DataVXACS Applied Nano MaterialsPaper
journal article·2022-12-23

Zn3In2S6/TiO2 Nanocomposites for Highly Efficient Photocathodic Protection to Carbon Steel

Shouwu Xu, Kaili Zhang, Lili Du, Daming Gong, Guiwu Lu, Ping Qiu

ACS Applied Nano Materials· Volume 5· Issue 12
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Source abstract

Abstract

Photocathodic protection has evoked great attention in stainless steel protection; however, it has not been fully studied on carbon steel. This study has prepared a series of TiO2/Zn3In2S6 nanocomposite films by combining anodic oxidation with hydrothermal methods, in which composition and morphology together with optical properties have been characterized. This heterojunction TiO2/Zn3In2S6 has allowed access to visible-light absorbance. Photoelectrochemical tests suggest that this film can supply effective photocathodic protection to carbon steel. The maximum photogenerated potential drop achieved on TiO2/Zn3In2S6-30 coupled to carbon steel is about −0.49 V even after 80 h of illumination, and the corresponding photocurrent is 1.91 mA·cm–2, which is about 5 times higher than that of pure TiO2. This is benefited from the effective photogenerated charge separation by the built-in electric field in the heterojunction. The detailed mechanism has been discussed in the paper.
Source: openalex_inverted_index · Quality: baseline

Research context

Metals & alloysNanomaterials

OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Corrosion Behavior and Inhibition

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Beijing Key Laboratory of Failure, Corrosion and Protection of Oil/Gas Facilities, China University of Petroleum Beijing, Beijing102249, P. R. China

Funding

National Natural Science Foundation of China

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