Visible light assisted improved photocatalytic activity of combustion synthesized spongy-ZnO towards dye degradation and bacterial inactivation

RSC Advances ◽  
2016 ◽  
Vol 6 (83) ◽  
pp. 80086-80098 ◽  
Author(s):  
Sangeeta Adhikari ◽  
Rimzhim Gupta ◽  
Angelica Surin ◽  
T. Satish Kumar ◽  
Subhabrata Chakraborty ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Catalytic Activity ◽  
Citric Acid ◽  
Visible Light ◽  
Dye Degradation ◽  
High Catalytic Activity ◽  
Bacterial Inactivation

Citric acid combusted spongy-ZnO nanopowders exhibit high catalytic activity for dye degradation and bacterial inactivation.

scholarly journals Effect of heat treatment under vacuum on structure and visible-light photocatalytic activity of nano-TiO2

RSC Advances ◽  
2019 ◽  
Vol 9 (56) ◽  
pp. 32691-32698
Author(s):  
Zhengyuan Gao ◽  
Pengfei Sun ◽  
Yiliu Fang ◽  
Chuanqiang Li ◽  
Xiaoya Yuan ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Photocatalytic Activity ◽  
Catalytic Activity ◽  
Visible Light ◽  
High Catalytic Activity ◽  
Nano Tio2 ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

Nano-TiO2 is known as a photocatalyst with high catalytic activity.

scholarly journals Fabrication, characterization and high photocatalytic activity of Ag–ZnO heterojunctions under UV-visible light

RSC Advances ◽  
2021 ◽  
Vol 11 (44) ◽  
pp. 27257-27266
Author(s):  
Xiaodong Zhu ◽  
Juan Wang ◽  
Daixiong Yang ◽  
Jiawei Liu ◽  
Lili He ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Catalytic Activity ◽  
Visible Light ◽  
High Photocatalytic Activity ◽  
High Catalytic Activity ◽  
Uv Visible

Ag–ZnO heterojunction promotes the separation of photogenerated pairs and thus exhibits high catalytic activity under UV-visible light.

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.

Photocatalytic Degradation of Methylene Blue over Co-Ag3VO4 under Visible Light Irradiation

2011 ◽  
Vol 335-336 ◽  
pp. 1385-1390 ◽  
Author(s):  
Shuo Wiei Zhao ◽  
Hui Xu ◽  
Hua Ming Li ◽  
Yuan Guo Xu
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Absorption Edge ◽  
Diffuse Reflectance Spectroscopy ◽  
Dye Degradation ◽  
Light Irradiation ◽  
Experimental Conditions ◽  
X Ray

In order to improve the photocatalytic activity, Co was successfully loaded into Ag3VO4 by using impregnation process. The samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS) and diffuse reflectance spectroscopy (DRS). The XRD and SEM–EDS analyses revealed that Co ion was dispersed on Ag3VO4. The DRS results indicated that the absorption edge of the Co–Ag3VO4 catalyst shifted to longer wavelength. The enhanced photocatalytic activity of Co–Ag3VO4 for Methylene Blue(MB) dye degradation under visible light irradiation was due to its wider absorption edge and higher separation rate of photo-generated electron and holes. In the experimental conditions, it is demonstrated that the MB was effectively degraded by more than 95% within 40 min when the Co–Ag3VO4 catalyst was calcined at 300°C with 1 wt.% Co content.

Enhanced photocatalytic performance of BiOBr/NH2-MIL-125(Ti) composite for dye degradation under visible light

2016 ◽  
Vol 45 (43) ◽  
pp. 17521-17529 ◽  
Author(s):  
Shuai-Ru Zhu ◽  
Peng-Fei Liu ◽  
Meng-Ke Wu ◽  
Wen-Na Zhao ◽  
Guo-Chang Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
Dye Degradation ◽  
Composite Photocatalysts

BiOBr/NH2-MIL-125(Ti) composite photocatalysts have been prepared by incorporating NH2-MIL-125(Ti) with BiOBr and exhibited improved photocatalytic activity under visible light compared to pristine BiOBr and NH2-MIL-125(Ti).

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