Fabrication of hierarchically mesoporous CuO nanostructures and their role as heterogenous catalysts and sensors

RSC Advances ◽  
2016 ◽  
Vol 6 (49) ◽  
pp. 42807-42818 ◽  
Author(s):  
Mehraj Ud Din Sheikh ◽  
Gowhar Ahmad Naikoo ◽  
Molly Thomas ◽  
Mustri Bano ◽  
Devendra Ahirwar ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Sol Gel ◽  
Environmentally Friendly ◽  
Tween 80 ◽  
Sensor Technology

Tween-80 templated mesoporous CuO (mpCuO) nanostructures were explored via a facile, environmentally friendly and scalable sol–gel route for heterogeneous catalysis and sensor technology.

Condensation of aldehydes for environmentally friendly synthesis of 2-methyl-3-phenyl-propanal by heterogeneous catalysis

2002 ◽  
Vol 75 (1-4) ◽  
pp. 197-202 ◽  
Author(s):  
Didier Tichit ◽  
Bernard Coq ◽  
Sophie Cerneaux ◽  
Robert Durand
Keyword(s):  
Heterogeneous Catalysis ◽  
Environmentally Friendly

Sol−Gel-Derived BPO4/Ba2+as a New Efficient and Environmentally-Friendly Bluish-White Luminescent Material

2006 ◽  
Vol 18 (2) ◽  
pp. 458-464 ◽  
Author(s):  
C. K. Lin ◽  
Y. Luo ◽  
H. You ◽  
Z. Quan ◽  
J. Zhang ◽  
...  
Keyword(s):  
Sol Gel ◽  
Environmentally Friendly ◽  
Luminescent Material

scholarly journals Pengaruh Laju Penginjeksian Doping Fluor terhadap Aktivitas Fotokatalis Nanotitania Menggunakan Metode Sol Gel

2020 ◽  
Vol 8 (2) ◽  
pp. 209-218
Author(s):  
Sri Rahayu ◽  
◽  
Posman Manurung ◽  
Roniyus Marjunus ◽  
◽  
...  
Keyword(s):  
Uv Light ◽  
Sol Gel ◽  
Tween 80 ◽  
Ammonium Fluoride ◽  
Sintered Sample ◽  
Titanium Isopropoxide ◽  
Injection Rate ◽  
Particle Sizes ◽  
Fluorine Doping ◽  
Transmission Electron

The titania synthesis of fluorine doping (F-TiO2) was carried out through the sol-gel method. Titanium isopropoxide (TTIP), tween-80, isopropanol and ammonium fluoride (NH4F) as sources of doping fluorine were used as the main ingredients. This research aimed to study the effect of fluorine doping injection rate using injection pumps on F-TiO2 photocatalyst activity. Four fluorine doping samples were prepared with the respective penetration rate of 0.4 ml / 30 minutes; 0.4 ml / 60 minutes; 0.4 ml / 90 minutes and 0.4 ml / 120 minutes. The titania powder was calcined at 450 oC for 5 hours. The sintered sample was tested for photodegradation of remazol yellow under UV light. Physical characteristics were analyzed using transmission electron microscopy (TEM) and Uv-Vis spectrophotometer. The results of the UV-Vis spectrophotometer showed that the particle size of samples with an injection rate of 0.4 ml / 90 minutes showed higher photocatalyst activity with particle sizes of (14 nm ± 4 nm).

Eu3+-Doped Y3−xNdxAl3O12 garnet: synthesis and structural investigation

2017 ◽  
Vol 19 (5) ◽  
pp. 3729-3737 ◽  
Author(s):  
L. Pavasaryte ◽  
A. Katelnikovas ◽  
V. Klimavicius ◽  
V. Balevicius ◽  
A. Krajnc ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Structural Investigation ◽  
Sol Gel ◽  
Environmentally Friendly ◽  
Yttrium Aluminium Garnet ◽  
Gel Method ◽  
Sol Gel Method ◽  
Yttrium Aluminium ◽  
Co Doped

Nd3+-doped yttrium aluminium garnet and Eu3+–Nd3+-co-Doped yttrium aluminium garnet were synthesized using an environmentally friendly sol–gel method at low temperatures.

Synthesis and characterization of environmentally friendly BiVO4 yellow pigment by non-hydrolytic sol-gel route

2019 ◽  
Vol 91 (1) ◽  
pp. 127-137 ◽  
Author(s):  
Xiaojun Zhang ◽  
Ting Chen ◽  
Yanqiao Xu ◽  
Weihui Jiang ◽  
Jianmin Liu ◽  
...  
Keyword(s):  
Sol Gel ◽  
Environmentally Friendly ◽  
Yellow Pigment ◽  
Synthesis And Characterization

Short Introduction to Sol—Gel Chemistry in Heterogeneous Catalysis

ChemInform ◽  
2006 ◽  
Vol 37 (48) ◽  
Author(s):  
Jan Hajek ◽  
Dmitry Yu. Murzin
Keyword(s):  
Heterogeneous Catalysis ◽  
Sol Gel ◽  
Short Introduction

Photocatalytic Activity of Sol-Gel Derived Bi2O3-TiO2 Nanocomposite

2012 ◽  
Vol 712 ◽  
pp. 73-83 ◽  
Author(s):  
C. Karunakaran ◽  
P. Magesan ◽  
P. Gomathisankar
Keyword(s):  
Visible Light ◽  
Deep Level ◽  
Anatase Phase ◽  
Sol Gel ◽  
Spherical Shape ◽  
Tween 80 ◽  
Electron Microscopic ◽  
Sem Images ◽  
X Ray ◽  
Crystallite Sizes

Bi2O3-TiO2 nanocomposites were obtained by sol-gel method using tween 80 (T-80) or polyvinyl pyrrolidone-polyethylene glycol (PVP-PEG) as templating agent. The powder X-ray diffraction (XRD) patterns of both the composites reveal the crystal structure of Bi2O3 as primitive tetragonal and TiO2 is in anatase phase. The energy dispersive X-ray (EDX) spectra provide the composition of Bi2O3 in Bi2O3-TiO2 (T-80) and Bi2O3-TiO2 (PVP-PEG) as 3.8 and 20.4 mol. %, respectively. The average crystallite sizes of Bi2O3-TiO2 (T-80) and Bi2O3-TiO2 (PVP-PEG), derived from XRD, are 9 and 17 nm, respectively. The scanning electron microscopic (SEM) images show the spherical shape of Bi2O3-TiO2 (T-80) and the composites are polycrystalline. The diffuse reflectance spectra (DRS) of the composites display faint absorption of visible light and strong absorption in UV-A region. The photoluminescence (PL) spectra of both the composites are similar and the observed near band gap emission (NBE) and deep level emission (DLE) agree with those of TiO2. The impedance spectra show that the charge-transfer resistances of the composites do not differ significantly. The visible light photoimpedance spectra display the photoconductance of Bi2O3-TiO2 (PVP-PEG) but not that of Bi2O3-TiO2 (T-80). Although the visible light-photocatalytic activities of the two nanocomposites to degrade dye do not differ significantly Bi2O3-TiO2 (T-80) under UV-A light degrades dyes faster than Bi2O3-TiO2 (PVP-PEG).

scholarly journals Pengaruh Agen Kimia Berbeza terhadap Penguraian Terma dan Pembentukan Fasa Bahan La0.6SR0.4CoO3-δ yang Disediakan melalui Kaedah Sol-Gel

2020 ◽  
Vol 49 (12) ◽  
pp. 3143-3154
Author(s):  
Abdullah Abdul Samat ◽  
Mahendra Rao Somalu ◽  
Andanastuti Muchtar ◽  
Hamimah Abd. Rahman ◽  
Nafisah Osman
Keyword(s):  
Sol Gel ◽  
Tween 80 ◽  
Triton X ◽  
Brij 97

Sifat penguraian terma dan pembentukan fasa bahan lantanum strontium kobalt oksida, La0.6Sr0.4CoO3-δ (LSC) yang disediakan melalui kaedah sol-gel berbantu agen kimia berbeza, iaitu agen serakan, agen pempolimeran dan agen permukaan aktif atau surfaktan telah dicirikan secara sistematik masing-masing melalui analisis termogravimetrik (TG) dan pembelauan sinar-X (XRD). Penguraian terma bahan organik dan bahan bukan organik yang tidak diperlukan dalam serbuk pelopor bahan LSC telah lengkap pada suhu kurang daripada 1000 °C bagi serbuk pelopor yang disediakan dengan menggunakan agen serakan dan agen pempolimeran, dan suhu melebihi 1000 °C bagi serbuk pelopor yang disediakan dengan menggunakan surfaktan. Sifat penguraian terma ini dipengaruhi oleh suhu pengeringan serbuk pelopor tersebut dan berat molekul agen kimia. Pembentukan fasa tunggal perovskit LSC telah disahkan dalam serbuk pelopor yang disediakan dengan menggunakan agen serakan, iaitu karbon teraktif dan agen pempolimeran, iaitu etilena glikol selepas serbuk pelopor tersebut dikalsin pada suhu 900 °C. Sebaliknya, fasa tunggal perovskit LSC tidak terbentuk secara lengkap dalam serbuk pelopor yang disediakan dengan menggunakan surfaktan (polietilena glikol, Triton-X-100, Brij-97 dan Tween-80) walaupun selepas serbuk pelopor tersebut telah dikalsin pada suhu yang lebih tinggi iaitu 1100 °C. Kepekatan surfaktan, nisbah molar surfaktan kepada logam kation dan nilai pH larutan bahan pelopor yang tidak sesuai telah menyumbang kepada keputusan tersebut.

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