Cho, In-Sun Kim, Dong Wook Lee, Sangwook Kwak, Chae Hyun Bae, Shin-Tae Noh, Jun Hong Yoon, Sung Hun Jung, Hyun Suk Kim, Dong-Wan Hong, Kug Sun 2024-01-20T23:00:30Z 2024-01-20T23:00:30Z 2021-09-03 2008-08-11 1616-301X https://pubs.kist.re.kr/handle/201004/133234 Using a wet-chemical method and without any surfactants or templates, various 3D hierarchical superstructures of Cu2PO4OH were synthesized by simply adjusting the pH. The resulting hierarchical superstructures were characterized using X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), high resolution-TEM (HRTEM), Fourier transform infrared spectroscopy (FTIR), Raman, and UV-Vis spectroscopy. With an increase in pH from 2.5 to 7.0, the morphology of Cu2PO4OH varied from microrods to walnut-shaped microspheres of self-assembled nanoparticles. A possible mechanism for the formation of the Cu2PO4OH hierarchical superstructures was also proposed. The optical properties of the Cu2PO4OH hierarchical superstructures were strongly related to their morphologies and the size of the assembled crystallites. We further demonstrated the useful photocatalytic activity of these complex structures in the degradation of methylene blue (MB) dye under visible light irradiation (lambda > 410 nm). The best photocatalytic performance was achieved by Cu2PO4OH with a walnut-shaped morphology due to the excellent absorption of visible light as well as a high BET surface area. English WILEY-V C H VERLAG GMBH COPPER HYDROXYPHOSPHATE NANOCRYSTALS CU-2(OH)PO4 PHOSPHATES OXIDATION SYSTEM OXYGEN Synthesis of Cu2PO4OH hierarchical superstructures with photocatalytic activity in visible light Article 10.1002/adfm.200800167 1 ADVANCED FUNCTIONAL MATERIALS, v.18, no.15, pp.2154 - 2162 ADVANCED FUNCTIONAL MATERIALS 18 15 2154 2162 scie scopus 000258795500002 2-s2.0-50349086520 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article COPPER HYDROXYPHOSPHATE NANOCRYSTALS CU-2(OH)PO4 PHOSPHATES OXIDATION SYSTEM OXYGEN