Catalysis Science & Technology最新文献

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Self-assembly of Sb2S3 NRs-M (M = Au, Ag, Pd) heterostructures towards boosted photocatalysis† Sb2S3 NRs-M (M = Au, Ag, Pd)异质结构自组装促进光催化†
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-06-05 DOI: 10.1039/D5CY00538H
Huawei Xie, Bei-Bei Zhang and Fang-Xing Xiao
{"title":"Self-assembly of Sb2S3 NRs-M (M = Au, Ag, Pd) heterostructures towards boosted photocatalysis†","authors":"Huawei Xie, Bei-Bei Zhang and Fang-Xing Xiao","doi":"10.1039/D5CY00538H","DOIUrl":"https://doi.org/10.1039/D5CY00538H","url":null,"abstract":"<p >Antimony sulfide (Sb<small><sub>2</sub></small>S<small><sub>3</sub></small>) has been deemed a promising semiconductor for solar energy conversion owing to its suitable energy level position. However, so far, Sb<small><sub>2</sub></small>S<small><sub>3</sub></small>-based photocatalytic systems have been poorly reported, making Sb<small><sub>2</sub></small>S<small><sub>3</sub></small>-dominated photocatalytic mechanisms elusive. Herein, an efficient electrostatic self-assembly strategy was developed to fabricate metal nanocrystal (NC)-functionalized Sb<small><sub>2</sub></small>S<small><sub>3</sub></small> nanorod (Sb<small><sub>2</sub></small>S<small><sub>3</sub></small> NRs-M, M = Au, Ag, Pd) heterostructures. The tartaric acid (TA) molecules grafted on the Sb<small><sub>2</sub></small>S<small><sub>3</sub></small> NR surface served as coordination sites, which enabled the self-assembly of the metal precursor on the Sb<small><sub>2</sub></small>S<small><sub>3</sub></small> NR surface <em>via</em> electrostatic and coordinate interactions. The as-prepared Sb<small><sub>2</sub></small>S<small><sub>3</sub></small> NRs-M (M = Au, Ag, Pd) heterostructures demonstrated significantly enhanced photoactivities toward the mineralization of organic pollutants under visible light irradiation, surpassing those of the pristine Sb<small><sub>2</sub></small>S<small><sub>3</sub></small> NR counterpart. The contributing role of metal NCs as “electron reservoirs” in boosting the charge separation was determined. Furthermore, active species participating in the photocatalytic reaction were determined, and the photocatalytic mechanism was unveiled. This study offers an efficacious strategy for the rational construction of metal NC-functionalized Sb<small><sub>2</sub></small>S<small><sub>3</sub></small> NRs for widespread photocatalytic applications.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 15","pages":" 4515-4527"},"PeriodicalIF":4.4,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714616","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
The critical role of boron hybridization (sp3vs. sp2vs. sp) in hydrogenation mechanisms by boron-based Ru catalysts† 硼杂化(sp3vs)的关键作用。sp2vs。sp)对硼基Ru催化剂加氢机理的研究†
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-06-05 DOI: 10.1039/D5CY00380F
Chuanyi Xiong, Huayu Liang, Yinwu Li and Zhuofeng Ke
{"title":"The critical role of boron hybridization (sp3vs. sp2vs. sp) in hydrogenation mechanisms by boron-based Ru catalysts†","authors":"Chuanyi Xiong, Huayu Liang, Yinwu Li and Zhuofeng Ke","doi":"10.1039/D5CY00380F","DOIUrl":"https://doi.org/10.1039/D5CY00380F","url":null,"abstract":"<p >Boron–transition metal (B–TM) catalysts have emerged as promising systems for hydrogenation reactions due to their unique bifunctional reactivity. However, the electronic structure–activity relationships of B–TM systems with different boron hybridizations remain poorly understood. This study systematically investigates how the sp<small><sup>3</sup></small>, sp<small><sup>2</sup></small>, and sp hybridizations influence the catalytic mechanisms of B–Ru complexes in hydrogen activation and ethylene hydrogenation. For hydrogen activation, the sp<small><sup>3</sup></small>-B–Ru system follows a hydride mechanism (Δ<em>G</em> = 31.2 kcal mol<small><sup>−1</sup></small>), while sp<small><sup>2</sup></small>/sp-B–Ru systems adopt a more efficient proton mechanism with lower barriers (15.3 and 20.8 kcal mol<small><sup>−1</sup></small>, respectively). Orbital analysis demonstrates that the Ru contribution to bridging hydrides increases progressively from sp<small><sup>3</sup></small> (9.4%) to sp (13.9%) systems, correlating with enhanced catalytic activity. For the hydrogenation reaction, the 2c–2e terminal is more favorable than the 3c–2e bridging hydrogen mechanism. Moreover, in the bridging hydrogen mechanism, the metal oxidation state remains unchanged for the sp<small><sup>2</sup></small> and the sp systems, which is superior to that for the sp<small><sup>3</sup></small> system. These findings provide molecular-level insights for the rational design of B–TM catalysts with improved hydrogenation performance.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 13","pages":" 3906-3917"},"PeriodicalIF":4.4,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144514483","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
Enhancing the local electron density at active sites to promote the selective conversion of CO2 into C2H6† 提高活性位点的局部电子密度,促进CO2选择性转化为C2H6†
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-06-04 DOI: 10.1039/D5CY00492F
Xinying Chen, Xinxin Jiang, Minlei Zhang, Tingyu Yang, Pengken Li, Jingran Yi, Yuming Dong and Yongfa Zhu
{"title":"Enhancing the local electron density at active sites to promote the selective conversion of CO2 into C2H6†","authors":"Xinying Chen, Xinxin Jiang, Minlei Zhang, Tingyu Yang, Pengken Li, Jingran Yi, Yuming Dong and Yongfa Zhu","doi":"10.1039/D5CY00492F","DOIUrl":"https://doi.org/10.1039/D5CY00492F","url":null,"abstract":"<p >Metal–covalent organic frameworks (M-COFs) have exhibited great potential in photocatalytic CO<small><sub>2</sub></small> reduction. However, challenges persist in generating C<small><sub>2</sub></small> products and their low selectivity. Here, we incorporated electron-rich and conjugated benzotrithiophene (BTT) into aldehyde monomers to synthesize a hydrazone-linked COF. Copper (Cu) atoms coordinate with the hydrazone bonds, forming Cu sites with high charge density. Notably, the high charge density at the Cu sites not only facilitates CO<small><sub>2</sub></small> activation but also creates a suitable microenvironment for the stability of *CO intermediates, thereby increasing their concentration and enhancing C–C coupling. As a result, Cu@BTT-DMTH-COF exhibits a C<small><sub>2</sub></small>H<small><sub>6</sub></small> evolution rate of 34.5 μmol g<small><sup>−1</sup></small> h<small><sup>−1</sup></small> with a selectivity of 72.5%, and its C<small><sub>2</sub></small>H<small><sub>6</sub></small> electron selectivity is 1.72 times higher than that of a hydrazone-linked metal COF composed of pyrene units. In summary, this work serves as an ideal model for achieving photocatalytic conversion of CO<small><sub>2</sub></small> into ethane using metal-based COF materials.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 15","pages":" 4462-4470"},"PeriodicalIF":4.4,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714604","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
Regulating protonation paths for enhanced photocatalytic CO2 methanation by coupling Pt sites on WO2.9/TiO2† 通过偶联WO2.9/TiO2†上的Pt位点调节光催化CO2甲烷化的质子化路径
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-06-04 DOI: 10.1039/D5CY00167F
Jiajun Du, Jun Deng, ChangAn Zhou, Hairong Yue, Chong Liu, Patrik Schmuki, Štěpán Kment and Xuemei Zhou
{"title":"Regulating protonation paths for enhanced photocatalytic CO2 methanation by coupling Pt sites on WO2.9/TiO2†","authors":"Jiajun Du, Jun Deng, ChangAn Zhou, Hairong Yue, Chong Liu, Patrik Schmuki, Štěpán Kment and Xuemei Zhou","doi":"10.1039/D5CY00167F","DOIUrl":"https://doi.org/10.1039/D5CY00167F","url":null,"abstract":"<p >CO<small><sub>2</sub></small> methanation <em>via</em> photocatalysis with water vapor is a sustainable technique for reducing CO<small><sub>2</sub></small> emission but is challenged by the high energy barrier associated with the initial adsorption, activation and protonation of CO<small><sub>2</sub></small> molecules. In this work, a substoichiometric WO<small><sub>2.9</sub></small> thin film with strong Lewis acidity was coated on TiO<small><sub>2</sub></small> microspheres, followed by the deposition of Pt cocatalysts on WO<small><sub>2.9</sub></small> with controlled Pt single atoms and clusters (Pt–WO<small><sub>2.9</sub></small>/TiO<small><sub>2</sub></small>). The methane production rate reached 10.74 μmol h<small><sup>−1</sup></small> g<small><sup>−1</sup></small> with a selectivity of 99.8%, which was ∼40 times higher than that of bare TiO<small><sub>2</sub></small> (0.27 μmol h<small><sup>−1</sup></small> g<small><sup>−1</sup></small>). The high methane production rate was attributed to the synergy of Pt sites on the WO<small><sub>2.9</sub></small>/TiO<small><sub>2</sub></small> heterojunction, where the Pt clusters facilitated water dissociation, thereby providing H* through hydrogen spillover on the surface, and the presence of a substoichiometric WO<small><sub>2.9</sub></small> surface further enhanced the spillover process. The high density of active H* promoted the protonation pathway for CO<small><sub>2</sub></small> activation (CO<small><sub>2</sub></small> → COOH<small><sup>+</sup></small> → *COOH), which improved the adsorption of the essential intermediate *CO on Pt single atoms and displayed a significantly reduced energy barrier for the protonation reaction of C1 intermediates, resulting in a mixed reaction pathway. This work provides new insights into a mechanism to regulate the reaction path to facilitate efficient photocatalytic CO<small><sub>2</sub></small> methanation.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 13","pages":" 4002-4011"},"PeriodicalIF":4.4,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144514485","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
A meta-analysis approach to reveal the consensual points in the development of materials for photocatalytic methane reform to methanol† 一种荟萃分析方法揭示了光催化甲烷转化为甲醇†的材料开发中的共识点
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-06-04 DOI: 10.1039/D5CY00349K
Ricardo Marques e Silva, Eduardo Henrique Dias, Marcos Augusto Ribeiro da Silva, Milene Corso Mitsuyuki, Jessica Ariane de Oliveira, Gelson Tiago dos Santos Tavares da Silva, Jean Castro da Cruz and Caue Ribeiro
{"title":"A meta-analysis approach to reveal the consensual points in the development of materials for photocatalytic methane reform to methanol†","authors":"Ricardo Marques e Silva, Eduardo Henrique Dias, Marcos Augusto Ribeiro da Silva, Milene Corso Mitsuyuki, Jessica Ariane de Oliveira, Gelson Tiago dos Santos Tavares da Silva, Jean Castro da Cruz and Caue Ribeiro","doi":"10.1039/D5CY00349K","DOIUrl":"https://doi.org/10.1039/D5CY00349K","url":null,"abstract":"<p >Significant methane reserves remain underutilized due to the challenges posed by the transition to a decarbonized economy. Consequently, methane combustion should be replaced by pathways that directly convert methane into high-value-added chemicals, aiming to achieve net-zero emissions. This represents a challenge in the current state of the art—particularly in photocatalytic materials, which can harness direct sunlight as an energy source. However, research lacks a consistent roadmap, which is essential to establish a consensus in the literature by statistically identifying promising catalytic materials and reaction pathways. To address this, we propose a meta-analytical study based on a systematic collection of relevant data from the literature to uncover consensus points in photocatalytic research focused on methane conversion to chemicals. The findings highlight challenges arising from the lack of standardization in reporting results and experimental conditions, which hinder proper comparisons between studies. Ultimately, the authors advocate for an in-depth discussion on the standardization of research methodologies, emphasizing the necessity of adhering to uniform protocols in experimental procedures and data reporting to ensure the reliability and comparability of results.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 15","pages":" 4501-4514"},"PeriodicalIF":4.4,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714556","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
Hierarchical construction of Co nanoparticles embedded in an N doped carbon nanotube/porous nanosheet electrocatalyst for Zn–air batteries† 氮掺杂碳纳米管/多孔纳米片电催化剂中Co纳米颗粒的层次化结构[j]
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-06-03 DOI: 10.1039/D5CY00483G
Weiguang Fang, Jun Zhu, Shan Gao, Juanjuan Zhao, Na Li, Shoujie Liu and Mingzai Wu
{"title":"Hierarchical construction of Co nanoparticles embedded in an N doped carbon nanotube/porous nanosheet electrocatalyst for Zn–air batteries†","authors":"Weiguang Fang, Jun Zhu, Shan Gao, Juanjuan Zhao, Na Li, Shoujie Liu and Mingzai Wu","doi":"10.1039/D5CY00483G","DOIUrl":"https://doi.org/10.1039/D5CY00483G","url":null,"abstract":"<p >Inefficient cathodic reactions severely limit the practical performance of rechargeable zinc–air batteries (RZABs) and become a fundamental bottleneck in their development. The exploitation of cost-effective cathode electrocatalysts is significant for addressing this issue. Herein, we demonstrate a facile programmed annealing strategy to fabricate an efficient electrocatalyst with a structure of Co nanoparticles embedded in N doped carbon nanotubes/porous nanosheets (Co@DUGC). Benefiting from the <em>in situ</em> wrapped Co nanoparticles and doped N as catalytic and adsorptive sites, and a hierarchical carbon nanotube/porous nanosheet architecture for fast electron transfer and mass diffusion, the fabricated Co@DUGC exhibits excellent bifunctional electrocatalytic performance with a positive half-wave potential of 0.87 V in the ORR and a low overpotential of 414 mV in the OER. As a cathodic catalyst, Co@DUGC endows a home-made liquid RZAB with a high peak power density of 150 mW cm<small><sup>−2</sup></small>, a large specific discharge capacity of 816.9 mA h g<small><sub>Zn</sub></small><small><sup>−1</sup></small> and a durable rechargeability of 314 cycles. Meanwhile, a button RZAB based on Co@DUGC displays a peak power density of 85.3 mW cm<small><sup>−2</sup></small>, a specific discharge capacity of 643.7 mA h g<small><sub>Zn</sub></small><small><sup>−1</sup></small> and a charge–discharge cycle life over 95 times, revealing its reliability for portable applications. This work demonstrates a convenient and rational design of transition metal decorated carbon electrocatalysts for high-performance RZABs.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 14","pages":" 4291-4302"},"PeriodicalIF":4.4,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144624121","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
Modulating the alkalinity of molten chloride salt with proton sources for ammonia synthesis† 用质子源调节氨合成中熔融氯盐的碱度
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-06-03 DOI: 10.1039/D5CY00496A
Bingxu Xi, Jian Liu, Bo Yang and Xiaofei Guan
{"title":"Modulating the alkalinity of molten chloride salt with proton sources for ammonia synthesis†","authors":"Bingxu Xi, Jian Liu, Bo Yang and Xiaofei Guan","doi":"10.1039/D5CY00496A","DOIUrl":"https://doi.org/10.1039/D5CY00496A","url":null,"abstract":"<p >Ammonia is not only a crucial chemical feedstock for the production of nitrogen fertilizers but also a promising hydrogen energy carrier. In recent years, molten salts have emerged as promising materials for applications in ammonia synthesis. However, a common issue is the limited release of ammonia from the molten salts due to the absorption by nitride ions (N<small><sup>3−</sup></small>) and hydride ions (H<small><sup>−</sup></small>). Herein, we present a study on the ammonia release from molten LiCl–KCl salt by introducing different proton sources, among which the acidic HCl gas effectively reacts with the alkaline nitride ions and hydride ions and thereby facilitates the ammonia release. Based on that, we have designed and tested a three-step method for ammonia synthesis comprising molten salt electrolysis, Li nitridation, and HCl addition. A synthetic efficiency of 87.21% has been achieved considering both ammonia and ammonium chloride as the products after an experiment involving 1 h of molten salt electrolysis at 1.5 A current and HCl as the proton source. This work not only unveils the interplay between the proton sources and the alkaline species in the molten salt but also presents a promising stepwise method for enhancing ammonia and ammonium chloride synthesis in molten salt systems at ambient pressure.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 15","pages":" 4406-4418"},"PeriodicalIF":4.4,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714598","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
Enhanced electrocatalytic hydrogenation of levulinic acid to value-added chemical platforms† 乙酰丙酸电催化加氢制备高附加值化工平台的研究
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-06-02 DOI: 10.1039/D5CY00319A
Pol Vilariño, Elvira Gómez and Albert Serrà
{"title":"Enhanced electrocatalytic hydrogenation of levulinic acid to value-added chemical platforms†","authors":"Pol Vilariño, Elvira Gómez and Albert Serrà","doi":"10.1039/D5CY00319A","DOIUrl":"https://doi.org/10.1039/D5CY00319A","url":null,"abstract":"<p >The electrocatalytic hydrogenation (ECH) of levulinic acid (LA) has been identified as a sustainable and energy-efficient route for the production of high-value chemicals, including γ-valerolactone (GVL) and valeric acid (VA). This study explores the electrochemical reduction of LA using electrodeposited Cu-, Ni-, and Ru-based catalysts, including their binary (CuNi, CuRu, NiRu) and ternary (CuNiRu) systems, under both acidic and alkaline conditions. Catalysts were prepared by electrodeposition from new developed formulations. Among the electrocatalysts studied, Ni-rich deposits exhibited superior performance, with CuNi and CuNiRu catalysts achieving faradaic efficiencies above 80%, LA conversion rates exceeding 85%, and GVL selectivity as high as 94% in acidic media. Electrochemical analyses revealed that the reaction pathway and product distribution were strongly influenced by catalyst composition and solution pH, with acidic conditions favouring higher conversion efficiencies and selectivity toward GVL. Conversely, alkaline media gave rise to diminished reaction rates and a shift toward VA production. In acidic medium, reusability tests assessed the long-term stability of CuNi-based catalysts, with moderate performance degradation over multiple cycles and negligible catalyst leaching. A comparative analysis with state-of-the-art electrocatalysts highlights the competitive advantages of the developed materials, particularly in terms of efficiency and selectivity. The findings emphasise the potential of electrodeposited Ni-rich deposits for scalable, cost-effective, and environmentally friendly biomass conversion, advancing the prospects of electrochemical LA valorisation as a viable alternative to conventional hydrogenation methods.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 14","pages":" 4223-4237"},"PeriodicalIF":4.4,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/cy/d5cy00319a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144624114","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
Enhancing CO2 hydrogenation via nitrogen-doped carbon nanospheres and in situ ruthenium nanoparticle synthesis† 通过氮掺杂碳纳米球和原位合成纳米钌增强CO2加氢作用
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-06-02 DOI: 10.1039/D5CY00368G
Pradeep S. Murthy, Oliver J. Conquest, Lizhuo Wang, Xiaoyan Liu, Jian Liu, Catherine Stampfl and Jun Huang
{"title":"Enhancing CO2 hydrogenation via nitrogen-doped carbon nanospheres and in situ ruthenium nanoparticle synthesis†","authors":"Pradeep S. Murthy, Oliver J. Conquest, Lizhuo Wang, Xiaoyan Liu, Jian Liu, Catherine Stampfl and Jun Huang","doi":"10.1039/D5CY00368G","DOIUrl":"https://doi.org/10.1039/D5CY00368G","url":null,"abstract":"<p >As the excessive presence of CO<small><sub>2</sub></small> continues to infiltrate the Earth's atmosphere, a crucial mitigation strategy is not merely capturing CO<small><sub>2</sub></small> but converting it into more useful fuels and chemicals, such as CO and CH<small><sub>4</sub></small>, through CO<small><sub>2</sub></small> hydrogenation. This process is easily accelerated using a catalyst. A Ru/CNS nano-catalyst was studied, in which 1 wt% of ruthenium metal nanoparticles were dispersed over nitrogen-doped carbon nanospheres (CNSs) derived from resorcinol (Res) or 3-aminophenol (APF) and synthesized with or without a direct <em>in situ</em> mixing method. The generated C–N surface of the Ru/CNS-APF (<em>in situ</em>) catalyst not only possessed smaller, embedded, and well-dispersed Ru nanoparticles (2.38 nm), but also had a strong synergistic effect with the Ru species. The characterization and reaction test results indeed evidenced that this catalyst possessed the strongest activity (∼60% CO<small><sub>2</sub></small> conversion and ∼85% CO selectivity at 600 °C and 3H<small><sub>2</sub></small> : 1CO<small><sub>2</sub></small> molar feed ratio). A 10 h stability test effectively demonstrated that the catalyst maintained its active and stable performance, with no major structural changes post-reaction. A density functional theory (DFT) model comprising a Ru nanostructure adsorbed on a C–N layer (graphene with substituted pyridinic-N) demonstrated easier CO<small><sub>2</sub></small> capture on C–N before subsequent diffusion onto Ru. A strong electronic and material synergy between Ru and C–N was verified, and the preferred reaction intermediate was <em>trans</em>-COOH. The analysis proved both that a nitrogen-doped carbon nanosphere (CNS) support synthesized <em>via in situ</em> Ru incorporation enhances CO<small><sub>2</sub></small> hydrogenation efficiency and that such Ru/C–N-based catalysts are highly capable towards addressing the global climate challenge.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 13","pages":" 3976-3990"},"PeriodicalIF":4.4,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144514472","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
Minimizing radiative and nonradiative energy leakage in red-light-absorbing supramolecular nanoassemblies to boost oxidative photocatalytic activity in water† 减少红光吸收超分子纳米组件的辐射和非辐射能量泄漏以提高水的氧化光催化活性
IF 4.4 3区 化学
Catalysis Science & Technology Pub Date : 2025-06-02 DOI: 10.1039/D5CY00131E
Aditya Singh, Manoj Kumar and Vandana Bhalla
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