CHINESE JOURNAL OF CATALYSIS
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2026
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IF 17.7
Juxia Xiong,Hao Ma,Yingjun Dong,Benjamin Liu,Xiangji Zhou,Linbo Li,Yuanmiao Sun,Xiaolong Zhang,Hui-Ming Cheng
Bi-based catalysts are known to promote the electrochemical reduction of CO 2 to formic acid (HCOOH) or formate (HCOO − ). However, their implementation presents challenges: the first H + /e − pair transfer to form the key *OCHO intermediate on a Bi surface is a slow, kinetically sluggish endergonic process, resulting in a large overpotential and narrow potential window for high HCOOH/HCOO − selectivity. Altering the localized p -orbital electron states of Bi to change intermediate binding behaviors is difficult. We addressed this problem by using an in-situ polymerization method to obtain a polyaniline-Bi hybrid (PANI-Bi) with Bi surrounded by PANI chains. Combined experimental and computational studies indicate that the polyaniline acted as an “electron pump” that facilitated charge transfer from the PANI backbone to the Bi surface and changed the p -orbital electrons of the Bi active sites. This lowered the energy barrier for the adsorption of intermediates and facilitated *OCHO formation. Consequently, a significant increase in formate production was observed, achieving a single-pass carbon efficiency exceeding 48.7% at 800 mA cm −2 . This organic functionalization strategy, aimed at modifying the electronic structure of heterogeneous catalysts, offers a promising approach for achieving highly selective electroreduction of CO 2 at a high current density.
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高影响因子
Polymers
·
2026
·Vol. 18
·期 6
·740
·
IF 5.8
Jin Li,Zhongyong Su,Tiantian Jia,Kai Liu,Liulian Huang,Fang Huang,Xiaolin Luo,Jianguo Li,Qingxian Miao
It is essential to develop a practical technology for the separation and capture of carbon dioxide (CO2) due to the gradually increased concentration of CO2in the atmosphere, which has driven the rise in global temperature. Membrane separation is regarded as a promising technology for the capture of CO2. However, most membranes employ non-biodegradable petroleum-based polymers. In this study, biodegradable and renewable membranes of cellulose acetate (CA) doped with polyethylene glycol (PEG) and polyethylene glycol diacrylate (PEGDA) were fabricated by solution casting and used for the separation of CO2/O2. The results indicated that the membrane doped with PEGDA exhibited higher permeability of CO2and selectivity of CO2/O2compared to those doped with PEG, while improving the tensile strain and structural uniformity of membranes. The membrane with a thickness of 25 μm at a PEGDA dosage of 10 wt% achieved optimal gas permeability, selectivity, and mechanical toughness, showing CO2permeability of 4.59Barrerand CO2/O2selectivity of 5.68. The structure of the interpenetrating polymer network was responsible for the excellent properties of the membrane doped with PEGDA due to the formation of more mid- and micro-sized pores that increase the diffusion pathways of CO2.
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RESEARCH ON CHEMICAL INTERMEDIATES
·
2026
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IF 3.3
Wang Jiajun,Miao Yuanyuan,Wang Peng,Tao Xiaoxia,Bo Fan,Xu Yunzhao,Zhao Lingling,Zhang Caihang,Chen Yang,Tan Li,Tsubaki Noritatsu
For the industrially promising reaction of CO 2 hydrogenation toward methanol, Cu/Zn/Al-based catalysts present a potential candidate, where the surface active structure dictates the catalytic performance, guiding ongoing research into structure–activity relationships. Herein, a series of CuZn x Al y (where the mol ratio of Zn/Cu = x , mol ratio of Al/Cu = y ) catalysts with varying compositions was synthesized via a coprecipitation method. Physicochemical characterization revealed that a small amount of Al (CuZn 0.56 Al 0.04 ) enhanced the specific surface area, improved the dispersion of Cu and Zn species, and optimized the Cu + /Cu 0 ratio, as evidenced by N 2 physisorption, XRD, and XPS analyses. In contrast, excessive Al content (CuZn 0.23 Al 0.83 ) led to a decline in surface area, pore volume, and surface exposure of active Cu and Zn species. Catalytic performance tests showed that CuZn 0.56 Al 0.04 achieved the highest CO 2 conversion (16.2%), methanol selectivity (56.3%), and methanol space–time yield (STY) (438 g MeOH kg cat −1 h −1 ), outperforming that of the commercial CuZnAl catalyst. In situ DRIFTS studies confirmed that methanol synthesis proceeded via a formate (HCOO) mediated pathway, with the optimal catalyst demonstrating superior efficiency in converting key intermediates (HCO 3 *, CO 3 *, HCOO*) to the final product. The study establishes that tailored Al content is crucial for modulating catalyst surface properties and ultimately promoting catalytic performance for methanol synthesis from CO 2 . Graphical abstract An optimal Al content in co-precipitated CuZn x Al y catalysts optimizes the surface active structure, enabling efficient CO 2 -to-methanol hydrogenation via the formate pathway.
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JOURNAL OF CATALYSIS
·
2026
·
IF 6
Xinyi Yang,Yong Zhang,Yuxuan Wang,Yanyun Kang,Yiran Guo,Jianing Xu,Nianwen Song,Xinghua Zhang,Zunming Lu,Hong Dong,Feng Lu,Weihua Wang,Hui Liu,Hui Liu,Yahui Cheng
Achieving highly selective CO synthesis at near-ampere current densities (>500 mA cm −2 ) is pivotal for the industrialization of the electrochemical CO 2 reduction reaction (ECO 2 RR). However, the intrinsic low solubility of CO 2 and sluggish mass transfer kinetics fail to sustain rapid CO generation, which hinders the attainment of high current densities and renders traditional active-site regulation strategies ineffective. Thus, enhancing local CO 2 concentration and optimizing mass transfer has emerged as an urgent prerequisite for developing high-performance ECO 2 RR catalysts. To address this unmet need, we rationally designed a novel catalyst by immobilizing molecularly dispersed cobalt phthalocyanine (CoPc) onto hollow carbon spheres with tailored porous architectures. The confinement effect of the hollow porous structure boosts local concentrations of CO 2 and reaction intermediates, while structural engineering of pore parameters optimizes mass transfer efficiency and balances the density of active sites. Molecular dynamics simulations reveal that enlarging pore diameter and shortening pore length modulate the flow rate and distribution of CO 2 and electrolyte, accelerating reactant transport to active sites and promoting rapid product desorption, thereby facilitating mass transfer. Ultimately, these structural optimizations enable a CO Faradaic efficiency exceeding 92% at a near-ampere-level current densities of 800 mA cm −2 , and a turnover frequency as high as 86 s −1 , along with robust performance over a wide current density range of 100–800 mA cm −2 , outperforming state-of-the-art ECO 2 RR catalysts. This work provides a feasible mass transfer regulation strategy, offering new insights for improving ECO 2 RR current density and product selectivity, and laying a foundation for the industrial application of ECO 2 RR.
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PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2026
·
IF 7.9
Zhenzhen Wang,Liujun Wang,Chen Yuan,Bengao Yuan,Zhe Wang,Zhonghua Sun,Zhihui Zhang,Bing Lu,Ping Liu,Mingyang He,Junfeng Qian
The catalytic conversion of CO 2 to formic acid (FA) represents a promising route for carbon utilization and sustainable chemical production. However, this process faces thermodynamic limitations and requires highly efficient catalysts. Conventional synthesis methods often lead to structural inhomogeneity and involve complex procedures, constraining their efficiency and scalability. To overcome these limitations, we developed a one-pot solvothermal approach combined with calcination to fabricate Ru/CeO 2 catalysts. The as-synthesized catalysts feature atomically dispersed Ru species, a significantly increased concentration of oxygen vacancies on CeO 2 , and enhanced metal-support interactions, which work synergistically to promote reactant activation and catalytic performance. Under mild reaction conditions, the optimized Ru/CeO 2 catalyst delivered high performance, achieving a turnover number (TON) of 1112 and a turnover frequency (TOF) of 139 h −1 . Moreover, the catalyst maintained high stability and recyclability over multiple reaction cycles, underscoring its potential for industrial implementation. This study offers an efficient and scalable synthesis strategy for designing high-performance heterogeneous catalysts, thereby advancing carbon emission mitigation and sustainable chemical synthesis.
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Sustainable Materials and Technologies
·
2026
·
IF 9.7
Qian Zhang,Yi Chen,Miaomiao Xiao,Xin Zhang,Langlang Wang,Xiang Li,Xin Sun,Kai Li,Ping Ning,Yixing Ma,Xueqian Wang
The integration of non-thermal plasma (NTP) with supported metal catalysts presents a promising strategy for the conversion of carbon dioxide under mild conditions. This study prepared catalysts at relatively low temperatures and employed dielectric barrier discharge (DBD) plasma to drive CO 2 hydrogenation under low-temperature reaction conditions. The optimization effect of CeO 2 loading on the performance of Ni/ZSM-5 catalysts was systematically investigated. The results indicate that the 15Ni-15Ce/ZSM-5 catalyst exhibits the most optimal performance. At a specific energy input (SEI) of 21.65 kJ/L, the CO 2 conversion rate reaches 88.6%, representing a more than fourfold improvement over the 15Ni/ZSM-5 catalyst. The selectivities for CH 4 , C 2 H 6 , and C 3 H 8 are 90.4%, 6.8%, and 2.0%, respectively. Characterization revealed that optimized low-temperature preparation conditions successfully generated highly dispersed metallic Ni 0 active sites. The introduction of CeO 2 further reduced Ni 0 particle size and created abundant oxygen vacancies. The 15Ni-15Ce/ZSM-5 catalyst enhances CO 2 adsorption and activation through oxygen vacancy-enhanced mechanisms, while NTP generates active H atoms from H 2 . Both processes synergistically drive efficient reaction progress. In situ DRIFTS analysis of surface species on 15Ni/ZSM-5 and 15Ni-15Ce/ZSM-5 catalysts under NTP conditions revealed the mechanism of NTP-catalyzed CO 2 methanation. Results indicate that hydrogenation on 15Ni/ZSM-5 primarily follows the CO pathway. After the introduction of CeO 2 , the reaction pathway changes, with the 15Ni-15Ce/ZSM-5 catalyst achieving highly selective hydrogenation mainly through the b-HCOO pathway.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Yang Yang,Jiaxin Li,Xiaoyao Guo,Fangye Wu,Jiayu Zhang,Peng Lu
The reliance of conventional carbon dioxide (CO₂) sensors on external power limits their application scope. Self-powered triboelectric nanogenerators offer a promising alternative, yet the development of high-performance triboelectric sensing materials remains a key challenge. This study presents an ingenious design using microgels from polyethyleneimine (PEI)-crosslinked nanocellulose as dual-functional building blocks to fabricate a mechanically robust and CO 2 -sensitive triboelectric foam. The microgels (optimized with 25,000 Da PEI) formed an optimal pore-forming template, facilitating the efficient and uniform distribution of PEI. The resulting cellulose foam achieves an excellent combination of high porosity (85.6%), low density and compressive toughness (1.37 MJ m −3 ), while functioning dually as the triboelectric layer and the CO 2 sensing material. The optimized TENG-based sensor enables sensitive CO₂ responsiveness, exhibiting a good linear relationship (R 2 = 0.99) within 750–2500 ppm, and maintaining robust signal output. This study provides a novel strategy for developing CO 2 -sensitive materials and significantly advances the application of triboelectric CO₂ sensors in air quality monitoring.
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CHINESE JOURNAL OF CATALYSIS
·
2026
·
IF 17.2
Hua Gao,Yong Zhu,Zhibing Wen,Ran Zhao,Zhi Chen,Siyao Wang,Shuanglin He,Kuang Peng,Yiwen Tang,Licheng Sun,Fei Li
Solar-driven photocatalytic CO 2 conversion offers a sustainable solution for greenhouse gas mitigation and renewable energy storage. While metal phthalocyanines (MPc) exhibit excellent CO 2 reduction capabilities, their practical application in dispersed photocatalytic systems faces limitations of the stacking of MPc molecules that reduces active site accessibility, and inefficient electron transfer limited by diffusive mass transport. To address these challenges, we developed a bioinspired dye-sensitized RuP-TiO 2 -FePc nanosheets (NSs) hybrid system, where ultrathin FePc NSs obtained by liquid-phase ultrasonic exfoliation enhance active site exposure and mass transfer, while TiO 2 serves as a mediator to facilitate electron transfer between the photosensitizer and FePc NSs. Time-resolved spectroscopic studies demonstrate that TiO 2 plays a dual role: it spatially organizes functional components to enable surface electron transfer by shortening intermolecular distances, while also functioning as a semiconductor bridge to facilitate charge transport. This synergistic design achieves a remarkable CO production rate of 27.3 mmol g –1 h –1 (> 98% selectivity) and exceptional stability (TON CO = 1363 over 100 h), outperforming many noble-metal-based systems. Our work demonstrates a robust strategy for optimizing bulk catalysts through 2D exfoliation and controlled heterogenization, offering a versatile platform for efficient and durable artificial photosynthesis.
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Matter
·
2026
·
IF 15.7
Shuai Li,Feng Liu,Qiangqiang Qiao,Binghui Yu,Zhihuang Li,Fan Gu,Shibao Liu,Zixuan Li,Juxin Yue,Yujing Liu,Huadong Yuan,Jianming Luo,Yao Wang,Shihui Zou,Peng Shi,Sibo Wang,Xinyong Tao,Jianwei Nai
Multinuclear metal catalysts (MMCs) have attracted considerable interest for photocatalytic CO 2 reduction due to their unique structures and enhanced catalytic performance. Nevertheless, the poorly precise structures, limited metal tunability, and low metal content hinder further advancement of MMCs. Herein, we report a facile synthesis of structurally precise and tailorable pentanuclear metal catalysts (PMCs), in which the cyano groups link the metal nuclei. Among the PMCs, the periodically arranged PtNi 4 PMC exhibits the highest photocatalytic CO production activity of 35.82 mmol h −1 g −1 and a high selectivity of 98.66%. Experimental and theoretical results reveal that the enhanced catalytic activity mainly originates from enhanced charge separation and transfer efficiency, abundant active sites, and optimal synergistic effect between the active Pt nucleus and the four adjacent auxiliary Ni nuclei. This work provides an ideal material platform to explore precise structure-performance relationships for the MMCs and thus obtain excellent catalytic performance.
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高影响因子
MOLECULES
·
2026
·Vol. 31
·期 13
·2304
·
IF 5.1
Haopeng Cui,Zhiying Li,Siyu Huang,Tianyi Zhang,Xiaodong Zhang,Zhongxiao Zhang,Jianqiu Lei,Ning Liu
Photocatalytic CO2reduction into CH4is a promising route for solar fuel production, but its efficiency is still limited by poor charge separation, insufficient CO2activation, and sluggish multi-electron transfer kinetics. Herein, Cu-modified TiO2(Cu/TiO2) was prepared by calcining a Cu-modified defective MIL-125(Ti) precursor, denoted as Cu-MIL-125, through a temperature-controlled calcination strategy. The effects of calcination temperature on the structural evolution, surface chemical states, interfacial charge transport, and CO2photoreduction performance were examined. These results indicated that the Cu/TiO2was successfully prepared, while the crystallinity, porous structure, and interfacial electronic properties of Cu/TiO2were strongly dependent on the calcination temperature. Among the obtained samples, the Cu/TiO2sample obtained by calcining Cu-MIL-125 at 450 °C (450 Cu/TiO2) exhibited the highest CH4formation rate, reaching 15.90 μmol g−1h−1, corresponding to an approximately 9.8-fold enhancement over TiO2calcined from defective MIL-125(Ti) at 450 °C, together with a high CH4selectivity of 93.05%. Control experiments and13CO2isotope-labeling tests confirmed that the detected carbon-containing products were generated from CO2under photocatalytic conditions. In situ diffuse reflectance infrared Fourier transform spectroscopy measurements further revealed the formation of carbonate, bicarbonate and hydrogenated carbon-containing intermediates during the reaction. This work offers a practical route for constructing metal–organic framework-derived Cu/TiO2photocatalysts for selective CH4production from CO2.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Feng Yang,Mengling Jiang,Linfeng Fan,Hao Pan,Pei Feng
Co-loaded CNT with high Co 2+ content of 61.07% exhibited enhanced nanozyme activity. • P2 possessed a safe Co-ion release content far below the threshold of 20 ppm. • P2 exhibited good well-rounded properties and excellent anti-inflammatory activity. Excessive reactive oxygen specie (ROS) is not conducive to bone repair, which is prone to generate during the initial hematoma inflammatory phase following poly( L -lactic acid) (PLLA) bone scaffold implantation and the potential inflammation caused by its acidic degradation products. This study proposed introducing cobalt (Co)-based nanozyme into the PLLA scaffold, and focused on improving the dispersion between nanozyme and the PLLA matrix as well as enhancing the activity of nanozyme itself for efficiently scavenging ROS. The Co was loaded on the surface of carbon nanotube (CNT) for achieving uniform dispersion, and then calcined under different atmospheres for enhancing nanozyme activity via regulating the Co 2+ /Co 3+ ratio and optimizing the electronic structure. It was found that the nanozyme that was calcined in an N 2 atmosphere followed by phosphorylation exhibited a superior ROS-scavenging ability, which was attributed to its high Co 2+ content of 61.07% that facilitating the redox cycling and the optimization of its electronic structure by P doping. As a result, the composite scaffold (P2) at a nanozyme loading of 2 wt% possessed superior intracellular ROS-scavenging ability and downregulation of key inflammatory cytokines compared to the pure PLLA scaffold. It also possessed good cytocompatibility for cell adhesion and proliferation, and exhibited upregulated expression of the pro-angiogenic VEGF factor. Download: Download high-res image (228KB) Download: Download full-size image Co-based nanozyme was engineered by promoting dispersion and optimizing the Co 2+ /Co 3+ ratio for highly efficient SOD and CAT, and was used to endow the PLLA bone scaffold with good ROS-scavenging and cytocompatibility.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Wendong Wang,Fangsong Guo,Longmei Shang,Kang Sun,Dandan Song,Jianchun Jiang,Guowu Zhan
Pressure-driven reconstruction forms Ni-O-K single-atom interfaces. • Near-equilibrium CO 2 conversion (∼58%) with ∼100% CO selectivity. • Exceptional stability over 200 h without sintering or deactivation. • Ni-O-K sites lower E a and suppress methanation. • Carboxyl pathway dominates over formate route. Achieving simultaneous high activity, selectivity, and stability in single-atom catalysts (SACs) under high-temperature conditions remains a significant challenge, primarily due to the difficulty in precisely controlling the coordination environment of metal centers. Here, we demonstrate that alkali ion (e.g., K + ) modification of both Ni single atoms and their carbon nitride (CN) support enables exceptional performance in the reverse water-gas shift (RWGS) reaction. The resulting Ni@K-CN catalyst achieves near-equilibrium CO 2 conversion with nearly 100% CO selectivity across a broad temperature range (400–600 ℃), alongside remarkable long-term stability. This performance substantially surpasses that of the K-free analogue and ranks among the best-reported non-noble metal RWGS catalysts. Operando studies reveal that the catalyst undergoes a thermodynamically driven in-situ reconstruction under high pressure reaction conditions, forming atomically dispersed Ni-O-K interfacial sites within a restructured carbon nitride matrix. Density functional theory calculations reveal that these sites markedly lower the apparent activation energy ( E a = 41.5 vs. 131.4 kJ·mol −1 ), modulate the electronic structure of Ni and surface-adsorbate interactions, and thereby promote a low-energy-barrier carboxyl pathway while kinetically suppressing methanation. This work establishes a design strategy based on alkali-mediated dynamic reconstruction to create highly stable and selective SACs for demanding high-temperature catalytic processes. Download: Download high-res image (174KB) Download: Download full-size image
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危险品化学品经营许可证（带存储）