Efficient degradation of VOCs using semi-coke activated carbon loaded ternary Z-scheme heterojunction photocatalyst BiVO₄–BiPO₄–g-C₃N₄ under visible light irradiation

Abstract

Coal chemical industry generates large amounts of solid waste and volatile organic compounds (VOCs). In this study, the solid waste semi-coke powder obtained in the semi-coke production process was used...

Bismuth-Based Z-Scheme Heterojunction Photocatalysts for Remediation of Contaminated Water

“…Chemicals known as volatile organic compounds (VOCs) are frequently released from the burning of fuels, industrial production of waste gases, and the use of decorative paints and photochemical pollution. − Among VOs, toluene threatens the ecosystem and human life. Hence, several methods such as adsorption, biofiltration, and thermal catalysis have been used for removal of toluene from environment .…”

“…The surface area of the prepared semicoke activated carbon is 619.27 m g 1 . Under simulated sunshine irradiation, the composite of BiVO 4 /BiPO 4 /g-C 3 N 4 /SAC degrades toluene by 85.6% in 130 min, which is 2.43 times that of pure photocatalyst . Recently, Xu et al prepared Bi 2 O 3 quantum dots deco- rated TiO 2 /BiOBr dual Z-scheme heterojunction photocatalysts for degradation of gaseous toluene .…”

“…Under simulated sunshine irradiation, the composite of BiVO 4 /BiPO 4 /g-C 3 N 4 /SAC degrades toluene by 85.6% in 130 min, which is 2.43 times that of pure photocatalyst. 173 Recently, Xu et al prepared Bi 2 O 3 quantum dots deco-rated TiO 2 /BiOBr dual Z-scheme heterojunction photocatalysts for degradation of gaseous toluene. 172 These studies result shows that, the presences of Bi black-TiO 2 photocatalysts for degradation of toluene was synthesized by using a combination of hydrothermal and sol− gel methods.…”

Influence of the composition of the BiPO4-BiVO4 system on the phase formation, morphology, and properties of nanocrystalline composites obtained under hydrothermal conditions

“…Nevertheless, bismuth vanadate in the monoclinic system has rather low charge transfer rate and surface adsorption [6]. The structure of monoclinic bismuth vanadate is modified using various additives for achieving the maximum efficiency of the photocatalyst, and can interfere with the recombination of the generated electron-hole pairs [7][8][9]. Compounds containing PO 3− 4 anions are able to improve photocatalytic properties, despite the fact that there are quite wide band gap.…”

“…In [26], a hollow BiVO 4 /BiPO 4 nanocomposite has been obtained under hydrothermal conditions, and showed great potential for use as a photocatalyst. To improve the photocatalytic characteristics, more complex doped or ternary composites based on BiVO 4 /BiPO 4 are also considered [8,9].…”