Open AccessPreparation of Graphite Phase Bismuth Carbon Nitride Vanadate Composites and Experimental Analysis of Free Radical Capture
Author(s) -
WeiE Wang,
Bohong Wu,
Zhiyang Gao,
Yuguang Lv
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/898/1/012025
Subject(s) - photocatalysis , bismuth vanadate , materials science , visible spectrum , degradation (telecommunications) , carbon nitride , catalysis , composite number , graphite , chemical engineering , composite material , photochemistry , chemistry , organic chemistry , optoelectronics , telecommunications , computer science , engineering
Photocatalysts are mainly divided into two categories: one is that they have good response to sunlight and visible light, such as BiVO 4 and Fe 2 O 3 ; One is that it has its own defects and can not make full use of the energy converted by visible light. In recent years, a class of oxides have attracted much attention because of their good performance of visible light photocatalytic degradation of pollutants. People also have a strong interest in the research of compound oxides in pollutant degradation. In order to further clarify the photocatalytic mechanism of GCB composite samples, different capture agents were added to determine the main active species in the photocatalytic process. Only through the method of modification, the synergistic effect can enhance its photocatalytic activity. 1% g-C 3 N 4 /BiVO 4 (GCB) sample, drhb = 90.4%, the photocatalytic activity did not change significantly after adding IPA. After adding EDTA and VC, the photocatalytic activity decreased, drhb = 32.6% and drhb = 51%. Therefore, the experiments show that h + and ·O 2- are active species of GCB catalytic system, O2 is more important for RHB degradation.