Chem Catalysis最新文献_第2页

Deciphering short- and long-range structural instability of ZIF-8 catalysts during electrochemical CO2 reduction 解析ZIF-8催化剂在电化学CO2还原过程中的短期和长期结构不稳定性

IF 9.4

Chem Catalysis Pub Date : 2026-09-18 DOI: 10.1016/j.checat.2026.101870

Binhong Wu,Xue Han,Guangsheng Liu,Guorui Cai,Liyue Zhang,Hien N. Pham,Yongjun Kwon,Abhaya K. Datye,Qiang Zhang,Lu Ma,Wan-Lu Li,Qiaowan Chang

{"title":"Deciphering short- and long-range structural instability of ZIF-8 catalysts during electrochemical CO2 reduction","authors":"Binhong Wu,Xue Han,Guangsheng Liu,Guorui Cai,Liyue Zhang,Hien N. Pham,Yongjun Kwon,Abhaya K. Datye,Qiang Zhang,Lu Ma,Wan-Lu Li,Qiaowan Chang","doi":"10.1016/j.checat.2026.101870","DOIUrl":"https://doi.org/10.1016/j.checat.2026.101870","url":null,"abstract":"Metal-organic frameworks (MOFs) are promising for integrated CO2 capture and electrochemical conversion, yet their structural stability under operating conditions remains unclear. Here, we reveal the short- and long-range structural evolution of ZIF-8 catalysts during electrochemical CO2 reduction using time-resolved in situ X-ray absorption spectroscopy and X-ray diffraction. Under highly reducing potentials, ZIF-8 undergoes a three-stage transformation: initial distortion of Zn–N4 coordination with Zn2+ dissolution and Zn–Zn bond formation, rapid framework collapse with metallic Zn nanoparticle formation, and subsequent stabilization of these processes. These dynamic structural changes correlate directly with the evolution of CO2 reduction activity and selectivity. Theoretical calculations further show that increasing cathodic bias destabilizes the Zn–N coordination environment, driving the observed degradation. This work provides direct insights into the potential-dependent degradation pathways of MOF electrocatalysts under operating conditions.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"76 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148993808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transmembrane electron transfer for microbial CO2 conversion using periplasmic gold nanoparticles 利用质周金纳米颗粒进行微生物CO2转化的跨膜电子转移

IF 9.4

Chem Catalysis Pub Date : 2026-09-18 DOI: 10.1016/j.checat.2026.101869

Yulong Zhang,Zhonghao Chen,Yajing Zhang,Wenhui Sun,Wangyin Wang,Xupeng Cao,Xin Guo,Can Li

引用次数: 0

Ethanol shapes the interphase for lithium-mediated ammonia electrosynthesis 乙醇形成了锂介导的氨电合成的间相

IF 9.4

Chem Catalysis Pub Date : 2026-09-17 DOI: 10.1016/j.checat.2026.101864

Yeongbae Jeon,Yun Jeong Hwang

引用次数: 0

From Goodyear to molecular feedstocks via cooperative catalysis of waste tires 从固特异到分子原料，通过合作催化废轮胎

IF 9.4

Chem Catalysis Pub Date : 2026-09-17 DOI: 10.1016/j.checat.2026.101868

Meryem S. Akdemir,Janna Jeschke,Bercis Pektas,Hatice Mutlu

引用次数: 0

Decoupling electron transfer and C–H activation for industrial-rate propane-to-isopropanol conversion 工业速率丙烷-异丙醇转化的解耦电子转移和碳氢活化

IF 9.4

Chem Catalysis Pub Date : 2026-09-17 DOI: 10.1016/j.checat.2026.101836

Panyong Kuang,Jiaguo Yu

引用次数: 0

Converging catalysis: Different starting points, one sustainable destination 聚合催化：不同的起点，一个可持续的终点

IF 9.4

Chem Catalysis Pub Date : 2026-09-17 DOI: 10.1016/j.checat.2026.101847

Xiaoxiao Qiao

引用次数: 0

Conjugated polymer interlayers enable ionomer-free anion-exchange membrane water electrolysis 共轭聚合物中间层实现了无离聚体阴离子交换膜的水电解

IF 9.4

Chem Catalysis Pub Date : 2026-09-14 DOI: 10.1016/j.checat.2026.101865

Mengjie Li,Xinhao Su,Feiqing Sun,Bing Shan,Yanjie Fang

引用次数: 0

Large-area photoelectrodes and devices for solar hydrogen production 太阳能制氢用大面积光电极及装置

IF 9.4

Chem Catalysis Pub Date : 2026-09-10 DOI: 10.1016/j.checat.2026.101842

Boyan Liu,Yingjuan Zhang,Liangcheng Xu,Xin Wang,Songcan Wang

引用次数: 0

Ligand isomerism modulates interfacial water and methanol selectivity on heterogenized cobalt phthalocyanine in electrochemical CO2 reduction 配体异构调节电化学CO2还原过程中异相化酞菁钴的界面水和甲醇选择性

IF 9.4

Chem Catalysis Pub Date : 2026-09-10 DOI: 10.1016/j.checat.2026.101866

Jiseon Kim,Suhwan Yoo,Jihoon Kim,Seongin Hong,Hyewon Yun,Yun Jeong Hwang

{"title":"Ligand isomerism modulates interfacial water and methanol selectivity on heterogenized cobalt phthalocyanine in electrochemical CO2 reduction","authors":"Jiseon Kim,Suhwan Yoo,Jihoon Kim,Seongin Hong,Hyewon Yun,Yun Jeong Hwang","doi":"10.1016/j.checat.2026.101866","DOIUrl":"https://doi.org/10.1016/j.checat.2026.101866","url":null,"abstract":"Heterogenized cobalt phthalocyanine on carbon nanotubes (CoPc/CNT) catalyzes selective CO2-to-methanol conversion, where strong ∗CO binding and facile proton transfer (PT) are critical. However, their interplay and the role of interfacial water structure in modulating selectivity remain unexplored. Here, we investigate how ligand isomerism in tetraamino- substituted cobalt phthalocyanine (α- and β-TACoPc/CNT) affects methanol production, with particular focus on the water structure. Notably, both isomers produce CO with comparable efficiency but diverge in methanol selectivity at high overpotentials. Despite stronger ∗CO binding in the α-isomer, the β-isomer achieves superior methanol production, indicating that ∗CO binding alone is insufficient to predict selectivity. In situ spectroscopy and theoretical calculations reveal that accessible amino groups on the β-isomer create weakly hydrogen-bonded water networks that facilitate PT, whereas intramolecular hydrogen bonding in the α-isomer induces more rigid networks that impede protonation. These findings emphasize that methanol production demands concurrent optimization of ∗CO binding and interfacial protonation environment.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"2 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148915174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pillar[5]arene-engineered covalent triazine polymers for sacrificial agent-free photocatalytic hydrogen peroxide production 柱状[5]芳烃工程共价三嗪聚合物用于无牺牲剂光催化过氧化氢生产

IF 9.4

Chem Catalysis Pub Date : 2026-09-10 DOI: 10.1016/j.checat.2026.101867

Meng-Hao Li,Zhi Wang,Dongbo Yan,Yan Wang,Ying-Wei Yang

{"title":"Pillar[5]arene-engineered covalent triazine polymers for sacrificial agent-free photocatalytic hydrogen peroxide production","authors":"Meng-Hao Li,Zhi Wang,Dongbo Yan,Yan Wang,Ying-Wei Yang","doi":"10.1016/j.checat.2026.101867","DOIUrl":"https://doi.org/10.1016/j.checat.2026.101867","url":null,"abstract":"Built-in electric fields (BIEFs) are pivotal for addressing sluggish charge separation and limited carrier transport in metal-free photocatalysis; however, modulating the local field microenvironment around active sites remains challenging. Herein, we report a pillar[5]arene engineering strategy to establish a robust BIEF by incorporating them into covalent triazine polymers (CTPs). Leveraging the “through-space conjugation” of pillar[5]arenes, we constructed a directed charge-transfer channel from electron-rich cavities to electron-deficient triazine units, polarizing the local microenvironment. The resulting CTP achieves 4.2-fold higher photocatalytic hydrogen peroxide production in sacrificial-agent-free pure water than the pillararene-free counterpart. It delivers a turnover frequency of 1.27 h−1 (16-fold over the control). Experimental and theoretical investigations reveal that the pillararene-induced electronic delocalization suppresses carrier recombination by minimizing electron-hole spatial overlap. Mechanistic studies confirm that this optimized electronic landscape facilitates a synergistic 2e– water oxidation and 2e– oxygen reduction pathway, ensuring the total utilization of photogenerated carriers.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"173 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148915176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0