Bui Dai-Phat, Pham Minh-Thuan, Tran Hong-Huy, Nguyen Thanh-Dat, Cao Thi Minh, Pham Viet Van
Photocatalysis Research Group (PRG), Faculty of Materials Science and Technology, University of Science, VNU-HCM, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City 700000, Vietnam.
Vietnam National University-Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000, Vietnam.
ACS Omega. 2021 Oct 5;6(41):27379-27386. doi: 10.1021/acsomega.1c04215. eCollection 2021 Oct 19.
Photocatalysis has been studied and considered as a green and practical approach in addressing environmental pollution. However, factors that affect photocatalytic performance have not been systematically studied. In this work, we have presented a comprehensive roadmap for characterizing, interpreting, and reporting semiconductors' electrical and optical properties through routinely used techniques such as diffuse reflectance spectroscopy, electrochemical techniques (Mott-Schottky plots), photoluminescence, X-ray photoelectron spectroscopy, and ultraviolet photoelectron spectroscopy in the context of photocatalysis. Having precisely studied the band structure of three representative photocatalysts, we have presented and highlighted the essential information and details, which are critical and beneficial for studies of (1) band alignments, (2) redox potentials, and (3) defects. Further works with a comprehensive understanding of the band structure are desirable and hold great promise.
光催化已被研究并被视为解决环境污染问题的一种绿色且实用的方法。然而，影响光催化性能的因素尚未得到系统研究。在这项工作中，我们提出了一个全面的路线图，用于在光催化背景下，通过常规使用的技术，如漫反射光谱、电化学技术（莫特-肖特基图）、光致发光、X射线光电子能谱和紫外光电子能谱，来表征、解释和报告半导体的电学和光学性质。在精确研究了三种代表性光催化剂的能带结构后，我们呈现并强调了关键信息和细节，这些对于研究（1）能带排列、（2）氧化还原电位和（3）缺陷至关重要且有益。对能带结构有全面理解的进一步研究是可取的，并且前景广阔。
