Facile construction of reduced graphene oxide supported three-dimensional polyaniline/WO2.72 nanobelt-flower as a full solar spectrum light response catalyst for efficient photocatalytic conversion of bromate.

Abstract:

:As a carcinogenic byproduct in drinking water treatment, bromate has raised global concerns on environmental and health hazard, calling for effective treatments. In the current work, a novel reduced graphene oxide supported polyaniline/WO2.72 nanobelt-flower (RGO/PANI/WO2.72) ternary composite was prepared through a solvent volatilization method for photocatalytic reduction of bromate. The prepared sample was characterized, and the influence of aqueous pH, ions and dissolved oxygen on the bromate reduction was explored. As expected, the introduction of RGO and PANI on the WO2.72 exhibited great synergistic effects on the separation of photogenerated carriers. The calculated reduction rate constant of RGO/PANI/WO2.72 was about six times as high as that of pure WO2.72. Specially, the prepared photocatalyst possessed strong optical absorption in a broad range of 250-2500 nm, and thus displaying excellent catalytic performance in utilization of all solar spectrum energy. Moreover, the RGO/PANI/WO2.72 exhibited stable photocatalytic activity in cycling test. Considered holistically, the present study offered a valuable approach for rational construction of heterogeneous structure in the development of bromate-catalyzed reduction.

journal_name

Chemosphere

journal_title

Chemosphere

authors

Zhao X,You Y,Huang S,Cheng F,Chen P,Li H,Zhang Y

doi

10.1016/j.chemosphere.2019.02.001

subject

Has Abstract

pub_date

2019-05-01 00:00:00

pages

781-788

eissn

0045-6535

issn

1879-1298

pii

S0045-6535(19)30217-6

journal_volume

222

pub_type

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