In this study, (GaN)1-x(ZnO)x solid solution nanoparticles with a high zinc content are prepared by ultrasonic spray pyrolysis and subsequent nitridation. The structure and morphology of the samples are investigated by X-ray diffraction (XRD), field-emission scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The characterization results show a phase transition from the Zn and Ga-based oxides (ZnO or ZnGa2O4) to a (GaN)1-x (ZnO)x solid solution under an NH3 atmosphere. The effect of the precursor solution concentration and nitridation temperature on the final products are systematically investigated to obtain (GaN)1-x(ZnO)x nanoparticles with a high Zn concentration. It is confirmed that the powder synthesized from the solution in which the ratio of Zn and Ga was set to 0.8:0.2, as the initial precursor composition was composed of about 0.8-mole fraction of Zn, similar to the initially set one, through nitriding treatment at 700oC. Besides, the synthesized nanoparticles exhibited the typical XRD pattern of (GaN)1-x(ZnO)x, and a strong absorption of visible light with a bandgap energy of approximately 2.78 eV, confirming their potential use as a hydrogen production photocatalyst.

Abstract
1. 서 론
2. 실험방법
3. 결과 및 고찰
4. 결 론
References

• 김정현(서울과학기술대학교 신소재공학과) | Jeong Hyun Kim (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
• 류철희(서울과학기술대학교 신소재공학과) | Cheol-Hui Ryu (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
• 지명준(서울과학기술대학교 신소재공학과) | Myungjun Ji (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
• 최요민(한국산업기술시험원 시스템에너지본부 재료기술센터) | Yomin Choi (Material Technology Center, System & Energy Division, Korea Testing Laboratory)
• 이영인(서울과학기술대학교 신소재공학과) | Young-In Lee (Department of Materials Science and Engineering, Seoul National University of Science and Technology) Corresponding Author