Molecular Catalysis
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2018
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IF 0
Haibo Chang,Qingshuo Li,Xuemin Cui,Hongxia Wang,Congzhen Qiao,Zhanwei Bu,Tong Lin
In this study, we have for the first time demonstrated that polyvinyl alcohol (PVA) and potassium iodide (KI) can form an efficient catalytic system for synthesis of cyclic carbonates from epoxide and CO 2 . The catalytic reaction happens in solvent-free conditions. A synergetic effect occur between PVA and KI which considerably increases the reaction yield. This binary catalytic system is mainly suitable for mono-substituted terminal epoxides. In the optimized reaction condition, over 90% reaction yield can be achieved. The binary catalyst is reusable and can be recycled at least five times without significant loss of the catalytic activity. The PVA hydrolysis degree affect the catalytic activity as well. A possible mechanism of synergetic effect of the binary system was proposed. PVA and KI may form a non-toxic, low cost, recyclable, highly-efficiency catalyst for fixing CO 2 through cycloaddition with epoxides.
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DOI
APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Guojun Li,Zhen Chen,Yunlong Wang,Haiwei Su,Yida Xie,Shule Zhang,Qin Zhong,Junhua Li
A reversible Bi 0 /Bi 2 O 2 CO 3 functional layer was constructed on CuBi 2 O 4 via in situ solvothermal reconstruction. • The Bi/BOC layer suppresses metal dissolution and irreversible catalyst reconstruction during CO 2 electroreduction. • The Bi/BOC heterointerface optimizes Bi electronic states and lowers the energy barrier for *OCHO formation. • Bi/BOC@CBO achieves high stability and Faradaic efficiency for formate production. Achieving high activity and exceptional operational stability remains challenging for electrocatalytic CO 2 reduction, primarily due to metal dissolution and structural reconstruction of catalysts under CO 2 RR conditions. Herein, we developed an in situ solvothermal strategy to preconstruct a structurally reversible Bi 0 /Bi 2 O 2 CO 3 (Bi/BOC) functional layer on CuBi 2 O 4 , transforming otherwise uncontrolled reconstruction into a regulated interfacial structural response. The resulting Bi/BOC functional layer enhances catalyst stability by combining physical surface protection against metal dissolution with reversible Bi 0 ↔ Bi 2 O 2 CO 3 structural evolution, thereby markedly suppressing uncontrolled dissolution and reconstruction during prolonged CO 2 electroreduction. Meanwhile, the Bi/BOC heterointerface modulates the electronic structure of Bi sites and interfacial proton transfer, lowering the energy barrier for *OCHO formation and enhancing CO 2 -to-formate conversion. Consequently, the Bi/BOC@CBO catalyst achieves a formate Faradaic efficiency of 96.9% with a production rate of 3.64 mmol·h −1 ·cm −2 at 200 mA·cm −2 , while maintaining 94.6% FE over 90 h. This work establishes structurally reversible functional-layer engineering as an effective approach to regulate catalyst reconstruction and balance catalytic performance with structural stability in multimetallic electrocatalysts for CO 2 reduction. Download: Download high-res image (220KB) Download: Download full-size image
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高影响因子
JOURNAL OF CATALYSIS
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2018
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IF 6.759
Somboon Chaemchuen,Xuan Xiao,Marzieh Ghadamyari,Bibimaryam Mousavi,Nikom Klomkliang,Ye Yuan,Francis Verpoort
A robust catalyst generated from the pyrolysis of bimetallic Zn/Co-ZIF comprising magnetic properties demonstrated to be an effective heterogeneous catalyst system for CO 2 conversion reaction without the need of co-catalyst and solvent. Controllable pyrolysis under various conditions resulted in a unique active structure composed of metallic particles stabilized in a nitrogen-doped carbon matrix. The metallic particles acting as acid sites are dispersed in a nitrogen-doped porous carbon-wall which provides the basic sites. These sites are created during the pyrolysis process of Zn/Co-ZIF used as a special template under a controlled atmosphere. The resulting material possessing both, acid and basic sites, showed an excellent catalytic performance for the cycloaddition of CO 2 into epoxides as these sites correspond to the active sites in the catalytic cycle. Additional, the pyrolysis conditions indicated to play an important role in the properties of the resulting materials and in parallel with the catalytic performance. The catalytic material proved to be very robust and maintained high activities for at least eleven cycles using the optimized reaction condition. Moreover, the magnetic property of the resulting catalyst is advantageous especially for the separation from the reaction mixture.
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高影响因子
FUEL
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2025
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IF 7.5
Haripal Singh Malhi,Bantayehu Uba Uge,Lenka Matějová
The selective hydrogenation of CO 2 to produce aromatics presents an intriguing approach for carbon utilization and the formation of high-value chemicals. This study presents a novel core–shell FeK@HZSM-5 catalyst, developed by cladding HZSM-5 zeolite onto a K-promoted Fe oxide core, to enable the direct conversion of CO 2 into aromatics. Under optimum reaction conditions (320 °C, 2.0 MPa, H 2 /CO 2 = 3), the FeK@HZSM-5 catalyst accomplishes 43.2 % selectivity for aromatics at 31.1 % conversion of CO 2 , outperforming the physically mixed FeK-HZSM-5 catalyst (aromatics selectivity: 31.8 %) while keeping CH 4 selectivity below 12 %. Mechanistic investigations reveal that the reaction follows a tandem RWGS-FTS pathway, with olefins serving as crucial intermediates. Robust interactions between Fe and zeolite enhance the stability of active Fe 5 C 2 phases and graphitic carbon, promoting olefin chain growth while inhibiting methanation. The appropriate density of Brønsted acid sites facilitates efficient aromatization, whereas an excess of acidity and increased shell thickness result in over-hydrocracking. The FeK@HZSM-5 catalyst exhibits a notable improvement in CO 2 adsorption capacity, attributed to the occurrence of increased oxygen vacancies and higher surface basicity, which facilitates effective CO 2 activation. The confinement effect of the zeolite shell further modulates intermediate diffusion and water retention. A FeK-to-HZSM-5 wt ratio of 1:2 provides the optimal structural and chemical balance. The catalyst exhibits remarkable stability after 100 h of operation with minimal coke deposition, emphasizing its promise for industrial CO 2 -to-aromatics conversion.
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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
Zhongmin Feng,Zheng Wang,Li-hua Qi,Sijie Yun,Chuang Zu,Ling Huang,Shengping Wang,Huanting Wang
Gas separation using metal organic framework (MOF) membranes has attracted considerable attention in recent years. Despite the progress made, establishing thin, defect-free MOF layers within the porous polymer remains a significant challenge. In this study, a novel approach is reported for the preparation of ZIF-8/Polyethersulfone (ZIF-8/PES) composite membranes via non-solvent-induced phase separation (NIPS)-triggered in-situ crystallization strategy. In this method, PES serves as a solid solvent for Zn(NO 3 ) 2 . During the NIPS process, an asymmetric PES membrane with a skin layer, finger-like pores, and interconnected foam structures is formed. Concurrently, Zn(NO 3 ) 2 diffuses to the skin layer and reacts with 2-methylimidazole (2-MIM), yielding a dense ZIF-8 layer on the PES surface. The simultaneous nucleation and growth of ZIF-8 within the polymer create strong interfacial interactions at the organic-inorganic interface. These interactions improve the compatibility between ZIF-8 and the polymer matrix, reduce interfacial defects. As a result, the composite membrane exhibits enhanced mechanical stability. When the crystallization time is extended to 48 h, the thickness of the ZIF-8 layer reaches approximately 540 nm, and the membrane exhibits an H 2 /CO 2 selectivity of 72.3 ± 3.35 at 298 K. This study provides a facile and effective route for constructing thin MOF membranes on polymeric matrix for high-performance gas separation.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2026
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IF 3.1
Zhao Li,Hongjing Liu,Xingyu Chen,Yuqing Zhou,Pengzhi Bei,Ying Zhang
The development of high-performance mixed-matrix membranes (MMMs) for CO 2 separation requires fillers that simultaneously offer molecular-sieving pathways and favorable interfacial compatibility. Here, ZIF-67 was grafted with a long-chain polyetheramine (M600) to yield ZIF-67-M600, which was then incorporated into a Pebax matrix to fabricate novel MMMs. Comprehensive characterization including FT-IR, XRD, SEM, DSC and TGA confirmed the successful grafting of M600 and the homogeneous dispersion of the filler within the polymer. The microporous framework of ZIF-67 provides size-selective transport channels, while the abundant ether groups in M600 enhance CO 2 affinity and facilitate its preferential diffusion. Gas permeation tests demonstrate that the 4 wt% ZIF-67-M600/Pebax membrane achieves a CO 2 permeability of 110.12 Barrer and a CO 2 /N 2 selectivity of 85.96°C at 30°C and 0.2 MPa, corresponding to increases of 65% and 61%, respectively, compared to the pristine Pebax membrane. This performance surpasses the 2008 Robeson upper bound, highlighting that surface grafting of MOFs with CO 2 -philic polymers is an effective strategy to concurrently boost permeability, selectivity, and interfacial adhesion in MMMs for advanced gas separation.
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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
Kai Liu,Ziling Liu,Tuanhui Li,Wasim Afzal Muhammad,Xue Liu,Dongbin Dang,Yan Bai
Developing highly efficient single-atom catalysts (SACs) with optimal active-site utilization remains challenging. In this study, a hollow macroporous-mesoporous catalyst composed of iron single atoms supported on nitrogen-doped carbon (Fe/NC) was synthesized using silica microspheres as a sacrificial template and dopamine hydrochloride as a bifunctional C/N source and iron-anchoring ligand, and applied to the CO 2 cycloaddition reaction. According to the experimental results, the Fe/NC catalyst demonstrates exceptional performance in the cycloaddition reaction of styrene oxide with CO 2 , achieving a high yield of 97.45 ± 0.33% (turnover frequency (TOF) = 38.19 h −1 ), despite having an extremely low iron loading of only 1.36 ± 0.01 wt%. This is attributed not only to the superior intrinsic catalytic activity of the Fe N 4 active sites but also to the hollow mesoporous structure with a high specific surface area, which provides stable metal anchoring sites to effectively suppress iron atom aggregation, promotes continuous release of substrates and CO 2 , enhances product diffusion, and thereby improves catalytic efficiency. In addition, the Fe/NC catalyst demonstrates excellent cycling stability, maintaining a high conversion efficiency of 93.26 ± 0.52% after five consecutive recycling tests while preserving its structural integrity. Moreover, the Fe/NC catalyst exhibits broad substrate compatibility. This work provides a theoretical basis for synthesizing porous C/N materials with single-atom loading to achieve efficient catalytic conversion of carbon dioxide Download: Download high-res image (139KB) Download: Download full-size image
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PubMed
高影响因子
JOURNAL OF CATALYSIS
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2026
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IF 6
Hongyang Zhang,Hongbin He,Yuqi Ren,Ruoxuan Peng,Pengyu Fei,Jiancheng Zhou,Naixu Li
The efficient synthesis of C 2 fuels via artificial photosynthesis confronts persistent challenge in dilute CO 2 environments. To address this, we engineered a photothermal catalyst incorporating spatially confined Cu/Au alloy nanoclusters on CeO 2 nanorods. The design establishes an atomically precise Ce − O − Au − Cu charge cascade, where directional photothermal energy transfer governs the C − C coupling pathway. Mechanistic studies reveal that Cu sites within the Cu/Au alloy enhance Au-driven localized surface plasmon resonance (LSPR), broadening the spectral response while accelerating hot electron transfer for CO 2 activation. Simultaneously, adjacent Cu sites stabilize co-adsorbed *CO intermediates, directing C − C coupling to form the key *OCCO intermediate, while the Ce − O − Au interface mediates hole-transfer-driven H 2 O oxidation predominantly at Au centers. Integrated theoretical calculations and in situ DRIFTS confirm the kinetic and thermodynamic superiority of the *OCCO pathway over both the *CHO pathway and CO desorption. Under concentrated solar irradiation, this catalyst achieves a C 2 H 4 yield of 110.45 µmol·g −1 ·h −1 (a 20.2-fold increase over non-concentrated conditions), with C 2 selectivity rising from 0% to 78%. Solar-to-chemical conversion (STC) efficiency increases 13.3-fold to 1.25‰. This work elucidates the atomistic mechanism of photothermal coupling-driven directional C − C coupling, providing a generalizable design strategy for efficient carbon–neutral fuel synthesis.
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高影响因子
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
SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2026
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IF 6.6
Zongze Lv,Lean Xian,Fanmu Meng,Jinqi Yang,Xiang Huang,Keyan Sun
Integrating carbon capture with solar energy storage offers a promising pathway toward carbon neutrality, yet the synergistic utilization of carbonaceous materials from capture processes remains underexplored. Herein, we fabricate a flexible phase change film (PCF) using porous carbon derived from the reciprocal carbon–carbonate co-calcination (RCCC) of bamboo biochar and limestone. During RCCC, 93.2% of CO 2 released from limestone is converted to CO. The optimized PCF composed of BC, thermoplastic polyurethane, and microencapsulated eicosane achieves a phase change enthalpy of 123.87 J g −1 , excellent leakage-proof and mechanical stability. The photothermal conversion efficiency can reach 85.5%. This work demonstrates the first integration of RCCC-based carbon capture with flexible photothermal energy storage, offering a viable route for upgrading captured carbon into functional solar-thermal materials.
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高影响因子
Journal of the Korean Ceramic Society
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2026
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IF 4.4
Song Xiao-jie,Weng Tong-juan,Li Jing-wen,Dong Wei-wei,Sun Yue,Liu Shuai-peng,Oh Won-Chun
Photocatalytic reduction of CO 2 into chemical fuels under visible light has garnered increasing attention. Herein, we designed silver nanoparticle (Ag NPs)/carbon quantum dot (CQDs)/TiO 2 nanotubes (TNTs) nanocomposites via a hydrothermal process combined with an in-situ photod-eposition method. Results of methylene blue photodegradation tests under visible light demonstrated that Ag/CQDs/TNTs exhibited higher photocatalytic efficiency than pristine TNTs. In addition, in the carbon dioxide photoreduction experiment, the optimized Ag/CQDs/TNTs has a photocatalytic yield of 38.33 µmol g -1 h -1 when carbon dioxide is converted into carbon monoxide, which is 5.3 times that of pure TNTs. Detailed experimental characterizations revealed that the enhanced photocatalytic performance of Ag/CQDs/TNTs stemmed from the surface plasmon resonance effect of Ag NPs and the excellent optoelectronic properties of CQDs. This work offers insights for fabricating ternary catalysts for photocatalytic CO 2 reduction.
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高影响因子
AICHE JOURNAL
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2026
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IF 4.4
Yajie Yu,Haiyi Chen,Kaiji Xu,Jinxin He,Bin Chen,Kok Bing Tan,Dongren Cai,Guowu Zhan
Conventional supported Cu catalysts for the reverse water-gas shift (RWGS) reaction suffer from activity-selectivity trade-offs and stability issues. Herein, we report a carrier-free Cu catalyst (bio-Cu) synthesized via a pollen-templated strategy. The template creates a hierarchical porous framework and enables in situ carbon doping (~4 wt%), ensuring homogeneous Cu dispersion and inhibiting agglomeration. In the RWGS reaction, the bio-Cu catalyst exhibits outstanding performance, achieving >99.1% CO selectivity with 25.3% CO 2 conversion at 340°C and 3 MPa, approximately 3.2 times higher than a conventional Cu benchmark. Under ambient pressure at 450°C, it maintains 30.5% conversion with 99.99% CO selectivity and shows exceptional stability over 100 h. Mechanistic studies reveal that carbon doping generates electron-deficient Cu δ+ species and promotes a synergistic carbon cycle that operates alongside the conventional redox pathway, collectively enhancing the catalytic efficiency. This work provides new insights into the rational design of high-performance, carrier-free CO 2 hydrogenation catalysts.
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高影响因子
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