Applied Catalysis B: Environmental最新文献_第4页

Promoted selectivity of photocatalytic CO2 reduction to C2H4 via hybrid CuxCoSy possessing dual unsaturated sites 通过具有双不饱和位点的混合 CuxCoSy 提高光催化二氧化碳还原为 C2H4 的选择性

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-10 DOI: 10.1016/j.apcatb.2024.123704

Yu Nie , Yanfang Li , Chao An , Xin Tan , Zhuofeng Hu , Jinhua Ye , Tao Yu

{"title":"Promoted selectivity of photocatalytic CO2 reduction to C2H4 via hybrid CuxCoSy possessing dual unsaturated sites","authors":"Yu Nie , Yanfang Li , Chao An , Xin Tan , Zhuofeng Hu , Jinhua Ye , Tao Yu","doi":"10.1016/j.apcatb.2024.123704","DOIUrl":"10.1016/j.apcatb.2024.123704","url":null,"abstract":"<div>Ethylene production by CO2 reduction is sluggish because the repulsive dipole-dipole interaction and 12 proton-coupled electron-transfer steps consecutively. Amorphous structured photocatalysts possess few grain boundaries and abundant unsaturated sites, accelerating the reaction efficiency from the angle of dynamics and thermodynamics, which still not yet be used in PCR to C2 products currently. Herein, an amorphous CuxCoSy composed of the minority crystalline CuCo2S4 is fabricated to realize an excellent C2H4 selectivity in terms of Relectron (94.9%). Unsaturated Co and S play the key roles in the improved efficiency of C2H4 generation. C-C coupling is achieved via shortening Co-S bonds distance, and *CO-*CO coupling barrier is decreased by more electrons accumulated on unsaturated S. Water is adsorbed on Co adjacent to S and provide protons for *COCO to form *CH2 = C. This work paves a new way for broadening the efficient of C2H4 photocatalytic evolution using amorphous photocatalyst.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123704"},"PeriodicalIF":22.1,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139410418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic Regulation of Charge State and Electron-donating Ability via Heterojunctions Design for Fixation of Electronegative Greenhouse F-gases 通过异质结设计协同调节电荷状态和电子供能能力以固定负电温室气体

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-09 DOI: 10.1016/j.apcatb.2024.123709

Xiang Meng, Boxu Dong, Liang Zhao, Wenhui Zhou, Xinhao Li, Jiantao Zai, Xuefeng Qian

{"title":"Synergistic Regulation of Charge State and Electron-donating Ability via Heterojunctions Design for Fixation of Electronegative Greenhouse F-gases","authors":"Xiang Meng, Boxu Dong, Liang Zhao, Wenhui Zhou, Xinhao Li, Jiantao Zai, Xuefeng Qian","doi":"10.1016/j.apcatb.2024.123709","DOIUrl":"https://doi.org/10.1016/j.apcatb.2024.123709","url":null,"abstract":"The net-zero greenhouse gas emission has now become a global strategy. In this context, electronegative fluorinated-gases such as sulfur hexafluoride (SF6) and hydrofluorocarbon, have become important emission reduction objects due to their strong global warming potential. In this work, the MnOx@Mn/SiC heterojunction was rationally designed and prepared. Because of the high electron coupling, the positively charged active-site MnOx@Mn (δ+) not only promotes the adsorption of SF6 but also acts as a donor to transport electrons to SF6, so that the adsorption and activation of SF6 are unified in one active site. Therefore, MnOx@Mn/SiC can effectively degrade SF6 above 450℃, and the degradation amount for 12 vol.% SF6 can reach 523.8 mL g-1 at 600℃. Furthermore, it also has good degradation performance on hydrofluorocarbons (R-22 and R-410A) even at 100℃. Given the cheap and easy scale-up synthesis, MnOx@Mn/SiC has the potential to reduce the emission of multiple fluorinated-gases in practical applications.","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"18 1","pages":""},"PeriodicalIF":22.1,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139410032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Promoted electro-oxidation kinetics in chromium-doped α‑Ni(OH)2 nanosheets for efficient selective conversion of methanol to formate 促进掺铬α-Ni(OH)2 纳米片的电氧化动力学，实现甲醇到甲酸盐的高效选择性转化

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-09 DOI: 10.1016/j.apcatb.2024.123716

Yu Fan, Xu Yang, Enhui Wei, Yuan Dong, Hongtao Gao, Xiliang Luo, Wenlong Yang

{"title":"Promoted electro-oxidation kinetics in chromium-doped α‑Ni(OH)2 nanosheets for efficient selective conversion of methanol to formate","authors":"Yu Fan, Xu Yang, Enhui Wei, Yuan Dong, Hongtao Gao, Xiliang Luo, Wenlong Yang","doi":"10.1016/j.apcatb.2024.123716","DOIUrl":"10.1016/j.apcatb.2024.123716","url":null,"abstract":"<div>Owing to the elusive pathways of methanol oxidation reaction (MOR) and the lack of applicable catalysts, the selective electro-oxidation of methanol to formate remains a challenging topic. Herein, we present a chromium-doping strategy to promote the MOR performance of α-Ni(OH)2 nanosheets with a high selectivity towards formate generation. Taking chromium-doped α-Ni(OH)2 nanosheets as an example, we further highlight the role of doping atoms in MOR by combining theoretical calculations with experimental measurements. It reveals that chromium doping can not only enhance the conductivity of α-Ni(OH)2 nanosheets, but also endow the catalyst with optimized kinetics for electroactive NiOOH formation and methanol absorption, thus resulting in a remarkable MOR current density of 141 mA cm−2 at 0.50 V vs. Ag/AgCl with a faradaic efficiency of 92.1% for formate. Furthermore, in situ infrared spectroscopy demonstrates that methanol is selectively oxidized to formate without further oxidation to CO2 over chromium-doped α‑Ni(OH)2 nanosheets in alkaline media.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123716"},"PeriodicalIF":22.1,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139410148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Si-doped ZnAl-LDH nanosheets by layer-engineering for efficient photoelectrocatalytic water splitting 通过层工程技术掺杂硅的 ZnAl-LDH 纳米片实现高效光电催化水分离

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-08 DOI: 10.1016/j.apcatb.2024.123706

Wentao Bao , Ying Tang , Jie Yu , Wenxia Yan , Chenxu Wang , Yangyang Li , Zhimou Wang , Jinfeng Yang , Lili Zhang , Feng Yu

{"title":"Si-doped ZnAl-LDH nanosheets by layer-engineering for efficient photoelectrocatalytic water splitting","authors":"Wentao Bao , Ying Tang , Jie Yu , Wenxia Yan , Chenxu Wang , Yangyang Li , Zhimou Wang , Jinfeng Yang , Lili Zhang , Feng Yu","doi":"10.1016/j.apcatb.2024.123706","DOIUrl":"10.1016/j.apcatb.2024.123706","url":null,"abstract":"<div>A highly efficient Si-doped ZnAl-LDH (denoted as Si-ZnAl-LDH nanosheet) catalyst that is derived from large-area chemical exfoliation for photoelectrocatalytic water splitting. The formation of amorphous Si-ZnAl-LDH nanosheets through chemical exfoliation or layer engineering leads to much more accessible surfaces that originally are not accessible in highly crystalline ZnAl-LDH sheets. The incorporation of Si to highly exfoliated ZnAl-LDH nanosheets generates more oxygen vacancies, increases the number of active sites, redistributes the local charge density of the active centers and effectively suppresses the recombination of the generated electron-hole pairs. Specifically, the overpotential of HER and OER for Si-ZnAl-LDH nanosheet is 108 mV and 260 mV, respectively, at current density of 10 mA cm−2 under light-assisted conditions. Total applied voltage is 1.673 V for water splitting in a full cell. This work provides a novel chemical exfoliation or layer-engineering strategy for the synthesis of scalable and cost-effective LDH nanosheets with efficient photoelectric response.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"346 ","pages":"Article 123706"},"PeriodicalIF":22.1,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139396703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unbiased photoelectrochemical carbon dioxide reduction shaping the future of solar fuels 塑造太阳能燃料未来的无偏光电化学二氧化碳还原技术

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-07 DOI: 10.1016/j.apcatb.2024.123707

Haijiao Lu, Lianzhou Wang

引用次数: 0

Penta-coordinated aluminum species: Anchoring Au single atoms for photocatalytic CO2 reduction 五配位铝物种：锚定金单质原子，实现光催化二氧化碳还原

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-06 DOI: 10.1016/j.apcatb.2024.123703

Shaoqiang Li , Yi-lei Li , Hui-min Bai , Dong-ying Zhou , Ying Liu , Rui-hong Liu , Bao-hang Han , Xinying Liu , Fa-tang Li

{"title":"Penta-coordinated aluminum species: Anchoring Au single atoms for photocatalytic CO2 reduction","authors":"Shaoqiang Li , Yi-lei Li , Hui-min Bai , Dong-ying Zhou , Ying Liu , Rui-hong Liu , Bao-hang Han , Xinying Liu , Fa-tang Li","doi":"10.1016/j.apcatb.2024.123703","DOIUrl":"10.1016/j.apcatb.2024.123703","url":null,"abstract":"<div>Searching substrate materials having inherent photocatalytic activity and interaction with single atoms remains challenge. Herein, amorphous Al2O3 containing penta-coordinated aluminum (AlV) species is synthesized using the solvothermal method and the Au single atom is anchored by AlV via the self-reduction strategy. The Al-O bond energy is weakened by introducing amorphous components, which benefits the release of oxygen atoms and the resultant change of Al coordination environment to a AlV species. The electron transfer between AlV and Au stabilizes the Au single atom. The introduction of the Au single atom occupying the position of O vacancy and anchored by AlV strengthened the chemical absorption abilities for CO2, lowered the energy barrier of CO generation and promoted the charge separation efficiency. The CO generation rate of the Au single atom anchored obtains extraordinary promotion in comparison with pristine Al2O3, resulting in an approximately 6-fold enhancement and 98% product CO selectivity.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123703"},"PeriodicalIF":22.1,"publicationDate":"2024-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139376212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interfacial electron interactions governed photoactivity and selectivity evolution of carbon dioxide photoreduction with spinel cobalt oxide based hollow hetero-nanocubes 基于尖晶石氧化钴的空心异质纳米管在二氧化碳光电还原过程中受界面电子相互作用影响的光活性和选择性演化

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-06 DOI: 10.1016/j.apcatb.2024.123705

Chao Cheng , Hengyue Xu , Maomao Ni , Changfa Guo , Yuanyuan Zhao , Yong Hu

{"title":"Interfacial electron interactions governed photoactivity and selectivity evolution of carbon dioxide photoreduction with spinel cobalt oxide based hollow hetero-nanocubes","authors":"Chao Cheng , Hengyue Xu , Maomao Ni , Changfa Guo , Yuanyuan Zhao , Yong Hu","doi":"10.1016/j.apcatb.2024.123705","DOIUrl":"10.1016/j.apcatb.2024.123705","url":null,"abstract":"<div>In this work, an efficient CO2 photoreduction catalyst based on Co3O4/ZnIn2S4 hollow hetero-nanocubes is precisely constructed via an in-situ transformation of cobalt-organic framework followed by a solvothermal reaction. Comprehensive in-situ spectroscopic analyses and theoretical calculations have revealed that the critical interfacial electron interactions (IEIs) effects on both photoactivity evolution and selectivity modulation in the Co3O4/ZnIn2S4 hetero-structure. As the content of ZnIn2S4 increases in the hetero-structure, the photoactivity exhibits a volcano-like evolution profile but the CH4 selectivity reduces monotonously. The improved photoactivity is attributed to the IEIs-promoted charge separation as well as the specific-surface-area effect in terms of electron unitization rate, and the electronic structure of Co3O4 is tuned and the energy barrier for the key reaction intermediate *CHO is reduced, leading to improved CH4 selection in comparison with bare Co3O4. The IEIs-mediated production selectivity is further verified by a Co3O4/CeO2 heterojunction, indicating a certain universality of the IEI effect.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123705"},"PeriodicalIF":22.1,"publicationDate":"2024-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139376426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable water decontamination in a fluidic sequential electrochemical reactor 流体序贯电化学反应器中的可持续水净化技术

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-06 DOI: 10.1016/j.apcatb.2024.123708

Mengjiao Xie , Wentian Zheng , Meng Sun , Shijie You , Yanbiao Liu

{"title":"Sustainable water decontamination in a fluidic sequential electrochemical reactor","authors":"Mengjiao Xie , Wentian Zheng , Meng Sun , Shijie You , Yanbiao Liu","doi":"10.1016/j.apcatb.2024.123708","DOIUrl":"10.1016/j.apcatb.2024.123708","url":null,"abstract":"<div>Here, we demonstrate an integrated fluidic sequential electrochemical system for effective water decontamination. The system consists of a Ti mesh anode deposited with nanoscale IrO2 and a CNT filter functionalized with nanoconfined Fe2O3. By conducting anodic oxygen evolution reaction (OER) and 2e– oxygen reduction reaction (ORR) sequential electrolysis, our system enables sustainable O2 generation at the anode, followed by transformation of O2 into H2O2 at the cathode, which then led to the production of 1O2 in the presence of nanoconfined Fe2O3. No chemical inputs were needed nor side products occurred during the whole sequential electrochemical processes. The effectiveness of the system was evaluated using tetracycline as a model emerging contaminant. Recirculating at 3 mL min–1, the system exhibited negligible iron and iridium leaching (≤0.01 mg L–1) and high tetracycline degradation efficiency (≥95%). Such excellent efficacy can be maintained across a wide pH range and in complicated water matrices.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123708"},"PeriodicalIF":22.1,"publicationDate":"2024-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139376354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

2D surfaces twisted to enhance electron freedom toward efficient advanced oxidation processes 二维表面扭曲增强电子自由度，实现高效的高级氧化过程

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-06 DOI: 10.1016/j.apcatb.2024.123701

Ximeng Xu , Shujing Zhang , Yuhao Wang , Nana Wang , Qinli Jiang , Xiaohong Liu , Qingqing Guan , Wei Zhang

{"title":"2D surfaces twisted to enhance electron freedom toward efficient advanced oxidation processes","authors":"Ximeng Xu , Shujing Zhang , Yuhao Wang , Nana Wang , Qinli Jiang , Xiaohong Liu , Qingqing Guan , Wei Zhang","doi":"10.1016/j.apcatb.2024.123701","DOIUrl":"10.1016/j.apcatb.2024.123701","url":null,"abstract":"<div>Two-dimensional (2D)-interface engineering for designing effective electron-rich catalyst center is pivotal in manipulating the catalytic behaviors and activity, but still challenging. Here, we’ve successfully twisted the surfaces of the 2D layered FeOCl, fulfilling the targeted fine-tuning of its Fe sites. The obtained new catalyst can boost peroxymonosulfate activation for reactive species with much lower energy barriers and efficiently oxidized target organic with almost 41 orders of magnitude faster reaction kinetics than pristine FeOCl. The increased degree of freedom of electron around Fe site has been identified as the key driver. The distorted geometry structure around Fe has led to an increased polarization of charge distribution, associating with less symmetric electron valence cloud and higher electron mobility. Thus, the twisted surfaces enable a much enhanced interfacial charge transfer between Fe site and the electron-deficient peroxymonosulfate. This work highlights the concept of twisted surface construction toward efficient advanced oxidation catalyst design.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123701"},"PeriodicalIF":22.1,"publicationDate":"2024-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139376389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unraveling oxygen vacancy changes of WO3 photoanodes for promoting oxygen evolution reaction 揭示促进氧进化反应的 WO3 光阳极氧空位变化

IF 22.1 1区化学

Applied Catalysis B: Environmental Pub Date : 2024-01-04 DOI: 10.1016/j.apcatb.2023.123682

Lianglin Yan , Guojun Dong , Xiaojuan Huang , Yun Zhang , Yingpu Bi

{"title":"Unraveling oxygen vacancy changes of WO3 photoanodes for promoting oxygen evolution reaction","authors":"Lianglin Yan , Guojun Dong , Xiaojuan Huang , Yun Zhang , Yingpu Bi","doi":"10.1016/j.apcatb.2023.123682","DOIUrl":"10.1016/j.apcatb.2023.123682","url":null,"abstract":"<div>Oxygen vacancy (VO) on semiconductor photoanode plays an important role in enhancing photoelectrochemical water oxidation performances. Nonetheless, there is still a lack of definitive elucidation regarding the structural changes and their impact on charge transport during the oxygen evolution reaction (OER). Herein, oxygen vacancies were rationally introduced on WO3 nanoflake photoanodes via Ar-plasma engraving, resulting in a threefold increase in the photocurrent density of 2.76 mA cm−2 at 1.23 VRHE under AM 1.5 G solar irradiation compared to the pristine WO3 photoanode. Comprehensive experiments and theoretical calculations reveal that the self-healing process of surface oxygen vacancies on WO3 photoanodes should be more easily achieved by capturing oxygen atoms from adsorbed H2O molecules. However, some survived oxygen vacancies in the subsurface could effectively increase the charge carrier density and provide the additional driving force to accelerate the interfacial charge transport, leading to enhanced photoelectrochemical (PEC) activities. More importantly, the oxygen vacancy self-healing on metal-oxide semiconductors is a universal phenomenon, which might bring new insights for design and construction of highly efficient photoanodes for PEC water oxidation.</div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"345 ","pages":"Article 123682"},"PeriodicalIF":22.1,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139094462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0