Fluorine-free super-hydrophobic barium sulfate particles for passive daytime radiative cooling

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-04-09 DOI:10.1016/j.matlet.2025.138560

Guimin Chen , Zhiheng Zheng , Ping Zhang

引用次数: 0

Abstract

To enhance the application of barium sulfate (BaSO₄) particles in passive daytime radiative cooling (PDRC), we developed a simple fluorine-free hydrophobic modification method for BaSO₄ particles using hexadecyl trimethoxy silane (HDTMS) under mild conditions. The modified BaSO₄ (M−BaSO₄) particles exhibited super-hydrophobicity with a water contact angle (WCA) of 165.6

^{°}

and enhanced dispersibility. M−BaSO₄ particles showed negligible changes in spectral properties compared to BaSO₄ particles, maintaining their suitability for PDRC. Furthermore, HDTMS exhibited the potential to hydrophobically modify both BaSO₄ and SiO₂ particles simultaneously. This work provides a promising fluorine-free hydrophobic modification strategy to broaden the applications of BaSO₄ particles in PDRC.

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无氟超疏水硫酸钡颗粒，用于被动日间辐射冷却

为了提高硫酸钡（BaSO4）颗粒在被动日间辐射冷却（PDRC）中的应用，在温和条件下，采用十六烷基三甲氧基硅烷（HDTMS）对BaSO4颗粒进行了简单的无氟疏水改性。改性后的BaSO4 （M−BaSO4）颗粒表现出超疏水性，水接触角（WCA）达到165.6°，分散性增强。与BaSO4粒子相比，M−BaSO4粒子的光谱性质变化可以忽略不计，保持了它们对PDRC的适用性。此外，HDTMS还显示出同时对BaSO4和SiO2粒子进行疏水修饰的潜力。本研究为拓宽BaSO4颗粒在PDRC中的应用提供了一种有前途的无氟疏水改性策略。

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

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive