Sulfur and selenium co-doped graphitic carbon nitride(SSCN)with efficient photocatalytic activity was synthesized by synchronously introducing sulfur and selenium atoms into the melon structure of g-C_(3)N_(4)(GCN)via...Sulfur and selenium co-doped graphitic carbon nitride(SSCN)with efficient photocatalytic activity was synthesized by synchronously introducing sulfur and selenium atoms into the melon structure of g-C_(3)N_(4)(GCN)via a facile solid-phase thermal reaction of GCN and SeS_(2).The as-prepared SSCN possesses a larger specific surface area with a richer pore structure that provides more active centers for catalytic reaction.More importantly,the asymmetric structure of SSCN due to introducing sulfur and selenium not only maintains an easier activation ofπ-π*electron transition but also awakens the n-π*electron transition in g-C_(3)N_(4).Moreover,the n-π*electron transition of SSCN can be controlled through changing the amount of SeS_(2),which can greatly extend the photo-response range to 600 nm.As a result,the SSCN samples show an excellent photo-degradation performance for typical antibiotic of tetracycline hydrochloride(TC).The specific degradation route and main intermediates of TC based on liquid chromatograph mass spectrometer(LC-MS)analysis are also investigated and discussed.展开更多
基金supported by the National Natural Science Foundation of China(22008185)Shaanxi Provincial Key Research and Development Program(2022GY-166)Scientific Research Program Funded by Shaanxi Provincial Education Department(19JK0376)。
文摘Sulfur and selenium co-doped graphitic carbon nitride(SSCN)with efficient photocatalytic activity was synthesized by synchronously introducing sulfur and selenium atoms into the melon structure of g-C_(3)N_(4)(GCN)via a facile solid-phase thermal reaction of GCN and SeS_(2).The as-prepared SSCN possesses a larger specific surface area with a richer pore structure that provides more active centers for catalytic reaction.More importantly,the asymmetric structure of SSCN due to introducing sulfur and selenium not only maintains an easier activation ofπ-π*electron transition but also awakens the n-π*electron transition in g-C_(3)N_(4).Moreover,the n-π*electron transition of SSCN can be controlled through changing the amount of SeS_(2),which can greatly extend the photo-response range to 600 nm.As a result,the SSCN samples show an excellent photo-degradation performance for typical antibiotic of tetracycline hydrochloride(TC).The specific degradation route and main intermediates of TC based on liquid chromatograph mass spectrometer(LC-MS)analysis are also investigated and discussed.
