# Fundamentals of TiO 2 Photocatalysis: Concepts, Mechanisms, and Challenges

“Fundamentals of TiO 2 Photocatalysis: Concepts, Mechanisms, and Challenges” (2019), by Qing Guo et al. Energy research paper. Original abstract below, unchanged. No free PDF was found.

- Authors: Qing Guo, Chuanyao Zhou, Zhibo Ma, Xueming Yang
- Published: August 18, 2019
- Field: Energy
- DOI: https://doi.org/10.1002/adma.201901997
- Source: https://doi.org/10.1002/adma.201901997

## Abstract

Photocatalysis has been widely applied in various areas, such as solar cells, water splitting, and pollutant degradation. Therefore, the photochemical mechanisms and basic principles of photocatalysis, especially TiO 2 photocatalysis, have been extensively investigated by various surface science methods in the last decade, aiming to provide important information for TiO 2 photocatalysis under real environmental conditions. Recent progress that provides fundamental insights into TiO 2 photocatalysis at a molecular level is highlighted. Insights into the structures of TiO 2 and the basic principles of TiO 2 photocatalysis are discussed first, which provides the basic concepts of TiO 2 photocatalysis. Following this, details of the photochemistry of three important molecules (oxygen, water, methanol) on the model TiO 2 surfaces are presented, in an attempt to unravel the relationship between charge/energy transfer and bond breaking/forming in TiO 2 photocatalysis. Lastly, challenges and opportunities of the mechanistic studies of TiO 2 photocatalysis at the molecular level are discussed briefly, as well as possible photocatalysis models.

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