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硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (3): 1018-1030.DOI: 10.16552/j.cnki.issn1001-1625.2025.1122

• 新型功能化玻璃 • 上一篇    下一篇

SrBiB微晶玻璃制备及其性能调控研究

龚非凡(), 王君, 吴渊, 高盛楠, 王觅堂()   

  1. 上海理工大学材料与化学学院,上海 200093
  • 收稿日期:2025-11-13 修订日期:2026-01-21 出版日期:2026-03-20 发布日期:2026-04-10
  • 通信作者: 王觅堂,博士,教授。E-mail:btwmt@126.com
  • 作者简介:龚非凡(2001—),男,硕士研究生。主要从事稀土多功能材料的研究。E-mail:222203072@st.usst.edu.cn
  • 基金资助:
    国家重点研发计划(2023YFB3507100);内蒙古自治区科技重大专项(2019ZD023);内蒙古自治区科技重大专项(2021ZD0028)

Preparation and Performance Regulation of SrBiB Glass-Ceramics

GONG Feifan(), WANG Jun, WU Yuan, GAO Shengnan, WANG Mitang()   

  1. School of Materials and Chemistry,University of Shanghai for Science and Technology,Shanghai 200093,China
  • Received:2025-11-13 Revised:2026-01-21 Published:2026-03-20 Online:2026-04-10

摘要:

本文系统研究了不同热处理条件下SrO-Bi2O3-B2O3(SrBiB)微晶玻璃及其稀土掺杂上转换体系的光催化性能。结果表明,35SrO-25Bi2O3-40B2O3经两步热处理后在180 min表现出最优的亚甲基蓝(MB)降解效率(93%)与反应速率常数(0.008 63 min-1),这主要归因于其较窄的带隙及玻璃基质中Bi6B10O24晶体的均匀分布。进一步在 SrBiB 微晶玻璃中引入 Yb3+/Tm3+,并通过两步热处理结合 HCl 化学刻蚀,成功构建了具有核壳结构的微晶玻璃。XRD、SEM、TEM 等表征结果表明,刻蚀后样品表面形成片层花状结构,且随着刻蚀时间延长,上转换发光强度逐渐增强,比表面积显著提高。光催化性能测试表明,HCl刻蚀30 min后的样品在全光谱与近红外光照下均表现出最优异的降解性能(210 min 降解率分别为 80%与 63%),这主要得益于其增强的可见-近红外光吸收能力、有效的载流子分离及核壳结构与表面缺陷共同促进的活性位点暴露。本研究为设计具有宽光谱响应的高效上转换光催化剂提供了新思路,并在近红外光驱动的废水处理等领域展现出良好的应用潜力。

关键词: 微晶玻璃, 稀土离子, 光催化, 上转换发光, 两步热处理

Abstract:

This study systematically investigated the photocatalytic performance of SrO-Bi2O3-B2O3 (SrBiB) glass-ceramics and their rare-earth-doped upconversion systems under different heat treatment conditions. The results show that 35SrO-25Bi2O3-40B2O3 after two-step heat treatment exhibit the optimal methylene blue (MB) degradation efficiency (93%) and reaction rate constant (0.008 63 min-1) within 180 min, which is mainly attributed to its smaller band gap and uniform distribution Bi6B10O24 crystals in the glass matrix. Furthermore, Yb3+/Tm3+ is introduced into the SrBiB glass-ceramics, and a core-shell structured glass-ceramics is successfully constructed through two-step heat treatment combined with HCl chemical etching. XRD, SEM, TEM and other characterizations results confirm that a layered flower-like structure formed on the surface of the etched samples, and the upconversion luminescence intensity gradually increase and the specific surface area significantly increase with the extension of etching time. Photocatalytic performance tests show that sample after HCl etching for 30 min display the best degradation performance under both full-spectrum and near-infrared light (degradation rates of 80% and 63% after 210 min, respectively), which is attributed to its enhanced visible-near-infrared light absorption, effective carrier separation, and the exposure of active sites promoted by the combined effects of core-shell structure and surface defects. This study provides a new strategy for the design of efficient upconversion photocatalysts with broad-spectrum response and demonstrates promising application potential in fields such as wastewater treatment driven by near-infrared light.

Key words: glass-ceramics, rare earth ion, photocatalytic, upconversion luminescence, two-step heat treatment

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