g-C3N4/NiO photocatalysts were prepared by molten salt method and used melamine as precursor and ZnCl2/NiCl2 salt as reaction medium,respectively.The structure and properties of the photocatalysts were characterized by TEM,XRD and FT-IR.Using a xenon lamp as a light source and soluble dye RhB as the target degradation material,the photocatalytic degradation capability of g-C3N4/NiO was investigated.The results demonstrated that the formation of heterojunction between g-C3N4 and NiO resulted in the enhanced light absorption and efficient charge separation and transfer,thus improving photocatalytic activity.In addition,the photocatalytic degradation performance of g-C3N4/NiO was higher than that of g-C3N4,and g-C3N4/NiO(6) achieved the highest photocatalytic activity.
Wang Yaping, Li Yongyu, Liu Ziying
. Synthesis of g-C3N4/NiO composites and their photocatalytic capability under visible light[J]. New Chemical Materials, 2020
, 48(10)
: 222
-225
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.10.047
[1] 刘勇, 寇璐垚, 付孝锦, 等.ZnFe2O4/g-C3N4对甲基橙的紫外光催化降解行为[J].化工新型材料, 2018, 46(7):202-204.
[2] Masih D, Ma Y, Rohani S.Graphitic C3N4 based noble-metal-free photocatalyst systems:a review[J].Applied Catalysis B:Environmental, 2017, 206:556-588.
[3] Han Q, Hu C, Zhao F, et al.One-step preparation of iodine-doped graphitic carbon nitride nanosheets as efficient photocatalysts for visible light water splitting[J].Journal of Materials Chemistry A, 2015, 3(8):4612-4619.
[4] Guo Y, Liu Q, Li Z, et al.Enhanced photocatalytic hydrogen evolution performance of mesoporous graphitic carbon nitride co-doped with potassium and iodine[J].Applied Catalysis B:Environmental, 2018, 221:362-370.
[5] 从宪玲, 葛博, 赵利民, 等.原位合成法制备Ni/Fe共掺杂g-C3N4及其光催化性能研究[J].化工新型材料, 2018, 46(5):56-59.
[6] Wang K, Wang X, Pan H, et al.In situ fabrication of CDs/g-C3N4 hybrids with enhanced interface connection via calcination of the precursors for photocatalytic H2 evolution[J].International Journal of Hydrogen Energy, 2018, 43(1):91-99.
[7] Liu E, Chen J, Ma Y, et al.Fabrication of 2D SnS2/g-C3N4 heterojunction with enhanced H2 evolution during photocatalytic water splitting[J].Journal of Colloid and Interface Science, 2018, 524:313-324.
[8] 李荣荣, 王锐, 宫红, 等.热聚合法制备ZnO/g-C3N4复合光催化剂及其光催化性能研究[J].化工新型材料, 2017, 45(6):217-219.
[9] Indra A, Acharjya A, Menezes P, et al.Boosting visible-light-driven photocatalytic hydrogen evolution with an integrated nickel phosphide-carbon nitride system[J].Angewandte Chemie International Edition, 2017, 56(6):1653-1657.
[10] Shen R, Xie J, Lu X, et al.Bifunctional Cu3P decorated g-C3N4 nanosheets as a highly active and robust visible-light photocatalyst for H2 production[J].ACS Sustainable Chemistry & Engineering, 2018, 6(3):4026-36.
[11] Chen H, Qiu L, Xiao J, et al.Inorganic-organic hybrid NiO-g-C3N4 photocatalyst for efficient methylene blue degradation using visible light[J].RSC Advance, 2014, 4(43):22491-22496.
[12] Liu X, Fechler N, Antonietti M.Salt melt synthesis of ceramics, semiconductors and carbon nanostructures[J].Chemical Society Reviews, 2013, 42(21):8237-65.
[13] Tian L, Li J, Liang F, et al.Molten salt synthesis of tetragonal carbon nitride hollow tubes and their application for removal of pollutants from wastewater[J].Applied Catalysis B:Environmental, 2018, 225:307-13.
[14] Fettkenhauer C, Clavel G, Kailasam K, et al.Facile synthesis of new, highly efficient SnO2/carbon nitride composite photocatalysts for the hydrogen evolution reaction[J].Green Chemistry, 2015, 17(6):3350-3361.
[15] Fang S, Xia Y, Lv K, et al.Effect of carbon-dots modification on the structure and photocatalytic activity of g-C3N4[J].Applied Catalysis B:Environmental, 2016, 185:225-232.
[16] Fettkenhauer C, Weber J, Antonietti M, et al.Novel carbon nitride composites with improved visible light absorption synthesized in ZnCl2[J].RSC Advance, 2014, 4(77):40803-40811.
[17] Zhao H, Yu H, Quan X, et al.Fabrication of atomic single layer graphitic-C3N4 and its high performance of photocatalytic disinfection under visible light irradiation[J].Applied Catalysis B:Environmental, 2014, 152-153:46-50.
[18] Marichi R B, Sahu V, Lalwani S, et al.Nickel-shell assisted growth of nickel-cobalt hydroxide nanofibres and their symmetric/asymmetric supercapacitive characteristics[J].Journal of Power Sources, 2016, 325:762-771.
[19] 董茹, 陈碧.NiO-g-C3N4异质结光剂的制备及可见光降解印染废水研究[J].印染助剂, 2018, 35(12):30-33.
[20] Wang Y, Li Y, Zhao J, et al.g-C3N4/B doped g-C3N4 quantum dots heterojunction photocatalysts for hydrogen evolution under visible light[J].International Journal of Hydrogen Energy, 2019, 44(2):618-628.
