[1] ALAGHMANDFARD A, GHANDI K. A comprehensive review of graphitic carbon nitride (g-C₃N₄)-metal oxide-based nanocomposites: potential for photocatalysis and sensing[J]. Nanomaterials, 12(2022).

[2] ZHAO B, ZHONG W, CHEN F et al. High-crystalline g-C₃N₄ photocatalysts: synthesis, structure modulation, and H₂-evolution application[J]. Chinese Journal of Catalysis, 52, 127(2023).

[3] KHARLAMOV A, BONDARENKO M, KHARLAMOVA G et al. Synthesis of reduced carbon nitride at the reduction by hydroquinone of water-soluble carbon nitride oxide (g-C₃N₄)O[J]. Journal of Solid State Chemistry, 241, 115(2016).

[4] 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, 44(2019).

[5] JING L Q, XU Y G, XIE M et al. Cyano-rich g-C₃N₄ in photochemistry: design, applications, and prospects[J]. Small, 20, 2304404(2024).

[6] RUAN L W, XU G H, GU L N et al. The physical properties of Li-doped g-C₃N₄ monolayer sheet investigated by the first-principles[J]. Materials Research Bulletin, 66, 156(2015).

[7] LIU G, YAN S, SHI L et al. The improvement of photocatalysis H₂ evolution over g-C₃N₄ with Na and cyano-group Co-modification[J]. Frontiers in Chemistry, 7, 639(2019).

[8] JIANG J, CAO S, HU C et al. A comparison study of alkali metal doped g-C₃N₄ for visible-light photocatalytic hydrogen evolution[J]. Chinese Journal of Catalysis, 38(2017).

[9] ISMAEL M. A review on graphitic carbon nitride (g-C₃N₄) based nanocomposites: synthesis, categories, and their application in photocatalysis[J]. Journal of Alloys and Compounds, 846(2020).

[10] ZHENG J F, XU Z, XIN S T et al. Low-temperature molten salt synthesis of Na, K-codoped g-C₃N₄ Fenton-like catalyst with remarkable TCH degradation performance in a wide pH range[J]. Materials Letters, 325, 132912(2022).

[11] MORI K, TATSUMI D, IWAMOTO T et al. Ruthenium(ii) bipyridine nano C₃N₄ hybrids: tunable photochemical properties by using exchangeable alkali metal cations[J]. Chemistry-An Asian Journal, 13(2018).

[12] SANO T, TSUTSUI S, KOIKE K et al. Activation of graphitic carbon nitride (g-C₃N₄) by alkaline hydrothermal treatment for photocatalytic NO oxidation in gas phase[J]. Journal of Materials Chemistry A, 1(2013).

[13] KUMAR A, KASHYAP S, SHARMA M et al. Tuning the surface and optical properties of graphitic carbon nitride by incorporation of alkali metals (Na, K, Cs and Rb): effect on photocatalytic removal of organic pollutants[J]. Chemosphere, 287, 131988(2022).

[14] XU Y G, GE F Y, CHEN Z G et al. One-step synthesis of Fe-doped surface-alkalinized g-C₃N₄ and their improved visible-light photocatalytic performance[J]. Applied Surface Science, 469, 739(2019).

[15] SUDRAJAT H. A one-pot, solid-state route for realizing highly visible light active Na-doped g-C₃N₄ photocatalysts[J]. Journal of Solid State Chemistry, 257, 26(2018).

[16] XU Y, GONG Y, REN H et al. In situ structural modification of graphitic carbon nitride by alkali halides and influence on photocatalytic activity[J]. RSC Advances, 7(2017).

[17] LIU Y M, ZHANG X, WANG J P et al. Preparation of luminescent graphitic C₃N₄ NS and their composites with RGO for property controlling[J]. RSC Advances, 6(2016).

[18] GUAN Y H, HU S Z, GU G Z et al. Alkali hydrothermal treatment to tynthesize hydroxyl modified g-C₃N₄ with outstanding photocatalytic phenolic compounds oxidation ability[J]. Nano: Brief Reports and Reviews, 15(2024).

[19] ZHANG L S, DING N, HASHIMOTO M et al. Sodium-doped carbon nitride nanotubes for efficient visible light-driven hydrogen production[J]. Nano Research, 11(2018).

[20] XU J Y, LI Y X, PENG S Q et al. Eosin Y-sensitized graphitic carbon nitride fabricated by heating urea for visible light photocatalytic hydrogen evolution: the effect of the pyrolysis temperature of urea[J]. Physical Chemistry Chemical Physics, 15(2013).

[21] HU C, TSAI W F, WEI W H et al. Hydroxylation and sodium intercalation on g-C₃N₄ for photocatalytic removal of gaseous formaldehyde[J]. Carbon, 175, 467(2021).

[22] WANG X L, FANG W Q, WANG H F et al. Surface hydrogen bonding can enhance photocatalytic H₂ evolution efficiency[J]. Journal of Materials Chemistry A, 1(2013).

[23] LI Y X, XU H, OUYANG S et al. In situ surface alkalinized g-C₃N₄ toward enhancement of photocatalytic H₂ evolution under visible- light irradiation[J]. Journal of Materials Chemistry A, 4(2016).

[24] GAO H L, YAN S C, WANG J J et al. Towards efficient solar hydrogen production by intercalated carbon nitride photocatalyst[J]. Physical Chemistry Chemical Physics, 15(2013).

[25] SUN Z X, FISCHER J M T A, LI Q et al. Enhanced CO₂ photocatalytic reduction on alkali-decorated graphitic carbon nitride[J]. Applied Catalysis B: Environmental, 216, 146(2017).

[26] THOMMES M, KANEKO K, NEIMARK AV et al. Physisorption of gases, three-dimensional graphene with special reference to the evaluation of surface area and pore size distribution (IUPAC technical report)[report]. Pure and Applied Chemistry, 87(2015).

[27] ZHANG Y J, MORI T, YE J H et al. Phosphorus-doped carbon nitride solid: enhanced electrical conductivity and photocurrent generation[J]. Journal of the American Chemical Society, 132(2010).

[28] MAIA D L S, PEPE I, DA SILVA A F et al. Visible-light-driven photocatalytic hydrogen production over dye-sensitized β-BiTaO₄[J]. Journal of Photochemistry and Photobiology A: Chemistry, 243, 61(2012).

[29] CHEN C C, MA W H, ZHAO J C. Semiconductor-mediated photodegradation of pollutants under visible-light irradiation[J]. Chemical Society Reviews, 39(2010).