K8Ce2I18O53: a novel potassium cerium(iv) iodate with enhanced visible light driven photocatalytic activity resulting from polar zero dimensional [Ce(IO3)8]4− units

2017 ◽  
Vol 46 (13) ◽  
pp. 4170-4173 ◽  
Author(s):  
Ruofei Wu ◽  
Xingxing Jiang ◽  
Mingjun Xia ◽  
Lijuan Liu ◽  
Xiaoyang Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Rare Earth ◽  
Visible Light ◽  
Band Gap ◽  
Narrow Band ◽  
Visible Light Driven

K8Ce2I18O53 shows the highest visible light driven photocatalytic activity among rare earth iodates due to asynergistic effect between the narrow band gap and polar zero-dimensional [Ce(IO3)8]4− units.

Photocatalytic Properties of α-Bi2O3 Nanoneedle Array Synthesized by Hydrothermal Method

2011 ◽  
Vol 181-182 ◽  
pp. 332-335 ◽  
Author(s):  
H.Y. Wang ◽  
Y.C. Yang ◽  
L. Le ◽  
Y. Liu ◽  
J.H. Wei ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Band Gap ◽  
Hydrothermal Method ◽  
Visible Light Irradiation ◽  
Narrow Band ◽  
Light Irradiation ◽  
Nanoneedle Array ◽  
Special Morphology ◽  
Array Structures

Pureα-Bi2O3with nanoneedle array structure was synthesized directly by hydrothermal method. The optic absorption of theα-Bi2O3paricles was cut off at ~483 nm and the band gap of theα-Bi2O3was estimated to be 2.57 eV. The photocatalytic activity of theα-Bi2O3samples was higher than TiO2under a visible light irradiation. As a conclusion, relative narrow band gap ofα-Bi2O3nanoneedle array compared to anatase and the special morphology of nanoneedle array structures may improve the photocatalytic activity in visible light irradiation.

Coupling with a narrow-band-gap semiconductor for the enhancement of visible-light photocatalytic activity: preparation of Bi2OxS3−x/Nb6O17 and application to the degradation of methyl orange

2016 ◽  
Vol 45 (35) ◽  
pp. 13944-13950 ◽  
Author(s):  
Gang Yan ◽  
Hongfei Shi ◽  
Huaqiao Tan ◽  
Wanbin Zhu ◽  
Yonghui Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Visible Light ◽  
Band Gap ◽  
Photocatalytic Performance ◽  
Narrow Band ◽  
Visible Light Photocatalytic Activity ◽  
Degradation Of Methyl Orange ◽  
Visible Light Photocatalytic

A new 2D sheet composite Bi2OxS3−x/Nb6O17 has been prepared, which shows good visible light photocatalytic performance for the degradation of methyl orange.

Nanoporous Ta3N5via electrochemical anodization followed by nitridation for solar water oxidation

2020 ◽  
Vol 49 (42) ◽  
pp. 15023-15033
Author(s):  
Pran Krisna Das ◽  
Maheswari Arunachalam ◽  
Kanase Rohini Subhash ◽  
Young Jun Seo ◽  
Kwang-Soon Ahn ◽  
...  
Keyword(s):  
Visible Light ◽  
Band Gap ◽  
Water Splitting ◽  
Water Oxidation ◽  
Narrow Band ◽  
Tantalum Nitride ◽  
Electrochemical Anodization ◽  
Visible Light Driven ◽  
Solar Water Oxidation ◽  
Pec Water Splitting

Nanoporous tantalum nitride (Ta3N5) is a promising visible-light-driven photoanode for photoelectrochemical (PEC) water splitting with a narrow band gap of approximately 2.0 eV.

Visible-Light Driven BiFeO3 Nanosized Photocatalysts Prepared by a Sol-Gel Process

2011 ◽  
Vol 110-116 ◽  
pp. 1912-1917 ◽  
Author(s):  
Pei Song Tang ◽  
Hai Feng Chen ◽  
Feng Cao ◽  
Guo Xiang Pan ◽  
Min Hong Xu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Specific Surface ◽  
Band Gap ◽  
Surface Area ◽  
Narrow Band ◽  
Sol Gel ◽  
Large Specific Surface Area ◽  
Sol Gel Process ◽  
Visible Light Photocatalytic

The single perovskite BiFeO3 nanoparticles were prepared by a sol-gel process. The BiFeO3 nanoparticles were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-Vis diffuse reflectance spectroscopy, and Brunauer-Emmett-Teller (BET) method. It was found that the prepared BiFeO3 nanoparticles show the large specific surface area of 136 m2/g, and narrow band gap of 2.12 eV. Consequently, BiFeO3 nanoparticles show high visible-light photocatalytic activity for decomposition of methylene blue in comparison with the commercial Degussa P25. It is concluded that the large specific surface area and the narrow band gap contribute to the high visible-light photocatalytic activity through enhanced adsorption capability and visible-light absorption.

Narrow band gap and visible light-driven photocatalysis of V-doped Bi6Mo2O15 nanoparticles

2017 ◽  
Vol 396 ◽  
pp. 1403-1410 ◽  
Author(s):  
Jian Xu ◽  
Chuanxiang Qin ◽  
Yanlin Huang ◽  
Yaorong Wang ◽  
Lin Qin ◽  
...  
Keyword(s):  
Visible Light ◽  
Band Gap ◽  
Narrow Band ◽  
Visible Light Driven

Stable yellow ZnO mesocrystals with efficient visible-light photocatalytic activity

CrystEngComm ◽  
2014 ◽  
Vol 16 (34) ◽  
pp. 7906-7913 ◽  
Author(s):  
Yin Peng ◽  
Yu Wang ◽  
Qing-Guo Chen ◽  
Qing Zhu ◽  
An Wu Xu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Band Gap ◽  
Oxygen Vacancies ◽  
Narrow Band ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

In this work, we present a novel and facile approach to prepare yellow ZnO mesocrystals from Zn(OH)F precursor. The as-prepared yellow ZnO shows a narrow band-gap (Eg = 3.09 eV) and visible-light photocatalytic activity, which is due to the existence of abundant oxygen vacancies and vectorially aligned nanoparticles.

scholarly journals Towards high visible light photocatalytic activity in rare earth and N co-doped SrTiO3: a first principles evaluation and prediction

RSC Advances ◽  
2017 ◽  
Vol 7 (27) ◽  
pp. 16282-16289 ◽  
Author(s):  
Chao Zhang ◽  
Nan Jiang ◽  
Shiai Xu ◽  
Zheng Li ◽  
Xingliang Liu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Rare Earth ◽  
Band Structure ◽  
Visible Light ◽  
Band Gap ◽  
First Principles ◽  
First Principles Calculations ◽  
Visible Light Photocatalytic Activity ◽  
Co Doped ◽  
Visible Light Photocatalytic

The band structure and photocatalytic activity of RE (La, Ce, Pr or Nd) mono-doped and RE–N co-doped SrTiO3 for band gap reduction are studied systematically using first principles calculations.

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