Phosphorus-doped carbon nitride material, preparation method and application thereof
A carbon nitride and phosphorus doping technology, applied in the field of photocatalytic degradation, can solve the problems of small specific surface area, unfavorable light energy full utilization, high photo-induced hole and electron recombination rate, and achieve simple preparation method and excellent degradation effect , the effect of cheap raw materials
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[0040] In yet another specific embodiment of the present invention, the preparation method of the above-mentioned phosphorus-doped carbon nitride material is provided, and the preparation method includes:
[0041] It is obtained by mixing carbon source and phosphorus source for hydrothermal reaction, and then calcining.
[0042] Wherein, the carbon source includes melamine, urea or thiourea; preferably melamine;
[0043] The phosphorus source includes, but is not limited to, phosphoric acid, ammonium monohydrogen phosphate, ammonium dihydrogen phosphate, sodium phosphate, sodium monohydrogen phosphate, and sodium dihydrogen phosphate; phosphoric acid is preferred.
[0044] In yet another specific embodiment of the present invention, the molar ratio of the carbon source to the phosphorus source is 1g:0.8-8mmol;
[0045] In yet another specific embodiment of the present invention, the hydrothermal reaction conditions are: react at 150-200°C for 10-14 hours, preferably at 180°C fo...
Embodiment
[0055] 1. Materials and methods
[0056] 1.1 Materials
[0057] Melamine, urea, thiourea, and phosphoric acid (analytical grade) were purchased from Sinopharm. Dinotefuran and its enantiomer standard (purity>98%) were purchased from Shanghai Qinlu Biotechnology Co., Ltd. tert-butanol, potassium iodide and benzoquinone were purchased from Aladdin Chemical Reagent Company.
[0058] 1.2 Material preparation
[0059] Disperse 10.0 g of melamine in different concentrations of phosphoric acid aqueous solution (80 mL, 0, 0.1, 0.5 and 1.0 mol L -1 ), stirred for 20 minutes, transferred the mixed solution to a high-temperature reaction kettle, and subjected to hydrothermal reaction at 180° C. for 12 hours. After the product was dried and washed with water, it was calcined in a muffle furnace at 550°C for 4 hours to obtain the material HPCN x (respectively HPCN 0 ;HPCN 0.1 ;HPCN 0.5 ;HPCN 1.0 ). At the same time, different carbon sources were directly calcined at high temperat...
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