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
Chemospherejournal_title
Chemosphereauthors
Zhao X,You Y,Huang S,Cheng F,Chen P,Li H,Zhang Ydoi
10.1016/j.chemosphere.2019.02.001subject
Has Abstractpub_date
2019-05-01 00:00:00pages
781-788eissn
0045-6535issn
1879-1298pii
S0045-6535(19)30217-6journal_volume
222pub_type
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