Self-Supported MXene V4C3-Derived VO2 Thermochromic Smart Window Materials: In Situ Synthesis and Performance Enhancement

IF 3.2 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Crystal Growth & Design Pub Date : 2025-05-02 DOI:10.1021/acs.cgd.5c0010710.1021/acs.cgd.5c00107

Jiayi Tian, Peng Liu, Yahao Zhao, Wei Zheng, Gen Li, Changchun Han*, Wen Liu, Qing Li, Zhijie Den, Xinguo Ma, Furong Ye and Yizhong Huang*,

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引用次数: 0

Abstract

Vanadium dioxide (VO₂) is a promising material for smart windows due to its metal–insulator transition that enables dynamic solar transmittance modulation. In this study, VO₂ (M) nanoparticles were synthesized using a novel approach involving the self-supported structure of V₄C₃ MXene derived from V₄AlC₃. Through selective etching, solvothermal oxidation and annealing, VO₂ (M) nanoparticles with enhanced thermochromic properties were produced. The self-supported structure of V₄C₃ MXene significantly reduced particle agglomeration and improved crystallinity, resulting in VO₂ (M) films with a luminous transmittance (T_lum) of up to 58.3% and a solar modulation ability (ΔT_sol) of 6.3%. The study also demonstrated that film thickness and hydrogen peroxide concentration critically influence optical and thermochromic performance. This study provides a new approach for the preparation of MXene-based VO₂ thermochromic smart window materials and is expected to promote their application in the field of building energy conservation.

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自支撑MXene v4c3衍生VO2热致变色智能窗口材料：原位合成和性能增强

二氧化钒（VO2）是一种很有前途的智能窗户材料，因为它的金属-绝缘体过渡可以实现动态的太阳透射率调制。在本研究中，利用V4AlC3衍生的V4C3 MXene的自支撑结构合成了VO2 (M)纳米颗粒。通过选择性蚀刻、溶剂热氧化和退火制备了具有增强热致变色性能的纳米VO2 (M)。V4C3 MXene的自支撑结构显著减少了颗粒团聚，提高了结晶度，使VO2 (M)薄膜的透光率（Tlum）高达58.3%，太阳调制能力（ΔTsol）为6.3%。研究还表明，薄膜厚度和过氧化氢浓度对光学和热致变色性能有重要影响。本研究为基于mxen2的VO2热致变色智能窗材料的制备提供了新的途径，有望促进其在建筑节能领域的应用。

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

Crystal Growth & Design 化学-材料科学：综合

CiteScore

6.30

自引率

10.50%

发文量

650

审稿时长

1.9 months

期刊介绍： The aim of Crystal Growth & Design is to stimulate crossfertilization of knowledge among scientists and engineers working in the fields of crystal growth, crystal engineering, and the industrial application of crystalline materials. Crystal Growth & Design publishes theoretical and experimental studies of the physical, chemical, and biological phenomena and processes related to the design, growth, and application of crystalline materials. Synergistic approaches originating from different disciplines and technologies and integrating the fields of crystal growth, crystal engineering, intermolecular interactions, and industrial application are encouraged.