TiO2-HfN Radial Nano-Heterojunction: A Hot Carrier Photoanode for Sunlight-Driven Water-Splitting
Abstract
:1. Introduction
2. Results and Discussion
2.1. Photoelectrochemical Performance
2.2. Physicochemical Characterization
2.3. Quantum Computation Results
3. Materials and Methods
3.1. TiO2 Nanotube Array Synthesis
3.2. ALD Deposition of Hafnium Nitride
3.3. Materials Characterization
3.4. Photoelectrochemical Measurements
3.5. DFT Modeling
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Sample | Photocurrent (µA/cm2) | Light Intensity (mW/cm2) | Light Spectrum | Applied Bias | Electrolyte | Reference |
---|---|---|---|---|---|---|
HfN-TNT | 1800 | 100 | visible light (>420 nm) | 0.6 V | 1 M KOH | This work |
Ag/N-TiO2 | 26 | 120 | visible light (>420 nm) | 0 V | 0.5 M Na2SO4 | [35] |
AgNPs/TiO2 NWs | 47 | 100 | visible light (>420 nm) | 0.4 V | 0.1 M Na2SO4 | [36] |
In situ AgNPs/TNTs | 40 | 80 | visible light (>420 nm) | 0.3 V | 0.1 M Na2SO4 | [37] |
Ag/N-TiO2 | 0.5 | 500 | 400–900 nm | 0.3 V | 1 M KOH | [38] |
Au/RGO/H-TNTs | 224 | 100 | visible light (>400 nm) | 0.2 V | 1 M KOH | [39] |
LE-Au/TNTs | 202 | 100 | visible light (>400 nm) | 0.2 V | 1 M KOH | [40] |
AuNPs/TiO2 | 23 | 7000 | 532 nm, 633 nm | 0 V | 1 M KOH | [41] |
Au embedded TiO2 | 3 | visible light (>420 nm) | 0.2 V | 1 M KOH + 25% MeOH | [42] | |
AuNPs/TiO2 BNRs | 125 | 100 | visible light (>420 nm) | 0.5 V | 1 M KOH | [43] |
AuNPs/TiO2 NWs | 11 | 73.3 | visible light (>430 nm) | 0 V | 1 M KOH | [44] |
AuNPs/TiO2 PhC | 150 | 100 | visible light (>420 nm) | 0.2 V | 1 M KOH | [45] |
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Zeng, S.; Muneshwar, T.; Riddell, S.; Manuel, A.P.; Vahidzadeh, E.; Kisslinger, R.; Kumar, P.; Alam, K.M.M.; Kobryn, A.E.; Gusarov, S.; et al. TiO2-HfN Radial Nano-Heterojunction: A Hot Carrier Photoanode for Sunlight-Driven Water-Splitting. Catalysts 2021, 11, 1374. https://doi.org/10.3390/catal11111374
Zeng S, Muneshwar T, Riddell S, Manuel AP, Vahidzadeh E, Kisslinger R, Kumar P, Alam KMM, Kobryn AE, Gusarov S, et al. TiO2-HfN Radial Nano-Heterojunction: A Hot Carrier Photoanode for Sunlight-Driven Water-Splitting. Catalysts. 2021; 11(11):1374. https://doi.org/10.3390/catal11111374
Chicago/Turabian StyleZeng, Sheng, Triratna Muneshwar, Saralyn Riddell, Ajay Peter Manuel, Ehsan Vahidzadeh, Ryan Kisslinger, Pawan Kumar, Kazi Mohammad Monirul Alam, Alexander E. Kobryn, Sergey Gusarov, and et al. 2021. "TiO2-HfN Radial Nano-Heterojunction: A Hot Carrier Photoanode for Sunlight-Driven Water-Splitting" Catalysts 11, no. 11: 1374. https://doi.org/10.3390/catal11111374