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https://aperta.ulakbim.gov.tr/records/10103 Synergistic effect of manganese and nitrogen codoping on photocatalytic properties of titania... Titanium dioxide is an n-type semiconductor widely used in applications like catalysts, optoelectonic materials, ceramics, H-2 generation, self-cleaning, water... synergisticeffectmanganesenitrogencodoping https://research-hub.nlr.gov/en/publications/thermodynamics-of-codoping-how-does-it-work/ Thermodynamics of Codoping: How Does it Work? - National Laboratory of the Rockies does itnational laboratorythe rockiesthermodynamicscodoping