Photocatalytic Performance of Bi2O3 Prepared with NH3•H2O under Different pH Value

2012 ◽  
Vol 178-181 ◽  
pp. 641-644 ◽  
Author(s):  
Xi Yang He ◽  
Jian Zhang Li ◽  
Jun Bo Zhong ◽  
Wei Hu
Keyword(s):  
Photocatalytic Activity ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
Ph Value ◽  
Strong Dependence ◽  
Precipitation Method ◽  
Surface Parameters ◽  
Separation Rate ◽  
Photoinduced Charge Separation ◽  
Photoinduced Charge

In this paper, parallel flaw precipitation method has been employed to fabricate nanostructured Bi2O3. It is found that the surface parameters, bandgap, the photoinduced charge separation rate and photocatalytic performance of Bi2O3 have a strong dependence on the pH value of precipitation reaction.The prepared photocatalysts were characterized by BET, XRD, UV-Vis diffuse reflectance and surface photovoltage spectroscopy (SPS). The results show that Bi2O3 prepared under pH value10.0 exhibits the best photocatalytic activity among the experimented compositions. The results of further experiments show that surface parameters, bandgap, the photoinduced charge separation rate all play an important role in promotion of photocatalytic activity of Bi2O3 prepared under pH value 10.0.

Photocatalytic Performance of Co3O4 Prepared with the Assistance of Different Surfactants

2012 ◽  
Vol 549 ◽  
pp. 8-11
Author(s):  
Tao Wang ◽  
Jian Zhang Li ◽  
Shao Hua Wang ◽  
Jun Bo Zhong ◽  
Jun Zeng
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Performance ◽  
Strong Dependence ◽  
Precipitation Method ◽  
Sodium Dodecylbenzenesulfonate ◽  
Surface Parameters ◽  
Sem Image

In this paper, parallel flaw precipitation method has been employed to fabricate nanostructured Co3O4 with the assistance of different surfactants. It is found that the surface parameters, SEM image and photocatalytic performance of Co3O4 have a strong dependence on the type of surfactants. The prepared photocatalysts Co3O4 were characterized by BET, XRD and SEM. The results show that Co3O4 prepared with the assistance of sodium dodecylbenzenesulfonate exhibits the best photocatalytic activity among the experimented compositions. The surface parameters and SEM all play an important role in promotion of photocatalytic activity of Co3O4 prepared.

Photocatalytic Activity of Bi2O3 Prepared by Different pH Value

2011 ◽  
Vol 418-420 ◽  
pp. 554-557 ◽  
Author(s):  
Yan Lu ◽  
Xi Yang He ◽  
Jun Bo Zhong ◽  
Jian Zhang Li ◽  
Wei Hu
Keyword(s):  
Photocatalytic Activity ◽  
Surface Area ◽  
Diffuse Reflectance ◽  
Crystal Size ◽  
Photocatalytic Performance ◽  
Ph Value ◽  
Strong Dependence ◽  
Bet Surface Area ◽  
Precipitation Method ◽  
Average Crystal Size

Abstract. Bismuth oxide is an important metal-oxide semicondutor, the interest in developing methods which can prepare Bi2O3 with unique properties has been a hot issue recently. In this paper, paralled flaw precipitation method has been employed to synthesize nanostructured Bi2O3. It is found that the bandgap and photocatalytic performance of Bi2O3 has a strong dependence on the pH value of precipitation reaction.The prepared photocatalysts were characterized by BET, XRD and UV-Vis diffuse reflectance. The results show that Bi2O3 prepared under pH value 8.5 has the highest BET surface area, pore volume, the smallest pore size and the average crystal size. Bi2O3 prepared under pH value 8.5 exhibits the best photocatalytic activity. The results of further experiments show that bandgap and the specific surface area all play an important role in promotion of photocatalytic activity of Bi2O3 prepared under pH 8.5.

Remarkably enhanced photoinduced charge separation rate of Bi2WO6 by Cu2+ doping

2018 ◽  
Vol 124 (9) ◽  
Author(s):  
Junbo Zhong ◽  
Jiufu Chen ◽  
Qi Yang ◽  
Chuan Hu ◽  
Jianzhang Li ◽  
...  
Keyword(s):  
Charge Separation ◽  
Separation Rate ◽  
Photoinduced Charge Separation ◽  
Photoinduced Charge

Ionic Liquid-Assisted Fabrication of ZnO with Enhanced Photocatalytic Performance

2013 ◽  
Vol 361-363 ◽  
pp. 722-725
Author(s):  
Xing Wen Zheng ◽  
Zheng Hua Xiao ◽  
Jun Bo Zhong ◽  
Wei Hu
Keyword(s):  
Ionic Liquid ◽  
Charge Separation ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Separation Rate ◽  
Surface Photovoltage Spectroscopy ◽  
Photocatalytic Decolorization ◽  
Structure Morphology ◽  
Photoinduced Charge Separation ◽  
Photoinduced Charge

In this paper, ZnO photocatalyst was prepared by sol-gel method with the assistance of ionic liquid (IL). The structure, morphology and the photoinduced charge separation rate of the photocatalyst prepared (IL-ZnO) were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and surface photovoltage spectroscopy (SPS), respectively. The results reveal that ionic liquid enhances the photoinduced charge separation rate. The activity of ZnO for photocatalytic decolorization of methyl orange (MO) solution was evaluated. The results show that the photocatalytic activity of IL-ZnO is higher than that of ZnO.

Photocatalytic Activity of Bi2O3 Prepared by Different Precipitants

2011 ◽  
Vol 239-242 ◽  
pp. 998-1001 ◽  
Author(s):  
Jun Bo Zhong ◽  
Jun Zeng ◽  
Jian Zhang Li ◽  
Wei Hu
Keyword(s):  
Photocatalytic Activity ◽  
Specific Surface ◽  
Surface Area ◽  
Pore Volume ◽  
Diffuse Reflectance ◽  
Photocatalytic Performance ◽  
Strong Dependence ◽  
Bet Surface Area ◽  
Precipitation Method ◽  
Average Size

Paralled flaw precipitation method has been employed to synthesize nanostructured Bi2O3. It is found that the bandgap and photocatalytic performance of Bi2O3 has a strong dependence on the kind of precipitants. The prepared photocatalysts were characterized by BET, XRD, UV-Vis diffuse reflectance and SEM. The results show that Bi2O3 prepared by NH3·H2O has the highest BET surface area, pore volume, the smallest pore size and the particle average size. Bi2O3 prepared by NH3·H2O exhibits the best photocatalytic activity. The results of further experiments show that bandgap and the specific surface area all play an important role in promotion of photocatalytic activity of Bi2O3 prepared by NH3·H2O.

Surface Photoinduced Charge Separation and Photocatalytic Activity of Sn Doped TiO2 Nanoparticles

2005 ◽  
Vol 21 (04) ◽  
pp. 378-382
Author(s):  
JING Li-Qiang ◽  
◽  
◽  
FU Hong-Gang ◽  
WANG De-Jun ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Charge Separation ◽  
Photoinduced Charge Separation ◽  
Photoinduced Charge
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