• 论文
主办单位:煤炭科学研究总院有限公司、中国煤炭学会学术期刊工作委员会
TiO2/g-C3N4水吸收耦合光催化降解异丙醇废气
  • Title

    TiO2 / g-C3N4 water absorption coupled photocatalyticdegradation of isopropanol exhaust gas

  • 作者

    金丽丽王文洁周瑛於建明陈建孟卢晗锋

  • Author

    JIN Lili;WANG Wenjie;ZHOU Ying;YU Jianming;CHEN Jianmeng;LU Hanfeng

  • 单位

    中煤科工集团杭州研究院有限公司浙江工业大学化学工程学院浙江工业大学环境学院

  • Organization
    CCTEG Hangzhou Research Institute Co., Ltd.
    College of ChemicalEngineering, Zhejiang University of Technology
    College of Environment,Zhejiang University of Technology
  • 摘要
    异丙醇作为一种典型的挥发性有机化合物释放到大气中,会对环境和人体健康造成危害,水相吸收和光催化耦合可以实现异丙醇废气的有效治理。 本研究以 TiO2 / g-C3 N4 为催化剂材料,考察了其在气液固三相体系中光催化降解异丙醇的性能。 发现将 TiO2与 g-C3N4复合后,可见光诱导的异丙醇的光催化降解率显著提高,其中负载量为质量分数 40%-TiO2 / g-C3N4在可见光照射 70 min 时得到了 29.3%的最佳降解性能,分别比单一的 TiO2和 g-C3N4的光催化性能高4.24倍和 1.9 倍。 在水吸收耦合光催化剂降解连续净化异丙醇废气中,40%-TiO2 / g-C3N4在可见光光照 180 min 时对异丙醇废气的净化率达到 61.7%,较纯水提高了 10.6%。 经过 5 个周期的实验,净化率保持在 60%以上,表明化学稳定性良好。
  • Abstract
    Isopropanol, as a typical volatile organic compound released into the atmosphere, can causeharm to the environment and human health, and the coupling of aqueous phase absorption and photoca⁃talysis is a useful technical approach for the treatment and degradation of isopropanol waste gas. In thisstudy, TiO2 / g-C3N4 was used as a catalyst material to investigate its photocatalytic degradation per⁃formance of isopropanol in a gas-liquid-solid three-phase system. It was found that the photocatalyticdegradation rate of isopropanol induced by visible light was significantly increased after the combinationof TiO2 and g-C3N4. The optimal degradation performance of 29.3% was achieved when 40%-TiO2 / gC3N4 under visible light irradiation for 70 minutes, which was 4.24 times and 1.9 times higher than thephotocatalytic performance of single TiO2 and g-C3 N4, respectively. In the continuous purification ofisopropanol waste gas by the water absorption coupled photocatalyst degradation, the purification rate ofisopropanol waste gas reached 61.7% after 180 minutes of visible light irradiation using 40%-TiO2 / g-C3N4,which was 10.6% higher than that of pure water. After five cycles of experiments, the purification rateremained above 60%, indicating good chemical stability.
  • 关键词

    VOCs 净化水吸收耦合光催化TiO2g-C3N4异丙醇

  • KeyWords

    VOCs purification; Water absorption coupled photocatalysis; TiO2; g-C3N4; Isopropanol

  • 基金项目(Foundation)
    国家重点研发计划资助项目(2022YFC3702003);浙江省重点研发领雁资助项目(2023C03127)
  • DOI
  • 引用格式
    金丽丽, 王文洁, 周瑛, 等. TiO2 / g-C3N4 水吸收耦合光催化降解异丙醇废气[J]. 能源环境保护, 2023,37(6): 147-155.
  • Citation
    JIN Lili, WANG Wenjie, ZHOU Ying, et al. TiO2 / g-C3N4 water absorption coupled photocatalytic degradation ofisopropanol exhaust gas[J]. Energy Environmental Protection, 2023, 37(6): 147-155.
相关问题

主办单位:煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会

©版权所有2015 煤炭科学研究总院有限公司 地址:北京市朝阳区和平里青年沟东路煤炭大厦 邮编:100013
京ICP备05086979号-16  技术支持:云智互联