Interfacial engineering of a plasmonic Bi/Bi2O3/BaTiO3 S-scheme heterojunction for high-performance photocatalytic degradation dyes

IF 6 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2026-10-01 Epub Date: 2026-07-27 DOI:10.1016/j.ceramint.2026.07.478

Dandan Yang, Huachang Zhang, Yanhua Chen, Guijie Li, Ning Zhang, Lan Ding, Jie Ding

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引用次数: 0

Abstract

In this study, a Bi/Bi₂O₃/BaTiO₃ (Bi/BO/BT) nanocomposite with surface plasmon resonance (SPR) effect was successfully fabricated by partially reducing Bi³⁺ in the S-scheme Bi₂O₃/BaTiO₃ (BO/BT) heterojunction to metallic Bi, thereby achieving enhanced visible light absorption and utilization efficiency. Under simulated light irradiation for 60 min, the optimized Bi/BO/BT nanocomposite achieved a photocatalytic degradation rate of 93% for the refractory dye methyl orange (MO), with a photocatalytic rate constant as high as 0.04466 min⁻¹. This rate constant was 38.8, 11.4, 1.8 and 1.8 times higher than those of BT, BO, BO/BT, and commercial P25, respectively. The enhanced photocatalytic activity is attributed to the synergistic effect of Bi SPR and the S-scheme heterojunction, which boosts visible light absorption and preserves high-redox carriers. Liquid chromatography-mass spectrometry (LC/MS) analysis reveals that the degradation of MO by the Bi/BO/BT nanocomposite primarily proceeds through demethylation, ring opening, and mineralization processes. This study offers a new strategy for using non-precious Bi as a plasmonic component to significantly enhance photocatalysis.

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用于高性能光催化降解染料的等离子体Bi/Bi2O3/BaTiO3 S-scheme异质结的界面工程

本研究通过将S-scheme Bi2O3/BaTiO3 （BO/BT）异质结中的Bi3+部分还原为金属Bi，成功制备了具有表面等离子体共振（SPR）效应的Bi/Bi2O3/BaTiO3 （Bi/BO/BT）纳米复合材料，从而提高了可见光吸收和利用效率。在60 min的模拟光照射下，优化后的Bi/BO/BT纳米复合材料对难降解染料甲基橙（MO）的光催化降解率达到93%，光催化速率常数高达0.04466 min−1。该速率常数分别是BT、BO、BO/BT和商用P25的38.8倍、11.4倍、1.8倍和1.8倍。增强的光催化活性归因于Bi SPR和s型异质结的协同作用，增强了可见光吸收并保留了高氧化还原载流子。液相色谱-质谱（LC/MS）分析表明，Bi/BO/BT纳米复合材料对MO的降解主要通过去甲基化、开环和矿化过程进行。该研究为利用非贵金属铋作为等离子体组分显著增强光催化提供了一种新的策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.