Oxygen vacancies (OVs) defect in metal oxide-based photocatalysts play crucial role in improving their charge carrier separation efficiencies to enhance their photocatalytic performances. In this work, OVs were introduced in...
Fe (III)-grafted Bi 2 MoO 6 nanoplates (Fe (III)/BMO) with varying small quantity of Fe (III) clusters modification were fabricated through a simple hydrothermal and impregnation process. The characterization results indicate that the modification of Fe (III) clusters on the surface of Bi 2 MoO 6 nanoplates with intimate interfacial contact is beneficial to the expansion of visible light absorption range and the separation of photoinduced carriers during the interface charge transfer process. The photocatalytic properties of the samples were studied by degradation of tetracycline (TC) and selective aerobic oxidation of biomass-derived chemical 5-hydroxymethylfuraldehyde (HMF) under visible light. The 1.5 wt% Fe (III) clusters-grafted Bi 2 MoO 6 nanoplates exhibited optimum photocatalytic activity, which is the TC degradation kinetic rate constant is 5.3 times higher than that of bare BMO, and the highest HMF conversion of 32.62% can be obtained with a selectivity of 95.30%. Furthermore, a possible visible light photocatalysis mechanism over Fe (III)/BMO sample has been proposed. This study may supply some insight for the development of visiblelight-driven Bi 2 MoO 6 -based photocatalysts applicable to both environmental remediation and biomass-derived chemical transformation.
This study investigates the degradation
of dimethyl phthalate (DMP)
with hydrogen peroxide and ferrate (Fe(VI)) under various reaction
conditions. The results showed that the optimum conditions for dimethyl
phthalate removal from water were as follows: (a) pH 7.0 and (b) the
original molar ratio of [Fe(VI)]/[H
2
O
2
]/[DMP]
equal to 10:2:1. Under the optimum conditions, the degradation rate
of DMP can reach 89.7% in 360 min. Furthermore, 2,5-dihydroxybenzaldehyde,
isophthalic acid, 2-ethylhexanol, oxalic acid, 2,6-dihydroxybenzoic
acid, 2,6-dihydroxybenzaldehyde, 2,5-dihydroxybenzoic acid, and monomethyl
phthalate were identified as the degradation intermediates, and degradation
pathways were proposed.
Herein, a novel broken case‐like carbon‐doped g‐C3N4 photocatalyst was obtained via a facile one‐pot pyrolysis and cost‐effective method using glyoxal‐modified melamine as a precursor. The obtained carbon/g‐C3N4 photocatalyst showed remarkable enhanced photocatalytic activity in the degradation of gaseous benzene compared with that of pristine g‐C3N4 under visible light. The pseudo‐first‐order rate constant for gaseous benzene degradation on carbon/g‐C3N4 was 0.186 hr−1, 5.81 times as large as that of pristine g‐C3N4. Furthermore, a possible photocatalytic mechanism for the improved photocatalytic performance over carbon/g‐C3N4 nanocomposites was proposed.
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