Iodine‐Deficient BiO1.2I0.6 Coupling with Bi2O3 for Degradation of Volatile Organic Compounds under Simulated Sunlight Irradiation. Issue 21 (10th October 2019)

• Record Type: Journal Article
• Authors: Wang, Shaomang; Guan, Yuan; Zeng, Ruiheng; Zhang, Zhijun; Liu, Liang; Li, Zhongyu; An, Wen; Fu, Yang
• Is Part Of: ChemSusChem. Volume 12:Issue 21(2019)
• Page Start: 4874
• Page End: 4881
• Publication Date: 2019-10-10
• Subjects: bismuth -- green chemistry -- iodine -- photochemistry -- volatile organic compounds; Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201901627
• Languages: English
• ISSNs: 1864-5631

Abstract

Abstract: A photocatalyst with a high separation efficiency of carriers is crucial for the photocatalytic efficient decomposition of volatile organic compounds (VOCs). In this work, a new iodine‐deficient BiO1.2 I0.6 /Bi2 O3 photocatalyst was developed through a solvothermal approach coupled with thermal decomposition. The 2 wt % BiO1.2 I0.6 /Bi2 O3 sample demonstrated optimal photocatalytic activity for the degradation of toluene, achieving a 55.1 % mineralization ratio under 8 h of irradiation, which was 14.9 and 2.1 times higher than those of BiO1.2 I0.6 and Bi2 O3, respectively. Compared with BiO1.2 I0.6 and Bi2 O3, 2 wt % BiO1.2 I0.6 /Bi2 O3 exhibited the weakest fluorescence band, highest photocurrent density, and lowest impedance; thus suggesting that Bi2 O3 compounded by 2 wt % BiO1.2 I0.6 distinctly promoted the separation efficiency of carriers. The hydroxyl radical ( . OH) was the main active species, apart from holes, for the photocatalytic degradation of toluene. Abstract : Digging holes : A new iodine‐deficient BiO1.2 I0.6 /Bi2 O3 photocatalyst with a high separation efficiency of carriers is developed through a solvothermal approach coupled with thermal decomposition. This photocatalyst is used to degrade volatile organic compounds, in particular, toluene.