Pt single-atoms supported on nitrogen-doped carbon dots for highly efficient photocatalytic hydrogen generation. Issue 29 (16th July 2020)

• Record Type: Journal Article
• Authors: Luo, Hui; Liu, Ying; Dimitrov, Stoichko D.; Steier, Ludmilla; Guo, Shaohui; Li, Xuanhua; Feng, Jingyu; Xie, Fei; Fang, Yuanxing; Sapelkin, Andrei; Wang, Xinchen; Titirici, Maria-Magdalena
• Is Part Of: Journal of materials chemistry. Volume 8:Issue 29(2020)
• Page Start: 14690
• Page End: 14696
• Publication Date: 2020-07-16
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0ta04431h
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Pt single-atom catalysts prepared via photo-deposition on nitrogen-doped carbon dots exhibit high activity and stability towards photocatalytic H2 production. Abstract : Single-atom catalysis has become the most active new frontier in energy conversion applications due to its remarkable catalytic activity and low material consumption. However, the issue of atom aggregation during the synthesis process or catalytic reaction must be overcome. In this work, we have developed a one-step photo-deposition process to fabricate Pt single-atom catalysts (SACs) on nitrogen doped carbon dots (NCDs). The Pt–NCDs were then hybridized with TiO2 to achieve high hydrogen generation activity and to understand the fundamentals at the Pt/NCD/TiO2 interface. The synergistic effect of Pt SAC and NCDs with maximized atomic efficiency of Pt and improved charge transfer capability provides a new strategy to rationally design a multi-scale photocatalyst structure to achieve high H2 evolution efficiency. The facile synthesis process also holds great potential for various applications such as electrocatalysis, heterogeneous catalysis and drug delivery, providing a promising way to reduce the high cost of noble metals.