Chinese Journal of Catalysis最新文献

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Advances in the studies of the supported ruthenium catalysts for CO2 methanation 用于二氧化碳甲烷化的支撑钌催化剂研究进展
IF 15.7 1区 化学
Chinese Journal of Catalysis Pub Date : 2024-08-01 DOI: 10.1016/S1872-2067(24)60090-2
Chenyang Shen , Menghui Liu , Song He , Haibo Zhao , Chang-jun Liu
{"title":"Advances in the studies of the supported ruthenium catalysts for CO2 methanation","authors":"Chenyang Shen ,&nbsp;Menghui Liu ,&nbsp;Song He ,&nbsp;Haibo Zhao ,&nbsp;Chang-jun Liu","doi":"10.1016/S1872-2067(24)60090-2","DOIUrl":"10.1016/S1872-2067(24)60090-2","url":null,"abstract":"<div><p>CO<sub>2</sub> methanation has a potential in the large-scale utilization of carbon dioxide. It has also been considered to be useful for the renewable energy storage. The commercial pipeline for natural gas transportation can be directly applied for the methane product of CO<sub>2</sub> methanation. The supported ruthenium (Ru) catalyst has been confirmed to be active and stable for CO<sub>2</sub> methanation with its high ability in the dissociation of hydrogen and the strong binding of carbon monoxide. CO<sub>2</sub> methanation over the supported Ru catalyst is structure sensitive. The size of the Ru catalyst and the support have significant effects on the activity and the mechanism. A significant challenge remained is the structural controllable preparation of the supported Ru catalyst toward a sufficiently high low-temperature activity. In this review, the recent progresses in the investigations of the supported Ru catalysts for CO<sub>2</sub> methanation are summarized. The challenges and the future developments are also discussed.</p></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"63 ","pages":"Pages 1-15"},"PeriodicalIF":15.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142049207","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
Chalcogenide-based S-scheme heterojunction photocatalysts 基于卤化铝的 S 型异质结光催化剂
IF 15.7 1区 化学
Chinese Journal of Catalysis Pub Date : 2024-08-01 DOI: 10.1016/S1872-2067(24)60072-0
Chunguang Chen , Jinfeng Zhang , Hailiang Chu , Lixian Sun , Graham Dawson , Kai Dai
{"title":"Chalcogenide-based S-scheme heterojunction photocatalysts","authors":"Chunguang Chen ,&nbsp;Jinfeng Zhang ,&nbsp;Hailiang Chu ,&nbsp;Lixian Sun ,&nbsp;Graham Dawson ,&nbsp;Kai Dai","doi":"10.1016/S1872-2067(24)60072-0","DOIUrl":"10.1016/S1872-2067(24)60072-0","url":null,"abstract":"<div><p>The unique photocatalytic mechanism of S-scheme heterojunction can be used to study new and efficient photocatalysts. By carefully selecting semiconductors for S-scheme heterojunction photocatalysts, it is possible to reduce the rate of photogenerated carrier recombination and increase the conversion efficiency of light into energy. Chalcogenides are a group of compounds that include sulfides and selenides (e.g., CdS, ZnS, Bi<sub>2</sub>S<sub>3</sub>, MoS<sub>2</sub>, ZnSe, CdSe, and CuSe). Chalcogenides have attracted considerable attention as heterojunction photocatalysts owing to their narrow bandgap, wide light absorption range, and excellent photoreduction properties. This paper presents a thorough analysis of S-scheme heterojunction photocatalysts based on chalcogenides. Following an introduction to the fundamental characteristics and benefits of S-scheme heterojunction photocatalysts, various chalcogenide-based S-scheme heterojunction photocatalyst synthesis techniques are summarized. These photocatalysts are used in numerous significant photocatalytic reactions, including the reduction of carbon dioxide, synthesis of hydrogen peroxide, conversion of organic matter, generation of hydrogen from water, nitrogen fixation, degradation of organic pollutants, and sterilization. In addition, cutting-edge characterization techniques, including <em>in situ</em> characterization techniques, are discussed to validate the steady and transient states of photocatalysts with an S-scheme heterojunction. Finally, the design and challenges of chalcogenide-based S-scheme heterojunction photocatalysts are explored and recommended in light of state-of-the-art research.</p></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"63 ","pages":"Pages 81-108"},"PeriodicalIF":15.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142050414","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
Continuous-flow electrosynthesis of urea and oxalic acid by CO2-nitrate reduction and glycerol oxidation 通过二氧化碳硝酸盐还原和甘油氧化连续流电合成尿素和草酸
IF 15.7 1区 化学
Chinese Journal of Catalysis Pub Date : 2024-08-01 DOI: 10.1016/S1872-2067(24)60085-9
Shuanglong Zhou, Yue Shi, Yu Dai, Tianrong Zhan, Jianping Lai, Lei Wang
{"title":"Continuous-flow electrosynthesis of urea and oxalic acid by CO2-nitrate reduction and glycerol oxidation","authors":"Shuanglong Zhou,&nbsp;Yue Shi,&nbsp;Yu Dai,&nbsp;Tianrong Zhan,&nbsp;Jianping Lai,&nbsp;Lei Wang","doi":"10.1016/S1872-2067(24)60085-9","DOIUrl":"10.1016/S1872-2067(24)60085-9","url":null,"abstract":"<div><p>Urea and oxalic acid are critical component in various chemical manufacturing industries. However, achieving simultaneous generation of urea and oxalic acid in a continuous-flow electrolyzer is a challenge. Herein, we report a continuous-flow electrolyzer equipped with 9-square centimeter-effective area gas diffusion electrodes (GDE) which can simultaneously catalyze the glycerol oxidation reaction in the anode region and the reduction reaction of CO<sub>2</sub> and nitrate in the cathode region, producing oxalic acid and urea at both the anode and cathode, respectively. The current density at low cell voltage (0.9 V) remained above 18.7 mA cm<sup>–2</sup> for 10 consecutive electrolysis cycles (120 h in total), and the Faraday efficiency of oxalic acid (67.1%) and urea (70.9%) did not decay. Experimental and theoretical studies show that in terms of the formation of C–N bond at the cathode, Pd-sites can provide protons for the hydrogenation process of CO<sub>2</sub> and NO<sub>3</sub><sup>–</sup>, Cu-sites can promote the generation of *COOH and Bi-sites can stabilize *COOH. In addition, in terms of glycerol oxidation, the introduction of Cu and Bi into Pd metallene promotes the oxidation of hydroxyl groups and the cleavage of C–C bond in glycerol molecules, respectively.</p></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"63 ","pages":"Pages 270-281"},"PeriodicalIF":15.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142050448","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
Enhancing selectivity in acidic CO2 electrolysis: Cation effects and catalyst innovation 提高酸性二氧化碳电解的选择性:阳离子效应和催化剂创新
IF 15.7 1区 化学
Chinese Journal of Catalysis Pub Date : 2024-08-01 DOI: 10.1016/S1872-2067(24)60073-2
Zichao Huang, Tinghui Yang, Yingbing Zhang, Chaoqun Guan, Wenke Gui, Min Kuang, Jianping Yang
{"title":"Enhancing selectivity in acidic CO2 electrolysis: Cation effects and catalyst innovation","authors":"Zichao Huang,&nbsp;Tinghui Yang,&nbsp;Yingbing Zhang,&nbsp;Chaoqun Guan,&nbsp;Wenke Gui,&nbsp;Min Kuang,&nbsp;Jianping Yang","doi":"10.1016/S1872-2067(24)60073-2","DOIUrl":"10.1016/S1872-2067(24)60073-2","url":null,"abstract":"<div><p>The electrochemical reduction of CO<sub>2</sub> (eCO<sub>2</sub>R) under ambient conditions is crucial for reducing carbon emissions and achieving carbon neutrality. Despite progress with alkaline and neutral electrolytes, their efficiency is limited by (bi)carbonates formation. Acidic media have emerged as a solution, addressing the (bi)carbonates challenge but introducing the issue of the hydrogen evolution reaction (HER), which reduces CO<sub>2</sub> conversion efficiency in acidic environments. This review focuses on enhancing the selectivity of acidic CO<sub>2</sub> electrolysis. It commences with an overview of the latest advancements in acidic CO<sub>2</sub> electrolysis, focusing on product selectivity and electrocatalytic activity enhancements. It then delves into the critical factors shaping selectivity in acidic CO<sub>2</sub> electrolysis, with a special emphasis on the influence of cations and catalyst design. Finally, the research challenges and personal perspectives of acidic CO<sub>2</sub> electrolysis are suggested.</p></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"63 ","pages":"Pages 61-80"},"PeriodicalIF":15.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142050413","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
Self-assembled S-scheme In2.77S4/K+-doped g-C3N4 photocatalyst with selective O2 reduction pathway for efficient H2O2 production using water and air 具有选择性 O2 还原途径的自组装 S 型 In2.77S4/K+ 掺杂 g-C3N4 光催化剂,可利用水和空气高效生产 H2O2
IF 15.7 1区 化学
Chinese Journal of Catalysis Pub Date : 2024-08-01 DOI: 10.1016/S1872-2067(24)60077-X
Qiqi Zhang , Hui Miao , Jun Wang , Tao Sun , Enzhou Liu
{"title":"Self-assembled S-scheme In2.77S4/K+-doped g-C3N4 photocatalyst with selective O2 reduction pathway for efficient H2O2 production using water and air","authors":"Qiqi Zhang ,&nbsp;Hui Miao ,&nbsp;Jun Wang ,&nbsp;Tao Sun ,&nbsp;Enzhou Liu","doi":"10.1016/S1872-2067(24)60077-X","DOIUrl":"10.1016/S1872-2067(24)60077-X","url":null,"abstract":"<div><p>The development of an efficient artificial H<sub>2</sub>O<sub>2</sub> photosynthesis system is a challenging work using H<sub>2</sub>O and O<sub>2</sub> as starting materials. Herein, 3D In<sub>2.77</sub>S<sub>4</sub> nanoflower precursor was <em>in-situ</em> deposited on K<sup>+</sup>-doped g-C<sub>3</sub>N<sub>4</sub> (KCN) nanosheets using a solvothermal method, then In<sub>2.77</sub>S<sub>4</sub>/KCN (IS/KCN) heterojunction with an intimate interface was obtained after a calcination process. The investigation shows that the photocatalytic H<sub>2</sub>O<sub>2</sub> production rate of 50IS/KCN can reach up to 1.36 mmol g<sup>−1</sup> h<sup>−1</sup> without any sacrificial reagents under visible light irradiation, which is 9.2 times and 4.1 times higher than that of KCN and In<sub>2.77</sub>S<sub>4</sub>, respectively. The enhanced activity of the above composite can be mainly attributed to the S-scheme charge transfer route between KCN and In<sub>2.77</sub>S<sub>4</sub> according to density functional theory calculations, electron paramagnetic resonance and free radical capture tests, leading to an expanded light response range and rapid charge separation at their interface, as well as preserving the active electrons and holes for H<sub>2</sub>O<sub>2</sub> production. Besides, the unique 3D nanostructure and surface hydrophobicity of IS/KCN facilitate the diffusion and transportation of O<sub>2</sub> around the active centers, the energy barriers of O<sub>2</sub> protonation and H<sub>2</sub>O<sub>2</sub> desorption steps are effectively reduced over the composite. In addition, this system also exhibits excellent light harvesting ability and stability. This work provides a potential strategy to explore a sustainable H<sub>2</sub>O<sub>2</sub> photosynthesis pathway through the design of heterojunctions with intimate interfaces and desired reaction thermodynamics and kinetics.</p></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"63 ","pages":"Pages 176-189"},"PeriodicalIF":15.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142050421","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
Single-atom catalysts based on polarization switching of ferroelectric In2Se3 for N2 reduction 基于铁电 In2Se3 极化转换的单原子催化剂用于还原 N2
IF 15.7 1区 化学
Chinese Journal of Catalysis Pub Date : 2024-08-01 DOI: 10.1016/S1872-2067(24)60084-7
Nan Mu , Tingting Bo , Yugao Hu , Ruixin Xu , Yanyu Liu , Wei Zhou
{"title":"Single-atom catalysts based on polarization switching of ferroelectric In2Se3 for N2 reduction","authors":"Nan Mu ,&nbsp;Tingting Bo ,&nbsp;Yugao Hu ,&nbsp;Ruixin Xu ,&nbsp;Yanyu Liu ,&nbsp;Wei Zhou","doi":"10.1016/S1872-2067(24)60084-7","DOIUrl":"10.1016/S1872-2067(24)60084-7","url":null,"abstract":"<div><p>The polarization switching plays a crucial role in controlling the final products in the catalytic process. The effect of polarization orientation on nitrogen reduction was investigated by anchoring transition metal atoms to form active centers on ferroelectric material In<sub>2</sub>Se<sub>3</sub>. During the polarization switching process, the difference in surface electrostatic potential leads to a redistribution of electronic states. This affects the interaction strength between the adsorbed small molecules and the catalyst substrate, thereby altering the reaction barrier. In addition, the surface states must be considered to prevent the adsorption of other small molecules (such as *O, *OH, and *H). Furthermore, the V@?-In<sub>2</sub>Se<sub>3</sub> possesses excellent catalytic properties, high electrochemical and thermodynamic stability, which facilitates the catalytic process. Machine learning also helps us further explore the underlying mechanisms. The systematic investigation provides novel insights into the design and application of two-dimensional switchable ferroelectric catalysts for various chemical processes.</p></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"63 ","pages":"Pages 244-257"},"PeriodicalIF":15.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142050446","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
Boosting CO2 photoreduction by synergistic optimization of multiple processes through metal vacancy engineering 通过金属空位工程协同优化多个过程,促进二氧化碳光还原
IF 15.7 1区 化学
Chinese Journal of Catalysis Pub Date : 2024-08-01 DOI: 10.1016/S1872-2067(24)60074-4
Jinlong Wang , Dongni Liu , Mingyang Li , Xiaoyi Gu , Shiqun Wu , Jinlong Zhang
{"title":"Boosting CO2 photoreduction by synergistic optimization of multiple processes through metal vacancy engineering","authors":"Jinlong Wang ,&nbsp;Dongni Liu ,&nbsp;Mingyang Li ,&nbsp;Xiaoyi Gu ,&nbsp;Shiqun Wu ,&nbsp;Jinlong Zhang","doi":"10.1016/S1872-2067(24)60074-4","DOIUrl":"10.1016/S1872-2067(24)60074-4","url":null,"abstract":"<div><p>The photoreduction of greenhouse gas CO<sub>2</sub> using photocatalytic technologies not only benefits environmental remediation but also facilitates the production of raw materials for chemicals. However, the efficiency of CO<sub>2</sub> photoreduction remains generally low due to the challenging activation of CO<sub>2</sub> and the limited light absorption and separation of charge. Defect engineering of catalysts represents a pivotal strategy to enhance the photocatalytic activity for CO<sub>2</sub>, with most research on metal oxide catalysts focusing on the creation of anionic vacancies. The exploration of metal vacancies and their effects, however, is still underexplored. In this study, we prepared an In<sub>2</sub>O<sub>3</sub> catalyst with indium vacancies (V<sub>In</sub>) through defect engineering for CO<sub>2</sub> photoreduction. Experimental and theoretical calculations results demonstrate that V<sub>In</sub> not only facilitate light absorption and charge separation in the catalyst but also enhance CO<sub>2</sub> adsorption and reduce the energy barrier for the formation of the key intermediate *COOH during CO<sub>2</sub> reduction. Through metal vacancy engineering, the activity of the catalyst was 7.4 times, reaching an outstanding rate of 841.32 µmol g<sup>‒1</sup> h<sup>‒1</sup>. This work unveils the mechanism of metal vacancies in CO<sub>2</sub> photoreduction and provides theoretical guidance for the development of novel CO<sub>2</sub> photoreduction catalysts.</p></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"63 ","pages":"Pages 202-212"},"PeriodicalIF":15.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142050389","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
Recent advances in design of hydrogen evolution reaction electrocatalysts at high current density: A review 高电流密度氢进化反应电催化剂设计的最新进展:综述
IF 15.7 1区 化学
Chinese Journal of Catalysis Pub Date : 2024-08-01 DOI: 10.1016/S1872-2067(24)60076-8
Zhipeng Li , Xiaobin Liu , Qingping Yu , Xinyue Qu , Jun Wan , Zhenyu Xiao , Jingqi Chi , Lei Wang
{"title":"Recent advances in design of hydrogen evolution reaction electrocatalysts at high current density: A review","authors":"Zhipeng Li ,&nbsp;Xiaobin Liu ,&nbsp;Qingping Yu ,&nbsp;Xinyue Qu ,&nbsp;Jun Wan ,&nbsp;Zhenyu Xiao ,&nbsp;Jingqi Chi ,&nbsp;Lei Wang","doi":"10.1016/S1872-2067(24)60076-8","DOIUrl":"10.1016/S1872-2067(24)60076-8","url":null,"abstract":"<div><p>The electrolysis of water powered by renewable energy sources offers a promising method of “green hydrogen” production, which is considered to be at the heart of future carbon-neutral energy systems. In the past decades, researchers have reported a number of hydrogen evolution reaction (HER) electrocatalysts with activity comparable to that of commercial Pt/C, but most of them are tested within a small current density range, typically no more than 500 mA cm<sup>–2</sup>. To realize the industrial application of hydrogen production from water electrolysis, it is essential to develop high-efficiency HER electrocatalysts at high current density (HCD ≥ 500 mA cm<sup>–2</sup>). Nevertheless, it remains challenging and significant to rational design HCD electrocatalysts for HER. In this paper, the design strategy of HCD electrocatalysts is discussed, and some HCD electrocatalysts for HER are reviewed in seven categories (alloy, metal oxide, metal hydroxide, metal sulfide/selenide, metal nitride, metal phosphide and other derived electrocatalysts). At the end of this article, we also propose some viewpoints and prospects for the future development and research directions of HCD electrocatalysts for HER.</p></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"63 ","pages":"Pages 33-60"},"PeriodicalIF":15.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142050412","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
Realizing efficient electrochemical oxidation of 5-hydroxymethylfurfural on a freestanding Ni(OH)2/nickel foam catalyst 在独立的镍(OH)2/泡沫镍催化剂上实现 5-羟甲基糠醛的高效电化学氧化
IF 15.7 1区 化学
Chinese Journal of Catalysis Pub Date : 2024-08-01 DOI: 10.1016/S1872-2067(24)60089-6
Yunying Huo , Cong Guo , Yongle Zhang , Jingyi Liu , Qiao Zhang , Zhiting Liu , Guangxing Yang , Rengui Li , Feng Peng
{"title":"Realizing efficient electrochemical oxidation of 5-hydroxymethylfurfural on a freestanding Ni(OH)2/nickel foam catalyst","authors":"Yunying Huo ,&nbsp;Cong Guo ,&nbsp;Yongle Zhang ,&nbsp;Jingyi Liu ,&nbsp;Qiao Zhang ,&nbsp;Zhiting Liu ,&nbsp;Guangxing Yang ,&nbsp;Rengui Li ,&nbsp;Feng Peng","doi":"10.1016/S1872-2067(24)60089-6","DOIUrl":"10.1016/S1872-2067(24)60089-6","url":null,"abstract":"<div><p>With the continuous improvement of solar energy production capacity, how to effectively use the electricity generated by renewable solar energy for electrochemical conversion of biomass is a hot topic. Electrochemical conversion of 5-hydroxymethylfurfural (HMF) to biofuels and value-added oxygenated commodity chemicals provides a promising and alternative pathway to convert renewable electricity into chemicals. Although nickel-based eletrocatalysts are well-known for HMF oxidation, their relatively low intrinsic activity, poor conductivity and stability still limit the potential applications. Here, we report the fabrication of a freestanding nickel-based electrode, in which Ni(OH)<sub>2</sub> species were <em>in-situ</em> constructed on Ni foam (NF) support using a facile acid-corrosion-induced strategy. The Ni(OH)<sub>2</sub>/NF electrocatalyst exhibits stable and efficient electrochemical HMF oxidation into 2,5-furandicarboxylic acid (FDCA) with HMF conversion close to 100% with high Faraday efficiency. <em>In-situ</em> formation strategy results in a compact interface between Ni(OH)<sub>2</sub> and NF, which contributes to good conductivity and stability during electrochemical reactions. The superior performance benefits from dynamic cyclic evolution of Ni(OH)<sub>2</sub> to NiOOH, which acts as the reactive species for HMF oxidation to FDCA. A scaled-up device based on a continuous-flow electrolytic cell was also established, giving stable operation with a high FDCA production rate of 27 mg h<sup>−1</sup> cm<sup>−2</sup>. This job offers a straightforward, economical, and scalable design strategy to design efficient and durable catalysts for electrochemical conversion of valuable chemicals.</p></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"63 ","pages":"Pages 282-291"},"PeriodicalIF":15.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142050449","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
Engineering the coordination structure of Cu for enhanced photocatalytic production of C1 chemicals from glucose 设计铜的配位结构,提高葡萄糖光催化生产 C1 化学物质的能力
IF 15.7 1区 化学
Chinese Journal of Catalysis Pub Date : 2024-08-01 DOI: 10.1016/S1872-2067(24)60098-7
Lulu Sun , Shiyang Liu , Taifeng Liu , Dongqiang Lei , Nengchao Luo , Feng Wang
{"title":"Engineering the coordination structure of Cu for enhanced photocatalytic production of C1 chemicals from glucose","authors":"Lulu Sun ,&nbsp;Shiyang Liu ,&nbsp;Taifeng Liu ,&nbsp;Dongqiang Lei ,&nbsp;Nengchao Luo ,&nbsp;Feng Wang","doi":"10.1016/S1872-2067(24)60098-7","DOIUrl":"10.1016/S1872-2067(24)60098-7","url":null,"abstract":"<div><p>Photocatalytic decomposition of sugars is a promising way of providing H<sub>2</sub>, CO, and HCOOH as sustainable energy vectors. However, the production of C<sub>1</sub> chemicals requires the cleavage of robust C−C bonds in sugars with concurrent production of H<sub>2</sub>, which remains challenging. Here, the photocatalytic activity for glucose decomposition to HCOOH, CO (C<sub>1</sub> chemicals), and H<sub>2</sub> on Cu/TiO<sub>2</sub> was enhanced by nitrogen doping. Owing to nitrogen doping, atomically dispersed and stable Cu sites resistant to light irradiation are formed on Cu/TiO<sub>2</sub>. The electronic interaction between Cu and nitrogen ions originates valence band structure and defect levels composed of N 2<em>p</em> orbit, distinct from undoped Cu/TiO<sub>2</sub>. Therefore, the lifetime of charge carriers is prolonged, resulting in the production of C<sub>1</sub> chemicals and H<sub>2</sub> with productivities 1.7 and 2.1 folds that of Cu/TiO<sub>2</sub>. This work provides a strategy to design coordinatively stable Cu ions for photocatalytic biomass conversion.</p></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"63 ","pages":"Pages 234-243"},"PeriodicalIF":15.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142050392","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
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