Reactive species regulation by interlayered Na+/H+ of titanate nanotubes decorated Co(OH)2 hollow microsphere for peroxymonosulfate activation and gatifloxacin degradation
作者:Bin Zhou、Long Chen、Fan Li、Weiliang Sun、Zhicheng Pan、Yumei Peng、Lian Qiu、Wen Liu
DOI:10.1016/j.cclet.2023.108558
日期:2023.12
including sulfate radical (SO4•−) and singlet oxygen (1O2) in this AOP were regulated by interlayered ions (Na+/H+) of titanate nanotubes that supported on Co(OH)2 hollow microsphere. Both the Na-type (NaTi-CoHS) and H-type (HTi-CoHS) materials achieved efficient PMS activation for GAT degradation, and HTi-CoHS even exhibited a relatively high degradation efficiency of 96.6% within 5 min. Co(OH)2 was considered
水中的新兴有机污染物(EOP)由于其高环境风险而备受关注,因此迫切需要有效去除这些污染物的技术。在此,开发了一种通过功能材料活化过一硫酸盐(PMS)的非均相高级氧化工艺(AOP),用于降解典型抗生素加替沙星(GAT)。该AOP中的活性物质包括硫酸根(SO 4 •− )和单线态氧( 1 O 2 )受到Co(OH) 2负载的钛酸盐纳米管的层间离子(Na + /H + )的调节空心微球。Na型(NaTi-CoHS)和H型(HTi-CoHS)材料均实现了对GAT降解的有效PMS激活,HTi-CoHS甚至在5分钟内表现出了96.6%的相对较高的降解效率。Co(OH) 2被认为是PMS活化后生成SO 4 •−的关键成分,而钛酸氢纳米管(H-TNTs)则通过氢键相互作用促进过氧硫酸根(SO 5 •− )转化为1 O 2 。因此,当TNT的层间离子由Na +转变为H +时,更多的1 O 2是为有机污染物降