以PEG为模板剂制备Bi_2O_2CO_3及其可见光光催化性能
Preparation and photocatalytic properties of PEG-Bi_2O_2CO_3 under visible light irradiation
查看参考文献20篇
|
文摘
|
以聚乙二醇-6000(PEG-6000)为模板剂水热法制备碳酸氧铋(p-Bi_2O_2CO_3)粉末,采用X射线衍射(XRD)、扫描电镜(SEM)、X射线光电子能谱(XPS)、透射电子显微镜(TEM)和紫外可见漫反射(DRS)对粉末进行了初步表征。在可见光(λ≥420 nm)照射下,以罗丹明B(RhB)和水杨酸(SA)光催化降解实验为探针反应,实验结果表明,p-Bi_2O_2CO_3具有较高的光催化活性,对RhB和SA有较好的降解效果。通过紫外-可见光谱(UV-Vis)、红外光谱(IR)和测定总有机碳(TOC)含量,光催化反应35 h后RhB的矿化率为77%,同时对SA的降解率达到43%。同时,采用N,N-二乙基对苯二胺(DPD)分光光度法和对苯二甲酸荧光光度法分别测定了降解过程中H_2O_2和羟基自由基(? OH)的变化,表明p-Bi_2O_2CO_3/Vis光催化降解机理涉及到? OH历程。 |
|
其他语种文摘
|
Bismuthyl carbonate (p-Bi_2O_2CO_3) powders were synthesized by hydro-thermal method using polyethylene glycol-6000 (PEG-6000) as the template. X-ray diffraction (XRD),scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS),transmission electron microscopy (TEM) and UV-visible diffuse reflectance (DRS) were employed to characterize the powders. Under visible light (λ ≥420 nm) irradiation,the degradation of rhodamine B (RhB) and salicylic acid (SA) were used as probe reactions to investigate the catalytic performance of Bi_2O_2CO_3 modified by PEG-6000 (p-Bi_2O_2CO_3). By analyzing the results of ultravi-olet-visible spectroscopy (UV-Vis),infrared spectroscopy (IR) and total organic carbon (TOC),the mineralization rate of RhB was 77% and the degradation rate of SA reached 43%. In addition, the concentration of hydrogen peroxide (H_2O_2) and hydroxyl radical (? OH) were determined by the N, N-diethyl-p-phenylenediamine (DPD) method and the fluorescence method,respectively,and the results demonstrated that the degradation of organic pollutants by p-Bi_2O_2CO_3 under visible light illumination was dominated by ? OH generated in the system. |
|
来源
|
环境工程学报
,2014,8(4):1297-1304 【核心库】
|
|
关键词
|
碳酸氧铋
;
聚乙二醇-6000
;
光催化
|
|
地址
|
1.
中国科学院水生生物研究所, 武汉, 430072
2.
三峡大学三峡地区地质灾害与生态环境湖北省协同创新中心, 宜昌, 443002
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1673-9108 |
|
学科
|
化学 |
|
基金
|
国家自然科学基金资助项目
;
湖北省新世纪高层次人才入选人员优先资助项目
|
|
文献收藏号
|
CSCD:5107182
|
参考文献 共
20
共1页
|
|
1.
Nakata K. TiO_2 photocatalysis: Design and applications.
J. Photochem. Photobiol. C: Photochem. Rev,2012,13(3):169-189
|
被引
129
次
|
|
|
|
|
2.
方艳芬. 掺氮TiO_2可见光降解有机污染物的比较研究.
化学学报,2007,65(12):2693-2700
|
被引
17
次
|
|
|
|
|
3.
姜晓阳. 掺铋纳米TiO_2制备及可见光催化降解有机污染物.
太阳能学报,2010,31(3):291-296
|
被引
2
次
|
|
|
|
|
4.
郑云. 铕掺杂TiO_2的制备及其可见光光催化性能研究.
影像科学与光化学,2012,31(1):60-70
|
被引
2
次
|
|
|
|
|
5.
陈伟. 外负载Ce-TiO_2/活性炭复合体对亚甲基蓝光催化.
环境工程学报,2012,6(6):1895-1900
|
被引
4
次
|
|
|
|
|
6.
王文中. 含铋复合氧化物可见光催化材料研究进展.
无机材料学报,2012,27(1):11-18
|
被引
11
次
|
|
|
|
|
7.
Liu Z K. The application of bismuth-based oxides in organic-inorganic hybrid photovoltaic devices.
J. Am. Ceram. Soc,2012,95(6):1944-1948
|
被引
3
次
|
|
|
|
|
8.
李二军. 铋系半导体光催化材料.
化学进展,2010,22(12):2282-2289
|
被引
29
次
|
|
|
|
|
9.
张立眉. 微波辐射Bi_2O_3/沸石-H_2O_2体系降解废水中的硝基苯.
环境工程学报,2010,4(2):365-372
|
被引
2
次
|
|
|
|
|
10.
陈渊. 新型可见光催化剂BiVO_4降解中成药制药废水.
环境工程学报,2012,6(3):913-921
|
被引
4
次
|
|
|
|
|
11.
Zheng Y. Synthetic Bi_2O_2 CO_3 nanostructures: novel photocatalyst with controlled special surface exposed.
J. Mol. Catal. A: Chem,2010,317(1/2):34-40
|
被引
20
次
|
|
|
|
|
12.
Chen R. Fabrication of bismuth subcarbonate nanotube arrays from bismuth citrate.
Chem. Commun,2006,21:2265-2267
|
被引
11
次
|
|
|
|
|
13.
Grice J D. A solution to the crystal structures of bismutite and beyerite.
Can. Mineral,2002,40(2):693-698
|
被引
5
次
|
|
|
|
|
14.
解修强. 表面活性剂在纳米材料合成中的应用.
纳米材料与结构,2008,45(8):453-457
|
被引
2
次
|
|
|
|
|
15.
王维. PEG对沉淀法制备纳米MgO形貌的影响.
人工晶体学报,2007,36(6):1399-1402
|
被引
6
次
|
|
|
|
|
16.
Ishibashi K. Detection of active oxidative species in TiO_2 photo-catalysis using the fluorescence technique.
Electrochem. Commun,2000,2(3):207-210
|
被引
65
次
|
|
|
|
|
17.
Bader H. Photometric method for the determination of low concentrations of hydrogen peroxide by the peroxidase catalyzed oxidation of N,N-diethyl-p-phenylenediamine (DPD).
Water Res,1988,22(9):1109-1115
|
被引
60
次
|
|
|
|
|
18.
Wang S L. Degradation of pollutants by hydrophobic FePcCl_(16) under ultraviolet and visible light.
Fresenius Environ. Bull,2013,22(2a):549-555
|
被引
1
次
|
|
|
|
|
19.
卫芝贤. 表面活性剂PEG在掺锑纳米SnO2粉末氧化共沉淀制备中的作用.
过程工程学报,2005,5(3):305-308
|
被引
11
次
|
|
|
|
|
20.
Wu T X. Photoassisted degradation of dye pollutants. V. self-photosensitized oxidative transformation of rhodamine B under visible light irradiation in aqueous TiO_2 dispersions.
J. Phy. Chem. B,1998,102(30):5845-5851
|
被引
56
次
|
|
|
|
|
了解气象卫星更多信息，请访问