| 70607 |
Creator |
3d9f5a6838060f791e133fa6e5265b06 |
| 70607 |
Creator |
3e3ebc228f68f67e78c864789ebe89d2 |
| 70607 |
Creator |
ext-46f35b374f967346634abbb4c2c4701a |
| 70607 |
Creator |
ext-5da62dbe37d5edb285dad14cc31ee62c |
| 70607 |
Creator |
ext-86bafc761c994f2f2286b1f5521d2a94 |
| 70607 |
Date |
2020-05-26 |
| 70607 |
Is Part Of |
repository |
| 70607 |
Is Part Of |
p24685194 |
| 70607 |
abstract |
In the present study, pristine BiVO<sub>4</sub>, TiO<sub>2</sub> and BiVO<sub>4</sub>/TiO<sub>2</sub>
core-shell heterostructured nanoparticles are prepared by hydrothermal methods and
studied for structural, morphological, optical, photoelectrochemical water splitting
and photocatalytic degradation of methylene blue as an organic pollutant. Both pristine
BiVO<sub>4</sub> and TiO<sub>2</sub> exhibit poor PEC and PC performance under visible
light illumination. However, an enhanced PEC and PC activity in BiVO<sub>4</sub>/TiO<sub>2</sub>
core-shell heterostructure is observed due to high solar energy absorption and superior
charge separation properties in core-shell nanoparticles. The photoelectrode prepared
using BiVO<sub>4</sub>, TiO<sub>2</sub> core-shell nanoparticles exhibit a photocathode
behavior and produced cathodic photocurrent, however, the pristine BiVO<sub>4</sub>
and TiO<sub>2</sub> photoelectrodes act as photoanode and produced anodic photocurrent.
This behavior of change in current direction is also observe in the Mott-Schottky
analysis where the BiVO<sub>4</sub>, TiO<sub>2</sub> core-shell nanoparticles photoelectrode
exhibits the positive slow showing p-type semiconducting behavior. The change in cathodic
photoresponse in core-shell nanoparticles in comparison to anodic photoresponse of
BiVO<sub>4</sub> and TiO<sub>2</sub> nanoparticles is explained in terms of the variations
in the work function values. These results highlight the advantages of core-shell
nanoparticle of suitable materials for photocatalytic and photoelectrochemical applications. |
| 70607 |
authorList |
authors |
| 70607 |
status |
peerReviewed |
| 70607 |
uri |
http://data.open.ac.uk/oro/document/1136718 |
| 70607 |
uri |
http://data.open.ac.uk/oro/document/1136768 |
| 70607 |
uri |
http://data.open.ac.uk/oro/document/1136769 |
| 70607 |
uri |
http://data.open.ac.uk/oro/document/1136770 |
| 70607 |
uri |
http://data.open.ac.uk/oro/document/1136771 |
| 70607 |
uri |
http://data.open.ac.uk/oro/document/1136772 |
| 70607 |
uri |
http://data.open.ac.uk/oro/document/1137990 |
| 70607 |
volume |
17 |
| 70607 |
type |
AcademicArticle |
| 70607 |
type |
Article |
| 70607 |
label |
Mehta, Mannan; Krishnamurthy, Satheesh ; Basu, Suddhasatwa; Nixon, Tony P. and Singh,
Aadesh P. (2020). BiVO4/TiO2 core-shell heterostructure: wide range optical absorption
and enhanced photoelectrochemical and photocatalytic performance. Materials Today
Chemistry, 17, article no. 100283. |
| 70607 |
Title |
BiVO<sub>4</sub>/TiO<sub>2</sub> core-shell heterostructure: wide range optical absorption
and enhanced photoelectrochemical and photocatalytic performance |
| 70607 |
in dataset |
oro |