Quantum efficiency of photocatalytic activity by GaN films
Source abstract
Abstract
We have evaluated the quantum efficiency of photocatalytic activity by GaN films using methylene blue decomposition. The quantum efficiency of GaN was found to be comparable to that of TiO2, which is widely used as a general photocatalyst. These results suggest that GaN photocatalysts are effective to decompose not only water but also toxic compounds. Optimized GaN photocatalysts are expected to show even higher photocatalytic activity.
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Research context
OpenAlex topics: Ga2O3 and related materials · Advanced Photocatalysis Techniques · ZnO doping and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Engineering and Applied Sciences, Sophia University , 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan
Funding
Precise Measurement Technology Promotion Foundation · Japan Society of Applied Physics
References (34)
Show source-provided references
1. Photocatalytic activity of gallium nitride for producing hydrogen from water under light irradiation10.1007/s10853-005-5655-8 ↗
2. Photocatalytic overall water splitting on gallium nitride powder10.1246/bcsj.80.1004 ↗
3. Electrochemical photolysis of water at a semiconductor electrode10.1038/238037a0 ↗
4. TiO2 photocatalysis and related surface phenomena10.1016/j.surfrep.2008.10.001 ↗
5. High-brightness InGaN blue, green and yellow light-emitting diodes with quantum well structures10.1143/jjap.34.l797 ↗
6. High-power, long-lifetime InGaN/GaN/AlGaN-based laser diodes grown on pure GaN substrates10.1143/jjap.37.l309 ↗
7. Characteristics of InGaN-based UV/Blue/Green/Amber/Red light-emitting diodes10.1143/jjap.38.3976 ↗
8. Growth of self-organized GaN nanostructures on Al2O3(0001) by RF-radical source molecular beam epitaxy10.1143/jjap.36.l459 ↗
9. Effects of exciton localization on internal quantum efficiency of InGaN nanowires10.1063/1.4825124 ↗
10. Selective-area growth of GaN nanocolumns on Si(111) substrates for application to nanocolumn emitters with systematic analysis of dislocation filtering effect of nanocolumns10.1088/0957-4484/26/22/225602 ↗
11. Carrier-density dependence of photoluminescence from localized states in InGaN/GaN quantum wells in nanocolumns and a thin film10.1063/1.4935025 ↗
12. Wafer-level photocatalytic water splitting on GaN nanowire arrays grown by molecular beam epitaxy10.1021/nl2006802 ↗
13. High stability and efficiency of GaN photocatalyst for hydrogen generation from water10.7567/jjap.51.112601 ↗
14. High efficiency photoelectrochemical water splitting and hydrogen generation using GaN nanowire photoelectrode10.1088/0957-4484/24/17/175401 ↗
15. Highly stable GaN photocatalyst for producing H2 gas from water10.7567/jjap.52.08jh04 ↗
16. InGaN photocatalysts on conductive Ga2O3 substrates10.1002/pssa.201431731 ↗
17. Controllable synthesis of vapor-liquid-solid grown GaN nanowires for photoelectrochemical water splitting applications10.1149/2.0831504jes ↗
18. Group III-nitride nanowire structures for photocatalytic hydrogen evolution under visible light irradiation10.1063/1.4923258 ↗
19. Investigation of water splitting using III-N structures10.1002/pssb.201600744 ↗
20. Enhanced water splitting performance of GaN photoanode using self-assembled nickel/nickel- oxide nanoparticle catalyst10.1016/j.ijhydene.2017.09.108 ↗
21. Efficient light absorption by GaN truncated nanocones for high performance water splitting applications10.1021/acsami.8b09084 ↗
22. Photoelectrochemical hydrogen generation using graded In-content InGaN photoelectrode structures10.1016/j.nanoen.2019.03.011 ↗
23. Photocatalysis using GaN nanowires10.1021/nn700320y ↗
24. Photocatalytic dye degradation properties of wafer level GaN nanowires by catalytic and self-catalytic approach using chemical vapor deposition10.1039/c4ra03642e ↗
25. Decomposition of dioctyl phthalate (DOP) using titanium dioxide photocatalyst in a vacuum10.1117/12.2237259 ↗
26. Analysis of the temperature and excitation intensity dependencies of photoluminescence in undoped GaN film10.1103/physrevb.64.115205 ↗
27. Molten-salt fabrication of (N,F)-codoped single-crystal-like titania with high exposure of (001) crystal facet for highly efficient degradation of methylene blue under visible light irradiation10.1557/jmr.2018.106 ↗
28. An active, robust and transparent nanocrystalline anatase TiO2 thin film – preparation, characterisation and the kinetics of photodegradation of model pollutants10.1016/s1010-6030(01)00526-3 ↗
29. Photoluminescence behaviors of orange-light-emitting InGaN-based nanocolumns exhibiting high internal quantum efficiency (17–22%)10.7567/jjap.52.08jd09 ↗
30. New understanding of the difference of photocatalytic activity among anatase, rutile and brookite TiO210.1039/c4cp02201g ↗
31. 2016
32. A surface science approach to unveiling the TiO2 photocatalytic mechanism: Correlation between photocatalytic activity and carrier lifetime10.1380/ejssnt.2019.130 ↗
33. Optical properties of wurtzite structure GaN on sapphire around fundamental absorption edge (0.78–4.77 eV) by spectroscopic ellipsometry and the optical transmission method10.1063/1.119157 ↗
34. Absorption spectra of anatase TiO2 single crystals heat-treated under oxygen atmosphere10.1016/s0022-3697(99)00424-2 ↗