Citation: XIE Deng-Yu, JIANG Yi, JI Yuan-Yuan, YING Ming-Hui, SHENG Zhen-Huan, ZHAO Wei, YIN Jing-Zhou, LI Qiao-Qi, ZHONG Hui, ZHANG Li-Li. Synthesis and Photocatalytic Performance of Attapulgite/g-C₃N₄-AgFeO₂ Composites[J]. Chinese Journal of Inorganic Chemistry, ;2019, 35(2): 236-244. doi: 10.11862/CJIC.2019.040 shu

Synthesis and Photocatalytic Performance of Attapulgite/g-C₃N₄-AgFeO₂ Composites

Jiangsu Key Laboratory for Low-Dimension Materials, Jiangsu Environmental Engineering Laboratory for Environmental Functional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian, Jiangsu 223300, China

Corresponding author: ZHANG Li-Li, zll@hytc.edu.cn
Received Date: 18 August 2018
Revised Date: 17 December 2018

Figures(10)

Attapulgite (ATP) was chosen as the matrix of g-C₃N₄ thin layer and AgFeO₂ nanoparticles to fabricate a series of ATP/g-C₃N₄-AgFeO₂-Y composites presenting both magnetic separation and high photocatalytic activity by in-situ chemical method, where Y stands for the mass percentage of ATP/g-C₃N₄ in the composite (Y=w_{ATP/g-C₃N₄}/(w_{ATP/g-C₃N₄}+w_AgFO₂)×100%). XRD, SEM, BET, UV-Vis, PL and ICP were used to characterize the structure and physicochemical properties of the products. Photodegradation of acid red G (ARG) was chosen as target to investigate the photocatalytic property of all the products. It was found that g-C₃N₄ thin layer was uniformly fixed on the surface of the ATP by forming a Si-O-C bond, while the AgFeO₂ nanoparticles were deposited on the surface of ATP/g-C₃N₄ uniformly to form a type Z heterojunction structure. ATP/g-C₃N₄-AgFeO₂-Y presented higher visible light photocatalytic performance than that of ATP/g-C₃N₄ and AgFeO₂. The photocatalytic activity of ATP/g-C₃N₄-AgFeO₂-Y changed with the content of ATP/g-C₃N₄, and when Y=57%, ATP/g-C₃N₄-AgFeO₂-57% shows the best photocatalytic activity. The degradation rate of 20 mg·L^-1 acid red G was up to 97.4%, and it remained at 94.2% after 4 cycles when catalyzed by ATP/g-C₃N₄-AgFeO₂-57%. The photocatalytic mechanism was studied by free radical trapping experiments. It was found that·O₂^- is the main active species in the photocatalytic process.
- physical chemistry,
- inorganic nonmetallic materials,
- visible light photocatalysis,
- attapulgite,
- g-C₃N₄,
- AgFeO₂
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Synthesis and Photocatalytic Performance of Attapulgite/g-C₃N₄-AgFeO₂ Composites