g-C_(3)N_(4) coupled with high specific area TiO_(2)(HSA-TiO_(2))composite was prepared by a simple solvothermal method,which was easy to operate with low energy consumption.Degradation of methyl orange test results s...g-C_(3)N_(4) coupled with high specific area TiO_(2)(HSA-TiO_(2))composite was prepared by a simple solvothermal method,which was easy to operate with low energy consumption.Degradation of methyl orange test results showed that HSA-TiO_(2) effectively improved the photocatalytic activity effectively.Photoelectrochemical test results indicated that the separation of photo-generated carriers and the charge carrier migration speed of TiO_(2) were improved after combination with g-C_(3)N_(4).g-C3N4/HSA-TiO_(2) showed strong photocatalytic ability.The degree of degradation of methyl orange by 6%-g-C_(3)N_(4)/HSA-TiO_(2) could reach up to 92.44%.Furthermore,it revealed good cycle performance.The photocatalytic mechanism of g-C_(3)N_(4)/HSA-TiO_(2) was proposed.展开更多
The charge transport behavior of barium fluoride nanocrystals is investigated by in situ impedance measurement up to 35 GPa. It is found that the parameters change discontinuously at about 6.9 GPa, corresponding to th...The charge transport behavior of barium fluoride nanocrystals is investigated by in situ impedance measurement up to 35 GPa. It is found that the parameters change discontinuously at about 6.9 GPa, corresponding to the phase transition of BaF2 nanocrystals under high pressure. The charge carriers in BaF2 nanocrystals include both Fions and electrons. Pressure makes the electronic transport more difficult. The defects at grains dominate the electronic transport process. Pressure could make the charge-discharge processes in the Fm3m phase more difficult.展开更多
基金supported by the National Natural Science Foundation of China(No.61308095,No.21801092,and No.11904128)the Program for the Development of Science and Technology of Jilin province(No.20180520002JH)+1 种基金the Graduate Innovation Project of Jilin Normal University(No.201941)the Key Research Programs in Universities of Henan Province(20A150031).
文摘g-C_(3)N_(4) coupled with high specific area TiO_(2)(HSA-TiO_(2))composite was prepared by a simple solvothermal method,which was easy to operate with low energy consumption.Degradation of methyl orange test results showed that HSA-TiO_(2) effectively improved the photocatalytic activity effectively.Photoelectrochemical test results indicated that the separation of photo-generated carriers and the charge carrier migration speed of TiO_(2) were improved after combination with g-C_(3)N_(4).g-C3N4/HSA-TiO_(2) showed strong photocatalytic ability.The degree of degradation of methyl orange by 6%-g-C_(3)N_(4)/HSA-TiO_(2) could reach up to 92.44%.Furthermore,it revealed good cycle performance.The photocatalytic mechanism of g-C_(3)N_(4)/HSA-TiO_(2) was proposed.
基金Supported by the National Natural Science Foundation of China under Grant Nos 11374131,11674404,11404137 and 61378085the Program for New Century Excellent Talents in University under Grant No NCET-13-0824+1 种基金the Program for the Development of Science and Technology of Jilin Province under Grant Nos 201201079 and 20150204085GXthe Twentieth Five-Year Program for Science and Technology of Education Department of Jilin Province under Grant No 20150221
文摘The charge transport behavior of barium fluoride nanocrystals is investigated by in situ impedance measurement up to 35 GPa. It is found that the parameters change discontinuously at about 6.9 GPa, corresponding to the phase transition of BaF2 nanocrystals under high pressure. The charge carriers in BaF2 nanocrystals include both Fions and electrons. Pressure makes the electronic transport more difficult. The defects at grains dominate the electronic transport process. Pressure could make the charge-discharge processes in the Fm3m phase more difficult.
