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Cited by 406

The DOI matches its Crossref record; 70 of the 70 references it cites were found in a registry or an index.

Enhancement of H2O2 Decomposition by the Co-catalytic Effect of WS2 on the Fenton Reaction for the Synchronous Reduction of Cr(VI) and Remediation of Phenol

Dong, Chencheng, Ji, Jiahui, Shen, Bin, Xing, Mingyang, Zhang, Jinlong·2018·Environmental Science & Technology
DOI 10.1021/acs.est.8b02403
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Abstract

The greatest problem in the Fe(II)/H 2 O 2 Fenton reaction is the low production of ·OH owing to the inefficient Fe(III)/Fe(II) cycle and the low decomposition efficiency of H 2 O 2 (<30%). Herein, we report a new discovery regarding the significant co-catalytic effect of WS 2 on the decomposition of H 2 O 2 in a photoassisted Fe(II)/H 2 O 2 Fenton system. With the help of WS 2 co-catalytic effect, the H 2 O 2 decomposition efficiency can be increased from 22.9% to 60.1%, such that minimal concentrations of H 2 O 2 (0.4 mmol/L) and Fe 2+ (0.14 mmol/L) are necessary for the standard Fenton reaction. Interestingly, the co-catalytic Fenton strategy can be applied to the simultaneous oxidation of phenol (10 mg/L) and reduction of Cr(VI) (40 mg/L), and the corresponding degradation and reduction rates can reach up to 80.9% and 90.9%, respectively, which are much higher than the conventional Fenton reaction (52.0% and 31.0%). We found that the expose reductive W 4+ active sites on the surface of WS 2 can greatly accelerate the rate-limiting step of Fe 3+ /Fe 2+ conversion, which plays the key role in the decomposition of H 2 O 2 and the reduction of Cr(VI). Our discovery represents a breakthrough in the field of inorganic catalyzing AOPs and greatly advances the practical utility of this method for environmental applications.

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Metadata

Authors
Dong, C., Ji, J., Shen, B., Xing, M., & Zhang, J.
Venue
Environmental Science & Technology
Publisher
American Chemical Society (ACS)
Published
2018-09-04
Volume
52
Issue
19
Pages
11297-11308
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
DOI
10.1021/acs.est.8b02403
OpenAlex
W2891022562
Cited by
406
References
70
FWCI
15.91
Type
journal article
Language
en
Open access
closed

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