Reversible Photovoltage Generation Using Metastable-State Photoacids in the Solid State with Visible Light

2021 ◽  
Author(s):  
Parth K. Patel ◽  
Marcos V. Foguel ◽  
Percy Calvo-Marzal ◽  
Karin Y. Chumbimuni-Torres
Keyword(s):  
Solid State ◽  
Visible Light ◽  
Metastable State

Visible Light Metastable-State Photoacid for Reversible Photovoltage Generation in Solid-State

2021 ◽  
Vol MA2021-02 (5) ◽  
pp. 1968-1968
Author(s):  
Ali Haghighat Mesbahi ◽  
Parth K. Patel ◽  
Marcos V. Foguel ◽  
Percy Calvo-Marzal ◽  
Karin Chumbimuni-Torres
Keyword(s):  
Solid State ◽  
Visible Light ◽  
Metastable State

scholarly journals Fluorinated azobenzenes as supramolecular halogen-bonding building blocks

2019 ◽  
Vol 15 ◽  
pp. 2013-2019 ◽  
Author(s):  
Esther Nieland ◽  
Oliver Weingart ◽  
Bernd M Schmidt
Keyword(s):  
Solid State ◽  
Dft Calculations ◽  
Visible Light ◽  
Half Life ◽  
Photophysical Properties ◽  
Bathochromic Shift ◽  
Halogen Bonding ◽  
Building Blocks ◽  
Partial Overlap

ortho-Fluoroazobenzenes are a remarkable example of bistable photoswitches, addressable by visible light. Symmetrical, highly fluorinated azobenzenes bearing an iodine substituent in para-position were shown to be suitable supramolecular building blocks both in solution and in the solid state in combination with neutral halogen bonding acceptors, such as lutidines. Therefore, we investigate the photochemistry of a series of azobenzene photoswitches. Upon introduction of iodoethynyl groups, the halogen bonding donor properties are significantly strengthened in solution. However, the bathochromic shift of the π→π* band leads to a partial overlap with the n→π* band, making it slightly more difficult to address. The introduction of iodine substituents is furthermore accompanied with a diminishing thermal half-life. A series of three azobenzenes with different halogen bonding donor properties are discussed in relation to their changing photophysical properties, rationalized by DFT calculations.

Facile Solid State Method Route Synthesis and Enhance Visible Light Activities of BiVO4 by Doping Co

2016 ◽  
Vol 703 ◽  
pp. 316-320
Author(s):  
Hai Feng Chen ◽  
Jing Ling Hu ◽  
Bing Xu
Keyword(s):  
Solid State ◽  
Visible Light ◽  
Catalytic Effect ◽  
Catalytic Properties ◽  
Raw Materials ◽  
X Ray Diffraction ◽  
Solid State Method ◽  
Illumination Time ◽  
X Ray ◽  
State Method

Using NH4VO3, Bi (NO3)3•5H2O and Co (NO3)2•6H2O as raw materials, Co doped BiVO4 (Co/BiVO4) photocatalysts were successfully prepared by solid state method. And the photo catalytic properties were test in this work. Crystal structures of these samples were characterized by X-ray diffraction (XRD). The Methyl Orange (MO) was simulated as the sewage under the visible light to explorer the influence of the illumination time and the mass of photocatalyst. The visible-light absorption spectrum of BiVO4 was broadening with doping Co. It was found that the Co/BiVO4 had higher photocatalytic activity than pure BiVO4 .The reason of enhanced catalytic effect also had been analyzed and discussed in the article.

Carbon dots as solid-state electron mediator for BiVO4/CDs/CdS Z-scheme photocatalyst working under visible light

2017 ◽  
Vol 206 ◽  
pp. 501-509 ◽  
Author(s):  
Xiuqin Wu ◽  
Juan Zhao ◽  
Liping Wang ◽  
Mumei Han ◽  
Mengling Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Visible Light ◽  
Carbon Dots ◽  
Electron Mediator ◽  
Solid State Electron ◽  
State Electron

scholarly journals A heterojunction photocatalyst composed of zinc rhodium oxide, single crystal-derived bismuth vanadium oxide, and silver for overall pure-water splitting under visible light up to 740 nm

2016 ◽  
Vol 18 (40) ◽  
pp. 27754-27760 ◽  
Author(s):  
Ryoya Kobayashi ◽  
Toshihiro Takashima ◽  
Satoshi Tanigawa ◽  
Shugo Takeuchi ◽  
Bunsho Ohtani ◽  
...  
Keyword(s):  
Solid State ◽  
Visible Light ◽  
Vanadium Oxide ◽  
Single Crystal ◽  
Water Splitting ◽  
Pure Water ◽  
Red Light ◽  
Rhodium Oxide

We have prepared a solid-state heterojunction photocatalyst, which can split pure water under red light up to 740 nm.

Preparation and Photocatalytic Activity of Cu/BiVO4 by Solid State Grinding Method for Degradation of Methyl Orange

2016 ◽  
Vol 703 ◽  
pp. 321-325
Author(s):  
Hai Feng Chen ◽  
Jia Mei Chen ◽  
Zhi Xue Pan
Keyword(s):  
Methyl Orange ◽  
Solid State ◽  
Visible Light ◽  
Raw Materials ◽  
X Ray Diffraction ◽  
Visible Absorption ◽  
Illumination Time ◽  
Grinding Method ◽  
Ft Ir ◽  
Degradation Of Methyl Orange

In this work, novel Cu/BiVO4 photocatalyst were prepared by a low-temperature solid state grinding method using Bi (NO3)3•5H2O, NH4VO3 and Cu (NO3)2•2H2O as raw materials. The structure and properties of the samples were characterized by Infrared Spectroscopy (FT-IR), X-ray diffraction (XRD) and UV-vis diffused reflectance spectroscopy (DRS); Using the degradation of methyl orange (MO) as the probe, it was simulated as the degradation of sewage under the visible light to study the influence of the illumination time and the amount of photocatalysts. Compared with the pure BiVO4, the visible-light absorption scope of BiVO4 was broadened by doping Cu, the UV-Visible absorption edges were slightly red shift and the band gap was narrower. Comparatively speaking, the results indicted that the doped Cu enhanced the photocatalytic activities of BiVO4.

Top-down fabrication of Ti doped BiVO4 nanosheets for efficient water oxidation under visible light

2021 ◽  
Author(s):  
Bei Peng ◽  
Yawen Shi ◽  
Xin Zhang ◽  
Peiwen Lv
Keyword(s):  
Solid State ◽  
Ion Exchange ◽  
Visible Light ◽  
Exchange Reaction ◽  
Solid State Reaction ◽  
Water Oxidation ◽  
Photocatalytic Properties ◽  
Top Down ◽  
Ion Exchange Reaction

BiVO4 is one of the fascinating materials with excellent photocatalytic properties. A top-down approach composed of solid state reaction and ion exchange reaction is introduced to fabricate Ti doped BiVO4...

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