Visible-light assisted methylene blue (MB) removal by novel TiO2/adsorbent nanocomposites

2010 ◽  
Vol 61 (11) ◽  
pp. 2863-2871 ◽  
Author(s):  
Wei Zhang ◽  
Linda Zou ◽  
Lianzhou Wang
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Cost Effective ◽  
Light Sensitivity ◽  
Wet Chemical Method ◽  
Adsorption Ability ◽  
Synergistic Interactions ◽  
Dissolved Organic Compounds ◽  
Wet Chemical ◽  
Chemical Procedure

In present work, visible light sensitive TiO2/adsorbent nanocomposites (TNC) were prepared via a facile wet chemical method. Three types of adsorbents including zeolites (F-9, HSZ-690 and HSZ-930), mesoporous silica (MPS-2.7 and 4) and activated carbon, were used as the porous substrates for nanocomposites. Visible light sensitivity was incorporated to TNCs by nitrogen doping of TiO2, which is obtained through the addition of a nitrogen precursor, triethylamine, within the same wet chemical procedure. The photocatalytic and adsorption ability of as-prepared TNC resultants were studied using solutions of methylene blue (MB) as a model pollutant. Synergistic interactions between adsorption and visible-light photocatalysis were observed, as under the assistance of visible-light irradiation all TNCs achieved higher MB removal rates than those by adsorption process alone. The better performance of the as-prepared N-doped TNC reveals its potential to be used for cost effective solar photocatalytic degradation of dissolved organic compounds.

Chemical and Thermal Analysis of Silk and Silk-Like Fibres

2015 ◽  
Vol 1134 ◽  
pp. 123-126 ◽  
Author(s):  
Dzaraini Kamarun ◽  
Khadijah Omar ◽  
Farida Zuraina Yusof
Keyword(s):  
Thermal Analysis ◽  
Chemical Analysis ◽  
Chemical Method ◽  
End Users ◽  
Alternative Technique ◽  
Wet Chemical Method ◽  
Natural Silk ◽  
Environmental Friendly ◽  
Wet Chemical ◽  
Chemical Procedure

Natural silk and silk-like synthetic fibres share common external features and ‘hand’ characteristics which cause confusion to end users. Standard chemical tests are the best known technique available but not the most desirable due to the use of chemicals. An alternative technique, thermogravimmetric analysis using a thermogravimmetric analyzer (TGA) is as reliable and is more environmental-friendly. Several fabric samples of natural (silk) and synthetic origin were tested for comparison using the two techniques: TGA and a standard chemical procedure. Bivoltaine and multivoltaine cocoons were used as standards. It was found that all fabric samples tested using TGA agreed with the results obtained from chemical analysis implying the potential of using TGA as an alternative technique to the wet chemical method.

scholarly journals Construction of cost-effective bimetallic nanoparticles on titanium carbides as a superb catalyst for promoting hydrolysis of ammonia borane

RSC Advances ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 843-847 ◽  
Author(s):  
Zhangwei Guo ◽  
Tong Liu ◽  
Qingtao Wang ◽  
Guanhui Gao
Keyword(s):  
Chemical Method ◽  
Bimetallic Nanoparticles ◽  
Cost Effective ◽  
Ammonia Borane ◽  
Wet Chemical Method ◽  
One Step ◽  
Wet Chemical ◽  
Titanium Carbides ◽  
Hydrolysis Of

Bimetallic cost-effective CoNi nanoparticles are supported on MXene by a simple one-step wet-chemical method. The Co0.7Ni0.3/MXene shows the best performance toward catalyzing AB decomposition with TOF of 87.6 molH2molcat−1min−1at 50 °C.

Efficient light trapping of quasi-inverted nanopyramids in ultrathin c-Si through a cost-effective wet chemical method

RSC Advances ◽  
2016 ◽  
Vol 6 (99) ◽  
pp. 96686-96692 ◽  
Author(s):  
Quntao Tang ◽  
Honglie Shen ◽  
Kai Gao ◽  
Hanyu Yao ◽  
Ye Jiang ◽  
...  
Keyword(s):  
Chemical Method ◽  
Light Trapping ◽  
Cost Effective ◽  
Wet Chemical Method ◽  
Silicon Material ◽  
Fold Reduction ◽  
Material Usage ◽  
Wet Chemical

Double-sided quasi-inverted nanopyramids (QIP) is proposed to realize an over 4.2-fold reduction in silicon material usage with the average absorptance value almost the same.

The Synthesis and Photocatalytic Properties of ZnO-SnO2 Nanorods Using Bamboo Charcoal as the Template

2014 ◽  
Vol 1014 ◽  
pp. 21-24
Author(s):  
Wei Liu ◽  
Jian Fa Ou ◽  
Qiu Ying Pan ◽  
Wu Yi Zhou
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Chemical Method ◽  
Degradation Rate ◽  
Organic Pollutant ◽  
Bamboo Charcoal ◽  
Wet Chemical Method ◽  
Transmission Electron ◽  
Zno Nanomaterials ◽  
Wet Chemical

The ZnO-SnO2 nanorods were prepared successfully by wet chemical method and bamboo charcoal as the template. The transmission electron microscope (TEM) results showed that the ZnO-SnO2 nanorods prepared at 700°C were uniform with the diameters of about 55 nm and the lengths of about 160 nm. The photocatalytic activity was studied while the methylene blue was used as the organic pollutant. The results indicate that the degradation rate of the methylene blue by the ZnO-SnO2 nanorods was about 89%, twice higher than that of the pure ZnO nanomaterials.

A type-II semiconductor (ZnO/CuS heterostructure) for visible light photocatalysis

2014 ◽  
Vol 2 (20) ◽  
pp. 7517-7525 ◽  
Author(s):  
Mrinmoyee Basu ◽  
Neha Garg ◽  
Ashok K. Ganguli
Keyword(s):  
Visible Light ◽  
Chemical Method ◽  
Visible Light Photocatalysis ◽  
Type Ii ◽  
Photocatalytic Efficiency ◽  
Wet Chemical Method ◽  
Electron Hole ◽  
Wet Chemical

Formation of ZnO/CuS heterostructure through a simple wet-chemical method leads to a type-II semiconductor. The heterojunction between these two moieties leads to the separation of electron–hole pairs, which further enhances the photocatalytic efficiency of ZnO.

Modified N Doped TiO2 Nanotubes with Magnetic γ-Fe2O3 as Visible Light Photocatalysts

2012 ◽  
Vol 532-533 ◽  
pp. 20-24 ◽  
Author(s):  
Yi Zhu Wang ◽  
Guo Liang Zhang ◽  
Feng Bao Zhang ◽  
Xiao Bin Fan
Keyword(s):  
Visible Light ◽  
Chemical Method ◽  
Spectral Response ◽  
Visible Region ◽  
Oxide Nanoparticles ◽  
Photocatalytic Efficiency ◽  
Wet Chemical Method ◽  
Light Responses ◽  
Wet Chemical ◽  
Novel Catalyst

γ-Fe2O3/N-doped TiO2 nanotubes (N-TiO2 NTs) photocatalyst was successfully prepared by a wet chemical method. Visible light responses of this novel catalyst for decomposing methyl orange (MO) in air were also evaluated. It was found that the photocatalytic activity of γ-Fe2O3/N-TiO2 NTs was higher than those of N-doped TiO2 NTs, TiO2 NTs and P25. The characterizations including TEM, EDX and UV/Vis DRS revealed that iron oxide nanoparticles were decorated in/around N-TiO2 NTs and the spectral response was enhanced in visible region. Meanwhile, the catalyst recycled by external magnetic field showed that its photocatalytic efficiency did not decrease obviously.

Albumin matrix assisted wet chemical synthesis of nanocrystalline MFe2O4 (M = Cu, Co and Zn) ferrites for visible light driven degradation of methylene blue by hydrogen peroxide

RSC Advances ◽  
2016 ◽  
Vol 6 (63) ◽  
pp. 58125-58136 ◽  
Author(s):  
Mrinal Saha ◽  
Siddhartha Mukherjee ◽  
Sanjay Kumar ◽  
Subhrajyoti Dey ◽  
Arup Gayen
Keyword(s):  
Hydrogen Peroxide ◽  
Methylene Blue ◽  
Chemical Synthesis ◽  
Visible Light ◽  
Chemical Process ◽  
Wet Chemical Synthesis ◽  
Visible Light Driven ◽  
Wet Chemical

Nanocrystallite MFe2O4 (M = Cu, Co and Zn) ferrites synthesized via a facile wet chemical process assisted by albumin matrix are reported to exhibit significant photodegradation of methylene blue (MB) in the presence of H2O2 under visible light.

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