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Open AccessArticle

Facile Construction of All-Solid-State Z-Scheme g-C3N4/TiO2 Thin Film for the Efficient Visible-Light Degradation of Organic Pollutant

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College of Materials and Chemistry, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education District, Hangzhou 310018, China
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College of Standardization, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education District, Hangzhou 310018, China
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Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(4), 600; https://doi.org/10.3390/nano10040600 (registering DOI)
Received: 19 February 2020 / Revised: 21 March 2020 / Accepted: 21 March 2020 / Published: 25 March 2020
(This article belongs to the Special Issue Characterization and Preparation of Electrocatalytic Nanomaterials)
The increasing discharge of dyes and antibiotic pollutants in water has brought serious environmental problems. However, it is difficult to remove such pollutants effectively by traditional sewage treatment technologies. Semiconductor photocatalysis is a new environment-friendly technique and is widely used in aqueous pollution control. TiO2 is one of the most investigated photocatalysts; however, it still faces the main drawbacks of a poor visible-light response and a low charge-separation efficiency. Moreover, powder photocatalyst is difficult to be recovered, which is another obstacle limiting the practical application. In this article, g-C3N4/TiO2 heterojunction is simply immobilized on a glass substrate to form an all-solid-state Z-scheme heterojunction. The obtained thin-film photocatalyst was characterized and applied in the visible-light photodegradation of colored rhodamine B and tetracycline hydrochloride. The photocatalytic performance is related to the deposited layers, and the sample with five layers shows the best photocatalytic efficiency. The thin-film photocatalyst is easy to be recovered with stability. The active component responsible for the photodegradation is identified and a Z-scheme mechanism is proposed. View Full-Text
Keywords: thin-film photocatalyst; environmental control; antibiotic residue removal; g-C3N4/TiO2; all-solid-state Z-scheme heterojunction thin-film photocatalyst; environmental control; antibiotic residue removal; g-C3N4/TiO2; all-solid-state Z-scheme heterojunction
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MDPI and ACS Style

Zhao, W.; Yang, X.; Liu, C.; Qian, X.; Wen, Y.; Yang, Q.; Sun, T.; Chang, W.; Liu, X.; Chen, Z. Facile Construction of All-Solid-State Z-Scheme g-C3N4/TiO2 Thin Film for the Efficient Visible-Light Degradation of Organic Pollutant. Nanomaterials 2020, 10, 600.

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