pathway. These results establish dopant-regulated reconstruction and interfacial proton-coupled reaction regulation as design principles for sustainable CO 2 valorization.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Lei Shu,Dan-Dan Chen,Can Li,Yun-Lei Teng,Bao-Xia Dong
Covalent organic frameworks (COFs) incorporating metalloporphyrin units have gained significant attention as electrocatalysts for CO 2 reduction. However, conventional phenylporphyrin-based COFs are fundamentally limited by narrow pore sizes (<3 nm), which impose severe mass transfer resistance and impede catalytic turnover. Herein, we report a biphenyl porphyrin-based COF (DpPor-COF) with an expanded pore size of ∼3.8 nm, constructed from 5,10,15,20-tetra(4-formylbiphenyl)porphyrin and p -phenylenediamine. Subsequent metallation with Fe 3+ , Co 2+ , and Ni 2+ furnishes atomically dispersed M–N 4 sites (M-DpPor-COF), effectively suppressing metal leaching while expanding the electrochemical active surface area. Among the series, Co-DpPor-COF delivers a CO Faradaic efficiency (FE CO ) of 94% at −0.65 V vs. RHE with a high turnover frequency (TOF) of 477 h −1 , and maintains stable operation over 120 h. In situ infrared spectroscopy and DFT calculations reveal that transition metal centers lower the energy barrier for key intermediate steps in CO 2 -to-CO conversion, enhance charge density at the porphyrin core, and facilitate CO desorption. This work establishes a versatile strategy for concurrent pore engineering and active-site optimization, offering valuable insights for designing next-generation porous electrocatalysts. A biphenyl-porphyrin COF with an expanded 3.8 nm pore size is synthesized via the condensation of 5,10,15,20-tetra(4-formylbiphenyl)porphyrin and p -phenylenediamine, followed by metalation to introduce atomically dispersed M-N 4 sites, which delivers 94% CO Faradaic efficiency, 477 h −1 TOF and 120 h stability for efficient CO 2 electroreduction. Download: Download high-res image (175KB) Download: Download full-size image
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高影响因子
WASTE MANAGEMENT
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2026
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IF 7.3
Yunfeng Liu,Lu Yao,Xuechun Yang,Zheng Jiao,Nianci Guan
Li was fully extracted; Ni, Co and Mn recoveries exceeded 97 %. • 0.30 M ascorbic acid enabled leaching without additional reducing agents or heating. • Pressurized CO 2 enhanced ascorbic-acid leaching beyond physical pressurization. • Product-layer diffusion best described the overall leaching kinetics. • Leachate-derived NCM811 retained 150 mAh/g after 200 cycles. The recovery of critical metals from spent Ni–Co–Mn (NCM) cathodes commonly requires concentrated acids, auxiliary reductants, or energy-intensive treatment. Here, pressurized CO 2 –ascorbic acid leaching was integrated with leachate-based NCM811 regeneration. Under the optimized condition, 0.30 mol/L ascorbic acid, 7 MPa CO 2 , a solid-to-liquid ratio of 20 g/L, and 25 °C, Li was completely extracted within 80 min, while the extraction efficiencies of Ni, Co, and Mn reached 98.3 %, 97.1 %, and 97.2 %, respectively, without a separately added reducing agent. Control experiments confirmed that the increase in metal extraction arose from the coupled action of pressurized CO 2 and ascorbic acid rather than from physical pressurization or CO 2 alone. Equilibrium analysis further indicated that ascorbic acid provided the principal acidity and reducing capacity, while the dissolved CO 2 /H 2 CO 3 /HCO 3 – equilibrium can maintain protons availability during lattice dissolution. Kinetic fitting showed that the leaching behavior was best described by the product-layer diffusion model. SEM–EDS, XRD, and XPS revealed particle fragmentation, progressive disruption of layered structural order, and changes in surface valence states. The Li/Ni/Co/Mn-rich leachate was further converted into regenerated NCM811, which delivered discharge capacity of 180 mAh/g initially, retained 150 mAh/g after 200 cycles, and maintained 55–60 mAh/g at 5C. This approach achieves high metal extraction at room temperature using a relatively low organic-acid concentration without separately added reducing agent, while returning the recovered metals to functional cathode production. Download: Download high-res image (220KB) Download: Download full-size image
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Longmei Li,Feiyang Hu,Xiuxing Cai,Tingrui Zeng,Qing Liu,Runping Ye,Lei Gong,Rongbin Zhang,Gang Feng
Uniformly dispersed and confined hm-Ni/CeO 2 catalysts were synthesized for CO 2 hydrogenation. • The hm-Ni/CeO 2 outperforms its mesoporous counterpart, reaching 84.56% CO 2 conversion at 325 °C with good stability. • The hm-Ni/CeO 2 possesses abundant oxygen vacancies and a higher Ni distribution. • In-situ DRIFTS and DFT studies confirmed that the enhanced methanation performance originates from oxygen vacancies promoting the formate pathway. Confined structure catalysts are widely dedicated to boosting catalytic activity and stability , while controlling their micro-environment and intermediate species remains a challenge. Herein, mesoporous (m-Ni/CeO 2 ) and hollow mesoporous (hm-Ni/CeO 2 ) catalysts were prepared via electrospinning and evaluated for CO 2 hydrogenation to methane. The hm-Ni/CeO 2 catalyst exhibits superior performance, achieving 84.56% CO 2 conversion at 325 °C, along with enhanced low-temperature activity compared to the m-Ni/CeO 2 catalyst. Characterizations revealed that the hm-Ni/CeO 2 catalyst possesses a higher oxygen vacancies and improved Ni dispersion, thereby enhancing metal-support interaction. Furthermore, synchrotron radiation and in-situ DRIFTS confirmed that the hm-Ni/CeO 2 catalyst facilitates the formation of bridging bidentate formate intermediates, which are more favorable for CH 4 production. Finally, DFT verified the predominance of the formate pathway and revealed that oxygen vacancies substantially enhance the reactivity of CO 2 methanation. This work not only develops a novel synthetic strategy for confined porous catalysts but also provides fundamental insights into the role of oxygen vacancies in CO 2 hydrogenation. Download: Download high-res image (203KB) Download: Download full-size image
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高影响因子
CHEMICAL ENGINEERING SCIENCE
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2026
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IF 5.1
Zhuobin Mo,Wenfei Long,Yutian Zhang,Ningce Zhang,Jiale Sun,Shuxuan Liu,Shuai Chen,Haiqi Liang,Chao Liu,Luyao Ma,Shengnan Liu,Bohua Ren,Shuangyin Wang,Guobin Wen
Electrochemical CO 2 reduction to CO represents a promising avenue for generating value-added chemicals and achieving global carbon neutrality. However, mass transport plays a significant role in the expression of catalytic intrinsic activity which further restricts the selectivity promotions. Herein, we engineered a grooved electrode to enhance mass transport of dissolved CO 2 in the batch cell, inspired by the chimney effect, a phenomenon that drives the diffusion of species from high-concentration to low-concentration regions via the concentration gradient in the vertical direction. This structure enhances the diffusion depth of reactants within the catalyst layer by increasing the vertical concentration gradient, thereby effectively reducing CO 2 dead zones in the electrode. Through multiphysics modeling, we optimized groove geometry, creating a special grooved electrode that that further reduces CO 2 dead zones. Comparative analysis revealed that increasing the catalyst loading to 20% resulted in CO Faradaic Efficiency improvements of 26% for parallel-grooved electrodes, and 50% for special-grooved electrodes, significantly improving CO conversion in H-cell reactors. And in flow cell tests, the special-grooved electrode maintained a FE CO of 81% at a current density of 150 mA cm −2 , outperforming the other two electrodes.
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高影响因子
危险品化学品经营许可证（带存储）