梁聪杰,刘高鹏,李利娜,付有,马健,李小珊,王崇太,华英杰*.PW11Mn/有机陶瓷膜的制备及可见光催化性能[J].海南师范大学学报自科版,2020,33(3):249-254 |
PW11Mn/有机陶瓷膜的制备及可见光催化性能 |
Preparation and Visible Photocatalytic Performance ofPW11Mn/Organic Ceramic Films |
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DOI:10.12051/j.issn.1674-4942.2020.03.002 |
中文关键词: Keggin型锰取代杂多阴离子 甲基三甲氧基硅烷 有机陶瓷 溶胶-凝胶提拉法 |
英文关键词: Keggin-type Mn-substituted heteropolyanions methyl trimethoxysilane organic ceramic the sol-gel method |
基金项目:海南省社会发展专项(ZDYF2017083);海南省研究生创新科研课题(Hys2019-271) |
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中文摘要: |
高级氧化法产生的具有强氧化性的·OH、·O2
-等可以把水体中有害的有机物大分子
氧化成CO2、H2O 等小分子物质。以甲基三甲氧基硅烷为有机陶瓷的前驱体,以Keggin 型锰取代杂
多阴离子PW11O39Mn(II)(H2O)5-[PW11Mn]为可见光活性组分,采用溶胶-凝胶法制备PW11Mn/有机
陶瓷膜光催化剂,并进行了IR、UV-Vis DRS 以及SEM 等表征。通过高级氧化法对罗丹明B(RhB)
的光降解反应来评估其光催化活性,同时探究了PW11Mn 负载量、煅烧温度对PW11Mn/有机陶瓷膜
光催化性能的影响。实验得出,100 ℃时煅烧的PW11Mn 负载量为2.0 g 的PW11Mn/有机陶瓷膜对罗
丹明B 降解效果最佳。 |
英文摘要: |
Advanced oxidation can produce strong oxidizing ·OH, ·O2-, etc. They can make harmful organisms turn into
small molecules like H2O and CO2, etc. Using methyl trimethoxysilane as the precursor of organic ceramic and the Keggin
type Mn-substituted heteropolyanion PW11O39Mn (II) (H2O) 4-[PW11Mn] as the visible light active component. PW11Mn /or⁃
ganic ceramic films photo-catalyst was prepared via the sol-gel method. And it was characterized using UV-Vis DRS, IR
and SEM, etc. The visible photo-catalytic activity of PW11Mn /organic ceramic films was assessed using Rhodamine B
(RhB) by advanced oxidation. And the effects of the roasting temperature and the PW11Mn dosage on the catalytic activity
were also studied. Through experiments, it was concluded that the degradation of RhB has the best effect when the dosage
of PW11Mn is 2 g and calcination temperature is 100 ℃. |
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