Abstract: Mesoporous g-C3N4 nanosheets (mpg-C3N4) were synthesized via the calcination of melamine pretreated by HCl.The samples were characterized by XRD,FT-IR,TEM,UV-Vis,PL and BET.The photocatalytic activities were evaluated by the photocatalytic disinfection of E.coli.Mpg-C3N4 had similar molecular structure with g-C3N4,but the specific surface area of mpg-C3N4 was much larger than that of g-C3N4 due to the structure of mesoporous and ultrathin nanosheets which restricted the recombination of photogenerated electrons and holes.Therefore,mpg-C3N4 exhibited the more excellent photocatalytic disinfection performances.h+ and ·O-2 were the major active radicals in the photocatalytic disinfection of E.coli.
马占强,宋鹏,石兆勇,侯典云. 介孔石墨相氮化碳纳米片的制备 及光催化抗菌性能研究[J]. 化工新型材料, 2018, 46(10): 134-138.
Ma Zhanqiang,Song Peng,Shi Zhaoyong,Hou Dianyun. Facile preparation of mpg-C3N4 nanosheet for enhanced photocatalytic disinfection performance. New Chemical Materials, 2018, 46(10): 134-138.
 Mu oz-Batista M J,de los Milagros Ballari M,Kubacka A,et al.Acetaldehyde degradation under UV and visible irradiation using CeO2-TiO2 composite systems:evaluation of the photocatalytic efficiencies[J].Chemical Engineering Journal,2014,255:297-306.  Guo Y,Lin S,Li X,et al.Amino acids assisted hydrothermal synthesis of hierarchically structured ZnO with enhanced photocatalytic activities[J].Applied Surface Science,2016,384:83-91.  Yan X,Zhu X,Li R,et al.Au/BiOCl heterojunction within mesoporous silica shell as stable plasmonic photocatalyst for efficient organic pollutants decomposition under visible light[J].Journal of Hazardous Materials,2016,303:1-9.  Xia D,Hu L,He C,et al.Simultaneous photocatalytic elimination of gaseous NO and SO2 in a BiOI/Al2O3-padded trickling scrubber under visible light[J].Chemical Engineering Journal,2015,279:929-938.  Mehedi I M,Hossain M F,Takahashi T,et al.Nano-structural variation of highly aligned anodic Titania nanotube arrays for gas phase photocatalytic application[J].Journal of Photochemistry And Photobiology A:Chemistry,2017,335:200-210.  Sugra ez R,Balbuena J,Cruz-Yusta M,et al.Efficient behaviour of hematite towards the photocatalytic degradation of NOx gases[J].Applied Catalysis B:Environmental,2015,165:529-536.  Shen S,Chen J,Wang X,et al.Microwave-assisted hydrothermal synthesis of transition-metal doped ZnIn2S4 and its photocatalytic activity for hydrogen evolution under visible light[J].Journal of Power Sources,2011,196(23):10112-10119.  Xu L,Sun X,Tu H,et al.Synchronous etching-epitaxial growth fabrication of facet-coupling NaTaO3/Ta2O5 heterostructured nanofibers for enhanced photocatalytic hydrogen production[J].Applied Catalysis B:Environmental,2016,184:309-319.  Kanhere P,Zheng J,Chen Z.Visible light driven photocatalytic hydrogen evolution and photophysical properties of Bi3+ doped NaTaO3[J].International Journal of Hydrogen Energy,2012,37(6):4889-4896.  Iwase A,Yoshino S,Takayama T,et al.Water splitting and CO2 reduction under visible light irradiation using Z-scheme systems consisting of metal sulfides,CoOx-loaded BiVO4,and a eeduced graphene oxide electron mediator[J].Journal of the American Chemical Society,2016,138(32):10260-10264.  Tan L,Ong W,Chai S,et al.Visible-light-active oxygen-rich TiO2 decorated 2D graphene oxide with enhanced photocatalytic activity toward carbon dioxide reduction[J].Applied Catalysis B:Environmental,2015,179:160-170.  Song G,Xin F,Yin X.Photocatalytic reduction of carbon dioxide over ZnFe2O4/TiO2 nanobelts heterostructure in cyclohexanol[J].Journal of Colloid And Interface Science,2015,442:60-66.  Liang J,Shan C,Zhang X,et al.Bactericidal mechanism of BiOI-AgI under visible light irradiation[J].Chemical Engineering Journal,2015,279:277-285.  Ashkarran A A,Hamidinezhad H,Haddadi H,et al.Double-doped TiO2 nanoparticles as an efficient visible-light-active photocatalyst and antibacterial agent under solar simulated light[J].Applied Surface Science,2014,301:338-345.  Wei Z,Liang F,Liu Y,et al.Photoelectrocatalytic degradation of phenol-containing wastewater by TiO2/g-C3N4 hybrid heterostructure thin film[J].Applied Catalysis B:Environmental,2017,201:600-606.  Hassan M S,Amna T,Yang O B,et al.TiO2 nanofibers doped with rare earth elements and their photocatalytic activity[J].Ceramics International,2012,38(7):5925-5930.  Wang X,Maeda K,Thomas A,et al.A metal-free polymeric photocatalyst for hydrogen production from water under visible light[J].Nature Materials,2009,8(1):76-80.  Wu M,Yan J,Zhang X,et al.Ag2O modified g-C3N4 for highly efficient photocatalytic hydrogen generation under visible light irradiation[J].Journal of Materials Chemistry A,2015,3(30):15710-15714.  Fu Y,Huang T,Zhang L,et al.Ag/g-C3N4 catalyst with superior catalytic performance for the degradation of dyes:a borohydride-generated superoxide radical approach[J].Nanoscale,2015,7(32):13723-13733.  Raziq F,Qu Y,Zhang X,et al.Enhanced cocatalyst-free visible-light activities for photocatalytic fuel production of g-C3N4 by trapping holes and transferring electrons[J].The Journal of Physical Chemistry C,2016,120(1):98-107.  Bi L,Xu D,Zhang L,et al.Metal Ni-loaded g-C3N4 for enhanced photocatalytic H2 evolution activity:the change in surface band bending[J].Physical Chemistry Chemical Physics,2015,17(44):29899-29905.  Dong G,Ho W,Li Y,et al.Facile synthesis of porous graphene-like carbon nitride (C6N9H3) with excellent photocatalytic activity for NO removal[J].Applied Catalysis B:Environmental,2015,174-175:477-485.  Xing Z,Chen Z,Zong X,et al.A new type of carbon nitride-based polymer composite for enhanced photocatalytic hydrogen production[J].Chemical Communications,2014,50(51):6762-6764.  Yan S,Li Z,Zou Z.Photodegradation performance of g-C3N4 fabricated by directly heating melamine[J].Langmuir,2009,25(17):10397-10401.  Zhang J,Sun J,Maeda K,et al.Sulfur-mediated synthesis of carbon nitride:band-gap engineering and improved functions for photocatalysis[J].Energy & Environmental Science,2011,4(3):675-678.  Dong G,Zhang L.Porous structure dependent photoreactivity of graphitic carbon nitride under visible light[J].Journal of Materials Chemistry,2012,22(3):1160-1166.  Li X,Guo Z,Li J,et al.Quenched electrochemiluminescence of Ag nanoparticles functionalized g-C3N4 by ferrocene for highly sensitive immunosensing[J].Analytica Chimica Acta,2015,854:40-46.  Lin Q,Li L,Liang S,et al.Efficient synthesis of monolayer carbon nitride 2D nanosheet with tunable concentration and enhanced visible-light photocatalytic activities[J].Applied Catalysis B:Environmental,2015,163:135-142.  She X,Xu H,Xu Y,et al.Exfoliated graphene-like carbon nitride in organic solvents:enhanced photocatalytic activity and highly selective and sensitive sensor for the detection of trace amounts of Cu2+[J].Journal of Materials Chemistry A,2014,2(8):2563-2570.