Mechanical-assisted preparation and photocatalytic properties of almost-visible light-driven ZnO/ZnFe2O4 nanocomposites

2014 ◽  
Vol 1641 ◽  
Author(s):  
Jiaqian Qin ◽  
Yanan Xue ◽  
Xinyu Zhang ◽  
Riping Liu
Keyword(s):  
Thermal Decomposition ◽  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Aqueous Medium ◽  
Decomposition Method ◽  
Low Cost ◽  
Thermal Decomposition Method ◽  
Visible Light Driven ◽  
Shape And Size

ABSTRACTZnO and ZnO/ZnFe2O4 nanocomposites were synthesized by mechanical-assisted thermal decomposition method. The results show that this method is a simple and low cost method to prepare ZnO and ZnO/ ZnFe2O4 nanocomposites. The nanorod's shape and size have been identified through SEM and TEM. The photocatalytic activity of ZnO and ZnO/ZnFe2O4 nanocomposites were tested by the degradation of methylene blue (MB) in aqueous medium under almost-visible light and the efficiency of the catalyst has been discussed in detail.

scholarly journals Real roles of perylene diimides for improving photocatalytic activity

RSC Advances ◽  
2020 ◽  
Vol 10 (39) ◽  
pp. 23024-23037 ◽  
Author(s):  
Fengxia Zhang ◽  
Wenjing Li ◽  
Tianyi Jiang ◽  
Xuemei Li ◽  
Yuanyuan Shao ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrothermal Method ◽  
Perylene Diimides ◽  
Photodegradation Rate ◽  
Composite Photocatalysts ◽  
Visible Light Driven

Three novel visible-light-driven composite photocatalysts were synthesized by hydrothermal method. The effects of introducing PDIs with different structures into TiO2 were evaluated by assaying the photodegradation rate of methylene blue.

Hydrothermal formation of N/Ti3+ codoped multiphasic (brookite–anatase–rutile) TiO2 heterojunctions with enhanced visible light driven photocatalytic performance

2017 ◽  
Vol 46 (45) ◽  
pp. 15727-15735 ◽  
Author(s):  
Mingxuan Sun ◽  
Yuanyuan Kong ◽  
Yalin Fang ◽  
Swati Sood ◽  
Yuan Yao ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
Rutile Tio2 ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Driven ◽  
Visible Light Photocatalytic

Multiphasic TiO2 heterojunctions codoped with N and Ti3+ were fabricated and their enhanced visible light photocatalytic activity for the degradation of methylene blue was demonstrated.

scholarly journals CeO2/CdS Heterojunctions Decorated Cotton Fabrics as Facile Recyclable Photocatalysts for Highly Efficient Visible Light Driven Degradation of Methylene Blue

2021 ◽  
Author(s):  
Rui Zou ◽  
Linhua Li ◽  
Lin Yang ◽  
jianwu lan ◽  
Hongyu Liu ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Cotton Fabric ◽  
Low Cost ◽  
Light Response ◽  
Cotton Fabrics ◽  
Degradation Efficiency ◽  
Cds Nanoparticles ◽  
Composite Photocatalysts ◽  
Visible Light Driven

Abstract In this work, visible light response CeO2/CdS decorated cotton fabrics as durable and facile recyclable composite photocatalysts were fabricated for photo-degradation of methylene blue (MB). First of all, amino-functionalized CeO2/CdS nanoparticles were synthesized through a fast, efficient and low-cost coprecipitation method. Subsequently, the as-prepared CeO2/CdS nanoparticles were immobilized on aldehyde-functionalized cotton fabric surfaces as composite photocatalysts via "amine-aldehyde" chemical reaction. The surface microstructure and chemical composition of the CeO2/CdS decorated cotton fabric (CeO2/CdS-CF) were characterized by SEM, FTIR and XPS, respectively. The results showed that CeO2/CdS nanoparticles were successfully anchored on the surface of cotton fabric, and distributed uniformly. As expected, the as-prepared CeO2/CdS-CF exhibited excellent photocatalytic activity, which can degrade MB within 90 min with a degradation efficiency of 93.8% under simulated sunlight irradiation, due to the CeO2/CdS heterostructure with the efficient photo-generated charge transfer and separation. In addition, the degradation efficiency remained above 90.3% after five successive degradation cycles, indicating that the obtained CeO2/CdS-CF possessed excellent stability and recyclability. This work opened up a facile preparation way for the fabrication of durable and recyclable composite photocatalysts, and has a promising application in treating dye contaminated wastewater.

PHOTOCATALYTIC DEGRADATION OF ORGANIC DYE USING NANO ZnO

2011 ◽  
Vol 10 (01n02) ◽  
pp. 253-257 ◽  
Author(s):  
R. SARAVANAN ◽  
H. SHANKAR ◽  
G. RAJASUDHA ◽  
A. STEPHEN ◽  
V. NARAYANAN
Keyword(s):  
Thermal Decomposition ◽  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Decomposition Method ◽  
Zinc Acetate Dihydrate ◽  
Chemical Precipitation ◽  
Morphological Properties ◽  
X Ray Diffraction ◽  
Acetate Dihydrate ◽  
Thermal Decomposition Method

Photocatalytic degradation of methylene blue was investigated using nanocrystalline ZnO prepared by chemical precipitation and thermal decomposition routes. In both preparation routes zinc acetate dihydrate was used as the precursor. In the case of precipitation route, sodium hydroxide was used as the precipitating agent at room temperature, but in thermal decomposition method the precursor was just calcined at 450°C for 30 min. The structural and morphological properties were studied by X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscopy (SEM). The sample prepared by precipitation route exhibits higher photocatalytic activity than that by thermal decomposition method and the reasons for the enhanced photocatalytic activity have been discussed in detail.

Metal free MoS2 2D sheets as a peroxidase enzyme and visible-light-induced photocatalyst towards detection and reduction of Cr(vi) ions

2018 ◽  
Vol 42 (20) ◽  
pp. 16919-16929 ◽  
Author(s):  
Priyakshree Borthakur ◽  
Purna K. Boruah ◽  
Manash R. Das ◽  
Sofya B. Artemkina ◽  
Pavel A. Poltarak ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Visible Light ◽  
Decomposition Method ◽  
Two Dimensional ◽  
Molybdenum Disulphide ◽  
Metal Free ◽  
Thermal Decomposition Method ◽  
Peroxidase Enzyme

Two-dimensional molybdenum disulphide (MoS2) sheets were prepared by using a simple thermal decomposition method.

Effect of Surfactants on Modifying the Surface of Magnetic Nanoparticles by Thermal Decomposition

2011 ◽  
Vol 335-336 ◽  
pp. 951-955 ◽  
Author(s):  
Hui Ping Shao ◽  
Tao Lin ◽  
Ji Luo ◽  
Zhi Meng Guo
Keyword(s):  
Thermal Decomposition ◽  
Oleic Acid ◽  
Magnetic Nanoparticles ◽  
Decomposition Method ◽  
Magnetic Particles ◽  
Spherical Shape ◽  
Thermal Decomposition Method ◽  
Key Factor ◽  
Shape Of Particles ◽  
Shape And Size

The nanosize magnetic particles were synthesized by thermal decomposition method with size distribution in the range of 10 ~ 30 nm. Different category and quantity of surfactants were used modifying the surface of the synthesized nanoparticles to control the particles’ shape and size. Multi-shapes, such as uniformity cubic, mixture of spherical and cubic, and the similar chick footmarks, were acquired in our experiment by different surfactants. It indicates the surfactant is a key factor for the size and shape of particles. The surfactants of PVP and oleylamine made the particle shape be uniformity cubic; However, the particle partly behaved as spherical shape in the case of using PVP and oleic acid as surfactants.

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