原位制备具有电子存储特性的 TiO2/ZIF-67 复合薄膜，显著增强 304 不锈钢的光电阴极保护能力

IF 13.2 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2024-12-16 DOI:10.1016/j.cej.2024.158693

Shouwu Xu, Zhilong Zhang, Hailin Zhang, Zhiwei Li, Haoping Peng, Sibudjing Kawi, Aijun Xie, Ping Qiu

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引用次数: 0

摘要

开发具有电子存储功能的光电化学阴极保护薄膜为在无光条件下保护金属提供了一种可行的方法。在本研究中，我们设计并在原位制备了一种创新的 TiO2/ZIF-67 复合薄膜。合成的 ZIF-67 纳米粒子具有十二面体结构，不仅有利于与电解质接触，还能显著拓宽阳光吸收范围。当与 304 SS 结合使用时，TiO2/ZIF-67-20 复合薄膜在光照下的最低 OCP 值为 -0.675 V（相对于 SCE）。值得注意的是，即使经过 10 小时的光剥夺，OCP 值仍然低于 304 SS。这种持续的保护可归因于 TiO2/ZIF-67 复合材料中 Co 元素的电子存储和释放能力，从而确保 304 SS 在光照和黑暗条件下都能得到持续的阴极保护。这项研究为实现 304 SS 的全天候阴极保护提供了宝贵的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

In-situ fabrication of TiO2/ZIF-67 composite film with electron storage characteristics for significantly enhanced photoelectrochemical cathodic protection of 304 stainless steel

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In-situ fabrication of TiO2/ZIF-67 composite film with electron storage characteristics for significantly enhanced photoelectrochemical cathodic protection of 304 stainless steel

The development of a photoelectrochemical cathodic protection film with electron storage capabilities offers a feasible method for metal protection in the absence of light. In this study, we designed and fabricated an innovative TiO₂/ZIF-67 composite film in situ. The synthesized ZIF-67 nanoparticles with a dodecahedral structure not only facilitate contact with the electrolyte but also significantly broaden the sunlight absorption range. When coupled with 304 SS, the TiO₂/ZIF-67-20 composite film demonstrated a minimum OCP value of −0.675 V (vs. SCE) under illumination. Notably, even after 10 h of light deprivation, the OCP remained lower than that of 304 SS. This sustained protection can be attributed to the electronic storage and release capabilities of the Co element within the TiO₂/ZIF-67 composite, ensuring continuous cathodic protection for 304 SS during both illuminated and dark conditions. This study contributes valuable insights into achieving all-weather cathodic protection for 304 SS.

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.