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Full-Text Articles in Physical Sciences and Mathematics
Biocompatible Bi(Oh)3nanoparticles With Reduced Photocatalytic Activityas Possible Ultraviolet Filter In Sunscreens, Kathrin Bogusz, Dean Cardillo, Moeava Tehei, Tifenn Boutard, Philip J. Barker, Thierry Devers, Anatoly B. Rosenfeld, Shi Xue Dou, Hua-Kun Liu, Konstantin K. Konstantinov
Biocompatible Bi(Oh)3nanoparticles With Reduced Photocatalytic Activityas Possible Ultraviolet Filter In Sunscreens, Kathrin Bogusz, Dean Cardillo, Moeava Tehei, Tifenn Boutard, Philip J. Barker, Thierry Devers, Anatoly B. Rosenfeld, Shi Xue Dou, Hua-Kun Liu, Konstantin K. Konstantinov
Australian Institute for Innovative Materials - Papers
In this study we investigate readily synthesised Bi(OH)3nanoparticles as a novel, multifunctional ultraviolet filter for sunscreen. The absorbance of Bi(OH)3NPs in the ultraviolet region is comparable to that of both ZnO and TiO2NPs used in commercial sunscreens. In vitro photoprotection results show that the combination of TiO2/Bi(OH)3is more efficient than TiO2/ZnO over the whole UV range, with an increase in sun protection factor of 28%. The emulsions show rheological properties comparable to those of commercial sunscreens. The combination of TiO2/Bi(OH)3led to insignificant damage on pre-painted steel panels after exterior exposure for twelve weeks. We also demonstrate that the addition of …
Engineering Surface Amine Modifiers Of Ultrasmall Gold Nanoparticles Supported On Reduced Graphene Oxide For Improved Electrochemical Co2 Reduction, Yong Zhao, Caiyun Wang, Yuqing Liu, Douglas R. Macfarlane, Gordon G. Wallace
Engineering Surface Amine Modifiers Of Ultrasmall Gold Nanoparticles Supported On Reduced Graphene Oxide For Improved Electrochemical Co2 Reduction, Yong Zhao, Caiyun Wang, Yuqing Liu, Douglas R. Macfarlane, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Ultrasmall gold (Au) nanoparticles with high mass activity have great potential for practical applications in CO2electroreduction. However, these nanoparticles often suffer from poor product selectivity since their abundant low-coordinated sites are favorable for H2evolution. In this work, a catalyst, reduced graphene oxide supported ultrasmall Au nanoparticles (≈2.4 nm) is developed which delivers high Au-specific mass activities (>100 A g-1) and good Faradaic efficiencies (32-60%) for the CO2-to-CO conversion at moderate overpotentials (450-600 mV). The efficiencies can be improved to 59-75% while retaining the ultrahigh mass activities via a simple amine-modification strategy. In addition, an amine-structure-dependent effect is revealed: linear …