Chinese Journal of Catalysis最新文献_第9页

Role of Y2O3 in Cu/ZnO/Y2O3 catalysts for CO2 hydrogenation to methanol Cu/ZnO/Y2O3催化剂在CO2加氢制甲醇中的作用

IF 15.7 1区化学

Chinese Journal of Catalysis Pub Date : 2025-03-01 DOI: 10.1016/S1872-2067(24)60220-2

Ziguo Cai , Xuefeng Yu , Penglong Wang , Huifang Wu , Ruifeng Chong , Limin Ren , Tao Hu , Xiang Wang

引用次数: 0

Bimetallic NixFe2–xP cocatalyst with tunable electronic structure for enhanced photocatalytic benzyl alcohol oxidation coupled with H2 evolution over red phosphorus 具有可调电子结构的双金属NixFe2-xP助催化剂在红磷上增强光催化苯甲醇氧化和H2析出

IF 15.7 1区化学

Chinese Journal of Catalysis Pub Date : 2025-03-01 DOI: 10.1016/S1872-2067(24)60236-6

Shuang Li, Haili Lin, Xuemei Jia, Xin Jin, Qianlong Wang, Xinyue Li, Shifu Chen, Jing Cao

{"title":"Bimetallic NixFe2–xP cocatalyst with tunable electronic structure for enhanced photocatalytic benzyl alcohol oxidation coupled with H2 evolution over red phosphorus","authors":"Shuang Li, Haili Lin, Xuemei Jia, Xin Jin, Qianlong Wang, Xinyue Li, Shifu Chen, Jing Cao","doi":"10.1016/S1872-2067(24)60236-6","DOIUrl":"10.1016/S1872-2067(24)60236-6","url":null,"abstract":"<div><div>Although bimetallic phosphide cocatalysts have attracted considerable interest in photocatalysis research owing to their advantageous thermodynamic characteristics, superstable and efficient cocatalysts have rarely been produced through the modulation of their structure and composition. In this study, a series of bimetallic nickel-iron phosphide (NixFe2–xP, where 0 < x < 2) cocatalysts with controllable structures and overpotentials were designed by adjusting the atomic ratio of Ni/Fe onto nonmetallic elemental red phosphorus (RP) for the photocatalytic selective oxidation of benzyl alcohol (BA) coupled with hydrogen production. The catalysts exhibited an outstanding photocatalytic activity for benzaldehyde and a high H2 yield. The RP regulated by bimetallic phosphide cocatalysts (NixFe2–xP) demonstrated higher photocatalytic oxidation-reduction activity than that regulated by monometallic phosphide cocatalysts (Ni2P and Fe2P). In particular, the RP regulated by Ni1.25Fe0.75P exhibited the best photocatalytic performance. In addition, experimental and theoretical calculations further illustrated that Ni1.25Fe0.75P, with the optimized electronic structure, possessed good electrical conductivity and provided strong adsorption and abundant active sites, thereby accelerating electron migration and lowering the reaction energy barrier of RP. This finding offers valuable insights into the rational design of highly effective cocatalysts aimed at optimizing the photocatalytic activity of composite photocatalysts.</div></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"70 ","pages":"Pages 363-377"},"PeriodicalIF":15.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715316","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

Atomically dispersed Ba sites as electron promoters to enhance the performance for photoreduction of CO2 原子分散的Ba位作为电子促进剂提高CO2光还原性能

IF 15.7 1区化学

Chinese Journal of Catalysis Pub Date : 2025-03-01 DOI: 10.1016/S1872-2067(24)60226-3

Lina Zhang, Guowei Liu, Xinyan Deng, Qiuye Li, Jianjun Yang

{"title":"Atomically dispersed Ba sites as electron promoters to enhance the performance for photoreduction of CO2","authors":"Lina Zhang, Guowei Liu, Xinyan Deng, Qiuye Li, Jianjun Yang","doi":"10.1016/S1872-2067(24)60226-3","DOIUrl":"10.1016/S1872-2067(24)60226-3","url":null,"abstract":"<div><div>The highly photocatalytic conversion of CO2 into valuable products is a promising method for mitigating the global greenhouse effect and increasing the energy supply. However, the utilization of electron-deficient active sites to activate CO2 leads to lower photocatalytic efficiency and selectivity. One effective strategy to improve CO2 photoreduction performance is making precise adjustments to the electronic structure of the photocatalyst. Herein, the defective TiO2 modified with Cu, Ba, and CuBa metal sites is synthesized via a simple photo-deposition method and applied for photoreduction of CO2. Among the prepared catalysts, Cu1Ba3/TiO2-SBO (TiO2-SBO: TiO2 with surface and bulk oxygen vacancies) has been demonstrated to possess excellent photocatalytic conversion of CO2, with the activity levels of the CO and CH4 that are 8 and 6 times higher than the bare TiO2-SBO, and the electron selectivity of CO is up to 53%. The results reveal that oxygen vacancies and CuBa bimetallic sites have a synergistic ability to facilitate the separation of photogenerated carriers. Furthermore, the electron-donor Ba metal enables modulation of the electronic structure of Cu co-catalysts, generating electron-rich Cu metal sites that accelerate the activation of CO2. Meanwhile, the theoretical calculations prove that the Cu1Ba3/TiO2-SBO has the stronger CO2 adsorption energy, and its strengthened binding of *COOH and the markedly reduced formation energy of CO and *CO intermediates boost the conversion of COOH to CO and enhance the selectivity of CO. Thereby, the defective TiO2 modified with CuBa bimetal represents a more effective measure for CO2 reduction into valuable products.</div></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"70 ","pages":"Pages 341-352"},"PeriodicalIF":15.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715314","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

S-scheme heterojunction with intraband defect levels for artificial photosynthesis 具有带内缺陷水平的s型异质结用于人工光合作用

IF 15.7 1区化学

Chinese Journal of Catalysis Pub Date : 2025-03-01 DOI: 10.1016/S1872-2067(24)60223-8

Xiaoming Liu , Zhifeng Jiang

引用次数: 0

Synergistic sites over the ZnxZrO catalyst for targeted cleavage of the C–H bonds of ethane in tandem with CO2 activation ZnxZrO催化剂上的协同位点对乙烷的C-H键进行靶向裂解，并与CO2激活

IF 15.7 1区化学

Chinese Journal of Catalysis Pub Date : 2025-03-01 DOI: 10.1016/S1872-2067(24)60235-4

Wenjun Qiang , Duohua Liao , Maolin Wang , Lingzhen Zeng , Weiqi Li , Xuedong Ma , Liang Yang , Shuang Li , Ding Ma

{"title":"Synergistic sites over the ZnxZrO catalyst for targeted cleavage of the C–H bonds of ethane in tandem with CO2 activation","authors":"Wenjun Qiang , Duohua Liao , Maolin Wang , Lingzhen Zeng , Weiqi Li , Xuedong Ma , Liang Yang , Shuang Li , Ding Ma","doi":"10.1016/S1872-2067(24)60235-4","DOIUrl":"10.1016/S1872-2067(24)60235-4","url":null,"abstract":"<div><div>The CO2-assisted oxidative dehydrogenation of ethane (CO2-ODHE) provides a promising way to produce ethylene and utilize CO2. Simultaneous upgrading of ethane into the high value–added chemical products and the reduction of greenhouse gas CO2 emissions could be achieved. However, the targeted breaking of the C–C/C–H bonds of ethane is still a challenge for the designed catalysts. In this paper, ZnO-doped ZrO2 bifunctional catalysts (ZnxZrO) with different Zn/Zr molar ratios were prepared by the deposition-precipitation method, and the functions of various sites for CO2-ODHE reaction were revealed by in situ characterizations and ethane pulse experiment: the medium-strength acidic Zn-O-Zr sites are responsible for the purposefully cracking of ethane C–H bonds to ethylene, while the more oxygen vacancies (OV) created by the introduction of Zn2+ are responsible for the efficient activation C=O bonds of CO2, thus promoting the RWGS reaction. In addition, the Zn0.2ZrO catalyst demonstrated excellent catalytic performances, with C2H6 conversion, C2H4 yield, and CO2 conversion about 19.1%, 10.5%, and 10.6% within 5 h, respectively (600 °C, GHSV = 3000 mL/(g·h)). Especially, the initial ethylene space-time yield of 355.5 μmol/(min·g) was obtained under 6000 mL/(g·h); Finally, the tandem reaction mechanism of ethane dehydrogenation and RWGS was revealed.</div></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"70 ","pages":"Pages 272-284"},"PeriodicalIF":15.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715415","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

Rational construction of S-scheme CdS quantum dots/In2O3 hollow nanotubes heterojunction for enhanced photocatalytic H2 evolution S-scheme CdS量子点/In2O3空心纳米管异质结的合理构建促进光催化析氢

IF 15.7 1区化学

Chinese Journal of Catalysis Pub Date : 2025-03-01 DOI: 10.1016/S1872-2067(24)60213-5

Yong-Hui Wu, Yu-Qing Yan, Yi-Xiang Deng, Wei-Ya Huang, Kai Yang, Kang-Qiang Lu

{"title":"Rational construction of S-scheme CdS quantum dots/In2O3 hollow nanotubes heterojunction for enhanced photocatalytic H2 evolution","authors":"Yong-Hui Wu, Yu-Qing Yan, Yi-Xiang Deng, Wei-Ya Huang, Kai Yang, Kang-Qiang Lu","doi":"10.1016/S1872-2067(24)60213-5","DOIUrl":"10.1016/S1872-2067(24)60213-5","url":null,"abstract":"<div><div>The rapid recombination of photogenerated carriers poses a significant limitation on the use of CdS quantum dots (QDs) in photocatalysis. Herein, the construction of a novel S-scheme heterojunction between cubic-phase CdS QDs and hollow nanotube In2O3 is successfully achieved using an electrostatic self-assembly method. Under visible light irradiation, all CdS-In₂O₃ composites exhibit higher hydrogen evolution efficiency compared to pure CdS QDs. Notably, the photocatalytic H2 evolution rate of the optimal CdS-7%In2O3 composite is determined to be 2258.59 μmol g−1 h−1, approximately 12.3 times higher than that of pure CdS. The cyclic test indicates that the CdS-In₂O₃ composite maintains considerable activity even after 5 cycles, indicating its excellent stability. In situ X-ray photoelectron spectroscopy and density functional theory calculations confirm that carrier migration in CdS-In2O3 composites adheres to a typical S-scheme heterojunction mechanism. Additionally, a series of characterizations demonstrate that the formation of S-scheme heterojunctions between In2O3 and CdS inhibits charge recombination and accelerates the separation and migration of photogenerated carriers in the CdS QDs, thus achieving enhanced photocatalytic performance. This work elucidates the pivotal role of S-scheme heterojunctions in photocatalytic H2 production and offers novel insights into the construction of effective composite photocatalysts.</div></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"70 ","pages":"Pages 333-340"},"PeriodicalIF":15.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716129","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

Targeted construction of high-performance single-atom platinum-based electrocatalysts for hydrogen evolution reaction 高性能单原子铂基析氢电催化剂的定向构建

IF 15.7 1区化学

Chinese Journal of Catalysis Pub Date : 2025-02-01 DOI: 10.1016/S1872-2067(24)60199-3

Jing Liu , Xiandi Ma , Jeonghan Roh , Dongwon Shin , Ara Cho , Jeong Woo Han , Jianping Long , Zhen Zhou , Menggai Jiao , Kug-Seung Lee , EunAe Cho

{"title":"Targeted construction of high-performance single-atom platinum-based electrocatalysts for hydrogen evolution reaction","authors":"Jing Liu , Xiandi Ma , Jeonghan Roh , Dongwon Shin , Ara Cho , Jeong Woo Han , Jianping Long , Zhen Zhou , Menggai Jiao , Kug-Seung Lee , EunAe Cho","doi":"10.1016/S1872-2067(24)60199-3","DOIUrl":"10.1016/S1872-2067(24)60199-3","url":null,"abstract":"<div><div>Exploring platinum single-atom electrocatalysts (SACs) is of great significance for effectively catalyzing the hydrogen evolution reaction in order to maximize the utilization of metal atoms. Herein, ruthenium clusters with several atoms (Rux) supported on nitrogen-doped, cost-efficient Black Pearls 2000 (RuxNBP), were synthesized as initial materials via a simple hydrothermal method. Then, [PtCl4]2– ion was reductively deposited on RuxNBP to obtain a Pt SAC (Pt1/RuxNBP). Electrochemical measurements demonstrate the excellent HER performance of Pt1/RuxNBP with a 5.7-fold increase in mass activity compared to the commercial Pt/C at 20 mV. Moreover, the cell voltage of the proton exchange membrane electrolyzer with Pt1/RuxNBP is 20 mV lower compared to that with commercial Pt/C at 1.0 A cm−2. Physical characterization and density functional theory calculations revealed that the preserved Pt–Cl bond of [PtCl4]2– and the RuxNBP support co-regulate the 5d state of isolated Pt atoms and enhance the catalytic HER capacity of Pt1/RuxNBP.</div></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"69 ","pages":"Pages 259-270"},"PeriodicalIF":15.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549188","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

Pd/Cu-cocatalyzed multi-site functionalization of in-situ generated alkenes toward carbazole-based aggregation-induced emission luminogens Pd/ cu共催化原位生成的烯烃向咔唑基聚集诱导发射发光物质的多位点功能化

IF 15.7 1区化学

Chinese Journal of Catalysis Pub Date : 2025-02-01 DOI: 10.1016/S1872-2067(24)60164-6

Meiqi Zhang , Xueyuan Yan , Zheng Liu , Hongyuan Bai , Hongwei Ma , Genping Huang , Bo Zhang , Dezhu Xu , Wenjia Han , Li Han , Tenglong Guo

{"title":"Pd/Cu-cocatalyzed multi-site functionalization of in-situ generated alkenes toward carbazole-based aggregation-induced emission luminogens","authors":"Meiqi Zhang , Xueyuan Yan , Zheng Liu , Hongyuan Bai , Hongwei Ma , Genping Huang , Bo Zhang , Dezhu Xu , Wenjia Han , Li Han , Tenglong Guo","doi":"10.1016/S1872-2067(24)60164-6","DOIUrl":"10.1016/S1872-2067(24)60164-6","url":null,"abstract":"<div><div>In contrast to the predominant mono or difunctionalization of alkenes, the multi-site functionalization of alkenes involving the synergistic formation of more than two new C–C or C–X bonds is much challenging, especially for developing new reaction pathway to afford the functional heterocycle compounds with aggregation-induced emission (AIE) property has been rarely reported. In present work, the multi-site functionalization of in situ generated alkenes with indoles has been developed for the synthesis of diversely functionalized carbazoles through the synergistic construction of multiple C–C bonds and C=O bond. A proposed reaction sequence involving C–H alkenylation/radical oxygen atom transfer/Diels-Alder cycloaddition/dehydrogenative aromatization was supported by experiments and density functional theory calculations. Further derivative carbazole-linked-quinoxaline skeletons represent a class of AIEgens with acceptor-donor-acceptor configuration, which generated the desired twisted intramolecular charge transfer (TICT) AIE properties and could be used as fluorescent probes for detecting the micrometer-sized phase separation of polymer blends. The protocol provides a concise route for the synthesis and application of carbazole-based AIE luminogens.</div></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"69 ","pages":"Pages 176-184"},"PeriodicalIF":15.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549250","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

High-density Au-OV synergistic sites boost tandem photocatalysis for CO2 hydrogenation to CH3OH 高密度Au-OV协同位点促进CO2加氢成CH3OH的串联光催化

IF 15.7 1区化学

Chinese Journal of Catalysis Pub Date : 2025-02-01 DOI: 10.1016/S1872-2067(24)60205-6

Xingjuan Li , Yuhao Guo , Qinhui Guan , Xiao Li , Lulu Zhang , Weiguang Ran , Na Li , Tingjiang Yan

{"title":"High-density Au-OV synergistic sites boost tandem photocatalysis for CO2 hydrogenation to CH3OH","authors":"Xingjuan Li , Yuhao Guo , Qinhui Guan , Xiao Li , Lulu Zhang , Weiguang Ran , Na Li , Tingjiang Yan","doi":"10.1016/S1872-2067(24)60205-6","DOIUrl":"10.1016/S1872-2067(24)60205-6","url":null,"abstract":"<div><div>The production of renewable methanol (CH3OH) via the photocatalytic hydrogenation of CO2 is an ideal method to ameliorate energy shortages and mitigate CO2 emissions: however, the highly selective synthesis of methanol at atmospheric pressure remains challenging owing to the competing reverse water-gas shift (RWGS) reaction. Herein, we present a novel approach for the synthesis of CH3OH via photocatalytic CO2 hydrogenation using a catalyst featuring highly dispersed Au nanoparticles loaded on oxygen vacancy (OV)-rich molybdenum dioxide (MoO2), resulting in a remarkable selectivity of 43.78%. The active sites in the Au/MoO2 catalyst are high-density Au-oxygen vacancies, which synergistically promote the tandem methanol synthesis via an initial RWGS reaction and subsequent CO hydrogenation. This work provides comprehensive insights into the design of metal-vacancy synergistic sites for the highly selective photocatalytic hydrogenation of CO2 to CH3OH.</div></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"69 ","pages":"Pages 303-314"},"PeriodicalIF":15.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549192","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

Size-dependent strong metal-support interaction modulation of Pt/CoFe2O4 catalysts Pt/CoFe2O4催化剂的尺寸依赖性强金属负载相互作用调制

IF 15.7 1区化学

Chinese Journal of Catalysis Pub Date : 2025-02-01 DOI: 10.1016/S1872-2067(24)60208-1

Yangyang Li , Jingyi Yang , Botao Qiao , Tao Zhang

{"title":"Size-dependent strong metal-support interaction modulation of Pt/CoFe2O4 catalysts","authors":"Yangyang Li , Jingyi Yang , Botao Qiao , Tao Zhang","doi":"10.1016/S1872-2067(24)60208-1","DOIUrl":"10.1016/S1872-2067(24)60208-1","url":null,"abstract":"<div><div>Supported metal catalysts are the backbone of heterogeneous catalysis, playing a crucial role in the modern chemical industry. Metal-support interactions (MSIs) are known important in determining the catalytic performance of supported metal catalysts. This is particularly true for single-atom catalysts (SACs) and pseudo-single-atom catalysts (pseudo-SACs), where all metal atoms are dispersed on, and interact directly with the support. Consequently, the MSI of SACs and pseudo-SACs are theoretically more sensitive to modulation compared to that of traditional nanoparticle catalysts. In this work, we experimentally demonstrated this hypothesis by an observed size-dependent MSI modulation. We fabricated CoFe2O4 supported Pt pseudo-SACs and nanoparticle catalysts, followed by a straightforward water treatment process. It was found that the covalent strong metal-support interaction (CMSI) in pseudo-SACs can be weakened, leading to a significant activity improvement in methane combustion reaction. This finding aligns with our recent observation of CoFe2O4 supported Pt SACs. By contrast, the MSI in Pt nanoparticle catalyst was barely affected by the water treatment, giving rise to almost unchanged catalytic performance. This work highlights the critical role of metal size in determining the MSI modulation, offering a novel strategy for tuning the catalytic performance of SACs and pseudo-SACs by fine-tuning their MSIs.</div></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"69 ","pages":"Pages 292-302"},"PeriodicalIF":15.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549191","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