College of Materials Science and Engineering, Nanjing Forestry University

双酚A(BPA)作为最常用的工业化合物之一,在环境中具有持久性,对人类健康及其他微生物造成威胁,因此,开发双酚A高性能去除剂并了解其作用机制具有重要意义。基于此,采用KOH活化策略制备了松木基多孔碳(PC),利用NaBH4对PC进行表面重构获得性能增强的松木基多孔碳(PC-1)。随后,采用单因素的实验方法考察了在多孔碳/过硫酸盐系统中松木基多孔碳去除BPA的能力及机制。结果表明,与PC相比,PC-1表面的羟基增加,羰基减少,ID1/IG从1.55增至1.60。与PC/PDS系统相比,PC-1/PDS系统在反应温度为25、35及45℃时对BPA的降解效率分别提高了45%、18%和64%。淬火及电化学实验说明PC及PC-1分别通过自由基及非自由基途径去除BPA。因此,碳的内在缺陷是过硫酸盐活化的活性位点,而含氧官能团则是影响活化途径的关键因素。

Bisphenol A(BPA), one kind of the most widely-used industrial compounds, is persistent in the environment and poses threat to human health and other microorganisms. Consequently, it is of great significance in developing high-performance removers and understanding their action mechanisms. Based on this, this work used as-prepared pine-based porous carbon (PC) using KOH activation and surface reconstruction for PC using NaBH4 to obtain pine - based porous carbon with enhanced properties (PC-1). Subsequently, a single-factor experimental was used to investigate the ability and mechanism of bisphenol A removal by PC and PC-1 in the persulfate system. Compared to PC, PC-1 exhibited an increase in surface hydroxyl groups, a decrease in carbonyl groups, and an increase in the value of ID1 / IG from 1. 55 to 1. 60. Compared with the PC / PDS system, the PC - 1 / PDS system improved the degradation efficiency of BPA by 45%, 18%, and 64% at 25, 35, and 45 ℃, respec tively. Additionally, quenching and electrochemical experiments illustrated the removal of BPA by PC and PC-1 via radical and non-radical pathways, respectively. The intrinsic defects of carbon were the active sites for persulfate activation, while oxygen-containing functional groups were the key factors in fluencing the activation pathway.

国家自然科学基金资助项目(52076112);江苏省研究生科研与实践创新计划资助项目(KYCX23_1185)

王亮才,陈登宇,周建斌.松木基多孔碳表面重构强化过硫酸盐去除双酚A[J].能源环境保护,2024,38(2):145-154.

WANG Liangcai, CHEN Dengyu, ZHOU Jianbin. Surface reconfiguration of pine-based porous carbon enhancedpersulfate for removing bisphenol A[J]. Energy Environmental Protection, 2024, 38(2): 145-154.