Chem Catalysis
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2026
·
IF 10.7
Yulong Zhang,Zhonghao Chen,Yajing Zhang,Wenhui Sun,Wangyin Wang,Xupeng Cao,Xin Guo,Can Li
Microbial electrosynthesis can convert CO 2 into useful chemicals, but electron transport across the cell envelope remains a major limitation. Here, we introduce periplasmic gold nanoparticles (AuNPs) in Ralstonia eutropha to facilitate transmembrane electron transfer during CO 2 conversion. The AuNPs reduce interfacial charge-transfer resistance by more than 95%, enabling more efficient delivery of electrode-derived electrons into cellular metabolism. As a result, the biohybrid system shows markedly improved CO 2 reduction performance. Product selectivity can be tuned through bioelectrode design: drop-casted electrodes favor acetate production, whereas self-assembled biofilms achieve over 90% selectivity for C 4 products, with a maximum Faradaic efficiency of 44.4%, reaching 71% of the theoretical limit for aerobic CO 2 fixation. Spectroscopic, electrochemical, and transcriptomic analyses support enhanced electron transfer and carbon metabolism. This work provides a practical strategy for wiring non-electrogenic microbes and improving microbial CO 2 conversion to multi-carbon chemicals.
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ChemSusChem
·
2026
·Vol. 19
·期 18
·e71041
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IF 5.9
Yunxia He,Qian Liu,Pei Wang,Pengxuan Wu,Jin Li,Yusong Ding,Xiaoxi Huang,Jing Li
Electrochemical CO 2 reduction to multicarbon (C 2+ ) products remains limited by sluggish CO 2 activation, inefficient C─C coupling, and competition from the hydrogen evolution reaction. Herein, we report a graphene–copper heterostructure catalyst (Gr@Cu) that significantly enhances ethylene production through rational interfacial electronic modulation. The optimized Gr@Cu 0.8 catalyst achieved a Faradaic efficiency of ~55% for ethylene (C 2 H 4 ) at −0.87 V versus RHE. Density functional theory calculations reveal that interfacial charge transfer at the Gr@Cu interface lowers the energy barriers for both the CO 2 activation and *CO dimerization, thus promoting the key C─C coupling step. Frontier orbital and d-band center analyses further demonstrate that the heterostructure elevates the Cu d-band center and improves orbital coupling with reaction intermediates, facilitating electron transfer and intermediate adsorption. This work elucidates the structure–activity relationship of graphene–metal heterointerfaces and provides mechanistic guidelines for designing advanced electrocatalysts toward efficient and selective CO 2 -to-C 2+ conversion. Graphical Through rational interfacial electronic modulation, a graphene–copper heterostructure (Gr@Cu) boosts CO 2 electroreduction to ethylene. Gr@Cu 0.8 achieves ~55% Faradaic efficiency at −0.87 V. Interfacial charge transfer lowers barriers for CO 2 activation and CO dimerization, promoting C─C coupling. The heterostructure elevates Cu d-band center, enhancing intermediate adsorption. This work provides mechanistic insights for designing efficient CO 2 -to-C 2+ catalysts.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Xinran Huang,Jianpeng Dong,Fan Yang,Mengjiao Liu,Jiayin Zhang,Ying Wang,Qi Liu,Huitao Fan,Liya Wang,Bo Li
Photocatalytic CO 2 reduction coupled with water oxidation provides a sustainable route for solar fuel production, but its efficiency is limited by insufficient near-infrared light utilization, rapid carrier recombination and weak CO 2 activation. Herein, biomass-derived nickel phytate (PA-Ni) was immobilized on lead-free double perovskite Cs 2 AgBiBr 6 (CABB) to construct a full-spectrum-responsive photocatalyst for gas-solid CO 2 photoreduction without sacrificial reagents. PA-Ni extends the optical absorption of CABB into the near-infrared region and introduces surface Ni sites for CO 2 adsorption and activation. The optimized PA-Ni@CABB (1:1) composite achieved a CO evolution of 54.9 μmol g −1 , approximately 2.5- and 6-fold higher than pristine CABB and PA-Ni. More importantly, PA-Ni@CABB (1:1) exhibited distinct near-infrared-driven CO 2 reduction activity with a CO yield of 16.3 μmol g −1 under λ ≥ 800 nm irradiation, while both individual components were almost inactive. Systematic experiments and density functional theory calculations reveal that interfacial electron transfer accelerates charge separation, favors CO 2 adsorption and *COOH generation, thereby accounting for the enhanced CO 2 photoreduction activity. This work provides a biomass-based interfacial modification strategy for designing lead-free perovskite photocatalysts with broadened solar utilization. Biomass-derived nickel phytate(PA-Ni)is immobilized on lead-free Cs 2 AgBiBr 6 (CABB) double perovskite to construct a full-spectrum-responsive photocatalyst for CO 2 reduction coupled with water oxidation. PA-Ni extends light absorption into the near-infrared region through Ni 2+ d–d transitions, promotes interfacial electron transfer, and provides Ni active sites for CO 2 adsorption and activation, thereby enabling efficient and selective CO evolution. Download: Download high-res image (74KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Mengmeng Zhou,Jian Jiao,Ling-E Zhao,Yu Zhang,Hao Zhu,Jiahui Yao
Hierarchical PVA–SiO₂ foam ceramics with 93.67% porosity were developed. • Interconnected pores (228 m 2 ∙g −1 ) enhance amine utilization and mass transfer. • CO 2 adsorption capacity reaches 236.76 mg/g at 25 °C. • Stable performance with <7.5% capacity loss after 8 cycles. Solid amine porous adsorbents efficiently capture CO 2 through physical and chemical mechanisms, and are widely employed in CO 2 absorption. However, they suffer from drawbacks including insufficient stability, susceptibility to mass transfer channel blockage and high costs. Therefore, this study developed a novel strategy based on a polyvinyl alcohol (PVA)/silica sol hybrid system for the preparation of hierarchical porous foam ceramics (PVA-FC). The PVA-silica sol hybrid foam was sintered at 500 °C, and silica foam ceramics with coral-like micro/mesoporous pore walls were obtained. The PVA-FC exhibits a high porosity (93.67%), large specific surface area (228 m 2 ·g −1 ), and robust mechanical properties (compressive strength of 1.25 MPa) at 20% PVA loading. After loading with amine, the CO 2 adsorption capacity of the adsorbent is 236.76 mg·g −1 at 25 °C and 0.1 MPa. After eight adsorption-desorption cycles, it retained a capacity of 218.98 mg·g −1 (with a decay rate of <7.5%). The organic-inorganic hybridisation method was applied to the preparation of silica foam ceramics with micro/mesoporous foam walls. The macroporous and foam pore structures of the adsorbent improved the transport capacity for TEPA and CO 2 , while the high specific surface area enhanced the active sites for adsorption, resulting in highly efficient CO 2 capture. Download: Download high-res image (318KB) Download: Download full-size image
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Xingwei Xie,Jianpeng Li,Qiufeng Liu,Kaihang Sun,Kun Lu,Saibo Yang,Fei Chen,Chenyang Shen,Longzhou Zhang,Zhourong Xiao,Young Dok Kim,Zhongyi Liu,Zhikun Peng
Oxide-oxide interaction plays a vital role in regulating the electronic structure of supported metal in the oxide-supported metal catalysts, thereby strongly relating to CO 2 hydrogenation efficiency. Although oxide-oxide interface offers a potential way to tailor metal-Ov synergy for boosting CO 2 hydrogenation, its specific effects on the distribution of metal in different states are still ambiguous. Herein, we engineer a CeO 2 -Y 2 O 3 interface to modulate Ov formation and electronic features of supported Cu nanoparticles. The CeO 2 -Y 2 O 3 interaction also facilitates charge transfer and tunes adsorption behavior. The catalyst with the highest Cu + species and a considerable amount of Ov achieves the intensified Cu + -Ov synergy, exhibiting a superior activity and catalyst stability for the reverse water-gas shift reaction. The present work provides a feasible strategy to trigger metal‑oxygen vacancy synergy for boosting CO 2 hydrogenation reactions.
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PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Xingman Shan,Guanran Zhao,Yaohao Guo,Linfeng Lei,Zhi Xu
The regeneration of CO 2 -loaded solvents remains intrinsically energy-intensive and represents a major bottleneck in carbon capture. Here, we develop a Joule-heated carbon hollow fiber membrane (CHFM) to enable rapid and energy-efficient CO 2 desorption from ethanolamine (MEA) via a membrane flash process. Benefiting from the intrinsic electrical conductivity of the porous carbon matrix, thermal energy is generated directly within the membranes by a self-Joule-heating, delivering localized heating at the desorption interface and thereby effectively mitigating temperature polarization. Meanwhile, the highly porous membrane structure provides abundant nucleation sites that promote rapid CO 2 phase transition within the membrane wall. Compared with the conventional external heating method, the Joule-heated mode achieves more than a twofold enhancement in CO 2 desorption performance at ∼70 °C. Specifically, a CO 2 flux of 0.096 mol m -2 s -1 and a desorption ratio of 22% are obtained with a short residence time of 2 s. The specific equivalent energy consumption is reduced to 0.64 MJ kg -1 CO 2 , substantially lower than that of conventional industrial regeneration processes. This study demonstrates a robust membrane-based route for intensified and scalable CO 2 solvent regeneration.
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Journal of Advanced Dielectrics
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2026
·
IF 3.3
Hong Xiang,Jindong Liu,Fulei Tang,Ziang Liu,Jiaojiao Zheng,Peihong Ma,Meidan Que,Jian Wei,Yao Wang,Sai Liu
Photocatalytic CO 2 reduction technology is a promising new way to convert CO 2 into high value-added chemicals and fuels by sunlight. However, there are still some problems in the practical application of this technology, such as low yield, poor catalyst stability and excessive by-products. To solve these problems, TS-HF- x Pt series photocatalysts were successfully prepared by sol-gel method, HF etching process and photodeposition technology. The TS-HF-0.7Pt catalyst showed more excellent catalytic performance, and the methane yield reached 86.084 μmol·g -1 ·h -1 , which was 32.2 times that of TS-HF. The performance test shows that the surface plasmon resonance (SPR) effect of Pt significantly broadens the light absorption range, inhibits the recombination of photogenerated electron-hole pairs, reduces the charge transfer resistance, and improves the carrier utilization efficiency, thereby promoting the absorption of CO 2 . This reveals the great potential of Pt loading in improving the catalytic performance of TS-HF.
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ChemNanoMat
·
2026
·Vol. 12
·期 1
·e202500755
·
IF 2.6
Xihui Yang,Dapeng Meng,HaoZe Liu,Zikun Yang,Anyu Zhang,Zhao Wang
The catalytic performance of metal oxides is profoundly influenced by their crystal phase, yet the underlying mechanism often remains elusive. Herein, we systematically investigate the crystal-phase-dependent activity of indium oxide (In 2 O 3 ) for the electrocatalytic CO 2 reduction reaction (CO 2 RR) to formate. Through a solvent-controlled hydrothermal synthesis, we prepared phase-pure cubic (c-In 2 O 3 ) and hexagonal (h-In 2 O 3 ) polymorphs. Electrochemical evaluations reveal that h-In 2 O 3 significantly outperforms c-In 2 O 3 , achieving a superior formate Faradaic efficiency of 86.3% at −0.8 V versus reversible hydrogen electrode and demonstrating a notably higher partial current density across a wide potential window. In situ attenuated total reflection surface-enhanced infrared absorption spectroscopy identifies a more intense signal for the *OCHO intermediate on h-In 2 O 3 , indicating facilitated reaction kinetics. Density functional theory calculations reveal the origin of this enhancement: the predominant (104) facet of h-In 2 O 3 not only strengthens CO 2 adsorption but also significantly lowers the energy barrier for the formation of the *OCHO intermediate, the rate-determining step. Furthermore, this facet concurrently suppresses the competing hydrogen evolution reaction and CO pathway. This work elucidates the intrinsic advantages of the hexagonal phase in In 2 O 3 -based CO 2 RR electrocatalysts, providing a fundamental principle for catalyst design via crystal-phase engineering.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Niankun Guo,Tianjing An,Zhaohao Li,Dan Gao,Jiaxi Yang
The chemical absorption and the physical adsorption constitute primary mechanisms in conventional CO 2 capture methods. This work proposes a novel porous ionic liquid synthesized by coupling these two mechanisms to enhance the CO 2 capture performance. Specifically, [TEPA][N-MIm] reacts with CO 2 to form carbamate species, while ZIF-8 nanoparticles are incorporated to construct stable cavity structures within the solution, providing physical adsorption sites for CO 2 . Based on CO 2 capture experiments and bubble dynamics high-speed photography experiments, CO 2 capture processes by [TEPA][N-MIm] consist of three phases: the rapid reaction phase, the slow capture phase, and the stabilization phase. Generally, improving the CO 2 mass transfer performance through methods such as increasing flowrate also enhances the capture performance. However, temperature elevation introduces more complex effects: The chemical reaction rate and the physical solubility exhibit opposing trends, and the CO 2 capture performance varies among different types of PILs. Additionally, when the solution temperature reaches a specific threshold, partial carbamate begins to decompose, leading to the stabilization of the CO 2 capture capacity.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Lidong Wang,Chuanren Li,Zhengwei Liang,Juan Sun,Guangfei Yu,Lei Xing,Jingxiang Zhang,Lin Zhang,Qiangwei Li,Tieyue Qi,Shanlong An,Hongqi Jiang,Qiang Jing
Amine scrubbing is the state-of-the-art CO 2 capture technologies to mitigate the artificial CO 2 emissions, while suffers from the high energy consumption and amine thermal-degradation during regeneration process under the high temperature (localized hyperthermia ranges from 135 to 150 °C). Utilization the polarity of microwave irradiation can selectively active dipole-bearing N C bond in amine reactants, and thus reduce the regeneration temperature and energy input. However, the strong polarity of H 2 O severely attenuates the targeted application of microwave energy. Compared eight single amines, binary solvent blends and ternary solvent blends, we develop a microwave-assisted amine regeneration strategy and introduce a ternary composite amine (AMP/EAE/MDEA/H 2 O) solvent with a ratio of 3:2:1:14(based on weight percentage, wt%). The optimal blend possesses strong microwave responsiveness, demonstrating superior CO 2 absorption capacity, CO 2 desorption kinetics and energy consumption properties. Kinetic and characterization investigations reveal that the polarity and permittivity of amines are key determinants of amine regeneration performance. Bench-scale continuous CO 2 absorption-desorption experiments show that compared to traditional thermal regeneration processes, this technology reduces regeneration temperature by 10–15 °C and decreases energy consumption by 38.3% and amine thermal degradation by 92.2%, suggesting significant potential in low-energy and robust CO 2 capture for the future success of Paris Climate Accord.
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Journal of Energy Chemistry
·
2026
·
IF 15.6
Nianxue Zhai,Na Li,Jing Zhou,Fayi Jin,Chengkun Ling,Jiancheng Wang,Shan Gao,Riguang Zhang,Xiaoli Yang,Xingyun Li
The reverse water-gas shift (RWGS) reaction represents a central strategy for CO 2 utilization, yet conventional catalysts often require high temperatures and exhibit poor selectivity due to complex mechanisms. Here, we report a carbon-doped molybdenum nitride (Mo–N–C) catalyst that enables a redox-dominated RWGS pathway under mild conditions. Structural and electronic analyses reveal that carbon incorporation modulates the Mo oxidation state and induces the coexistence of Mo–N and Mo–C coordination, creating an optimized electronic environment for CO 2 activation. In-situ DRIFTS and quasi-in-situ XPS, supported by DFT calculations, demonstrate that CO formation proceeds via CO 2 direct dissociation rather than hydrogen-assisted dissociation, confirming a redox-mediated mechanism. This unique electronic configuration allows MoNC to achieve 21.7% CO 2 conversion and 98.4% CO selectivity at 400 °C, with outstanding stability over 100 h. The findings establish C–N synergistic coordination as a broadly applicable design principle for electronic-state tuning in non-noble metal catalysts for CO 2 reduction. A carbon-doped molybdenum nitride catalyst exhibits excellent performance in the reverse water gas shift reaction by following a redox reaction pathway. Download: Download high-res image (82KB) Download: Download full-size image
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ACS Catalysis
·
2026
·Vol. 16
·期 16
·16055-16065
·
IF 13.6
Wang Yanlin,Gu Panpan,He Ruoyan,Xue Qizhou,Cheng Aofei,Liu Xiang,Zeng Shaojuan,Wang Min,Zhang Zhenlei,Zhang Kaihang,Feng Jiaqi,Zhang Xiangping
The electrochemical CO 2 reduction reaction (CO 2 RR) is a proton−electron coupled transfer process in which active hydrogen (*H) plays a pivotal role in determining the reaction pathways, particularly for methane (CH 4 ), a representative deep hydrogenation product. However, how *H generation and migration govern CH 4 formation remains elusive, motivating mechanistic elucidation to enable rational regulation of reverse hydrogen spillover. Herein, we develop Cu-doped ZrO 2 catalysts and reveal that tuning the crystallinity of the ZrO 2 support enables control over the reverse hydrogen spillover process. Specifically, amorphous ZrO 2 functions as an efficient “hydrogen pump” by promoting *H generation and lowering the migration barrier toward adjacent Cu sites, thereby strengthening the reverse hydrogen spillover effect. This effect establishes an optimal *H coverage for deep hydrogenation of CO 2 , thereby reducing the energy barriers for key intermediates along the CH 4 formation pathway. Consequently, the Cu-doped amorphous ZrO 2 catalyst delivers a CH 4 Faradaic efficiency of 69.3% with a partial current density of −372.8 mA cm −2 , significantly surpassing that of its crystalline analogue. This work highlights that engineering the crystallinity of metal oxide supports provides an effective strategy to regulate reverse hydrogen spillover in electrocatalysis, offering valuable insights into controlling catalytic activity and product selectivity.
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