Degradation of Rhodamine B by Visible Light Driven MoO₃@TiO₂ Core-Shell Photocatalyst.

IF 3.7 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2024-11-12 Epub Date: 2024-11-04 DOI:10.1021/acs.langmuir.4c03333

Hejin Liu, Peng Qiao, Ying Liu, Xin Guo, Yanxiu Liu, Hua Song, Xueqin Wang, Wenyi Wang

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Abstract

In this study, a MoO₃@TiO₂ composite core-shell material was developed to remove Rhodamine B (RhB) dye through synergistic adsorption and photocatalytic degradation. n-n heterostructures were formed by coupling n-type semiconductors to enhance the efficiency of photocarrier separation and photocatalytic performance. MoO₃, which possesses strong adsorption capacity, was primarily used as a dye adsorbent. Additionally, the formation of an n-n heterojunction with TiO₂ enabled MoO₃ to expand the photocorresponding range of TiO₂, leading to the generation of superoxide (O₂^•) and hydroxyl (^•OH) free radicals for dye degradation. The experimental results demonstrate that the MoO₃@TiO₂ core-shell composite exhibits excellent performance for RhB dye removal, with adsorption and degradation rates reaching 35.7 and 70.3%, respectively, even at low catalyst concentrations. This approach offers new insights into the development of MoO₃ core-shell photocatalysts.

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可见光驱动的 MoO3@TiO2 核壳光催化剂降解罗丹明 B。

本研究开发了一种 MoO3@TiO2 复合核壳材料，通过协同吸附和光催化降解作用去除罗丹明 B（RhB）染料。通过耦合 n 型半导体形成 n-n 异质结构，提高了光载体分离效率和光催化性能。MoO3 具有很强的吸附能力，主要用作染料吸附剂。此外，与 TiO2 形成 n-n 异质结使 MoO3 能够扩大 TiO2 的光响应范围，从而产生超氧化物（O2-）和羟基（-OH）自由基降解染料。实验结果表明，MoO3@TiO2 核壳复合材料在去除 RhB 染料方面表现优异，即使在催化剂浓度较低的情况下，吸附率和降解率也分别达到了 35.7% 和 70.3%。这种方法为开发 MoO3 核壳光催化剂提供了新的思路。

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

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).