Catalysis Science & Technology最新文献

筛选
英文 中文
Construction of a 0D/2D NixP/LaTiO2N Schottky junction photocatalyst for efficient visible-light-driven photocatalytic CO2 reduction†
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-02-14 DOI: 10.1039/D5CY00004A
Guoyu Xu, Yanan Chen, Peiling Lin, Zizhong Zhang, Tao Ji and Wenyue Su
{"title":"Construction of a 0D/2D NixP/LaTiO2N Schottky junction photocatalyst for efficient visible-light-driven photocatalytic CO2 reduction†","authors":"Guoyu Xu, Yanan Chen, Peiling Lin, Zizhong Zhang, Tao Ji and Wenyue Su","doi":"10.1039/D5CY00004A","DOIUrl":"https://doi.org/10.1039/D5CY00004A","url":null,"abstract":"<p >Employing photocatalytic technology to transform CO<small><sub>2</sub></small> into valuable fuels is considered a promising solution for addressing the exacerbated greenhouse effect and energy crisis. The development of photocatalysts featuring superior charge separation efficiency is pivotal for the widespread implementation of photocatalytic CO<small><sub>2</sub></small> reduction technologies. Herein, zero-dimensional (0D) Ni<small><sub><em>x</em></sub></small>P nanoparticles are anchored onto two-dimensional (2D) LaTiO<small><sub>2</sub></small>N nanosheets by a photo-deposition method, and a Ni<small><sub><em>x</em></sub></small>P/LaTiO<small><sub>2</sub></small>N Schottky junction composite with excellent photocatalytic CO<small><sub>2</sub></small> reduction performance is constructed. The optimal Ni<small><sub><em>x</em></sub></small>P/LaTiO<small><sub>2</sub></small>N composite achieves CO and CH<small><sub>4</sub></small> yields of 9.39 and 4.15 μmol g<small><sup>−1</sup></small> h<small><sup>−1</sup></small>, respectively, with the utilized photoelectron number (UPN) reaching 51.98 μmol g<small><sup>−1</sup></small>, which is approximately 9.7 times higher than that of LaTiO<small><sub>2</sub></small>N alone. The improved photocatalytic performance of the composites can be attributed to the formation of Schottky junctions, which effectively suppress the recombination of photogenerated carriers. This study provides a new idea for the development of 0D/2D Schottky junction photocatalysts.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 6","pages":" 2027-2033"},"PeriodicalIF":4.4,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Formation of HCHO, CO and H2 by methane oxidation with O2 over Cu catalysts stabilized in silicoaluminophosphates†
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-02-13 DOI: 10.1039/D4CY01469C
Mana Shimakawa, Rieko Nagase, Ryoya Kugo, Junya Ohyama and Sakae Takenaka
{"title":"Formation of HCHO, CO and H2 by methane oxidation with O2 over Cu catalysts stabilized in silicoaluminophosphates†","authors":"Mana Shimakawa, Rieko Nagase, Ryoya Kugo, Junya Ohyama and Sakae Takenaka","doi":"10.1039/D4CY01469C","DOIUrl":"https://doi.org/10.1039/D4CY01469C","url":null,"abstract":"<p >The catalytic performance of Cu catalysts supported on SAPO34 (denoted as Cu/SAPO) for methane oxidation with O<small><sub>2</sub></small> has been investigated in detail. Cu/SAPO catalysts formed H<small><sub>2</sub></small> in addition to CO and HCHO during methane oxidation in the temperature range from 773 and 923 K, while the other 3d transition metal catalysts such as V, Cr, Mn, Fe, Co and Ni were less active for the formation of these products. The formation of HCHO, H<small><sub>2</sub></small> and CO was also confirmed during the reaction over Cu catalysts supported on zeolites different from SAPO34, such as mordenite, faujasite, chabazite, and beta-zeolite, but the yields of these products, especially the H<small><sub>2</sub></small> yield in the reaction over the Cu/SAPO catalyst, were significantly higher than those over other zeolite-supported Cu catalysts. In the oxidation over Cu/SAPO catalysts at 923 K, the yields of H<small><sub>2</sub></small>, CO, and HCHO reached 2.2, 5.4, and 0.7%, respectively, at a methane conversion of 8.2%. These Cu catalysts were characterized by XRD patterns and <em>in situ</em> UV-vis spectra. Highly dispersed Cu<small><sup>2+</sup></small> species stabilized in SAPO34 were the active sites for methane oxidation, which were reduced to Cu<small><sup>+</sup></small> species by methane and oxidized to Cu<small><sup>2+</sup></small> by O<small><sub>2</sub></small> to facilitate the reaction.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 6","pages":" 1998-2007"},"PeriodicalIF":4.4,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/cy/d4cy01469c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Highly efficient supported catalysts based on Zr-containing polyoxometalates and multiwalled carbon nanotubes for selective oxidation of thioethers with H2O2†
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-02-07 DOI: 10.1039/D4CY01526F
Vladimir A. Lopatkin, Vasilii Yu. Evtushok, Olga A. Stonkus, Lidiya S. Kibis, Olga Yu. Podyacheva and Oxana A. Kholdeeva
{"title":"Highly efficient supported catalysts based on Zr-containing polyoxometalates and multiwalled carbon nanotubes for selective oxidation of thioethers with H2O2†","authors":"Vladimir A. Lopatkin, Vasilii Yu. Evtushok, Olga A. Stonkus, Lidiya S. Kibis, Olga Yu. Podyacheva and Oxana A. Kholdeeva","doi":"10.1039/D4CY01526F","DOIUrl":"https://doi.org/10.1039/D4CY01526F","url":null,"abstract":"<p >Zirconium-containing polyoxometalates (Zr–POM) with Lindqvist, Keggin, and Wells–Dawson structures have been irreversibly attached to the surface of nitrogen-free and nitrogen-doped multi-walled carbon nanotubes (CNT and N-CNT) using H<small><sup>+</sup></small> or Zn<small><sup>2+</sup></small> ions as immobilization agents. The supported catalysts were characterized using low temperature N<small><sub>2</sub></small> adsorption, thermogravimetric analysis, FT-IR spectroscopy, XPS, HRTEM and HAADF-STEM. Catalytic activity was assessed for the selective oxidation of thioethers to sulfoxides using methyl phenyl sulfide as model substrate and aqueous 30% H<small><sub>2</sub></small>O<small><sub>2</sub></small> as green oxidant, and the relationships between the catalyst composition and its activity and selectivity have been established. Among the catalysts tested, Zr–POM of the Keggin structure [{PW<small><sub>11</sub></small>O<small><sub>39</sub></small>Zr(μ-OH)}<small><sub>2</sub></small>]<small><sup>8−</sup></small> (PW<small><sub>11</sub></small>Zr) immobilized on N-CNT (1.8 at% N) using Zn<small><sup>2+</sup></small> (18 wt% PW<small><sub>11</sub></small>Zr/Zn–N-CNT) exhibited superior performance in terms of turnover frequency (TOF 10 200 h<small><sup>−1</sup></small> in acetonitrile at room temperature) and H<small><sub>2</sub></small>O<small><sub>2</sub></small> utilization efficiency (90%). Sulfoxide selectivity depends on the solvent nature and varies from 88% (acetonitrile) to 98% (ethanol) at 80–83% substrate conversion attained with only one equiv. of H<small><sub>2</sub></small>O<small><sub>2</sub></small> and 0.1 mol% of PW<small><sub>11</sub></small>Zr. The reaction can proceed successfully even with 0.01 mol% of the catalyst, achieving turnover number of 9360 with retention of the Zr–POM structure. Hot filtration tests confirmed the heterogeneous nature of the catalysis. The catalyst showed excellent reusability over, at least, five cycles without degradation and was resistant to Zr–POM and Zn leaching, even when using the highly polar protic solvent ethanol. The catalyst 18 wt% PW<small><sub>11</sub></small>Zr/Zn–N-CNT was able to accomplish sulfoxidation of the practically important omeprazole sulfide with 98% selectivity at 95% conversion.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 6","pages":" 1825-1838"},"PeriodicalIF":4.4,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Polystyrene-bound AlCl3 – a catalyst for the solvent-free synthesis of aryl-substituted tetrazoles† 聚苯乙烯结合 AlCl3--一种无溶剂合成芳基取代四唑的催化剂。
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-02-07 DOI: 10.1039/D4CY01215A
Max Schmallegger, Mathias Wiech, Sebastian Soritz, Miriam de J. Velásquez-Hernández, Brigitte Bitschnau, Heidrun Gruber-Woelfler and Georg Gescheidt
{"title":"Polystyrene-bound AlCl3 – a catalyst for the solvent-free synthesis of aryl-substituted tetrazoles†","authors":"Max Schmallegger, Mathias Wiech, Sebastian Soritz, Miriam de J. Velásquez-Hernández, Brigitte Bitschnau, Heidrun Gruber-Woelfler and Georg Gescheidt","doi":"10.1039/D4CY01215A","DOIUrl":"10.1039/D4CY01215A","url":null,"abstract":"<p >Tetrazole moieties are components of various pharmacologically active molecules. Several synthetic protocols for the synthesis of tetrazoles have been developed. Among those, the reaction of organic nitriles with azides catalyzed by Lewis acids (LAs) provides a convenient access. Nevertheless, generally rather harsh reaction conditions have to be utilized for such syntheses. We have developed a simple, solvent-free procedure which allows a convenient isolation of tetrazoles using a heterogeneous catalyst: we show that polystyrene/AlCl<small><sub>3</sub></small> composites produce tetrazoles at reasonable yields and allow a simple work-up procedure. We have characterized the AlCl<small><sub>3</sub></small>/polystyrene composite (gas sorption, XRD, IR) and investigated its efficacy in the preparation of aryl-substituted tetrazoles. We also have evaluated MgCl<small><sub>2</sub></small>, CuCl<small><sub>2</sub></small>, and ZnCl<small><sub>2</sub></small> as Lewis-acid catalysts, but they are clearly outperformed by AlCl<small><sub>3</sub></small> correlating with the Lewis-acid strength on the Gutmann-Beckett scale.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 6","pages":" 1983-1988"},"PeriodicalIF":4.4,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11815551/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Toward decorrelation of surface oxygen groups from metal dispersion effects in Pd/C hydrogenation catalysts†
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-02-06 DOI: 10.1039/D4CY01562B
Edgardo A. Leal Villarroel, Cécile Marcelot, Cecilia C. Torres, Katerina Soulantica, Cristian H. Campos and Philippe Serp
{"title":"Toward decorrelation of surface oxygen groups from metal dispersion effects in Pd/C hydrogenation catalysts†","authors":"Edgardo A. Leal Villarroel, Cécile Marcelot, Cecilia C. Torres, Katerina Soulantica, Cristian H. Campos and Philippe Serp","doi":"10.1039/D4CY01562B","DOIUrl":"https://doi.org/10.1039/D4CY01562B","url":null,"abstract":"<p >Carbon-supported Pd-based catalysts have found wide applications in hydrogenation of specific functional groups. Surface modification of the support, <em>via</em> the introduction of oxygen functional groups, modulates the metal dispersion and the interaction of reactant(s) with the catalyst surface, consequently tuning its catalytic properties. However, it is difficult to decorrelate the effect of surface oxygen groups from that of the dispersion of the metallic phase. This study aims at decorrelating these effects on the catalytic performance for phenylacetylene hydrogenation by using preformed monodispersed Pd nanoparticles deposited on carbon supports presenting different densities of surface oxygen groups. X-ray photoelectron spectroscopy, temperature-programmed decomposition experiments and transmission electron microscopy were used to analyze the dispersion and oxidation state of Pd and the concentration of surface oxygen groups. The results reveal that such decorrelation is not an easy task, particularly since spillover of the nanoparticles' native capping ligand (oleylamine) occurs during Pd particle deposition. This phenomenon, which depends on the density of oxygen functional groups and the size of Pd particles, impacts the Pd<small><sup>(0)</sup></small>/Pd<small><sup>2+</sup></small> ratio and the surface Pd/N atomic ratio. These two last parameters, which seem to be interconnected, significantly impact the catalytic performance.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 6","pages":" 2034-2048"},"PeriodicalIF":4.4,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/cy/d4cy01562b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Deciphering the role of (metal–)support on the reductive amination of levulinates
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-02-05 DOI: 10.1039/D4CY01467G
Kanika Saini, Neeraj Sharma, Rahul Gautam, Supan, Christophe Len and Shunmugavel Saravanamurugan
{"title":"Deciphering the role of (metal–)support on the reductive amination of levulinates","authors":"Kanika Saini, Neeraj Sharma, Rahul Gautam, Supan, Christophe Len and Shunmugavel Saravanamurugan","doi":"10.1039/D4CY01467G","DOIUrl":"https://doi.org/10.1039/D4CY01467G","url":null,"abstract":"<p >Biomass-derived levulinic acid (LevuA) and its esters are key intermediates for producing high-value pyrrolidones, such as <em>N</em>-substituted-5-methyl-2-pyrrolidones (NSMPs), through reductive amination. These compounds have promising applications in industries ranging from petrochemicals and polymers to pharmaceuticals, agrochemicals, and textiles. Significant research has focused on developing catalytic systems using both precious (<em>e.g.</em>, Pt, Pd and Rh) and non-precious metals, which are highly active due to their efficient H<small><sub>2</sub></small> activation and intermediate activation properties. However, the catalytic performance of these metals can vary significantly depending on the nature of the support material. Understanding the behaviour of supported metal, the properties of the support, and their interaction is crucial for optimising reductive amination processes. This review examines the roles of both precious and non-precious metals in intermediate and H<small><sub>2</sub></small> activation on the catalyst surface. It also explores how the intrinsic properties of the supports – such as acidic, basic and neutral characteristics – affect catalytic performance. Key factors like the formation of frustrated Lewis pair (FLP), surface acidity, and structural features (<em>e.g.</em>, morphology, exposed facets and particle size) are discussed to comprehensively understand their influence on the catalytic process. Finally, the review concludes with an analysis of the current challenges and perspectives, highlighting the need for further development of efficient, stable, and industrially viable catalytic materials for the reductive amination of bio-based carbonyls.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 6","pages":" 1787-1801"},"PeriodicalIF":4.4,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Synthesis of photocatalyst composite films from recycled plastics via hot pressing for dye wastewater treatment†
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-02-05 DOI: 10.1039/D4CY01473A
Kui-Hao Chuang, Zhe-Ai Lin and Ming-Yen Wey
{"title":"Synthesis of photocatalyst composite films from recycled plastics via hot pressing for dye wastewater treatment†","authors":"Kui-Hao Chuang, Zhe-Ai Lin and Ming-Yen Wey","doi":"10.1039/D4CY01473A","DOIUrl":"https://doi.org/10.1039/D4CY01473A","url":null,"abstract":"<p >The design and synthesis of self-suspended photocatalyst films are vital for environmental protection and resource management. We fabricated plastic-supported Pt/N–TiO<small><sub>2</sub></small> (PNT) photocatalyst films from waste plastic <em>via</em> hot pressing. We examined the effects of hot-pressing parameters on visible-light-responsive photocatalyst films made from high-impact polystyrene (HIPS), and the influence of source (virgin <em>vs.</em> recycled) and of other waste plastics (polypropylene and polyethylene terephthalate) on the properties and photocatalytic activity of hot-pressed films. When the temperature was not high enough, the polymer did not melt completely, leading to uneven surfaces and poor photocatalyst dispersion. Excessive pressure caused overcompression, increased film hardness, and hindered photocatalyst loading. The optimal parameters for film preparation using recycled HIPS were 140 °C and 90 kg cm<small><sup>−2</sup></small>. Recycled HIPS containing hydrophilic additives exhibited better photocatalytic performance than virgin HIPS. Under optimal conditions, all three types of recycled plastic were effectively pressed into film. After 15 cycles of simulated solar irradiation, HIPS(<em>R</em>)/PNT exhibited 73.17% acid red 1 decolorization and 92.82% catalyst retention. The amorphous nature of HIPS facilitates tight photocatalyst loading, highlighting the potential of recycled HIPS as a photocatalyst carrier. We successfully developed a green waste-derived photocatalyst film preparation method for dye wastewater treatment and waste-plastic recycling.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 6","pages":" 1894-1904"},"PeriodicalIF":4.4,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Optimized Ru catalysts for the selective cleavage of CAr–OCH3 bonds in guaiacol under mild conditions†
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-02-05 DOI: 10.1039/D4CY01260G
Chuqiao Song, Wei Cheng, Xiaojie Wu, Shufang Zhao, Ying Tang, Xin Tang, Yao Xu, Lili Lin and Siyu Yao
{"title":"Optimized Ru catalysts for the selective cleavage of CAr–OCH3 bonds in guaiacol under mild conditions†","authors":"Chuqiao Song, Wei Cheng, Xiaojie Wu, Shufang Zhao, Ying Tang, Xin Tang, Yao Xu, Lili Lin and Siyu Yao","doi":"10.1039/D4CY01260G","DOIUrl":"https://doi.org/10.1039/D4CY01260G","url":null,"abstract":"<p >The one-pot hydrodeoxygenation of lignin-derived (alkyl)-guaiacols to (alkyl)-cyclohexanols with high selectivity is an attractive process for biomass conversion. However, designing catalysts that preferentially cleave etheric C<small><sub>Ar</sub></small>–O(R) bonds over hydrogenating aromatic rings under mild conditions remains a significant challenge. In this study, we explore the structure sensitivity of supported Ru catalysts with varying particle sizes (0.6–7.5 nm) and identify the optimal catalyst for selective hydrodeoxygenation. Using a catalyst with 1.5 nm Ru particles, we achieve a ∼95% yield of cyclohexanol from guaiacol under relatively mild conditions (190 °C, 5 bar H<small><sub>2</sub></small>). <em>In situ</em> DRIFTS analysis reveals that the cleavage of C<small><sub>Ar</sub></small>–OCH<small><sub>3</sub></small> bonds occurs preferentially over aromatic ring hydrogenation on the 1.5 nm Ru particles, minimizing side reactions and enhancing cyclohexanol selectivity.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 6","pages":" 1839-1849"},"PeriodicalIF":4.4,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Oxygen vacancy-engineered In2O3@carbon catalysts from steam-pyrolyzed MOFs for photothermal CO2 hydrogenation†
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-02-04 DOI: 10.1039/D4CY01515K
Xinhuilan Wang, Luis Garzon-Tovar, Alejandra Rendón-Patiño, Diego Mateo and Jorge Gascon
{"title":"Oxygen vacancy-engineered In2O3@carbon catalysts from steam-pyrolyzed MOFs for photothermal CO2 hydrogenation†","authors":"Xinhuilan Wang, Luis Garzon-Tovar, Alejandra Rendón-Patiño, Diego Mateo and Jorge Gascon","doi":"10.1039/D4CY01515K","DOIUrl":"https://doi.org/10.1039/D4CY01515K","url":null,"abstract":"<p >Photothermal CO<small><sub>2</sub></small> hydrogenation has attracted considerable attention as a promising approach to utilize carbon dioxide through the efficient conversion of solar energy into chemicals and fuels. In this study, we report a novel approach to improve the catalytic performance of indium oxide-based catalysts for the photothermal reverse water-gas shift (RWGS) reaction. Catalysts derived from the steam pyrolysis of the metal–organic framework MIL(In)-68 display a high density of oxygen vacancies and defect sites on the In<small><sub>2</sub></small>O<small><sub>3</sub></small> surface. These features significantly enhance CO<small><sub>2</sub></small> adsorption and H<small><sub>2</sub></small> dissociation ability while maintaining the porosity of the material and enhancing its photothermal properties. Among the catalysts investigated, the Rb-promoted catalyst exhibited superior activity, achieving CO production rates of 53 mmol g<small><sub>In<small><sub>2</sub></small>O<small><sub>3</sub></small></sub></small><small><sup>−1</sup></small> h<small><sup>−1</sup></small> with 100% selectivity without any external heating. Comprehensive characterization, including XPS and Raman spectroscopy, confirmed that steam-pyrolysis leads to extensive defective site formation, resulting in improved catalytic performance. These results highlight the potential of steam-pyrolyzed MOF materials as efficient and selective catalysts for photothermal CO<small><sub>2</sub></small> hydrogenation, offering a sustainable route to valuable chemical production.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 6","pages":" 1814-1824"},"PeriodicalIF":4.4,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/cy/d4cy01515k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photocatalytic norfloxacin degradation enabled by a dual S-scheme nanocellulose-based Ag2WO4/NiO/MoO3 tertiary heterojunction†
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-02-04 DOI: 10.1039/D4CY01243G
Shabnam Sambyal, Vinay Chauhan, Pooja Shandilya and Aashish Priye
{"title":"Photocatalytic norfloxacin degradation enabled by a dual S-scheme nanocellulose-based Ag2WO4/NiO/MoO3 tertiary heterojunction†","authors":"Shabnam Sambyal, Vinay Chauhan, Pooja Shandilya and Aashish Priye","doi":"10.1039/D4CY01243G","DOIUrl":"https://doi.org/10.1039/D4CY01243G","url":null,"abstract":"<p >The escalating presence of antibiotic contaminants, such as norfloxacin (NFX), in water resources poses a pressing environmental challenge, demanding the development of innovative and sustainable remediation technologies. Herein, we report the design and fabrication of a novel S-scheme heterojunction photocatalyst, comprising Ag<small><sub>2</sub></small>WO<small><sub>4</sub></small>, NiO, and MoO<small><sub>3</sub></small> nanoparticles anchored onto a nanocellulose matrix (NC–ANM), for the efficient photocatalytic degradation of NFX under visible light irradiation. Comprehensive structural, morphological, and physicochemical characterization techniques, including XRD, XPS, FTIR, FESEM, and HRTEM, corroborated the successful formation of the heterojunction and its constituent phases. Optical and electrochemical analyses, utilizing UV-vis DRS, PL, and EIS, revealed enhanced visible light absorption, efficient charge separation, and prolonged charge carrier lifetimes, key attributes underpinning the superior photocatalytic activity of the NC–ANM heterojunction. Mechanistic investigations, employing LC-MS and ESR spectroscopy, confirmed the S-scheme charge transfer pathway, leading to the generation of reactive oxygen species (˙OH and ˙O<small><sub>2</sub></small><small><sup>−</sup></small>) that efficiently degrade NFX. The heterojunction demonstrated remarkable photocatalytic performance, achieving 99.6% NFX degradation within 30 minutes under optimized conditions. This study not only showcases the potential of NC–ANM as a highly efficient and sustainable photocatalyst for wastewater treatment but also provides valuable insights into the design and engineering of advanced S-scheme heterojunctions for environmental remediation applications.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 6","pages":" 1865-1881"},"PeriodicalIF":4.4,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信