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An Efficient TiO2/rGO Hybrids with Enhanced Photocatalytic Degradation Toward Reactive Red 195
Environmental Engineering Science ( IF 1.8 ) Pub Date : 2021-06-11 , DOI: 10.1089/ees.2020.0188
Jing Fang 1 , Xiaohong Gao 1 , Jing Sun 1 , Xiaobin Cai 1 , Cunwang Ge 2 , Qi Li 2
Affiliation  

A common azo dye, Reactive Red 195 (RR195), is widely used in the printing and dyeing industry. Due to the complicated composition of RR195, how to degrade it has aroused great interest from researchers. The extensive use of RR195 caused environmental pollution and irreversible recovery. More important, few reports have been made to investigate the degradation of RR195, especially intrinsic mechanism. Herein, we present a facile strategy for the synthesis of reduced graphene oxide-supported biphasic titanium dioxide (B-TiO2/rGO). Benefiting from high conductivity and specific surface area provided by rGO, the recombination efficiency of photoinduced electron-hole pairs stemming from TiO2 is significantly suppressed, and broadening the photoreaction range of TiO2, leading to more stable photocatalytic performance for RR195. The degradation efficiency of RR195 by using B-TiO2/rGO could reach 99% at neutral solution. This work provides a new insight to rational design high-effiency photocatalysts that hopefully applied to pratical industrial manufacture.

中文翻译:

具有增强的光催化降解活性红 195 的高效 TiO2/rGO 杂化物

一种常见的偶氮染料,活性红 195 (RR195),广泛用于印染行业。由于RR195的成分复杂,如何降解它引起了研究人员的极大兴趣。RR195的大量使用造成了环境污染和不可逆转的恢复。更重要的是,很少有报告研究 RR195 的降解,特别是内在机制。在此,我们提出了一种合成还原氧化石墨烯负载的双相二氧化钛 (B-TiO 2 /rGO)的简便策略。得益于rGO提供的高电导率和比表面积,TiO 2光致电子空穴对的复合效率显着降低,拓宽了TiO 2的光反应范围, 导致 RR195 的光催化性能更稳定。B-TiO 2 / rGO对RR195的降解效率在中性溶液中可达99%。这项工作为合理设计高效光催化剂提供了新的见解,有望应用于实际工业制造。
更新日期:2021-06-15
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