biostudies-literatureMedina-Llamas MMinistero dell'Istruzione, dell'Università e della RicercaMinistero dell’Istruzione, dell’Università e della Ricercae202400918https://www.ebi.ac.uk/biostudies/studies/S-EPMC11789996biostudies-literatureUnknown18(3)Carbon nitride compounds (CNCs) in the form of graphitic carbon nitride (g-C₃N₄) and poly(heptazine imide) were synthesized using different metal chloride salts (MCl_x), i. e., NaCl, KCl and CaCl₂, as sacrificial templates and by varying the MCl_x to melamine molar ratios. A systematic study of their photocatalytic activity for H₂ production in relation to the physicochemical, morphological, and optical properties was carried out. Each sample was tested achieving the highest hydrogen evolution rates of about 7660 μmol g^-1 h^-1, 5380 μmol g^-1 h^-1 and 3140 μmol g^-1 h^-1 using CaCl₂, KCl, and NaCl, respectively. This work demonstrates how the synthesis of ChemSusChemSynthesis of Carbon Nitride Polymorphs by Sacrificial Template Method: Correlation between Physicochemical Properties and Photocatalytic Performance.PMC11789996P20223HSWXBianchi ESpeltini AMedina-Llamas MMozzati MCProfumo AMilella AMilanese CTedesco CListorti AArmenise VMalavasi LfalseSynthesis of Carbon Nitride Polymorphs by Sacrificial Template Method: Correlation between Physicochemical Properties and Photocatalytic Performance.Carbon nitride compounds (CNCs) in the form of graphitic carbon nitride (g-C₃N₄) and poly(heptazine imide) were synthesized using different metal chloride salts (MCl_x), i. e., NaCl, KCl and CaCl₂, as sacrificial templates and by varying the MCl_x to melamine molar ratios. A systematic study of their photocatalytic activity for H₂ production in relation to the physicochemical, morphological, and optical properties was carried out. Each sample was tested achieving the highest hydrogen evolution rates of about 7660 μmol g^-1 h^-1, 5380 μmol g^-1 h^-1 and 3140 μmol g^-1 h^-1 using CaCl₂, KCl, and NaCl, respectively. This work demonstrates how the synthesis of 2025-01-01T00:00:00Z2025 Feb2025-04-04T00:52:25.154Z2025-04-04T00:52:25.154ZS-EPMC117899963920657110.1002/cssc.202400918