Chemical Industry and Engineering Progress ›› 2025, Vol. 44 ›› Issue (2): 887-898.DOI: 10.16085/j.issn.1000-6613.2024-0248

• Industrial catalysis • Previous Articles     Next Articles

Degradation of bisphenol A by N-TiO2/MoS2/N-TiO2 immobilized laccase on activated carbon fiber felt

LI Zhangliang1,3,4(), YANG Yuezhu1,3,4, WU Chuantian1,2, LYU Yuancai2   

  1. 1.College of Environmental and Biological Engineering, Putian University, Putian 351100, Fujian, China
    2.College of Environment and Safety Engineering, Fuzhou University, Fuzhou 350108, Fujian, China
    3.Fujian Provincial Key Laboratory of Ecology-Toxicological Effects & Control for Emerging Contaminants, Putian 351100, Fujian, China
    4.Key Laboratory of Ecological Environment and Information Atlas, Fujian Provincial University, Putian 351100, Fujian, China
  • Received:2024-02-01 Revised:2024-05-24 Online:2025-03-10 Published:2025-02-25
  • Contact: LI Zhangliang

活性炭纤维毡负载N-TiO2/MoS2/N-TiO2固定化漆酶降解双酚A

李章良1,3,4(), 杨月珠1,3,4, 伍传田1,2, 吕源财2   

  1. 1.莆田学院环境与生物工程学院,福建 莆田 351100
    2.福州大学环境与安全工程学院,福建 福州 350108
    3.福建省新污染物生态毒理效应与控制重点实验室,福建 莆田 351100
    4.生态环境及其信息图谱福建省高等学校重点实验室,福建 莆田 351100
  • 通讯作者: 李章良
  • 作者简介:李章良(1975—),男,硕士,教授,研究方向为污水处理与资源化。E-mail:ptulizhangliang@126.com
  • 基金资助:
    国家自然科学基金(51908132);福建省自然科学基金(2020J01912);莆田学院科研项目(2024036)

Abstract:

N-TiO2/MoS2/N-TiO2 (NT/MS/NT/ACFF) photocatalyst supported by activated carbon fiber felt (ACFF) was prepared by ultrasound assisted hydrothermal method, and used as the carrier of laccase. The NT/MS/NT/ACFF immobilized laccase was then obtained by covalent bonding method. The morphology and microstructure of the catalyst were characterized by means of SEM, XRD, BET, Raman, UV-vis DRS and FTIR. The effects of different systems on the degradation of bisphenol A (BPA). The reaction kinetics, mineralization rate and reusability of NT/MS/NT/ACFF immobilized laccase were studied. The results showed that compared with other systems, NT/MS/NT/ACFF immobilized laccase in visible light had the best degradation rate of BPA (82.5%), the apparent rate constant kobs was 0.00764 min-1, and the mineralization rate was up to 64.5%. NT/MS/NT/ACFF immobilized laccase has good photocatalysis performance, enzyme catalytic activity and stability, and the degradation rate of BPA can still reach 69.4% after 4 cycles. Through GC-MS analysis, we concluded that the catalytic degradation of BPA by NT/MS/NT/ACFF immobilized laccase includes steps of fracture recombination, oxidative decomposition and ring-opening reactions.

Key words: catalyst support, N-TiO2, MoS2, laccase, immobilization, bisphenol A

摘要:

以活性炭纤维毡(ACFF)为基底,采用水热法与超声法相结合方式制备了活性炭纤维毡负载N-TiO2/MoS2/N-TiO2光催化剂(NT/MS/NT/ACFF),并以此作为载体,通过共价结合法制得NT/MS/NT/ACFF固定化漆酶。利用扫描电子显微镜、X射线衍射仪、比表面积分析、拉曼光谱、紫外-可见分光光度计和傅里叶变换红外光谱等手段对样品的形貌、微观结构进行了表征,研究了不同体系对双酚A(BPA)的降解效果、反应动力学及矿化率,考察了催化剂的重复使用性能。结果表明,与其他体系相比,可见光下NT/MS/NT/ACFF固定化漆酶对BPA降解率高达82.5%,表观速率常数kobs为0.00764min-1,矿化率可达64.5%。NT/MS/NT/ACFF固定化漆酶具有良好的光催化、酶催化的活性及稳定性,循环使用4次后BPA降解率仍可达到69.4%。通过气相色谱-质谱(GC-MS)结果分析,推断BPA被NT/MS/NT/ACFF固定化漆酶的催化降解过程包括断裂重组、氧化分解、开环等反应。

关键词: 催化剂载体, 纳米二氧化钛, 二硫化钼, 漆酶, 固定化, 双酚A

CLC Number: 

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