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- W2970011089 abstract "The band structure of BiOCl 0.3 Br 0.7 solid solution, BiOCl 0.7 I 0.3 solid solution, and BiOBr 0.7 I 0.3 solid solution, and the synergy of adsorption and photocatalytic reduction for toxicity elimination of Cr(VI). • BiOCl x Br 1-x , BiOCl x I 1-x and BiOBr x I 1-x were prepared by facile solvothermal method. • BiOCl x Br 1-x , BiOCl x I 1-x and BiOBr x I 1-x possesses high internal hole-scavenging capacity. • BiOCl x Br 1-x , BiOCl x I 1-x and BiOBr x I 1-x showed efficient toxicity elimination of Cr (VI). • Toxicity elimination of Cr (VI) are due to the synergy of adsorption and photocatalysis. • BiOCl x Br 1-x , BiOCl x I 1-x and BiOBr x I 1-x are promising candidates for Cr (VI) remediation. The ecological toxicity of photocatalysts and toxicity reduction of Cr(VI) have attracted much attention. The development of environmentally-friendly photocatalysts with adsorption and internal hole-scavenging capacity for toxicity reduction of aqueous Cr(VI) via facile preparation method is desirable. In this study, visible-light-active BiOCl x Br 1-x , BiOCl x I 1-x and BiOBr x I 1-x solid solutions were prepared by simple solvothermal strategy. The BiOCl 0.3 Br 0.7 , BiOCl 0.7 I 0.3 and BiOBr 0.7 I 0.3 solid solutions exhibited excellent adsorption capacity and photoreduction ability. The removal efficiency of Cr(VI) by BiOCl 0.3 Br 0.7 was 97.7% within 60 min. BiOCl 0.7 I 0.3 and BiOBr 0.7 I 0.3 can remove Cr(VI) almost completely within less than 30 min, which were much higher than those by BiOCl (81.6%) and BiOBr (67.4%) due to joint effect of adsorption and photoreduction. More importantly, the toxicity evaluation confirmed nontoxicity of BiOCl x Br 1-x , BiOCl x I 1-x and BiOBr x I 1-x , and rapid toxicity elimination process of Cr(VI)." @default.
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- W2970011089 date "2020-02-01" @default.
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- W2970011089 title "Efficient toxicity elimination of aqueous Cr(VI) by positively-charged BiOClxI1-x, BiOBrxI1-x and BiOClxBr1-x solid solution with internal hole-scavenging capacity via the synergy of adsorption and photocatalytic reduction" @default.
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- W2970011089 doi "https://doi.org/10.1016/j.jhazmat.2019.121127" @default.
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