Recent Developments on Gas‐Phase Volatile Organic Compounds Abatement Based on Photocatalysis

Abstract

The health and environmental problems caused by volatile organic compounds (VOCs) have attracted wide attention. Photocatalytic technology provides a green and sustainable way for VOCs removal. How to build a highly efficient and stable photocatalyst is of great significance to promote the practical application of photocatalysis technology. In this review, the literatures on photocatalytic oxidation in VOCs are surveyed and systematically categorized based on the types of photocatalytic materials. The methods of improving photocatalytic activity are studied, and the deactivation process of photocatalyst is discussed. Finally, the reaction mechanism is summarized according to the charge separation process and the classification of reactive oxygen species.

From Design to Applications: A Comprehensive Review on Porous Frameworks for Photocatalytic Volatile Organic Compounds (VOCs) Removal

“…For instance, Leung et al discussed the aspects of catalyst immobilization technology and reactor design for the elimination of VOCs, [10] whereas Masresha and coworkers substantiated the role of humidity in photocatalytic degradation of airborne VOCs. [11] On the other hand, Bian and coworkers reviewed the TiO 2 -based systems for photocatalytic VOC oxidation, [12] and Almaie et al reviewed different types of photocatalysts for VOC removal. [13] Compared to these, a comprehensive review of tunable porous networks viz.…”

Reusable magnetic mixture of CuFe2O4–Fe2O3 and TiO2 for photocatalytic degradation of pesticides in water

“…[13][14][15] An important determinant is also non-toxicity of the reaction end-products, especially when photocatalytic degradation concerns phenolic pollutants. 16 During the last three decades, titania (TiO 2 ) has attracted much attention as a robust high-efficiency solar light activated photocatalyst material. However, due to its rather large band gap, TiO 2 absorbs only a fraction of sunlight.…”

“…13–15 An important determinant is also non-toxicity of the reaction end-products, especially when photocatalytic degradation concerns phenolic pollutants. 16…”

Selective Cocatalyst Decoration of Narrow‐Bandgap Broken‐Gap Heterojunction for Directional Charge Transfer and High Photocatalytic Properties

“…[ 2,3 ] The light‐harvesting ability of materials is a key step to ensure a high VOCs conversion yield. [ 3 ] Semiconductors ( E g ≤ 1.7 eV) with narrow‐bandgap, such as chalcogenides (e.g., Bi 2 S 3 , MoS 2 ), [ 4–6 ] phosphides (e.g., Ni 2 P, Rh x P), [ 7,8 ] nitrides (e.g., Cu 3 N, Co x N), [ 9 ] carbides (e.g., Ti 3 C 2 T x , Ni 3 C), [ 10,11 ] metal oxides (e.g., MnO 2 , CuO), [ 12,13 ] and perovskites (e.g., MAPbI 3 ), [ 14 ] can enhance the light absorption ability of materials. These materials were widely explored as photosensitizers, cocatalysts, or photocatalysts.…”

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The solar-driven catalysis is promising for the VOCs degradation to pollution-free CO 2 and H 2 O at room temperature. [2,3] The lightharvesting ability of materials is a key step to ensure a high VOCs conversion yield. [3] Semiconductors (E g ≤ 1.7 eV) with narrow-bandgap, such as chalcogenides (e.g., Bi 2 S 3 , MoS 2 ), [4][5][6] phosphides (e.g., Ni 2 P, Rh x P), [7,8] nitrides (e.g., Cu 3 N, Co x N), [9] carbides (e.g., Ti 3 C 2 T x , Ni 3 C), [10,11] metal oxides (e.g., MnO 2 , CuO), [12,13] and perovskites (e.g., MAPbI 3 ), [14] can enhance the light absorption ability of materials.

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