scholarly journals In situ synthesis of ordered mesoporous Co-doped TiO2 and its enhanced photocatalytic activity and selectivity for the reduction of CO2

2015 ◽  
Vol 3 (18) ◽  
pp. 9491-9501 ◽  
Author(s):  
Tao Wang ◽  
Xianguang Meng ◽  
Guigao Liu ◽  
Kun Chang ◽  
Peng Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Energy Band ◽  
In Situ Synthesis ◽  
Molar Ratio ◽  
Doped Tio2 ◽  
Ordered Mesoporous ◽  
Reduction Of Co2 ◽  
Co Doped

The photocatalytic selectivity is improved by optimizing the energy-band configurations of Co-doped TiO2 through varying the molar ratio of Co/Ti.

Synthesis of well ordered mesoporous Yb, N co-doped TiO2 with superior visible photocatalytic activity

2012 ◽  
Vol 156 ◽  
pp. 145-152 ◽  
Author(s):  
Yunfei Ma ◽  
Mingyang Xing ◽  
Jinlong Zhang ◽  
Baozhu Tian ◽  
Feng Chen
Keyword(s):  
Photocatalytic Activity ◽  
Doped Tio2 ◽  
Ordered Mesoporous ◽  
Visible Photocatalytic Activity ◽  
Co Doped

scholarly journals Green Synthesis of N/Zr Co-Doped TiO2 for Photocatalytic Degradation of p-Nitrophenol in Wastewater

Catalysts ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 235
Author(s):  
Hayette Benkhennouche-Bouchene ◽  
Julien G. Mahy ◽  
Cédric Wolfs ◽  
Bénédicte Vertruyen ◽  
Dirk Poelman ◽  
...  
Keyword(s):  
Visible Light ◽  
Tio2 Nanoparticles ◽  
Sol Gel ◽  
Visible Region ◽  
Chemical Properties ◽  
Pure Tio2 ◽  
Molar Ratio ◽  
Xps Spectra ◽  
Doped Tio2 ◽  
Co Doped

TiO2 prepared by a green aqueous sol–gel peptization process is co-doped with nitrogen and zirconium to improve and extend its photoactivity to the visible region. Two nitrogen precursors are used: urea and triethylamine; zirconium (IV) tert-butoxide is added as a source of zirconia. The N/Ti molar ratio is fixed regardless of the chosen nitrogen precursor while the quantity of zirconia is set to 0.7, 1.4, 2, or 2.8 mol%. The performance and physico-chemical properties of these materials are compared with the commercial Evonik P25 photocatalyst. For all doped and co-doped samples, TiO2 nanoparticles of 4 to 8 nm of size are formed of anatase-brookite phases, with a specific surface area between 125 and 280 m2 g−1 vs. 50 m2 g−1 for the commercial P25 photocatalyst. X-ray photoelectron (XPS) measurements show that nitrogen is incorporated into the TiO2 materials through Ti-O-N bonds allowing light absorption in the visible region. The XPS spectra of the Zr-(co)doped powders show the presence of TiO2-ZrO2 mixed oxide materials. Under visible light, the best co-doped sample gives a degradation of p-nitrophenol (PNP) equal to 70% instead of 25% with pure TiO2 and 10% with P25 under the same conditions. Similarly, the photocatalytic activity improved under UV/visible reaching 95% with the best sample compared to 50% with pure TiO2. This study suggests that N/Zr co-doped TiO2 nanoparticles can be produced in a safe and energy-efficient way while being markedly more active than state-of-the-art photocatalytic materials under visible light.

scholarly journals In-situ synthesis of CN@La(OH)3 nanocomposite for improved the charge separation and enhanced the photocatalytic activity towards Cr(VI) reduction under visible light

2021 ◽  
pp. 100048
Author(s):  
Amanulla Baishnisha ◽  
Krishnan Divakaran ◽  
Vellaichamy Balakumar ◽  
Venkidusamy Sasirekha ◽  
Chandran Meenakshi ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Charge Separation ◽  
In Situ Synthesis

In situ synthesis of Cl-doped Bi2O2CO3 and its enhancement of photocatalytic activity by inducing generation of oxygen vacancies

2020 ◽  
Vol 7 (16) ◽  
pp. 2969-2978
Author(s):  
Jie-hao Li ◽  
Jie Ren ◽  
Ying Liu ◽  
Hui-ying Mu ◽  
Rui-hong Liu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Ionic Liquids ◽  
Oxygen Vacancy ◽  
Oxygen Vacancies ◽  
In Situ Synthesis ◽  
Photocatalytic Mechanism

Cl-Doped Bi2O2CO3 is prepared using ionic liquids as dopants and the oxygen-vacancy-induced photocatalytic mechanism is revealed.

An alternative to in situ photocatalytic degradation of microcystin-LR by worm-like N, P co-doped TiO2/expanded graphite by carbon layer (NPT-EGC) floating composites

2017 ◽  
Vol 206 ◽  
pp. 479-489 ◽  
Author(s):  
Xin Wang ◽  
Xuejiang Wang ◽  
Jianfu Zhao ◽  
Jingke Song ◽  
Lijie Zhou ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Expanded Graphite ◽  
Carbon Layer ◽  
Doped Tio2 ◽  
Co Doped

In situ synthesis of visible-light-driven Z-scheme AgI/Bi2WO6 heterojunction photocatalysts with enhanced photocatalytic activity

2019 ◽  
Vol 45 (5) ◽  
pp. 6340-6349 ◽  
Author(s):  
Wenjing Xue ◽  
Zhiwei Peng ◽  
Danlian Huang ◽  
Guangming Zeng ◽  
Xiaoju Wen ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
In Situ Synthesis ◽  
Visible Light Driven

In situ synthesis and hydrogen storage properties of PdNi alloy nanoparticles in an ordered mesoporous carbon template

2009 ◽  
Vol 117 (1-2) ◽  
pp. 511-514 ◽  
Author(s):  
R. Campesi ◽  
F. Cuevas ◽  
E. Leroy ◽  
M. Hirscher ◽  
R. Gadiou ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Mesoporous Carbon ◽  
In Situ Synthesis ◽  
Ordered Mesoporous Carbon ◽  
Alloy Nanoparticles ◽  
Hydrogen Storage Properties ◽  
Carbon Template ◽  
Ordered Mesoporous ◽  
Storage Properties
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