Proceedings of Online nanoGe Fall Meeting 20 (OnlineNFM20)
Publication date: 4th October 2020
NaTaO3 is a highly active material for photocatalytic water splitting, although the wide band gap forbids its application under solar light. In order to address this issue, bismuth doping has been proposed as a simple method for band gap narrowing by introducing midgap electron states. In this work, Bi-doped NaTaO3 nanocubes were synthesized through a facile molten salt method, and the photocatalysts exhibit hydrogen evolution under simulated sunlight irradiation (AM 1.5G). X-ray diffraction, Raman and UV-vis spectra suggest that the incorporation of Bi3+ at the Ta-site promotes band gap narrowing, in addition to a structural transition, as the orthorhombic perovskite lattice becomes pseudo-cubic at low dopant concentrations (0.5-4 mol%). Furthermore, 3 mol% Bi-doped NaTaO3 was loaded with Ni co-catalysts by magnetron sputtering deposition, thereby leading to enhanced and stable H2 production rates.
References
1 - 10.1039/C5CP05556C - P. H. Joo, M. Behtash and K. Yang, Phys. Chem. Chem. Phys., 2016, 18, 857–865
2 - 10.1111/j.1551-2916.2008.02869.x - C.-C. Hu, C.-C. Tsai and H. Teng, J. Am. Ceram. Soc., 2009, 92, 460–466
3 - 10.1021/acscatal.5b00484 - L. An and H. Onishi, ACS Catal., 2015, 5, 3196–3206
The authors thank the Sao Paulo Research Foundation (FAPESP) for supporting this work
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.