In the area of sunscreens we explore the photostability of organic sunscreen ingredients and in the case of Titanium dioxide we develop strategies to prevent adverse effects. Interestingly our experience in catalysis , has helped us develop better potential sunscreen active ingredients.
A key paper from our group in 2012 demonstrated that silver nanoparticles (at the same total concentration) are more effective than silver ions as antibacterial, thus dispelling the traditional idea that nanoparticles are simply suppliers of soluble ions.
Several studies followed, including the demonstration that bimetallic particles such as gold with a silver shell can show antibacterial properties that can be enhanced by visible light irradiation of the gold plasmon (usually with green light). Remarkably, there interesting particles can be stabilized with aspartame, a common, inexpensive and non-toxic sweetener.
JACS, 2014, 136, 17394.