Nanoscale最新文献_第3页

Cobalt-Intercalated α-MoO3 Nanoribbons Enhance Peroxidase Mimetic Activity and Photothermal Effects for Sterilization 钴嵌层α-MoO3纳米带增强过氧化物酶模拟活性和杀菌光热效应

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-06-03 DOI: 10.1039/d5nr00921a

Jiamin Zhang, Hu Liu, Yuhui Zuo, Shiyang Lv, Yan Liu, Wenfei Lan, Tong Li, Xinyi Li, Xinsheng Wang

{"title":"Cobalt-Intercalated α-MoO3 Nanoribbons Enhance Peroxidase Mimetic Activity and Photothermal Effects for Sterilization","authors":"Jiamin Zhang, Hu Liu, Yuhui Zuo, Shiyang Lv, Yan Liu, Wenfei Lan, Tong Li, Xinyi Li, Xinsheng Wang","doi":"10.1039/d5nr00921a","DOIUrl":"https://doi.org/10.1039/d5nr00921a","url":null,"abstract":"The effectiveness of conventional antibiotics in treating bacterial infections has significantly declined due to the emergence of bacterial resistance, which poses a considerable global public health challenge. Current treatment options for bacterial infections remain limited, often leading to increased side effects and exacerbating resistance. Consequently, there is an urgent need to develop new antibacterial strategies. In this study, we designed and synthesized a novel oxygen-deficient cobalt-intercalated molybdenum trioxide layered material (Co/MoO3-x) nano-enzymes, characterized by abundant oxygen vacancies and superior peroxidase-like (POD-like) activity, as well as remarkable photodynamic and photothermal properties, when compared to pristine molybdenum trioxide (MoO3). Upon exposure to near-infrared light (808 nm), Co/MoO3-x exhibited rapid heating, which further enhanced its POD enzyme activity to decompose H2O2, producing a substantial amount of reactive oxygen species (ROS). Since ROS can cause the rupture of bacterial cell membranes, Co/MoO3-x demonstrated effective antibacterial activity against gram-negative Escherichia coli. This work provides innovative perspectives for developing photothermal nanomaterials aimed at combating drug-resistant bacteria.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"98 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144201574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lattice stability and elastic evolution of CdTe membranes fabrication using a III-V heterostructures as a substrate 以III-V异质结构为衬底制备CdTe膜的晶格稳定性和弹性演化

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-06-03 DOI: 10.1039/d4nr05029k

Wesley Fiorio Inoch, Eduarda Policarpo, Misael Cesar Isaac Muniz, Angelo Malachias, Gilberto Rodrigues-Junior, Sukarno Olavo Ferreira, Christoph Deneke, Bráulio Soares Archanjo, Erika Peixoto Pimenta Peixoto Pimenta, Luciano Moura, Eduardo Nery Duarte Araujo, Leonarde do Nascimento N. Rodrigues

{"title":"Lattice stability and elastic evolution of CdTe membranes fabrication using a III-V heterostructures as a substrate","authors":"Wesley Fiorio Inoch, Eduarda Policarpo, Misael Cesar Isaac Muniz, Angelo Malachias, Gilberto Rodrigues-Junior, Sukarno Olavo Ferreira, Christoph Deneke, Bráulio Soares Archanjo, Erika Peixoto Pimenta Peixoto Pimenta, Luciano Moura, Eduardo Nery Duarte Araujo, Leonarde do Nascimento N. Rodrigues","doi":"10.1039/d4nr05029k","DOIUrl":"https://doi.org/10.1039/d4nr05029k","url":null,"abstract":"CdTe is a key binary compound for II-VI semiconductor systems since the precise control of its growth over different semiconductor materials of different orientations provides a general roadmap for telluride compounds, ranging from optically active layers to diluted magnetic semiconductors and topological insulators. The precise understanding of its epitaxy, film orientation and built-in strain is crucial for II-VI layer integration with commercial hosting substrates used for the latest semiconductor process nodes such as Si and GaAs. In this work, we show that it is feasible to use CdTe:GaAs/InGaAs/GaAs released membranes yielding high-quality crystalline layers. A combination of Raman scattering and X-ray diffraction results provide a concise scenario of evolution along different growth stages. Surface roughness and contact potential are evaluated by atomic force and Kelvin-probe microscopy, respectively. The coexistence of faceting types (001) and (111) becomes clear using AFM and KPFM near the edge of a CdTe membrane. At such edges the local cleavage of the membrane is probed, exposing several layer steps and reflecting the growth history of CdTe. In this condition, KPFM clearly differentiates faceting (throughout contact potential difference) more accurately than height profiles, allowing a qualitative explanation of the nucleation evolution in our system. Finally, the occurrence of a 4% in-plane interfacial compressive strain is observed by nanomembrane release and modelling with finite element methods. The results showing the flexibility of high-quality CdTe layers here can improve optoelectronic integration of II-VI semiconductors.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"7 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144211300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Abundant Active-sites Engineering Enables Porous Co-N-C Electrocatalyst with Superior Oxygen Reduction Reaction Activity 丰富的活性位点工程使多孔Co-N-C电催化剂具有优异的氧还原反应活性

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-06-03 DOI: 10.1039/d4nr05131a

Yue Zhang, Zexuan Du, Huaping Mei, Bingye Song, Qianzhi Gou, Xiaolin Hu, Di Qi, Ran Gao, Xianda Sun

{"title":"Abundant Active-sites Engineering Enables Porous Co-N-C Electrocatalyst with Superior Oxygen Reduction Reaction Activity","authors":"Yue Zhang, Zexuan Du, Huaping Mei, Bingye Song, Qianzhi Gou, Xiaolin Hu, Di Qi, Ran Gao, Xianda Sun","doi":"10.1039/d4nr05131a","DOIUrl":"https://doi.org/10.1039/d4nr05131a","url":null,"abstract":"The insufficiency of effective active sites and the poor stability are identified as primary factors for the performance limitations of non-precious metal carbon-based catalysts towards oxygen reduction reaction (ORR). Increasing the number of non-precious metal and N-C active sites while achieving their uniform distribution continues to be a major challenge in the advancement of oxygen reduction catalysts. In this work, riboflavin was employed to modify the precursors ZIF-8 and ZIF-67, leveraging the high electronegativity of the nitrogen atoms in the isoalloxazine ring to enhance the anchoring effect on metal ions, thereby reducing the agglomeration of Co ions during pyrolysis. Furthermore, during the high-temperature pyrolysis process, the cleavage and integration of nitrogen-containing functional groups in riboflavin not only led to an increase in the doping density of heteroatoms N within the carbon framework but also enriched the pore structure of the catalyst. Co-N active sites and plentiful N-C active sites can be uniformly dispersed within the micro-mesoporous Co-N-C carbon framework, thereby boosting electron transfer rates and enlarging the electrochemical active area. The transmission resistance of components can be effectively reduced in the carbon framework with a hierarchical pore structure, which can enhance the rate of oxygen electrocatalytic reduction. Consequently, the obtained Co-N-C catalyst exhibits outstanding oxygen reduction reaction catalytic activity comparable to that of commercial Pt/C, along with superior stability and alcohol tolerance.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"29 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144201567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tuning photophysical properties of semiconducting polymer nanoparticles for improved photocatalytic activity. 调整半导体聚合物纳米颗粒的光物理性质以提高光催化活性。

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-06-02 DOI: 10.1039/d5nr01699a

Jose Sena-Fernandez, Esther Rebollar, Aitana Hurtado-Mendoza, Tim Murdoch, Juan F. Vega, Ignacio Martín-Fabiani, Tiberio Ezquerra, Aurora Nogales

引用次数: 0

Insights into the structural features of crumpling graphene nanoribbons 对卷曲石墨烯纳米带结构特征的洞察

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-06-02 DOI: 10.1039/d5nr00805k

Yangchao Liao, Long Chen, Wenjie Xia

{"title":"Insights into the structural features of crumpling graphene nanoribbons","authors":"Yangchao Liao, Long Chen, Wenjie Xia","doi":"10.1039/d5nr00805k","DOIUrl":"https://doi.org/10.1039/d5nr00805k","url":null,"abstract":"The exploration of graphene nanoribbons (GNRs) offers promising prospects by leveraging their unique physical properties and expanding their versatile applications. Here, we investigate the crumpling behavior of GNRs via coarse-grained molecular dynamics (CG-MD) simulations. By systematically varying the size and geometry (i.e., width and aspect ratio), we systematically examine the potential energy, configuration, mechanical state, and internal structure of crumpled GNRs in detail. Our findings indicate that as the size of GNRs increases, the self-adhering and self-folding behaviors during the crumpling process become more pronounced. Crumpled GNRs with large sizes exhibit greater adhesion energy but lower out-of-plane bending strain energy due to the formation of more planar regions and fewer sharp crumples compared to smaller GNR. By evaluating the relative shape anisotropy and representative configuration during the crumpling, we identify two aspect ratio-dependent crumpling modes for GNRs, namely, the edge-bending dominated (EBD) and sliding and folding dominated (SFD) crumpling modes, respectively. Notably, the width-dependent critical aspect ratio controlling the transition between these modes provides valuable insights into understanding and predicting the crumpling behavior of GNRs with varying geometries. Moreover, our assessment of curvature and stress distributions, and cross-sectional patterns of crumpled GNRs further reveals a reduction of mechanical heterogeneity with increased sheet size. Our study highlights the critical role of geometry in the crumpling behavior of GNRs, which has significant implications for the tailored design of crumpled ribbon-like sheet materials.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"11 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144201569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanozyme colorimetric sensor array based Au as electron bank facilitated surface charge redistribution of CeO2 for on-site detection and discrimination of sulfur-containing metal salts 以Au为电子库的纳米酶比色传感器阵列促进了CeO2的表面电荷重分布，用于含硫金属盐的现场检测和识别

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-06-02 DOI: 10.1039/d5nr01503k

Yang Song, Zhongyuan Gu, Hao Wang, Xinxin Shi, Changchun He, Tongxiang Li, Yan Chen, Zhao Li, Lin Tian

{"title":"Nanozyme colorimetric sensor array based Au as electron bank facilitated surface charge redistribution of CeO2 for on-site detection and discrimination of sulfur-containing metal salts","authors":"Yang Song, Zhongyuan Gu, Hao Wang, Xinxin Shi, Changchun He, Tongxiang Li, Yan Chen, Zhao Li, Lin Tian","doi":"10.1039/d5nr01503k","DOIUrl":"https://doi.org/10.1039/d5nr01503k","url":null,"abstract":"Developing a highly efficient array-based sensing platform for sulfur-containing metal salts (SCMs) analysis is imperious due to their potential to harm the environment and human health. Herein, we fabricate a ternary channel colorimetric sensor array technique to monitor multiple SCMs simultaneously, depending on Au nanoparticles loaded CeO2 nanobelts (Au/CeO2) heterostructure with excellent peroxidase-like (POD-like) activity. The results of XPS and DFT calculation revealed that Au NPs as electron bank can promote the charge redistribution on the surface of CeO2. This process increases the ratio of Ce3+/Ce4+, facilitates the release of OH* and the desorption of H2O, and significantly enhances the POD-like activity. Subsequently, a colorimetric-based sensor array based Au/CeO2 was developed, in integrating diverse degrees of TMB oxidation owing to their various catalysis behavior, leading to distinct patterns as \"fingerprints\" for different SCMs. The gained distinct patterns were recognized and processed via principal component analysis (PCA), enabling specific and sensitive identification and discrimination of different concentrations of SCMs with a detection limit of 5 µM. To advance the field determination of various SCMs concentrations, we creatively constructed a portable smartphone device-based autonomous sensing platform with a linear range of 5 - 110 μM, which further indicates the potential utility of colorimetric sensor arrays. This work opens new avenues for efficient on-site SCM detection and discrimination by enhancing POD-like activity of CeO2 through surface electron redistribution.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"236 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144193254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing Perovskite Solar Cell Efficiency and Stability: A Multimodal Prediction Approach Integrating Microstructure, Composition, and Processing Technology 提高钙钛矿太阳能电池的效率和稳定性：一种集成微结构、成分和加工技术的多模态预测方法

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-06-02 DOI: 10.1039/d5nr00364d

Wajeeha Rahman, Chengquan Zhong, Haotian Liu, Jingzi Zhang, Jiakai Liu, Kailong Hu, Xi Lin

{"title":"Enhancing Perovskite Solar Cell Efficiency and Stability: A Multimodal Prediction Approach Integrating Microstructure, Composition, and Processing Technology","authors":"Wajeeha Rahman, Chengquan Zhong, Haotian Liu, Jingzi Zhang, Jiakai Liu, Kailong Hu, Xi Lin","doi":"10.1039/d5nr00364d","DOIUrl":"https://doi.org/10.1039/d5nr00364d","url":null,"abstract":"The performances of perovskite solar cells (PSCs) are significantly influenced by material composition, processing techniques, and microstructure, all of which critically impact photovoltaic conversion efficiency (PCE). Traditional machine learning approaches often overlook multi-parameter coupling effects, leading to incomplete analyses. To tackle this challenge, we developed a multimodal model that integrates SEM-derived microstructural features, material composition, and processing parameters. Our model utilizes a feature extraction network with a Convolutional Block Attention Module (CBAM) and an adaptive feature fusion module, achieving an R² of 0.84 (RMSE: 1.89) for PCE prediction and an R² of 0.95 (RMSE: 0.77) for bandgap estimation. Among tested algorithms, the Gradient Boosting Regressor demonstrated superior performance. We also used machine learning to evaluate PSCs stability, an essential factor for renewable energy applications. The model classified stability categories with AUC scores of 0.76 (moderately stable), 0.81 (very stable), and 0.78 (unstable), indicating robust performance with room for refinement. This research emphasizes the significant direct relationship between larger perovskite grain sizes and higher PCE, offering actionable insights for material optimization. The integrity of our experimental validation is supported by comprehensive testing across different device sizes and mass production verification, demonstrating the scalability of our framework. By integrating material science and machine learning, this study advances the development of efficient, durable, and scalable PSCs, contributing to the broader adoption of renewable energy technologies.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"3 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144193337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using Newly Designed Porphyrin Photocatalyst Based on Triptycene to Emulate Natural Photosynthesis for Regioselective Fixation of NAD(P)+ to NAD(P)H and Synthesis of Value-Added Chemicals 利用新设计的基于三叶草烯的卟啉光催化剂模拟自然光合作用对NAD(P)+和NAD(P)H的区域选择性固定和增值化学品的合成

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-05-31 DOI: 10.1039/d4nr04461d

Rehana Shahin, Rajesh K. Yadav, Shaifali Mishra, Kanchan Sharma, Wonil Seo, Joonghan Kim, Navneet Kumar Gupta, Jin-Ook Baeg

{"title":"Using Newly Designed Porphyrin Photocatalyst Based on Triptycene to Emulate Natural Photosynthesis for Regioselective Fixation of NAD(P)+ to NAD(P)H and Synthesis of Value-Added Chemicals","authors":"Rehana Shahin, Rajesh K. Yadav, Shaifali Mishra, Kanchan Sharma, Wonil Seo, Joonghan Kim, Navneet Kumar Gupta, Jin-Ook Baeg","doi":"10.1039/d4nr04461d","DOIUrl":"https://doi.org/10.1039/d4nr04461d","url":null,"abstract":"This work explores a novel porphyrin photocatalyst based on triptycene, designed to replicate natural photosynthesis and facilitate regioselective fixation of NAD(P)+ to NAD(P)H and convert organic molecules into value- added chemicals. By leveraging the unique structural characteristics of triptycene, the photocatalyst amplifies light absorption and expedites electron transfer processes. The system exhibits a high selectivity for NAD(P)+ reduction under visible light irradiation, enabling the efficient production of NAD(P)H with low by-product formation. Additionally, the photocatalyst effectively catalyses the conversion of a variety of organic substrates into useful, underexplored motifs in medicine, demonstrating notable increases in yield and reaction efficiency in comparison to conventional techniques. This study contributes to the development of green technologies that emulate the effectiveness of natural photosynthesis, highlighting the potential of manufactured photocatalytic systems to promote sustainable chemical transformations. These results highlight the potential of porphyrin photocatalysts based on triptycene for advancing the field of photochemical catalysis and organic synthesis.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"41 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144183771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing InAsPSb/InAsP cladding structure to control carrier overflow and enhance emission in multiple quantum well LEDs 优化InAsPSb/InAsP包层结构以控制载流子溢出和增强多量子阱led的发射

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-05-31 DOI: 10.1039/d5nr01108f

Dongwan Kim, Byong Sun Chun, Phuc Dinh Nguyen, Jiyeon Jeon, Thu Trang Thi Bui, Minkyeong Kim, Jungwon Yoon, Chang Sug Lee, Sang Jun Lee

{"title":"Optimizing InAsPSb/InAsP cladding structure to control carrier overflow and enhance emission in multiple quantum well LEDs","authors":"Dongwan Kim, Byong Sun Chun, Phuc Dinh Nguyen, Jiyeon Jeon, Thu Trang Thi Bui, Minkyeong Kim, Jungwon Yoon, Chang Sug Lee, Sang Jun Lee","doi":"10.1039/d5nr01108f","DOIUrl":"https://doi.org/10.1039/d5nr01108f","url":null,"abstract":"We fabricated III-V compound semiconductor-based LEDs using InAsSb/InAsPSb multiple quantum-well (MQW) and investigated the effect of InAsPSb/InAsP cladding structure (doping concentration and thickness) on light emission. The LEDs were categorized into three types. MQW LED1 (lowest doping concentration and thinnest cladding layer), MQW LED2 (same doping concentration and cladding thickness as LED1 but with a thicker quantum barrier (QB) than MQW LED1), and MQW LED3 (highest doping concentration and thickest cladding layer). Electroluminescence (EL) results showed that MQW LED3, with higher doping concentration and thicker cladding layer, suppressed carrier overflow and exhibited a single, stronger emission peak. In contrast, MQW LED1 and MQW LED2, with lower doping concentration and thinner cladding layers, showed double weaker emission peaks due to carrier overflow. Temperature-dependent EL measurements indicated that MQW LED3 had superior thermal performance, with higher activation energy, indicating better carrier confinement. Simulations revealed that optimizing the interfacial barrier height between the cladding layer and the QB is crucial for controlling carrier overflow and enhancing carrier injection. Specifically, increasing the barrier height between the InAsPSb cladding layer and QB limits carrier overflow, while decreasing the barrier height between the InAsP cladding and the InAsPSb cladding layers improves carrier injection and increases EL intensity. These findings highlight the importance of optimizing the cladding structure to suppress carrier overflow, improve carrier recombination, and enhance the performance of III-V MQW-based optoelectronics.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"129 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144183815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Loading Pt clusters is more conductive for photocatalytic hydrogen evolution compared to single atoms and nanoparticles 与单原子和纳米粒子相比，负载铂簇对光催化析氢具有更强的导电性

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-05-30 DOI: 10.1039/d5nr01463h

Bo Li, Lipan Luo, Yujia Liu, Xiaohan Zhou, Yuyu Zhang, Lishuai Song, Nan Liu, Qing Tang, Zequan Li

{"title":"Loading Pt clusters is more conductive for photocatalytic hydrogen evolution compared to single atoms and nanoparticles","authors":"Bo Li, Lipan Luo, Yujia Liu, Xiaohan Zhou, Yuyu Zhang, Lishuai Song, Nan Liu, Qing Tang, Zequan Li","doi":"10.1039/d5nr01463h","DOIUrl":"https://doi.org/10.1039/d5nr01463h","url":null,"abstract":"Pt/TiO2 photocatalysts were synthesized using incipient wetness impregnation followed by oxidative and/or reductive thermal treatments. The loading dimensions of Pt elements on the TiO2 surface (PtP, PtSA, and PtC) were controlled by varying the impregnated solution. Experimental results demonstrate that PtC with intermediate size exhibits the highest photolysis rate under 300W xenon lamp irradiation, achieving a hydrogen yield of 11.42 mmol g^-1 h^-1 and an apparent quantum yield of 40.65%. Similarly, Ru/TiO2 and Ir/TiO2 photocatalysts prepared under the same conditions exhibited the same pattern. Photoelectrochemical tests reveal that PtC/TiO2 has the narrowest band gap, the highest interfacial charge transfer capacity, and the greatest carrier separation efficiency. DFT calculations indicate that PtC/TiO2 has the most suitable d-band center, resulting in a close-to-zero ΔGH* value of 0.05 eV. This optimal value significantly balances the adsorption and desorption of hydrogen intermediates (H*) during the photocatalytic hydrogen evolution (PHE) reaction. This study provides new insights into the preparation of precious metal-loaded photocatalysts.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"62 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0