scholarly journals Direct Z-scheme GdFeO3/g-C3N4 heterostructures with outstanding photocatalytic activity

2021 ◽  
Author(s):  
Li Li ◽  
Fengwu Wang ◽  
Jiajun Feng ◽  
Siqi Guo ◽  
Mai Xu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Organic Pollutants ◽  
Recombination Rate ◽  
Catalytic Properties ◽  
Photocatalytic Property ◽  
Practical Applications ◽  
Ultrasonic Synthesis ◽  
Visible Light Driven ◽  
The Stability ◽  
Synthesis Approach

Abstract The direct Z-scheme GdFeO3/g-C3N4 photocatalysts used without any mediators were obtained using an ultrasonic synthesis approach. The composites’ structures, elemental composition and morphologies, as well as optical, electrochemical and catalytic properties, were thoroughly analyzed. GdFeO3/g-C3N4-3:7 composite exhibited an excellent enhanced light-harvesting ability and low recombination rate, which manifested into an outstanding visible-light driven activity, 7.7 and 2.3 times more than of stand-alone g-C3N4 and GdFeO3, respectively. A mechanism responsible for the photocatalytic property enhancement was proposed. The stability and reusability of the GdFeO3/g-C3N4 composites make them excellent materials for practical applications related to the removal of organic pollutants from the wastewater.

scholarly journals Natural microbial polysaccharides as effective factors for modification of the catalytic properties of fungal cellobiose dehydrogenase

2021 ◽  
Author(s):  
Justyna Sulej ◽  
Magdalena Jaszek ◽  
Monika Osińska-Jaroszuk ◽  
Anna Matuszewska ◽  
Renata Bancerz ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Cellobiose Dehydrogenase ◽  
Pycnoporus Sanguineus ◽  
Practical Applications ◽  
Control Value ◽  
Electrochemical Parameters ◽  
Optimum Ph ◽  
Stabilization Effect ◽  
Fungal Polysaccharides ◽  
The Stability

AbstractPolysaccharides are biopolymers composed of simple sugars like glucose, galactose, mannose, fructose, etc. The major natural sources for the production of polysaccharides include plants and microorganisms. In the present work, four bacterial and two fungal polysaccharides (PS or EPS) were used for the modification and preservation of Pycnoporus sanguineus cellobiose dehydrogenase (CDH) activity. It was found that the presence of polysaccharide preparations clearly enhanced the stability of cellobiose dehydrogenase compared to the control value (4 °C). The highest stabilization effect was observed for CDH modified with Rh110EPS. Changes in the optimum pH in the samples of CDH incubated with the chosen polysaccharide modifiers were evidenced as well. The most significant effect was observed for Rh24EPS and Cu139PS (pH 3.5). Cyclic voltammetry used for the analysis of electrochemical parameters of modified CDH showed the highest peak values after 30 days of incubation with polysaccharides at 4 °C. In summary, natural polysaccharides seem to be an effective biotechnological tool for the modification of CDH activity to increase the possibilities of its practical applications in many fields of industry.

Novel visible-light-driven Fe2O3/Ag3VO4 composite with enhanced photocatalytic activity toward organic pollutants degradation

RSC Advances ◽  
2016 ◽  
Vol 6 (5) ◽  
pp. 3600-3607 ◽  
Author(s):  
Yuanguo Xu ◽  
Liquan Jing ◽  
Xiao Chen ◽  
Haiyan Ji ◽  
Hui Xu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Organic Pollutants ◽  
Electrochemical Impedance ◽  
Visible Light Driven

Photoactivity of Ag3VO4 can be enhanced by modification with Fe2O3. The electrochemical impedance of the composite being smaller than pure Ag3VO4 may be one reason.

Novel AgI-decorated β-Bi2O3 nanosheet heterostructured Z-scheme photocatalysts for efficient degradation of organic pollutants with enhanced performance

2015 ◽  
Vol 44 (25) ◽  
pp. 11582-11591 ◽  
Author(s):  
Zhengyuan Zhang ◽  
Deli Jiang ◽  
Chaosheng Xing ◽  
Linlin Chen ◽  
Min Chen ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Organic Pollutants ◽  
Visible Light Driven

Novel AgI nanoparticle-decorated β-Bi2O3 nanosheet heterostructured Z-scheme photocatalysts were fabricated, which exhibited significantly enhanced visible-light-driven photocatalytic activity.

Enhanced photocatalytic activity of Eu-doped Bi2S3 nanoflowers for degradation of organic pollutants under visible light illumination

2015 ◽  
Vol 5 (8) ◽  
pp. 4055-4063 ◽  
Author(s):  
Arpita Sarkar ◽  
Abhisek Brata Ghosh ◽  
Namrata Saha ◽  
Amit Kumar Dutta ◽  
Divesh N. Srivastava ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Organic Pollutants ◽  
Light Illumination ◽  
Visible Light Illumination ◽  
Visible Light Driven

Eu-doped Bi2S3 nanoflowers possess highly visible light driven photocatalytic activity towards degradation of organic pollutants.

scholarly journals One-Dimensional Nanostructured TiO2for Photocatalytic Degradation of Organic Pollutants in Wastewater

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
Ting Feng ◽  
Gen Sheng Feng ◽  
Lei Yan ◽  
Jia Hong Pan
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Photocatalytic Oxidation ◽  
Sol Gel ◽  
Chemical Vapor ◽  
Inorganic Element ◽  
One Dimensional ◽  
Practical Applications ◽  
Excellent Photocatalytic Activity

The present paper reviews the progress in the synthesis of one-dimensional (1D) TiO2nanostructures and their environmental applications in the removal of organic pollutants. According to the shape, 1D TiO2nanostructures can be divided into nanorods, nanotubes, nanowires/nanofibers, and nanobelts. Each of them can be synthesized via different technologies, such as sol-gel template method, chemical vapor deposition, and hydrothermal method. These methods are discussed in this paper, and the recent development of the synthesis technologies is also presented. Furthermore, the organic pollutants, degradation using the synthesized 1D TiO2nanostructures is studied as an important application of photocatalytic oxidation (PCO). The 1D nanostructured TiO2exhibited excellent photocatalytic activity in a PCO process, and the mechanism of photocatalytic degradation of organic pollutants is also discussed. Moreover, the modification of 1D TiO2nanostructures using metal ions, metal oxide, or inorganic element can further enhance the photocatalytic activity of the photocatalyst. This phenomenon can be explained by the suppression of e−-h+pairs recombination rate, increased specific surface area, and reduction of band gap. In addition, 1D nanostructured TiO2can be further constructed as a film or membrane, which may extend its practical applications.

Facile fabrication of a NiO/Ag3PO4 Z-scheme photocatalyst with enhanced visible-light-driven photocatalytic activity

2020 ◽  
Vol 44 (29) ◽  
pp. 12806-12814 ◽  
Author(s):  
Ning Li ◽  
Yanlei He ◽  
Jiajia Lian ◽  
Qingyun Liu ◽  
Xianxi Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Organic Pollutants ◽  
Photocatalytic Performance ◽  
Visible Light Driven ◽  
Facile Fabrication

The photocatalytic performance of Z-scheme NiO/Ag/Ag3PO4 was evaluated by degrading organic pollutants under visible light.

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