JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Guangli Yu,Zhiqi Zhu,Fei Ni,Xingfei Song,Xuming Qin,Xiaoguo Wan,Kangjun Wang
Porous organic frameworks (POFs) have garnered significant attention as potential filler materials for gas separation applications. Nevertheless, most available POFs predominantly possess a single type of adsorption site, which limits their overall performance. In this study, two ferrocene-based POFs, termed FcDA POF-1 and FcAc POF-2, were synthesized using ferrocene derivatives and pyrrole as monomeric precursors. The resulting POFs exhibited dual Lewis acid-base sites and high specific surface area. Extensive characterization validated excellent interfacial compatibility when these POF fillers were incorporated into 6FDA-DAM polymer matrix. The optimized mixed-matrix membrane (MMMs) based on FcDA POF-1 achieved exceptional CO 2 permeability of 3278.1 Barrer, coupled with an ideal CO 2 /N 2 selectivity of 58.4. These metrics represent enhancements of 260% and 208%, respectively, compared to the pristine 6FDA-DAM membrane, notably exceeding the 2019 Robeson upper bound. Density functional theory (DFT) calculations supported the hypothesis that multiple weak interactions between CO 2 molecules and FcDA POF-1, occurring at the electron-rich nitrogen atoms (Lewis base sites) and electron-deficient cyclopentadienyl groups (Lewis acid sites), synergistically enhance selective CO 2 recognition. Further evaluations under mixed-gas conditions, varying pressures and temperatures, as well as long-term stability tests, substantiated the membranes’ practical applicability. This work underscores rational design principles for constructing high-performance MMMs and presents a viable avenue for efficient CO 2 separation.
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PLANT BIOTECHNOLOGY JOURNAL
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2026
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IF 12.8
Shubin Li,Tao Sun,Dailin Liu,Tong Zhang,Lei Chen,Weiwen Zhang
The single crossover occurring via homologous recombination is a common phenomenon existing among microbes like Escherichia coli , Bacillus subtilis , Vibrio natriegens , Gluconobacter oxydans and most cyanobacteria species, threatening the stability of engineered strains and challenging iterative genetic engineering. Among them, we take the fast-growing cyanobacterium Synechococcus elongatus UTEX 2973 (Syn2973) as a representative study due to its promising roles for CO 2 fixation and bioconversion. We established three marker-free platforms to achieve stable genome recombination: (i) T4CROSS, which employs two plasmids and four rounds of single crossover; (ii) TRIPLEARM, which uses a single plasmid containing three homologous arms for three rounds of single crossover; and (iii) CRISPRARM, which integrates CRISPR/Cpf1-mediated genome editing with homologous recombination. As proof of concept, we employed the CRISPRARM platform for a three-step sequential engineering of the sucrose biosynthetic pathway. The final engineered strain produced 7.12 g L −1 of sucrose within 4 days.
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Advanced Science
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2026
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IF 14.1
Jiaying Zhang,Junjie Huang,Siying Zhang,Yanjia Cui,Chao Kong,Zijian Peng,Huihui Jiang,Sirui Deng,Zhuoyao Chen,Caili Yang,Ketong He,Zhen Li,Yibing Song,Gongwei Wang,Lin Zhuang
Tandem catalysts represent a promising paradigm for synergistic electrochemical CO 2 reduction (CO 2 RR) to high-value multi-carbon (C 2 ) products, yet coordinate regulation of key intermediates to boost C 2 selectivity remains unclear. Herein, a dual-phase templating coupled with gas-phase reduction strategy is exploited to fabricate a series of CuAg@MSN tandem catalysts with tunable Cu/Ag mass ratios. A volcano-type relationship between catalyst composition and C 2 product selectivity is observed, with CuAg@MSN-3 (15 wt.% Ag, 40 wt.% Cu) delivering the maximum C 2 Faradaic efficiency (FE) of 75.4% at −1.4 V vs RHE. And a high FE of 63.5% and a large partial current density of 330 mA/cm −2 toward C 2 products on CuAg@MSN-3 at a cell voltage of 4.5 V in a membrane-electrode assembly (MEA). In situ infrared spectroscopy and density functional theory (DFT) calculations jointly corroborate that CO generated on Ag sites spontaneously spills over and becomes confined within the mesopores of the MSN framework, markedly promoting CO re-adsorption on adjacent Cu sites and elevating the * CO surface coverage. This intermediate regulation effectively enhances the reaction rate of C─C coupling and consequently boosts C 2 product selectivity. The present work exemplifies a rational, confinement-guided design of tandem catalysts for steering reaction intermediates toward desired multicarbon products.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Peiyi Cao,Lizhi Tang,Zhihong Wang,Jun Wei,Jun He,Hongyun Luo,Hongjing Chen,Wenjin Cheng,Yu Yu,Weicheng Yan,Zhongkai Xie,Weidong Shi
Dual-layer system design and photothermal catalysis without external heat supply. • Exceptional catalytic performance and selectivity. • Exploring the mechanism of thermally-assisted photocatalysis. The photocatalytic conversion of CO 2 and H 2 O into C 2 H 4 is a promising approach for carbon recycling, yet current systems are limited by inefficient solar energy utilization, which confines C 2 H 4 production to micromolar levels. To address this challenge, photo-thermal catalysis was developed. The Ti 3 C 2 T x MXenes substrate, characterized by broad-spectrum solar absorption and ultralow mid-infrared emissivity, provides efficient photothermal conversion, raising the local reaction temperature and accelerating both molecular diffusion and charge carrier migration, which integration enhances the C-C coupling efficiency, leading to a remarkable 1.35 mmol·g -1 ·h -1 of C 2 H 4 production rate and 75.1% of C 2 H 4 selectivity, which surpasses the current benchmarks for photocatalytic CO 2 -to-C 2 H 4 conversion. Moreover, when deployed in a custom-designed outdoor reactor equipped with a Fresnel lens concentrator and a continuous gas flow system, the catalyst delivered up to 11.3 mL of C 2 H 4 with a total CO 2 single-pass conversion rate of 2.6% after 8 h. These results not only establish a new benchmark for photocatalytic CO 2 -to-C 2 H 4 conversion but also provide valuable insights into the cooperative mechanisms of photochemical and photothermal processes, paving the way for advanced artificial photosynthesis technologies. Download: Download high-res image (253KB) Download: Download full-size image The findings reveal cooperative mechanisms between photothermal and photocatalytic processes, establishing a generalizable design principle for advanced catalysts aimed at improving solar-to-chemical energy conversion and enabling more efficient artificial photosynthesis.
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Progress in Natural Science-Materials International
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2026
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IF 7.4
Somavia Ameen,Amna Abrar,Siyang Wang,Qianqian Ren,Xintong Yan,Attiqa Parveen,Shi Hu
Transitioning to a net-zero society requires efficient electrochemical technologies for converting carbon dioxide (CO 2 ) into valuable products powered by renewable energy. The commercial deployment of CO 2 electrolyzers requires catalysts that combine high activity, selectivity, and scalability. This study reports a novel and facile synthesis strategy for highly loaded, uniformly dispersed silver nanoparticles (AgNPs) on conductive carbon substrates using 1-dodecanethiol as a stabilizing ligand. This approach enables simultaneous control over particle size (<7 nm) and metal loading (up to 60 wt %) on Vulcan XC (low surface area) and Ketjen Black (high surface area). Using 1-dodecanethiol effectively prevents agglomeration, yielding highly dispersed AgNPs even at ultrahigh loading. We present a systematic investigation into the influence of carbon support surface area on Ag dispersion, loading efficiency, and electrocatalytic performance. Notably, Ag/KB-60 exhibits a faradaic efficiency of 90 % for CO at −0.81 V vs. RHE and remarkable operational stability over 24 h. This work presents a low-cost, thiol-based synthesis strategy that is readily scalable for industrial manufacturing of CO 2 electrolyzers, enabling the production of high-performance Ag/C catalysts with commercial relevance.
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Small
·
2026
·Vol. 22
·期 30
·e73668
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IF 11.8
Jiaxin Bai,Xueru Zhao,Jinlong Wu,Min Zhu,Weiwei Fan,Jingtian Ni,Zhouzhou Li,Shiyuan Xu,Jing Li,Feng Li
The electrochemical reduction of carbon dioxide to multi-carbon (C 2+ ) products is impeded by the instability and inefficient utilization of key reaction intermediates. To address this challenge, we developed a strategy based on geometric control of spatially confined microenvironments, enabling the rational design of programmable Cu x O microreactors on Cu 2+ (111)/Cu + (200) substrates. Two distinct catalyst architectures—small-ordered (s-Cu x O@styrene) and large-ordered (c-Cu x O@styrene)—were systematically engineered to modulate CO intermediate behavior, thereby directing reaction selectivity toward ethylene and ethanol production. Faradaic efficiencies for C 2+ products demonstrate pronounced dependence on microstructure: increasing from negligible values in the small-ordered s-Cu x O@styrene (25.6% ethylene,12.4% ethanol, 3% propylene) to 78.8% in the large-ordered c-Cu x O@styrene (55% ethylene, 23% ethanol, 1% propylene). In situ infrared spectroscopy reveals that the highly ordered configuration enhances CO adsorption, promoting the accumulation of critical *OCCOH and *OC 2 H 5 intermediates. Moreover, synergistic interactions between Cu + and Cu 0 active sites accelerate C–C coupling kinetics, favoring selective formation of C 2+ species. This work establishes a geometry-driven paradigm for controlling catalytic selectivity independent of compositional tuning, offering a promising avenue for the development of adaptive catalytic systems in renewable energy conversion.
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Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 4
·123279
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IF 7.5
Bolin Chen,Chunhong Nie,Nan Yang,Wen Xin,Zhichao Gong,Luhua Hou,Haonan Zhang
Solar-driven carbon dioxide reduction (CO 2 RR) is a highly promising strategy for closing the carbon cycle and enabling the sustainable production of clean chemicals. However, its practical efficiency remains severely limited by sluggish reaction kinetics and competing reaction pathways. In this study, through rational interfacial engineering to induce a stable built-in electric field, we constructed an S-scheme heterojunction based on CeO 2 (110)/g-C 3 N 4 to achieve coordinated modulation of photocatalytic CO 2 reduction. Under gas-solid-phase reaction conditions without a sacrificial agent, the catalyst delivered a yield of 2.51 μmol·g −1 ·h −1 , representing an 8.05-fold enhancement compared with pristine g-C 3 N 4 . A series of experimental investigations indicate that the internal electric field not only promotes the efficient separation and migration of photogenerated carriers but also strengthens CO 2 adsorption and activation, thereby steering the original CO-forming pathway toward an eight-electron-dominated CH 4 pathway. This work may offer a viable heterojunction design strategy for achieving selective CO 2 RR.
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CHEMICAL ENGINEERING SCIENCE
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2026
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IF 5.1
Yanmei Li,Chunjie Chen,Yali Zhao,Wufeng Wu,Yanying Wei,Haihui Wang
Two-dimensional metal–organic framework (MOF) membranes have emerged as competitive candidates for efficient gas separation owing to their ultrashort diffusion pathways and highly tunable nanochannels. However, unavoidable linker rotation within 2D frameworks constrain accurate molecular sieving. Herein, heteroleptic Zn(bim)(OAc) nanosheets are employed for constructing high-performance membranes, where cooperative 2D-3D linkers coupling regulates framework motions. The 3D acetate (OAc − ) linkers limit the amplitude of motion, whereas planar 2D benzimidazolate (bim) linkers introduce locally rotational freedom through weaker M−N coordination bond, generating precise angstrom-level, dynamically tunable pore window. The heteroleptic membrane achieves considerable H 2 /CO 2 selectivity of ∼ 134, surpassing the upper bounds of traditional polymer membranes. This work demonstrates that cooperative 2D-3D linkers coupling provides a feasible pathway to engineer precise, dynamically tunable apertures in 2D MOF nanosheet membranes, offering a promising avenue for designing high-performance membranes.
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Green Energy & Environment
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2026
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IF 16.7
Guohua Li,Xiaodi L,Wei Zhang,Di Cai,Hui Cao,Zehan Yao,Tõnu Pullerits,Kaibo Zheng,Tianwei Tan
Photochemical regeneration of NADH is essential for bioinspired redox catalysis but remains limited by inefficient electron-proton coordination. We report a donor-acceptor conjugated polymer system with rhodium centers, where electron-donating substituents (-OH, -OMe, -Me) can modulate both photo-induced charge behavior and surface reaction properties. The optimal -OH subsitutents can, on one hand, enhances dielectric screening and planarity of the polymers to, reduce the exciton binding energy and facilitate charge injection to the rhodium active centers. On the other hand, its hydrophilicity further promotes proton migration, enabling synchronized and co-localized two-electron/one-proton donation to NAD + at the rhodium centers. Therefore, the optimized -OH-containing polymer achieved selective photoreduction of NAD + to 1,4-NADH at a rate of 12.81 mmol g -1 h -1 , which is one of the highest levels reported to date to our knowledge. Integrated into a photo-electro-enzyme cascade, the system synergistically couples NADH regeneration with enzymatic catalysis to achieve the first conversion of CO 2 -derived aldehydes into glycerol, highlighting its potential for sustainable carbon valorization. This work establishes a facile strategy to regulate both electron and proton donation in organic photocatalysts and expands their application in solar-driven biotransformations.
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NEW JOURNAL OF CHEMISTRY
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2026
·
IF 2.6
Wensheng Wei,Chunyang Zeng,Shengli Wang,Yuxin Wang,Tiejun Yu,Xin Ma,Guangwen Xu,Jinggang Zhao,Lei Shi
An imidazole-ligated Sn catalyst ([EIMBr-COO]2Sn) with five active centers (i.e., Lewis acidic Sn center, hydrogen atoms of the methylene and methyl groups, the imidazolium cation, and a nucleophilic site Br−) for efficient cycloaddition of epoxides was designed and constructed by combining simulation and cognition. Under mild conditions for only 30 min, the propylene carbonate (PC) yield reached 99.73% with a significant TOF value of 582.37 h−1. [EIMBr-COO]2Sn also demonstrated a wide range of catalytic universality and satisfactory stability. The calculated activation energy (Ea) was much lower at 26.23 kJ mol−1 (6.27 kcal mol−1) compared to those of other reported catalysts. The DFT calculations evidently revealed the efficient catalytic reaction pathway and clearly indicated the promotion mechanism of three electrophilic sites in CO2 cycloaddition. It is elucidated that different electrophilic active sites (i.e., Lewis acid Sn, methylene protons, and methyl protons) interacted with the oxygen atom of epoxides during different reaction states and thus weakened the C–O bond, stabilized the reaction intermediate, and significantly reduced the energy barrier for the CO2 cycloaddition reaction. Informed by the dynamic demands for CO2 cycloaddition, this study employed a sequential strategy of theoretical model construction followed by experimental validation to develop an integrated, high-efficiency catalyst with combined active sites, which established a new paradigm for designing functional catalysts.
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CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Chaoran He,Shanshan Zhao,Jiafei Lyu,Bofeng Zhang,Rongrong Zhang,Guozhu Liu
The severe carbon deposition that plagues conventional Ni catalysts in dry reforming of methane (DRM) originates from the kinetic mismatch between CH 4 cracking and CO 2 dissociation. Here, we design an atomically thin Sm-doped MgAlO x overlayer to encapsulate Ni nanoparticles, creating a confined reaction environment that intrinsically couples these two critical steps. The Sm-induced electron donation to Ni accelerates CH 4 dissociation by weakening the C-H bonds, while the Sm-doped thin overlayer with rich oxygen vacancies facilitates the rapid decomposition of CO 2 -derived carbonate intermediates (m-CO 3 2− ) and shortens the diffusion path for the resultant active oxygen species to gasify surface cavrbon precursors. The optimized catalyst achieves high conversions of CH 4 (91.0%) and CO 2 (94.0%) at 800 °C, reducing carbon deposition from 39.47% to 9.50%, and maintains stable performance over 100 h. This work demonstrates that precise reducible-oxide overlayers engineering can intrinsically align reaction kinetics to break the classical deactivation cycle of Ni-based catalysts in DRM.
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Journal of Materials Chemistry A
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2026
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IF 9.2
Yueling Chen,Shibin Zheng,Xingci Huang,Zhangtong Zhang,Guocheng Huang,Qiaoshan Chen,Ling Wu,Jinhong Bi
Covalent organic frameworks (COFs) have emerged as promising candidates for photocatalytic CO2 reduction. While the introduction of single metal atoms can enhance activity, most reported COF-single atoms catalysts adopt near-planar coordination environments that confine carrier migration largely within individual layers, imposing high interlayer transfer barriers and sluggish kinetics and consequently hindered overall performance. This work constructed a single-atom Ag-modified covalent organic framework (Ag-COF) by confining isolated Ag atoms within a spherical TD-COF scaffold, thereby wiring adjacent layers into efficient interlayer charge-transfer channels for gas-solid CO2 photoreduction. Under visible light and without sacrificial agents, Ag0.15-COF delivered a CO formation rate of 184.05 μmol·L-1 with near-unity CO selectivity, representing a tenfold improvement over pristine TD-COF. Structural and photoelectronic analyses identified the N-Ag-N bridging motifs that lowered the interlayer electron-transfer barrier, accelerated carrier separation/migration, and tuned the local electronic structure of active sites. In situ spectroscopy combined with thermodynamic calculations further revealed that the strengthened interlayer charge flow enhanced CO2 adsorption/activation and markedly reduced the barrier for forming the key *COOH intermediate. This study elucidates, at the atomic scale, how interlayer charge transfer governs the activity and selectivity, and provides a design blueprint for highly efficient single-atom-modified COF photocatalysts.
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