Synthesis and Photocatalytic Properties of Polyhydroxylated Fullerenes Modified Nitrogen-Doped Titanium Dioxide Composites

Abstract

Abstract: Polyhydroxylated fullerenes (PHF) were prepared bythe reaction of fullerene with NaOH in the presence oftetrabutylammonium hydroxide (TBAH) catalytic alkali method. PHF modified nitrogen doped titanium dioxide (PHF-N-TiO₂) was synthesized by a sol-gel method using the PHF as-prepared. The morphology and composition of the PHF-N-TiO₂ have been characterized. The photocatalytic performance of the PHF-N-TiO₂ for catalytic reduction of CO₂ was investigated. The results show that the PHF-N-TiO₂ performs enhanced absorption in the visible light region, leading to improved visible photocatalytic activity for the catalytic reduction of CO₂ at room temperature. The average production rate of CO is up to 5.560 μmol·g^-1·h^-1. The average production rate of CH₄ is 0.789 μmol·g^-1·h^-1. It is believed that the combination of PHF modification and nitrogen doping improves the visible photocatalytic activity of TiO₂.

Key words: photocatalytic reduction of CO₂, polyhydroxylated fullerenes, nitrogen doping, titanium dioxide, sol-gel method, room temperature, visible light

CLC Number:

TB332

CHEN Yifan, TANG Guoqin, ZHAO Chunxia, CHEN Yekai. Synthesis and Photocatalytic Properties of Polyhydroxylated Fullerenes Modified Nitrogen-Doped Titanium Dioxide Composites[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(8): 2935-2942.

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