Abstract
Morphology is a crucial factor in determining the chemical, optical, and electrical properties of nanoscale materials. In this work, we utilized a facile room-temperature deposition method to synthesize three-dimensional (3D) coral-like Ag2S nanostructures. The formation mechanism of 3D coral-like Ag2S nanostructures was proposed by tracking the reaction process. In comparison with 0D Ag2S nanoparticles and 1D Ag2S nanowires of similar size, 3D coral-like Ag2S nanostructures exhibit higher pore volume, photocatalytic activity and cyclic stability for degradation of methyl orange (MO). Surface photovoltage measurement, electrochemical impedance spectroscopy, and Mott–Schottky analysis showed that compared to other Ag2S nanostructures, 3D coral-like Ag2S nanostructures have the strongest surface photovoltaic response, longest carrier lifetime, and highest carrier density.
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Acknowledgements
This work was supported financially by National Magnetic Confinement Fusion Science Program (2011GB112001, 2013GB110001); Program of International S&T Cooperation (2013DFA51050); National Natural Science Foundation of China (51271155, 51377138); Fundamental Research Funds for the Central Universities (2682013CX004, SWJTU11ZT31, 2682013CX004); Science Foundation of Sichuan Province (2011JY0031, 2011JY0130); New Teachers’ Fund for Doctor Stations, Ministry of Education (20120184120024); the 863 Program (No. 2014AA032701); and Analytical & Testing Center of the Southwest Jiaotong University.
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Yuan, L., Lu, S., Yang, F. et al. A facile room-temperature synthesis of three-dimensional coral-like Ag2S nanostructure with enhanced photocatalytic activity. J Mater Sci 54, 3174–3186 (2019). https://doi.org/10.1007/s10853-018-3051-4
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DOI: https://doi.org/10.1007/s10853-018-3051-4