The heterojunction effect can effectively improve the separation efficiency of the photocatalyst’s photo-generated electron and hole pairs,thereby greatly improving the photocatalytic hydrogen production performance ...The heterojunction effect can effectively improve the separation efficiency of the photocatalyst’s photo-generated electron and hole pairs,thereby greatly improving the photocatalytic hydrogen production performance of the photocatalyst.In this paper,Bi_(6)O_(6)(OH)_(3)(NO_(3))_(3)·1.5H_(2)O(BBN)and ZnO are used to construct and synthesize Bi_(6)O_(6)(OH)_(3)(NO_(3))_(3)·1.5H_(2)O/ZnO(BBN/ZnO)heterojunction photocatalyst.Under UV-vis light irradiation,the BBN/ZnO composite could generate H_(2)with a rate of 28.66μmol·g^(−1)·h^(−1),which is higher than pure BBN(0.92μmol·g^(−1)·h^(−1))and ZnO(6.54μmol·h^(−1)·g^(−1))at around 31.1 and 4.4 times,respectively.Moreover,the experimental results found that the composite still exhibits excellent photocatalytic activity and maintains a high and stable activity in the 12-hour experiment with 3 cycles.The possible mechanism to enhance the photocatalytic behavior is attributed to the expanded light absorption range,reduced surface migration resistance,and inhibited recombination of photo-generated electron and hole pairs.展开更多
With the increasing demand and excessive use of fossil energy,energy shortage has become a problem in today’s world[1-2].Hydrogen is a clean energy source that can reduce the dependency on traditional fossil fuels,an...With the increasing demand and excessive use of fossil energy,energy shortage has become a problem in today’s world[1-2].Hydrogen is a clean energy source that can reduce the dependency on traditional fossil fuels,and photocatalysis is considered as the most potential hydrogen evolution method[3-5].Bi606(0H)3(N03)3-1.5H20(BHN),an incomplete hydrolysate of Bi(N03)3-5H20,shows good performance in terms of the photocatalytic degradation due to its non-toxicity and corrosion resistance[6-7].展开更多
基金This work was supported by the Natural Science Foundation of Fujian Province[2020J01833]the Fujian Engineering Research Center of New Chinese lacquer Material[No.323030030702]+3 种基金the humbly acknowledge international funding provided by Fujian Agriculture and Forestry University[No.KXB16001A]the Education Research Program for Young and Middle-aged Teachers of Fujian Education Department[No.JAT190132]the open fund of the Key Laboratory of National Forestry&Grassland Bureau for Plant Fiber Functional Materials,Fujian Agriculture and Forestry University[No.2019KFJJ15]Key Laboratory of New Functional Textile Fiber and Material of Fujian Province will open fund project in 2020[MJUKF-FMSM202005,FKLTF 1708].
文摘The heterojunction effect can effectively improve the separation efficiency of the photocatalyst’s photo-generated electron and hole pairs,thereby greatly improving the photocatalytic hydrogen production performance of the photocatalyst.In this paper,Bi_(6)O_(6)(OH)_(3)(NO_(3))_(3)·1.5H_(2)O(BBN)and ZnO are used to construct and synthesize Bi_(6)O_(6)(OH)_(3)(NO_(3))_(3)·1.5H_(2)O/ZnO(BBN/ZnO)heterojunction photocatalyst.Under UV-vis light irradiation,the BBN/ZnO composite could generate H_(2)with a rate of 28.66μmol·g^(−1)·h^(−1),which is higher than pure BBN(0.92μmol·g^(−1)·h^(−1))and ZnO(6.54μmol·h^(−1)·g^(−1))at around 31.1 and 4.4 times,respectively.Moreover,the experimental results found that the composite still exhibits excellent photocatalytic activity and maintains a high and stable activity in the 12-hour experiment with 3 cycles.The possible mechanism to enhance the photocatalytic behavior is attributed to the expanded light absorption range,reduced surface migration resistance,and inhibited recombination of photo-generated electron and hole pairs.
基金supported by the open fund of the Key Laboratory of National Forestry&Grassland Bureau for Plant Fiber Functional Materials,Fujian Agriculture and Forestry University(No.2019KFJJ15)the Open Project Program of Fujian Key Laboratory of Novel Functional Textile Fibers and Materials(Minjiang University)(No.FKLTFM1708).
文摘With the increasing demand and excessive use of fossil energy,energy shortage has become a problem in today’s world[1-2].Hydrogen is a clean energy source that can reduce the dependency on traditional fossil fuels,and photocatalysis is considered as the most potential hydrogen evolution method[3-5].Bi606(0H)3(N03)3-1.5H20(BHN),an incomplete hydrolysate of Bi(N03)3-5H20,shows good performance in terms of the photocatalytic degradation due to its non-toxicity and corrosion resistance[6-7].
