[1] Wang X, Maeda K, Thomas A, et al. A metal-free polymeric photocatalyst for hydrogen production from water under visible light [J]. Nat Mater, 2009, 8(1): 76-80.
[2] Wang X, Maeda K, Chen X, et al. Polymer semiconductors for artificial photosynthesis: hydrogen evolution by mesoporous graphitic carbon nitride with visible light [J]. J Am Chem
Soc, 2009, 131(5): 1680-1681.
[3] Zhao Y, Liu Z, Chu W, et al. Large-scale synthesis of nitrogen-rich carbon nitride microfibers by using graphitic carbon nitride as precursor [J]. Adv Mater, 2008, 20(9): 1777-1781.
[4] Niu P, Zhang L, Liu G, et al. Graphene-like carbon nitride nanosheets for improved photocatalytic activities [J]. Adv Funct Mater, 2012, 22(22): 4763-4770.
[5] Schwinghammer K, Tuffy B, Mesch M B, et al. Triazine-based carbon nitrides for visiblelight-driven hydrogen evolution [J]. Angew Chem Int Ed, 2013, 52(9): 2435-2439.
[6] Yang J, Wang D, Han H, et al. Roles of cocatalysts in photocatalysis and photoelectrocatalysis [J]. ACC Chem Res, 2013, 46(8): 1900-1909.
[7] Schwinghammer K, Mesch M B, Duppel V, et al. Crystalline carbon nitride nanosheets for improved visible-light hydrogen evolution [J]. J Am Chem Soc, 2014, 136(5): 1730-1733.

[8] Chen X, Zhang J, Fu X, et al. Fe-g-C₃N₄-catalyzed oxidation of benzene to phenol using hydrogen peroxide and visible light [J]. J Am Chem Soc, 2009, 131(33): 11658-11659.
[9] Kudo A, Miseki Y. Heterogeneous photocatalyst materials for water splitting [J]. Chem Soc Rev, 2009, 38(1): 253-278.
[10] Chen X, Shen S, Guo L, et al. Semiconductor-based photocatalytic hydrogen generation [J]. Chem Rev, 2010, 110(11): 6503-6570.
[11] Yang S, Gong Y, Zhang J, et al. Exfoliated graphitic carbon nitride nanosheets as efficient catalysts for hydrogen evolution under visible light [J]. Adv Mater, 2013, 25(17): 2452-2456.
[12] Zheng Y, Liu J, Liang J, et al. Graphitic carbon nitride materials: controllable synthesis and applications in fuel cells and photocatalysis [J]. Energy Environ Sci, 2012, 5(5): 6717-6731.
[13] Cao S, Yu J. g-C₃N₄-based photocatalysts for hydrogen generation [J]. J Phys Chem Lett, 2014,
5(12): 2101-2107.
[14] Ge L, Han C, Liu J, et al. Enhanced visible light photocatalytic activity of novel polymeric g-C₃N₄ loaded with Ag nanoparticles [J]. Appl Catal A: Gen, 2011, 409/410(1): 215-222.
[15] Chang C, Fu Y, Hu M, et al. Photodegradation of bisphenol A by highly stable palladium-doped mesoporous graphite carbon nitride (Pd/mpg-C₃N₄) under simulated solar light irradiation [J]. Appl Catal B: Environ, 2013, 142/143(1): 553-560.
[16] Cheng N, Tian J, Liu Q, et al. Au-nanoparticle-loaded graphitic carbon nitride nanosheets: green photocatalytic synthesis and application toward the degradation of organic pollutants [J]. ACS Appl Mater Interfaces, 2013, 5(15): 6815-6819.
[17] Tonda S, Kumar S, Kandula S, et al. Fe-doped and -mediated graphitic carbon nitride nanosheets for enhanced photocatalytic performance under natural sunlight [J]. J Mater Chem
A, 2014, 2(19): 6772-6780.
[18] Wang X, Chen X, Thomas A, et al. Metal-containing carbon nitride compounds: a new functional organic-metal hybrid material [J]. Adv Mater, 2009, 21(16): 1609-1612.
[19] Xu J, Brenner T J K, Chen Z, et al. Upconversion-agent induced improvement of g-C₃N₄ photocatalyst under visible light [J]. ACS Appl Mater Interfaces, 2014, 6(19): 16481-16486.
[20] Yan S C, Li Z S, Zou Z G. Photodegradation of Rhodamine B and methyl orange over borondoped g-C₃N₄ under visible light irradiation [J]. Langmuir, 2010, 26(6): 3894-3901.
[21] Li J, Shen B, Hong Z, et al. A facile approach to synthesize novel oxygen-doped g-C₃N₄ with superior visible-light photoreactivity [J]. Chem Commun, 2012, 48(98): 12017-12019.
[22] Liu G, Niu P, Sun C, et al. Unique electronic structure induced high photoreactivity of sulfurdoped graphitic C₃N₄[J]. J Am Chem Soc, 2010, 132(33): 11642-11648.
[23] Li J, Cao C, Zhu H. Synthesis and characterization of graphite-like carbon nitride nanobelts and nanotubes [J]. Nanotechnology, 2007, 18(11): 115605.
[24] Liu J, Huang J, Zhou H, et al. Uniform graphitic carbon nitride nanorod for efficient photocatalytic hydrogen evolution and sustained photoenzymatic catalysis [J]. ACS Appl Mater Interfaces, 2014, 6(11): 8434-8440.
[25] Wang W, Yu J C, Shen Z, et al. g-C₃N₄ quantum dots: direct synthesis, upconversion properties and photocatalytic application [J]. Chem Commun, 2014, 50(70): 10148-10150.

[26] Xiang Q, Yu J, Jaroniec M. Preparation and enhanced visible-light photocatalytic H₂-production activity of graphene/C₃N₄ composites [J]. J Phys Chem C, 2011, 115(15): 7355-7363.
[27] Ge L, Han C. Synthesis of MWNTs/g-C₃N₄ composite photocatalysts with efficient visible light photocatalytic hydrogen evolution activity [J]. Appl Catal B: Environ, 2012, 117/118(1):
268-274.
[28] Huang Z, Li F, Chen B, et al. Well-dispersed g-C₃N₄ nanophases in mesoporous silica channels and their catalytic activity for carbon dioxide activation and conversion [J]. Appl Catal B: Environ, 2013, 136/137(1): 269-277.
[29] Wang W, Yu J C, Xia D, et al. Graphene and g-C₃N₄ nanosheets cowrapped elemental a-sulfur as a novel metal-free heterojunction photocatalyst for bacterial inactivation under
visible-light [J]. Environ Sci Technol, 2013, 47(15): 8724-8732.
[30] Kumar S, Surendar T, Baruah A, et al. Synthesis of a novel and stable g-C₃N₄-Ag₃PO₄ hybrid nanocomposite photocatalyst and study of the photocatalytic activity under visible light
irradiation [J]. J Mater Chem A, 2013, 1(17): 5333-5340.
[31] Xu X, Liu G, Randorn C, et al. g-C₃N₄ coated SrTiO₃ as an efficient photocatalyst for H₂ production in aqueous solution under visible light irradiation [J]. Int J Hydrogen Energ, 2011,
36(21): 13501-13507.
[32] Ge L, Han C, Liu J. Novel visible light-induced g-C₃N₄/Bi₂WO₆ composite photocatalysts for efficient degradation of methyl orange [J]. Appl Catal B: Environ, 2011, 108/109(1): 100-107.
[33] Wang Y, Shi R, Lin J, et al. Enhancement of photocurrent and photocatalytic activity of ZnO hybridized with graphite-like C₃N₄[J]. Energy Environ Sci, 2011, 4(8): 2922-2929.
[34] Hou Y, Laursen A B, Zhang J, et al. Layered nanojunctions for hydrogen-evolution catalysis [J]. Angew Chem Int Ed, 2013, 52(13): 3621-3625.
[35] Zhao Z, Sun Y, Dong F. Graphitic carbon nitride based nanocomposites: a review [J]. Nanoscale, 2015, 7(1): 15-37.
[36] Zhang Y, Zhang H, Cheng L, et al. Vacuum-treated Mo, S-doped TiO2:Gd mesoporous nanospheres: an improved visible light photocatalyst [J]. Eur J Inorg Chem, 2015(17): 2895-
2900.
[37] Xia T, Zhang W, Murowchick J B, et al. A facile method to improve the photocatalytic and lithium-ion rechargeable battery performance of TiO₂ nanocrystals [J]. Adv Energy Mater,
2013, 3(11): 1516-1523.
[38] Chen X, Liu L, Yu P Y, et al. Increasing solar absorption for photocatalysis with black hydrogenated titanium dioxide nanocrystals [J]. Science, 2011, 331(6018): 746-750.
[39] Shi W Y, Jiao Z, Gu J Z, et al. Degradation characteristic of 4-bromdiphenyl ether in mixed solutions by electron beam irradiation [J]. J Shanghai Univ (Engl Ed), 2010, 14(2): 89-93.
[40] Jun J, Dhayal M, Shin J H, et al. Surface properties and photoactivity of TiO2 treated with electron beam [J]. Radiat Phys Chem, 2006, 75(5): 583-589.
[41] Khan M M, Ansari S A, Pradhan D, et al. Band gap engineered TiO₂ nanoparticles for visible light induced photoelectrochemical and photocatalytic studies [J]. J Mater Chem A, 2014, 2(3): 637-644.

[42] Zhang Y, Liu J, Wu G, et al. Porous graphitic carbon nitride synthesized via direct polymerization of urea for efficient sunlight-driven photocatalytic hydrogen production [J]. Nanoscale,
2012, 4(17): 5300-5303.
[43] Yan S C, Li Z S, Zou Z G. Photodegradation performance of g-C₃N₄ fabricated by directly heating melamine [J]. Langmuir, 2009, 25(17): 10397-10401.
[44] Yuan Y P, Yin L S, Cao S W, et al. Microwave-assisted heating synthesis: a general and rapid strategy for large-scale production of highly crystalline g-C₃N₄ with enhanced photocatalytic H₂ production [J]. Green Chem, 2014, 16(11): 4663-4668.
[45] Xu J, Wang Y, Zhu Y. Nanoporous graphitic carbon nitride with enhanced photocatalytic performance [J]. Langmuir, 2013, 29(33): 10566-10572.
[46] Bai X, Wang L, Zong R, et al. Photocatalytic activity enhanced via g-C₃N₄ nanoplates to nanorods [J]. J Phys Chem C, 2013, 117(19): 9952-9961.
[47] Yang F, Kuznietsov V, Lublow M, et al. Solar hydrogen evolution using metal-free photocatalytic polymeric carbon nitride/CuInS2 composites as photocathodes [J]. J Mater Chem A,
2013, 1(21): 6407-6415.
[48] Zhang Y, Pan Q, Chai G, et al. Synthesis and luminescence mechanism of multicolor-emitting g-C₃N₄ nanopowders by low temperature thermal condensation of melamine [J]. Sci Rep, 2013, 3(1): 1943.
[49] Wang X L, FangWQ,Wang H F, et al. Surface hydrogen bonding can enhance photocatalytic H₂ evolution efficiency [J]. J Mater Chem A, 2013, 1(45): 14089-14096.
[50] Shiraishi Y, Kanazawa S, Sugano Y, et al. Highly selective production of hydrogen peroxide on graphitic carbon nitride (g-C₃N₄) photocatalyst activated by visible light [J]. ACS Catal,
2014, 4(3): 774-780.
[51] Chen Y, Li J, Hong Z, et al. Origin of the enhanced visible-light photocatalytic activity of CNT modified g-C₃N₄ for H₂ production [J]. Phys Chem Chem Phys, 2014, 16(17): 8106-8113.
[52] Martin D J, Qiu K, Shevlin S A, et al. Highly efficient photocatalytic H₂ evolution from water using visible light and structure-controlled graphitic carbon nitride [J]. Angew Chem Int Ed,
2014, 53(35): 9240-9245.
[53] Ming L, Yue H, Xu L, et al. Hydrothermal synthesis of oxidized g-C₃N₄ and its regulation of photocatalytic activity [J]. J Mater Chem A, 2014, 2(45): 19145-19149.
[54] Jürgens B, Irran E, Senker J, et al. Melem (2,5,8-triamino-tri-s-triazine), an important intermediate during condensation of melamine rings to graphitic carbon nitride: synthesis, structure determination by X-ray powder diffractometry, solid-state NMR, and theoretical studies [J]. J Am Chem Soc, 2003, 125(34): 10288-10300.
[55] Kroke E, Schwarz M, Horath-Bordon E, et al. Tri-s-triazine derivatives. Part Ⅰ. From trichloro-tri-s-triazine to graphitic C₃N₄ structures [J]. New J Chem, 2002, 26(5): 508-512.