Design of a One-Dimensional Zn3In2S6/NiFe2O4 Composite Material and Its Photocathodic Protection Mechanism Against Corrosion

IF 3.4 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Buildings Pub Date : 2025-03-18 DOI:10.3390/buildings15060958

Xiaotong Wang, Yuehua Chen, Xiaoying Zhang

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引用次数: 1

Abstract

Z-scheme Zn3In2S6/NiFe2O4 nanocomposites were prepared by electrospinning and hydrothermal methods, and their photocathodic protection performance was studied on 304 SS and Q235 CS in NaCl solution (3.5 wt.%). The two-dimensional Zn3In2S6 loaded on the one-dimensional NiFe2O4 resulted in faster electron migration and enhanced light absorption capability. Moreover, it had been observed through electrochemical testing that the assembly of Zn3In2S6/NiFe2O4 heterojunctions improves the efficacy of photocathodic protection. Following illumination, the self-corrosion potentials of 304 SS and Q235 CS coupled with Zn3In2S6/NiFe2O4 nanocomposites decreased by 1040 mV and 560 mV, and the photoinduced current densities were 1.2 times and 3.9 times greater than the value of Zn3In2S6. Furthermore, the mechanism of enhanced photocathodic protection performance for Zn3In2S6/NiFe2O4 heterojunctions was systematically discussed. XPS and ESR analysis indicated that Zn3In2S6/NiFe2O4 composites follow the Z-scheme electron migration path and retain the stronger reduction and oxidation capacity of Zn3In2S6/NiFe2O4. Therefore, the Z-scheme heterostructures are responsible for the realization of cathodic protection for carbon steel.

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一维Zn3In2S6/NiFe2O4复合材料的设计及其光电阴极防腐机理

采用静电纺丝和水热法制备了Z-scheme Zn3In2S6/NiFe2O4纳米复合材料，研究了其在3.5 wt.% NaCl溶液中对304 SS和Q235 CS的光电阴极保护性能。将二维Zn3In2S6负载在一维NiFe2O4上，电子迁移速度加快，光吸收能力增强。此外，通过电化学测试发现，Zn3In2S6/NiFe2O4异质结的组装提高了光电阴极保护的效率。光照后，304 SS和Q235 CS与Zn3In2S6/NiFe2O4纳米复合材料的自腐蚀电位分别降低了1040 mV和560 mV，光敏电流密度分别是Zn3In2S6的1.2倍和3.9倍。此外，系统地讨论了提高Zn3In2S6/NiFe2O4异质结光电阴极保护性能的机理。XPS和ESR分析表明，Zn3In2S6/NiFe2O4复合材料遵循Z-scheme电子迁移路径，保留了Zn3In2S6/NiFe2O4较强的还原氧化能力。因此，z型异质结构负责实现碳钢的阴极保护。

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来源期刊

Buildings Multiple-

CiteScore

3.40

自引率

26.30%

发文量

1883

审稿时长

11 weeks

期刊介绍： BUILDINGS content is primarily staff-written and submitted information is evaluated by the editors for its value to the audience. Such information may be used in articles with appropriate attribution to the source. The editorial staff considers information on the following topics: -Issues directed at building owners and facility managers in North America -Issues relevant to existing buildings, including retrofits, maintenance and modernization -Solution-based content, such as tips and tricks -New construction but only with an eye to issues involving maintenance and operation We generally do not review the following topics because these are not relevant to our readers: -Information on the residential market with the exception of multifamily buildings -International news unrelated to the North American market -Real estate market updates or construction updates