Visible Light Photocatalytic Degradation of Reactive Deep Blue K-R by BiOI and BiOCl0.2Br0.1I0.7

2012 ◽  
Vol 217-219 ◽  
pp. 1186-1190
Author(s):  
Kai Jin Huang ◽  
Yu Yao Nie ◽  
Yun Liu
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Azo Dye ◽  
Photocatalytic Performance ◽  
Reaction Kinetic ◽  
Order Reaction ◽  
First Order ◽  
Deep Blue ◽  
Visible Light Degradation ◽  
Visible Light Photocatalytic

The visible-light photocatalytic degradation of an azo dye Reactive Deep Blue K-R by BiOI and BiOCl0.2Br0.1I0.7photocatalysts was investigated. When the reaction proceeded for 1 h under the conditions of 15mg/l Reactive Deep Blue K-R solution and PH=3, the visible-light degradation degrees of Reactive Deep Blue K-R were 93% and 52% for BiOCl0.2Br0.1I0.7and BiOI, respectively.Moreover, the photodegradation of Reactive Deep Blue K-R by BiOI and BiOCl0.2Br0.1I0.7followed a first-order reaction kinetic and the values of k for BiOI and BiOCl0.2Br0.1I0.7are 0.911h-1 and 1.981h-1, respectively. BiOCl0.2Br0.1I0.7exhibits better visible-light-responsive photocatalytic performance for photodegradation of Reactive Deep Blue K-R than BiOI due to the smaller particle size, the larger specific surface area and the stronger redox potential of BiOCl0.2Br0.1I0.7.

A PW12/Bi2WO6 composite photocatalyst for enhanced visible light photocatalytic degradation of organic dye pollutants

2019 ◽  
Vol 43 (8) ◽  
pp. 3469-3475 ◽  
Author(s):  
Gang Liu ◽  
Yuzhuo Zhang ◽  
Lin Xu ◽  
Bingbing Xu ◽  
Fengyan Li
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Photocatalytic Performance ◽  
Organic Dye ◽  
Composite Photocatalyst ◽  
Dye Pollutants ◽  
Visible Light Photocatalytic

Bi2WO6 and polyoxometalate nanocomposites exhibited superior photocatalytic performance for degradation of organic dye rhodamine B under visible light.

Electronic band structure and visible-light photocatalytic activity of Bi2WO6: elucidating the effect of lutetium doping

RSC Advances ◽  
2016 ◽  
Vol 6 (103) ◽  
pp. 101105-101114 ◽  
Author(s):  
H. Ait Ahsaine ◽  
A. El jaouhari ◽  
A. Slassi ◽  
M. Ezahri ◽  
A. Benlhachemi ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Band Structure ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Photocatalytic Performance ◽  
Electronic Band Structure ◽  
Active Species ◽  
Electronic Band ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

BWO and Lu-BWO were synthesized by coprecipitation method. Lu-BWO sample exhibits the highest visible-light-responsive photocatalytic performance for the degradation of MB. h+ and ˙O2− are the main active species in the photocatalytic degradation.

Novel p–n heterojunction BiOI/CeO2 photocatalyst for wider spectrum visible-light photocatalytic degradation of refractory pollutants

2017 ◽  
Vol 46 (15) ◽  
pp. 4982-4993 ◽  
Author(s):  
Xiao-Ju Wen ◽  
Cheng-Gang Niu ◽  
Lei Zhang ◽  
Guang-Ming Zeng
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Photocatalytic Performance ◽  
Precipitation Method ◽  
Carrier Separation ◽  
Visible Light Photocatalytic

A novel BiOI/CeO2 photocatalyst with high photocatalytic performance was successfully synthesized via a facile in situ precipitation method. The enhanced photocatalytic performance is ascribed to the formation of a p–n junction, which promotes carrier separation.

scholarly journals Construction of Ag3PO4/SnO2 Heterojunction on Carbon Cloth with Enhanced Visible Light Photocatalytic Degradation

2020 ◽  
Vol 10 (9) ◽  
pp. 3238
Author(s):  
Min Liu ◽  
Guangxin Wang ◽  
Panpan Xu ◽  
Yanfeng Zhu ◽  
Wuhui Li
Keyword(s):  
Visible Light ◽  
Photocatalytic Performance ◽  
Separation Efficiency ◽  
Photogenerated Electron ◽  
Carbon Cloth ◽  
Electron Hole ◽  
Step Process ◽  
Photogenerated Electrons ◽  
Rapid Transfer ◽  
Visible Light Photocatalytic

In this study, the Ag3PO4/SnO2 heterojunction on carbon cloth (Ag3PO4/SnO2/CC) was successfully fabricated via a facile two-step process. The results showed that the Ag3PO4/SnO2/CC heterojunction exhibited a remarkable photocatalytic performance for the degradation of Rhodamine B (RhB) and methylene blue (MB), under visible light irradiation. The calculated k values for the degradation of RhB and MB over Ag3PO4/SnO2/CC are 0.04716 min−1 and 0.04916 min−1, which are higher than those calculated for the reactions over Ag3PO4/SnO2, Ag3PO4/CC and SnO2/CC, respectively. The enhanced photocatalytic activity could mainly be attributed to the improved separation efficiency of photogenerated electron-hole pairs, after the formation of the Ag3PO4/SnO2/CC heterojunction. Moreover, carbon cloth with a large specific surface area and excellent conductivity was used as the substrate, which helped to increase the contact area of dye solution with photocatalysts and the rapid transfer of photogenerated electrons. Notably, when compared with the powder catalyst, the catalysts supported on carbon cloth are easier to quickly recycle from the pollutant solution, thereby reducing the probability of recontamination.

scholarly journals Enhanced Visible-Light Photocatalytic Performance of SAPO-5-Based g-C3N4 Composite for Rhodamine B (RhB) Degradation

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3948
Author(s):  
Lingfang Qiu ◽  
Zhiwei Zhou ◽  
Mengfan Ma ◽  
Ping Li ◽  
Jinyong Lu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Redox Reactions ◽  
Photocatalytic Performance ◽  
Dye Degradation ◽  
Thermal Polymerization ◽  
Light Illumination ◽  
Electron Hole ◽  
Visible Light Illumination ◽  
Visible Light Photocatalytic

Novel visible-light responded aluminosilicophosphate-5 (SAPO-5)/g-C3N4 composite has been easily constructed by thermal polymerization for the mixture of SAPO-5, NH4Cl, and dicyandiamide. The photocatalytic activity of SAPO-5/g-C3N4 is evaluated by degrading RhB (30 mg/L) under visible light illumination (λ > 420 nm). The effects of SAPO-5 incorporation proportion and initial RhB concentration on the photocatalytic performance have been discussed in detail. The optimized SAPO-5/g-C3N4 composite shows promising degradation efficiency which is 40.6% higher than that of pure g-C3N4. The degradation rate improves from 0.007 min−1 to 0.022 min−1, which is a comparable photocatalytic performance compared with other g-C3N4-based heterojunctions for dye degradation. The migration of photo-induced electrons from g-C3N4 to the Al site of SAPO-5 should promote the photo-induced electron-hole pairs separation rate of g-C3N4 efficiently. Furthermore, the redox reactions for RhB degradation occur on the photo-induced holes in the g-C3N4 and Al sites in SAPO-5, respectively. This achievement not only improves the photocatalytic activity of g-C3N4 efficiently, but also broadens the application of SAPOs in the photocatalytic field.

scholarly journals Fabrication of AgCl/Ag3PO4/graphitic carbon nitride heterojunctions for enhanced visible light photocatalytic decomposition of methylene blue, methylparaben and E. coli

RSC Advances ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 6383-6394 ◽  
Author(s):  
Haishuai Li ◽  
Linlin Cai ◽  
Xin Wang ◽  
Huixian Shi
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Visible Light Irradiation ◽  
Carbon Nitride ◽  
Light Irradiation ◽  
Graphitic Carbon Nitride ◽  
Photocatalytic Decomposition ◽  
E Coli ◽  
Visible Light Photocatalytic

A noval ternary nanocomposite AgCl/Ag3PO4/g-C3N4 was successfully synthesized for photocatalytic degradation of methylene blue, methylparaben and inactivation of E. coli under visible light irradiation, showing excellent photocatalytic degradation performance and stability.

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