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【Publication】Yang Wang’s paper got accepted by Nature Communications

Yang Wang's paper, entiled "Piezo-catalysis for nondestructive tooth whitening", got accepted by Nature  Communications.Prof. Yaojin Wang is the corresponding authors. This work was collaborated with Prof. Xuehui Zhang and Dr. Yunyangbai from Peking University School and Hospital of Stomatology. Congratulations! NatureResearch】【The American Ceramic Society】【News Break南理工主页工信部】【江苏教育网搜狐新浪网易腾讯网】【双一流大学网贤集网新材料医疗器械创新网】【企查猫】【招标网】【前瞻网纳米人材料科学与工程】【知乎

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Fig. 1 Piezo-catalysis effect and working principle for tooth whitening. a Illustration of mechanical vibration between toothbrush and teeth during daily toothbrushing. b The traditional abrasive-based toothpaste method, where tooth whitening is realized by the mechanical friction between teeth and abrasive. c The proposed piezo-catalysis effect-based tooth whitening method wherein piezoelectric particles replace traditional abrasive in the toothpaste, to generate reactive oxygen species via piezo-catalysis to bleach tooth stains. The detailed mechanism of piezo-catalysis effect, i.e., d the original electrostatic balance state of a poled piezoelectric material; e the release of screening charges under compressive stress, which combine with water molecules and then produce reactive species; f the modified electrostatic balance state under maximum compressive stress; g the adsorption of charges from the surrounding electrolyte under reduced compressive stress. The charges in the electrolyte with opposite polarity to the adsorbed charges will participate in the redox reaction to produce reactive species.



Yaojin Wang (汪尧进) Laboratory of Advanced Sensitive Materials and Devices
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Department of Materials Science and Engineering.Nanjing University of Science and Technology