New Zn (II) Complex-Composite Material: Piezo-Enhanced Photomineralization of Organic Pollutants and Wastewater from Lubricant Industry

2021 ◽  
Author(s):  
Someshwar Pola ◽  
Venkateshwar Rao D ◽  
Mahesh Subburu ◽  
Ramesh Gade ◽  
Manohar Basude ◽  
...  
Keyword(s):  
Composite Material ◽  
Photocatalytic Activity ◽  
Organic Pollutants ◽  
Industrial Wastewater ◽  
Organic Dye ◽  
Current Work ◽  
Dye Pollutants

TThe current work, the ZnO-[Zn(CPAMN)] complex composite material used for piezo-photocatalyst for mineralization of organic dye pollutants and industrial wastewater. The ZnO-[Zn(CPAMN)] complex-composite material showed higher piezo-photocatalytic activity than simple...

scholarly journals Effect of iron doped titanium oxide encapsulated in alginate on photocatalytic activity for the removal of dye pollutants

RSC Advances ◽  
2020 ◽  
Vol 10 (38) ◽  
pp. 22311-22317 ◽  
Author(s):  
Soulaima Chkirida ◽  
Nadia Zari ◽  
Redouane Achour ◽  
Abou el kacem Qaiss ◽  
Rachid Bouhfid
Keyword(s):  
Photocatalytic Activity ◽  
Iron Oxide ◽  
Visible Light ◽  
Titanium Oxide ◽  
Organic Pollutants ◽  
Uv Irradiation ◽  
Dye Pollutants ◽  
Iron Doped

Iron oxide/titania oxide are encapsulated in alginate biopolymer. These bio-nanocomposites are suitable for the photodegradation of dissimilar organic pollutants under UV irradiation as well as visible light.

scholarly journals Preparation of Dual Z-Scheme Bi2MoO6/ZnSnO3/ZnO Heterostructure Photocatalyst for Efficient Visible Light Degradation of Organic Pollutants

2021 ◽  
Author(s):  
Yuanyingxue Gao ◽  
Li Li ◽  
Wenlin Zu ◽  
Yingru Sun ◽  
Jiahui Guan ◽  
...  
Keyword(s):  
Composite Material ◽  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Crystal Violet ◽  
Photoelectron Spectroscopy ◽  
Heterogeneous Structure ◽  
Photoluminescence Intensity ◽  
X Ray ◽  
Cubic Structure

Abstract An important means of achieving efficient charge separation and improving photocatalytic activity is the construction of heterostructures. In this study, the Bi2MoO6/ZnSnO3/ZnO heterostructure photocatalyst was synthesized by the hydrothermal method. The synthesized samples were carefully examined by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), scanning electron microscope (SEM), high-resolution transmission electron microscopy (HR-TEM), photoluminescence (PL), and other analytical techniques. Meanwhile, the photocatalytic performance was further evaluated by multi-mode photocatalytic degradation with crystal violet (CV). The results show that the composite material has a relatively homogeneous cubic structure in size and shape. In the cubic structure, a heterogeneous structure exists between Bi2MoO6, ZnSnO3 and ZnO. Simultaneously, the dramatic changes in physical morphology, such as the specific surface area and particle size of the composites, led to a unique set of properties, such as a significant climb in light absorption properties and superior photocatalytic activity. In addition, the Bi2MoO6/ZnSnO3/ZnO composite material shows lower photoluminescence intensity, smaller arc radius, and stronger photocurrent response compared to ZnO, Bi2MoO6 and ZnSnO3/ZnO. Meanwhile, Bi2MoO6/ZnSnO3/ZnO shows higher photocatalytic efficiency for crystal violet (CV) and tetracycline hydrochloride (TC) and maintains good stability after 3 cycles of photodegradation experiments. Based on experimental results, the existence of heterojunctions between ZnO, ZnSnO3 and Bi2MoO6 and the possible photocatalytic mechanism for the degradation of crystal violet by dual Z-scheme composites are proposed. In conclusion, this study provides a feasible strategy for the photocatalytic degradation of organic pollutants by introducing ZnSnO3 and Bi2MoO6 to successfully construct composite catalysts with dual Z-scheme heterostructures.

Bi2O3/nylon multilayered nanocomposite membrane for the photocatalytic inactivation of waterborne pathogens and degradation of mixed organic pollutants

2021 ◽  
Author(s):  
Tanveer A. Gadhi ◽  
Aizaz Qureshi ◽  
Najeebullah Channa ◽  
Rasool Bux Mahar ◽  
Alessandro Chiadò ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Organic Dye ◽  
Nanocomposite Membrane ◽  
Waterborne Pathogens ◽  
Dye Pollutants ◽  
Photocatalytic Inactivation

Bi2O3/nylon multilayered nanocomposite membrane was fabricated by electrospinning and effectively used to degrade organic dye pollutants and pathogens through ROS produced by photocatalysis.

A review on TiO2-based composites for superior photocatalytic activity

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Wail Al Zoubi ◽  
Abbas Ali Salih Al-Hamdani ◽  
Baek Sunghun ◽  
Young Gun Ko
Keyword(s):  
Photocatalytic Activity ◽  
Organic Pollutants ◽  
Cost Efficiency ◽  
High Stability ◽  
Photocatalytic Oxidation ◽  
Oxidation Process ◽  
Ambient Conditions ◽  
Photoelectrochemical Activity ◽  
As Doping ◽  
Degradation Of Pollutants

Abstract Heterogeneous photocatalysts was a promising material for removing organic pollutants. Titanium dioxide (TiO2) was a suitable photocatalyst for its cost efficiency and high stability to reduce various pollutants. Enhancing TiO2 photocatalyst performance by doping with changed metals or non-metal ions and organic compounds have been reviewed. These methods could enhance photoelectrochemical activity via: (i) by a donor of electrons via electron-donor agents that would produce particular defects in TiO2 structure and capture transporters of charge; (ii) by reducing recombination rate of the charge transporters and increasing degradation of pollutants. This study investigates the modification approaches of TiO2 that comprise methods for overcoming the essential TiO2 restrictions and enhancing the photocatalytic degradation of organic pollutants. Consequently, it emphasized on the current progress of modified-TiO2 used for different pollutants in ambient conditions. Amendment techniques, such as inorganic and organic parts as doping, are studied. The reported experimental results obtained with the photocatalytic oxidation process for degrading organic pollutants were also collected and assessed.

scholarly journals Fabrication of TiO2/Fe2O3/CdS systems: effects of Fe2O3 and CdS content on superior photocatalytic activity

RSC Advances ◽  
2021 ◽  
Vol 11 (17) ◽  
pp. 10300-10308
Author(s):  
Hui Feng ◽  
Siqi Feng ◽  
Niu Tang ◽  
Songbai Zhang ◽  
Xiangyang Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Activity ◽  
Organic Pollutants ◽  
High Performance ◽  
Low Cost

New idea for the low cost synthesis of high performance photocatalysts for the photodegradation of organic pollutants in aqueous solution.

scholarly journals Laser-Ablated ZnO Nanoparticles and Their Photocatalytic Activity toward Organic Pollutants

Materials ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1127 ◽  
Author(s):  
Neli Mintcheva ◽  
Ali Aljulaih ◽  
Wilfried Wunderlich ◽  
Sergei Kulinich ◽  
Satoru Iwamori
Keyword(s):  
Photocatalytic Activity ◽  
Organic Pollutants ◽  
Zno Nanoparticles

Facile Preparation of P-25 Films Dip-Coated Nickel Foam and High Photocatalytic Activity for the Degradation of Quinoline and Industrial Wastewater

2011 ◽  
Vol 9 (1) ◽  
Author(s):  
Suiyi Zhu ◽  
Xia Yang ◽  
Gu-Ning Wang ◽  
Lei-Lei Zhang ◽  
He-Feng Zhu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Aqueous Solutions ◽  
Specific Surface ◽  
Continuous Flow ◽  
Industrial Wastewater ◽  
Nickel Foam ◽  
High Photocatalytic Activity ◽  
Photocatalytic Reactor ◽  
X Ray ◽  
Three Phase

A kind of P-25 TiO2 films coated nickel foam was synthesized by a facile dip-coating/calcination route, and used to fabricate a continuous-flow three-phase photocatalytic reactor. The morphology, crystal phase structure, surface composition and specific surface area of P-25 films coated nickel foam were investigated by field emission scanning electron microscope (FE-SEM), X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS) and nitrogen adsorption-desorption measurements, respectively. The results indicated that the coated/ calcined P-25 films had the porous surface structure fabricated by nano-sized titanium dioxide consisted of two crystal phases and incorporated with a NiO interlayer. The increase of P-25 contents enhanced the specific surface area; however, 20 percent of initial P-25 sol would result in visible large cracks because of too high P-25 content and consequently cause the peeling of films. The photocatalytic activities of nickel foam with different coating amounts of P-25 for the degradation of quinoline aqueous solutions were investigated with a continuous-flow three-phase photocatalytic reactor based on the P-25 films coated nickel foam. The results suggested that nickel foam coated with 10 percent of P-25 sol had an optimal photocatalytic activity for the degradation of quinoline aqueous solutions. The continuous-flow three-phase photocatalytic reactor fabricated with P-25 films coated nickel foam with an optimal P-25 coating amount shows high photocatalytic activity and stability for the degradation of quinoline aqueous solutions and industrial wastewater. The treated industrial wastewater meets the international discharge standard.

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