ACS Nanoscience Au最新文献

Surface or Bulk? Mechanistic Insights into Ni2+-Doped Brookite TiO2 Photocatalysts 平装还是散装？Ni2+掺杂Brookite TiO2光催化剂的机理研究

IF 6.3

ACS Nanoscience Au Pub Date : 2025-07-30 DOI: 10.1021/acsnanoscienceau.5c00087

Luke T. Coward, Thu T. M. Chu, Xiaotong Li, Pin Lyu* and Oksana Love*,

{"title":"Surface or Bulk? Mechanistic Insights into Ni2+-Doped Brookite TiO2 Photocatalysts","authors":"Luke T. Coward, Thu T. M. Chu, Xiaotong Li, Pin Lyu* and Oksana Love*, ","doi":"10.1021/acsnanoscienceau.5c00087","DOIUrl":"https://doi.org/10.1021/acsnanoscienceau.5c00087","url":null,"abstract":"Solar energy, as an alternative source to catalyze chemical reactions, has been rapidly utilized and developed over the past few decades, particularly with TiO2-based semiconductor photocatalysts. Regulating the carrier dynamics under photoexcitation and controlling the interfacial reaction kinetics have been emphasized as fundamental approaches to increase the quantum yield of photocatalytic systems. Transition-metal-ion doping is a promising strategy to address these issues, although the precise roles and optimal spatial distribution of dopants remain unclear. In this systematic study, we designed surface-only, bulk-only, and surface-bulk-doped brookite TiO2 nanoparticles using Ni2+ as dopants and evaluated the photocatalytic performance of these doped samples based on the apparent reaction rate constants. It is demonstrated that the crystal structure, morphology, and surface composition did not change significantly after doping, and the observed enhancement in photocatalysis can be correlated to the doping positions. Continuous doping from the bulk to surface, forming the trap-to-transfer centers to mediate interfacial electron transfer, proves to be the most effective pathway. This proof-of-concept work offers a unique perspective on the transition-metal-ion-induced photocatalysis mechanism of brookite TiO2 nanoparticles and will help us design more efficient photocatalytic systems.","PeriodicalId":29799,"journal":{"name":"ACS Nanoscience Au","volume":"5 4","pages":"324–336"},"PeriodicalIF":6.3,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsnanoscienceau.5c00087","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144863068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using Electrochemistry to Benchmark, Understand, and Develop Noble Metal Nanoparticle Syntheses 利用电化学基准，理解和发展贵金属纳米颗粒的合成

IF 6.3

ACS Nanoscience Au Pub Date : 2025-07-18 DOI: 10.1021/acsnanoscienceau.5c00051

Gabriel C. Halford, Sebastian Hertle, Harikrishnan N. Nambiar and Michelle L. Personick*,

{"title":"Using Electrochemistry to Benchmark, Understand, and Develop Noble Metal Nanoparticle Syntheses","authors":"Gabriel C. Halford, Sebastian Hertle, Harikrishnan N. Nambiar and Michelle L. Personick*, ","doi":"10.1021/acsnanoscienceau.5c00051","DOIUrl":"https://doi.org/10.1021/acsnanoscienceau.5c00051","url":null,"abstract":"The complex chemical nature of metal nanoparticle synthesis presents obstacles for the mechanistic understanding of nanoparticle growth and predictive synthesis design, despite significant progress in this area. Real-time characterization of the chemical processes that take place throughout nanoparticle growth will enable progress toward addressing outstanding challenges in metal nanoparticle synthesis, such as mitigating synthetic reproducibility issues, defining chemical mechanisms that direct nanoparticle growth, and designing synthetic conditions for previously unachievable combinations of nanoparticle shape and composition. In this Perspective, we present open-circuit potential (OCP) measurements as an in situ, real-time method for characterizing chemical changes during nanoparticle growth and discuss the method’s strengths in comparison to and in combination with other characterization techniques. We propose the use of OCP measurements as benchmarks for troubleshooting irreproducibility and streamlining synthetic optimization. Finally, we explore possibilities for using the increased parameter space accessible by electrodeposition to accelerate the development of shape-selective nanoparticle syntheses.","PeriodicalId":29799,"journal":{"name":"ACS Nanoscience Au","volume":"5 4","pages":"240–261"},"PeriodicalIF":6.3,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsnanoscienceau.5c00051","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144863032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Learning from Metal Nanocrystal Heterogeneity: A Need for Information-Rich and High-Throughput Single-Nanocrystal Measurements 从金属纳米晶体的非均匀性学习：需要信息丰富和高通量的单纳米晶体测量

IF 6.3

ACS Nanoscience Au Pub Date : 2025-07-16 DOI: 10.1021/acsnanoscienceau.5c00033

Megan Knobeloch, Zachary J. O’Dell, Madison E. Edwards, Chuanliang Huang, Mai Nguyen, Oluwasegun J. Wahab, Lane A. Baker, Graeme Henkelman, Xingchen Ye, Xin Yan, Katherine A. Willets and Sara E. Skrabalak*,

{"title":"Learning from Metal Nanocrystal Heterogeneity: A Need for Information-Rich and High-Throughput Single-Nanocrystal Measurements","authors":"Megan Knobeloch, Zachary J. O’Dell, Madison E. Edwards, Chuanliang Huang, Mai Nguyen, Oluwasegun J. Wahab, Lane A. Baker, Graeme Henkelman, Xingchen Ye, Xin Yan, Katherine A. Willets and Sara E. Skrabalak*, ","doi":"10.1021/acsnanoscienceau.5c00033","DOIUrl":"https://doi.org/10.1021/acsnanoscienceau.5c00033","url":null,"abstract":"Metal nanocrystals (NCs) show utility in a variety of applications due to their unique structure-dependent properties. Isolating these structure–property relationships is crucial for NC design, but heterogeneities present in NC ensembles as well as limitations in NC characterization strategies complicate this goal. Herein, we describe the various types of intraparticle and interparticle heterogeneities common to NC ensembles and then provide a detailed description and comparison of single-particle techniques that can be used to characterize these different heterogeneities. Case studies then showcase the use of multimodal characterization approaches, where multiple, primarily single-NC techniques are used in tandem to provide new insights into metal NC structure–property relationships. We conclude with a critique of single-NC techniques that motivates the development of new high-throughput and high-resolution single-NC characterization approaches as well as computational tools, with a proposed workflow outlined to accelerate NC design and discovery.","PeriodicalId":29799,"journal":{"name":"ACS Nanoscience Au","volume":"5 4","pages":"219–239"},"PeriodicalIF":6.3,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsnanoscienceau.5c00033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144863098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Introducing the Tutorial Manuscript Type at the ACS Au Community Journals 介绍ACS Au社区期刊的教程稿件类型

IF 6.3

ACS Nanoscience Au Pub Date : 2025-07-10 DOI: 10.1021/acsnanoscienceau.5c00068

Squire J. Booker, Stephanie L. Brock, Xiangdong Li, Géraldine Masson, Sébastien Perrier, Vivek V. Ranade, Raymond E. Schaak, Gemma C. Solomon and Shelley D. Minteer*,

引用次数: 0

IF 4.8