Au Nanostructure-Decorated TiO2 Nanowires Exhibiting Photoactivity Across Entire UV-visible Region for Photoelectrochemical Water Splitting

Nano Letters ◽  
2013 ◽  
Vol 13 (8) ◽  
pp. 3817-3823 ◽  
Author(s):  
Ying-Chih Pu ◽  
Gongming Wang ◽  
Kao-Der Chang ◽  
Yichuan Ling ◽  
Yin-Kai Lin ◽  
...  
Keyword(s):  
Water Splitting ◽  
Visible Region ◽  
Photoelectrochemical Water Splitting ◽  
Tio2 Nanowires ◽  
Uv Visible

scholarly journals Tuning the optoelectronic properties of hematite with rhodium doping for photoelectrochemical water splitting using density functional theory approach

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Abdur Rauf ◽  
Muhammad Adil ◽  
Shabeer Ahmad Mian ◽  
Gul Rahman ◽  
Ejaz Ahmed ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Optical Properties ◽  
Optical Absorption ◽  
Water Splitting ◽  
Density Functional ◽  
Formation Energy ◽  
Visible Region ◽  
Photoelectrochemical Water Splitting ◽  
Theory Approach ◽  
Functional Theory

AbstractHematite (Fe2O3) is one of the best candidates for photoelectrochemical water splitting due to its abundance and suitable bandgap. However, its efficiency is mostly impeded due to the intrinsically low conductivity and poor light absorption. In this study, we targeted this intrinsic behavior to investigate the thermodynamic stability, photoconductivity and optical properties of rhodium doped hematite using density functional theory. The calculated formation energy of pristine and rhodium doped hematite was − 4.47 eV and − 5.34 eV respectively, suggesting that the doped material is thermodynamically more stable. The DFT results established that the bandgap of doped hematite narrowed down to the lower edge (1.61 eV) in the visible region which enhanced the optical absorption and photoconductivity of the material. Moreover, doped hematite has the ability to absorb a broad spectrum (250–800) nm. The enhanced optical absorption boosted the photocurrent and incident photon to current efficiency. The calculated results also showed that the incorporation of rhodium in hematite induced a redshift in optical properties.

Defect-rich decorated TiO2 nanowires for super-efficient photoelectrochemical water splitting driven by visible light

2015 ◽  
Vol 8 (11) ◽  
pp. 3363-3373 ◽  
Author(s):  
Md Anisur Rahman ◽  
Samad Bazargan ◽  
Saurabh Srivastava ◽  
Xiongyao Wang ◽  
Marwa Abd-Ellah ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Conversion Efficiency ◽  
Photoelectrochemical Water Splitting ◽  
Visible Light Region ◽  
Tio2 Nanowires ◽  
High Conversion Efficiency ◽  
Splitting Property ◽  
Onset Potential ◽  
Light Region

Defect-rich 1D TiO2 nanostructures show excellent photoelectrochemical water splitting property in the visible light region with a low onset potential of 0.3 V vs. RHE and a remarkably high conversion efficiency of 3.6%.

Bifunctional doping effect on the TiO2 nanowires for photoelectrochemical water splitting

2013 ◽  
Vol 114 ◽  
pp. 159-164 ◽  
Author(s):  
Hyun Sik Kim ◽  
Dang Thanh Nguyen ◽  
Eui-Chol Shin ◽  
Jong-Sook Lee ◽  
Sang Kwon Lee ◽  
...  
Keyword(s):  
Water Splitting ◽  
Photoelectrochemical Water Splitting ◽  
Doping Effect ◽  
Tio2 Nanowires

High aspect ratio TiO2 nanowires tailored in concentrated HCl hydrothermal condition for photoelectrochemical water splitting

RSC Advances ◽  
2015 ◽  
Vol 5 (65) ◽  
pp. 53012-53018 ◽  
Author(s):  
Jinzhan Su ◽  
Liejin Guo
Keyword(s):  
Aspect Ratio ◽  
Water Splitting ◽  
High Aspect Ratio ◽  
Hydrothermal Condition ◽  
Nanowire Arrays ◽  
Photoelectrochemical Water Splitting ◽  
Optimal Structure ◽  
Tio2 Nanowires

Discrete high aspect ratio TiO2 nanowire arrays were synthesized with its structure as an optimal structure for photoelectrochemical applications.

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