VIS-active TiO2 films decorated by expanded graphite: impact of the exfoliation time on the photocatalytic behaviour

被引：3

作者：

Bento, Rodrigo Teixeira ^{[1
,3
]}

Correa, Olandir Vercino ^{[1
]}

Gastelois, Pedro Lana ^{[2
]}

Pillis, Marina Fuser ^{[1
]}

机构：

[1] Univ Sao Paulo, Nucl & Energy Res Inst, IPEN CNEN, Sao Paulo, SP, Brazil

[2] Univ Fed Minas Gerais, Nucl Technol Dev Ctr, CDTN CNEN, Belo Horizonte, MG, Brazil

[3] Univ Sao Paulo, Nucl & Energy Res Inst, IPEN CNEN, Prof Lineu Prestes Ave 2242, Sao Paulo, SP, Brazil

来源：

ENVIRONMENTAL TECHNOLOGY | 2024年 / 45卷 / 10期

关键词：

Expanded graphite; TiO2; liquid-phase exfoliation; photocatalysis; heterojunction; REDUCED GRAPHENE OXIDE; WATER-TREATMENT; DOPED TIO2; PERFORMANCE; CONSTRUCTION; DEGRADATION; PARAMETERS; REDUCTION; MECHANISM; GROWTH;

D O I：

10.1080/09593330.2022.2163708

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

TiO2/C nanocomposite films were applied on water treatment. Expanded graphite nanosheets (EG) were obtained by UVC-assisted liquid-phase exfoliation technique, without the addition of acids, surfactants, or aggressive oxidizing agents, which characterizes the process as an eco-friendly method. The carbon nanosheets were synthesized directly from graphite bulk at different times and deposited on TiO2 films surface by airbrush spray coating method, forming a TiO2/C heterojunction. The increase in the exfoliation time promoted a more efficient photocatalytic dye removal under visible light. Morphological modifications, changes in the electronic structure, and wide range of light absorption were observed from the TiO2/C heterojunction formation. The results showed that hybrid TiO2/C supported photocatalyst is a promise alternative for practical photocatalytic applications under sunlight.

引用

页码：2022 / 2033

页数：12

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