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纳米零价铁活化分子氧原理及降解有机污染物性能增强策略

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成果类型:
期刊论文
作者:
Mu Yi;Jia Falong;Ai Zhihui*;Zhang Lizhi*
通讯作者:
Ai Zhihui;Zhang Lizhi
作者机构:
[Zhang Lizhi; Jia Falong; Ai, ZH; Zhang, LZ; Mu Yi; Ai Zhihui] Cent China Normal Univ, Inst Appl & Environm Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Hubei, Peoples R China.
通讯机构:
[Ai, ZH; Zhang, LZ] C
Cent China Normal Univ, Inst Appl & Environm Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Hubei, Peoples R China.
语种:
中文
关键词:
纳米零价铁;分子氧活化;活性氧物种;高级氧化技术
关键词(英文):
Advanced oxidation technology;Molecular oxygen activation;Nano zero-valent iron;Reactive oxygen species
期刊:
化学学报
ISSN:
0567-7351
年:
2017
卷:
75
期:
6
页码:
538-543
基金类别:
* E-mail: jennifer.ai@mail.ccnu.edu.cn (Zhihui Ai); zhanglz@mail.ccnu.edu.cn (Lizhi Zhang) Received February 10, 2017; published March 29, 2017. Project supported by the National Key Research and Development Program of China (2016YFA0203000), National Natural Science Foundation of China (Nos. 21425728, 21177048, 21173093, 21477044, 51472100), Self-Determined Research Funds of CCNU from the Colleges’ Basic Research and Operation of MOE (Nos. CCNU16A02029, CCNU16A04005), Excellent Doctorial Dissertation Cultivation Grant from Central China Normal University (2015YBZD024 and 2016YBZZ031). 项目受国家重点研发计划纳米科技专项(2016YFA0203000), 国家自然科学基金(Nos. 21425728, 21177048, 21173093, 21477044, 51472100), 中央高校 基本科研业务费专项资金(Nos. CCNU16A02029, CCNU16A04005), 华中师范大学优秀博士学位论文培育计划(2015YBZD024 & 2016YBZZ031)资助.
机构署名:
本校为第一且通讯机构
院系归属:
化学学院
摘要:
纳米零价铁直接还原降解有机污染物运行长效性差,且不能矿化有机污染物.利用纳米零价铁还原活化分子氧生成活性氧物种可以氧化甚至矿化有机污染物.在最近的研究中,作者提出了纳米零价铁活化分子氧的双途径机理,即铁核电子转移到氧化铁壳表面的双电子还原活化分子氧途径和氧化铁表面结合态亚铁离子的单电子还原活化分子氧途径,阐释了纳米零价铁核壳结构依赖的分子氧活化降解有机污染物性能机制及性能增强策略.证实在纳米零价铁活化分子氧体系添加少量亚铁离子能在零价铁表面形成更多的结合态亚铁,显著增强纳米铁表界面活性氧物种生成量;同时,在纳米零价铁活化分子氧体系中引入少量有机或无机配体...
摘要(英文):
Nano zero-valent iron (nZVI) is a special kind of iron with large specific surface area, strong reduction activity, and the environmental friendliness. nZVI was usually used to reductively degrade organic pollutants, but its long-term performance was poor and the organic pollutants could not be mineralized. Nano zero-valent iron can reductively activate molecular oxygen to generate reactive oxygen species for oxidation or even mineralization of organic pollutants. Recently, we found the core-shell structure dependent aerobic degradation of orga...

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