A novel charge-driven self-assembly method to prepare visible-light sensitive TiO2/activated carbon composites for dissolved organic compound removal

2011 ◽  
Vol 168 (1) ◽  
pp. 485-492 ◽  
Author(s):  
Wei Zhang ◽  
Linda Zou ◽  
Lianzhou Wang
Keyword(s):  
Activated Carbon ◽  
Organic Compound ◽  
Visible Light ◽  
Self Assembly ◽  
Carbon Composites ◽  
Assembly Method

A novel ternary CuO decorated Ag3AsO4/GO hybrid as a Z-scheme photocatalyst for enhanced degradation of phenol under visible light

2017 ◽  
Vol 41 (3) ◽  
pp. 1380-1389 ◽  
Author(s):  
Md. Rakibuddin ◽  
Subrata Mandal ◽  
Rajakumar Ananthakrishnan
Keyword(s):  
Catalytic Activity ◽  
Visible Light ◽  
Self Assembly ◽  
Assembly Method ◽  
Enhanced Degradation

A novel Z-scheme ternary CuO/Ag3AsO4/GO hybrid having significant visible light catalytic activity and stability is successfully synthesized via a self-assembly method.

scholarly journals In situ self-assembly of zirconium metal–organic frameworks onto ultrathin carbon nitride for enhanced visible light-driven conversion of CO2 to CO

2020 ◽  
Vol 8 (12) ◽  
pp. 6034-6040 ◽  
Author(s):  
Yanan Wang ◽  
Wenlong Zhen ◽  
Yiqing Zeng ◽  
Shipeng Wan ◽  
Haiwei Guo ◽  
...  
Keyword(s):  
Visible Light ◽  
Self Assembly ◽  
Carbon Nitride ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Assembly Method ◽  
Visible Light Driven ◽  
Metal Organic ◽  
Zirconium Metal

A series of Zr-porphyrin metal–organic framework (Zr-PMOF)/ultrathin g-C3N4 (UCN) heterostructure photocatalysts, as stable and efficient catalysts for the photoreduction of CO2, have been fabricated via a facile in situ hydrothermal self-assembly method.

Preparation, Characterization, and Photocatalytic Performance of Bismuth and Boron Co-Doped Mesporous TiO2 by EISA Method

2014 ◽  
Vol 953-954 ◽  
pp. 1003-1007
Author(s):  
Yu Xiu Zhang ◽  
Li Yang ◽  
Dai Mei Chen ◽  
Shuang Deng ◽  
Ying Jie Shi
Keyword(s):  
Visible Light ◽  
Self Assembly ◽  
Photocatalytic Performance ◽  
X Ray Diffraction ◽  
X Ray ◽  
Assembly Method ◽  
Transmission Electron ◽  
Evaporation Induced Self Assembly ◽  
Crystallite Sizes ◽  
Mesoporous Structures

Abstract. The large-pore mesoporous Bi-B-TiO2 nanoparticles with the different Bi/Ti rations were prepared by EISA(evaporation-induced self-assembly) method. The prepared catalysts were characterized by X-ray diffraction, transmission electron microscopy, N2 absorption-desorption, ultraviolet visible light spectroscopy and photoluminescence spectroscopy technologies. The results revealed that all the samples are large aperture mesoporous structures. The crystallite sizes were in the range7-11nm, as confirmed by the results obtained from TEM images. The photodecomposition experiments showed that the photodegradation activity of Bi-B-doped TiO2 was higher than that of undoped TiO2 in degradation of 2, 4–dichlorophenol under visible light irradiation.

scholarly journals Influence of Synthesis Approach on Controlled Microstructures and Photocatalytic Properties of Ag/AgBr-Activated Carbon Composites on Visible Light Degradation of Tetracycline

Catalysts ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1396
Author(s):  
Saheed O. Sanni ◽  
Hendrik G. Brink ◽  
Elvera L. Viljoen
Keyword(s):  
Particle Size ◽  
Activated Carbon ◽  
Visible Light ◽  
Electrochemical Characterizations ◽  
Physicochemical Characterization ◽  
Carbon Composites ◽  
Particle Size Distributions ◽  
Toc Removal ◽  
Visible Light Degradation ◽  
Synthesis Approach

The influence of the synthesis approach (thermal polyol and deposition–precipitation) regarding the dispersion of Ag/AgBr nanoparticles dispersed on activated carbon prepared from chemical impregnated pinecone (TP-AABR-ACK, and DP-AABR-ACK) was studied, to increase their photocatalytic efficiency on the degradation of tetracycline (TC). The physicochemical characterization evidenced the significance of the ACK catalyst promoter in enhancing controlled microstructures (morphologies and particle size distributions), synergistic interface interaction between AABR NPs and the carbonaceous support, and efficient photogenerated charge carriers separation within TP-AABR-ACK, and DP-AABR-ACK composites. The results revealed 92% removal of TC within 180 min under the LED visible light irradiation, which was achieved using TP-AABR-ACK when compared to DP-AABR-ACK composite and other catalysts in this study. Such superior results achieved with TP-AABR-ACK composite were attributed to controlled morphologies, reduced particle size and agglomeration, improved absorptivity, and superior cooperative effect between the AABR and ACK catalyst promoter as evidenced from SEM, EDX, TEM, UV-DRS, and electrochemical characterizations, respectively. Furthermore, enhanced TOC removal and abundance of reactive superoxide anion generation were achieved with the TP-AABR-ACK composite in this study.

scholarly journals Effective Electrons Transfer Pathway of the Ternary TiO2/RGO/Ag Nanocomposite with Enhanced Photocatalytic Activity under Visible Light

2017 ◽  
Author(s):  
Hongwei Tian ◽  
Chenxing Wan ◽  
Xin Xue ◽  
Xiaoying Hu ◽  
Xiaoyi Wang
Keyword(s):  
Visible Light ◽  
Self Assembly ◽  
Photocatalytic Performance ◽  
Separation Efficiency ◽  
Mesoporous Tio2 ◽  
Local Surface ◽  
Local Surface Plasmon Resonance ◽  
Assembly Method ◽  
Ternary Nanocomposite ◽  
Reduced Graphene

Mesoporous TiO2/reduced graphene oxide/Ag (TiO2/RGO/Ag) ternary nanocomposite with effective electrons transfer pathway is obtained by an electrostatic self-assembly method and photo-assisted treatment. Compared with bare mesoporous TiO2 (MT) and mesoporous TiO2/RGO (MTG), the ternary mesoporous TiO2/RGO/Ag (MTGA) nanocomposite exhibited superior photocatalytic performance for the degradation of MB under visible light, and the degradation rate reached 0.017 min-1, which was 3.4 times higher than that of MTG. It is proposed that Ag nanoparticles can form the local surface plasmon resonance (LSPR) to absorb the visible light and distract the electrons into MT, and RGO can accept the electrons from MT to accelerate the separation efficiency of carriers. The establishment of MTGA ternary nanocomposite make the three components act synergistic effect to enhance the photocatalytic performance.

Intercalation of Fenoprofen into Layered Double Hydroxide for the Formation of Controlled Release Anti-Inflammatory Drug

2017 ◽  
Vol 1142 ◽  
pp. 230-233 ◽  
Author(s):  
Siti Halimah Sarijo ◽  
Monica Limau Jadam ◽  
Faizah Md Saleh
Keyword(s):  
Controlled Release ◽  
Organic Compound ◽  
Layered Double Hydroxide ◽  
Self Assembly ◽  
Interlayer Spacing ◽  
Nanocomposite Materials ◽  
Molar Ratio ◽  
Hybrid Nanocomposite ◽  
Assembly Method ◽  
Double Hydroxide

Synthesis of a new hybrid nanocomposite materials, zinc-aluminium-fenoprofen, ZAF was successfully accomplished by self-assembly method with molar ratio of Zn to Al; R=2 at concentration of fenoprofen=0.3 M. As a result of the successful intercalation, the interlayer spacing expanded from 9.8 Å in the zinc-aluminium-layered double hydroxide, ZAL to 20.1 Å in the ZAF hybrid nanocomposite. The FTIR spectra of the ZAF show resemblance peaks of ZAL and fenoprofen indicating the inclusion of the organic compound into the LDH interlamellae. The percentage loading of the guest anion, fenoprofen in ZAL was estimated to be about 63.4% (w/w) calculated from the carbon content.

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