Fig. 3: Investigations on the relationship between milling speed and degradation rate. | Nature Communications

Fig. 3: Investigations on the relationship between milling speed and degradation rate.

From: A contact-electro-catalysis process for producing reactive oxygen species by ball milling of triboelectric materials

Fig. 3: Investigations on the relationship between milling speed and degradation rate.

a Evolution of relative concentration of methyl orange (MO) aqueous solution in condition of different milling speeds. The relative concentration is calculated based on the absorbance of MO that measured by UV-Vis spectroscopy. b Influence of ball sizes on the degradation rate. PTFE is short for polytetrafluoroethylene, and the subsequent number is the diameter of used PTFE balls. The degradation rate is defined as the percentage of reduced absorbance of MO. c Comparison of degradation rate when different triboelectric materials were utilized. PP is short for polypropylene, and PDMS for polydimethylsiloxane. The size of milling balls is 5 mm in this investigation. d–f EPR profiles of different groups under 50 RPM (d), 150 RPM (e), and 350 RPM (f) revolution speeds. Error bars represent standard deviation based on three replicate data. Source data are provided as a Source Data file.

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