An alkali treating strategy for the colloidization of graphitic carbon nitride and its excellent photocatalytic performance

ZIF‐67‐Derived 3D Hollow Mesoporous Crystalline Co3O4 Wrapped by 2D g‐C3N4 Nanosheets for Photocatalytic Removal of Nitric Oxide

“…The peak at 284.8 eV is derived from graphitic carbon (C–C and CC), while the peak at 288.2 eV is assigned to N‐sp 3 C (N–CN) in the s‐triazine ring units. The N 1s spectrum can be deconvoluted into three peaks at 398.3, 399.2, and 400.7 eV, which are assigned to sp 2 ‐hybridized N(C–NC) species, tertiary N(N–(C) 3 ) groups, and N–H bonds, respectively . The O 1s peak centered at 531.9 eV arises from lattice oxygen in CO species .…”

Photo‐Induced Hydrogel Formation Based on g‐C3N4 Nanosheets with Self‐Cross‐Linked 3D Framework for UV Protection Application

“…We herein employed graphitic CNNS that were alkali‐exfoliated and stable in aqueous suspension to substitute the pristine g‐C 3 N 4 (Scheme c). In comparison to the pristine g‐C 3 N 4 , CNNS has more amino and hydroxyl groups that were formed from the hydrolysis of bridge‐linked N in tri‐s‐triazine units . Besides, to generate radicals to initiate the AM polymerization, CNNS also acted as cross‐linker to connect PAM chains to form 3D hydrogel skeleton by H bonding action between amido groups on PAM and amino or hydroxyl groups on CNNS.…”

“…The g‐C 3 N 4 was prepared by directly heating melamine at 520 °C for 4 h in a muffle furnace. The CNNS was obtained by exfoliation of the pristine g‐C 3 N 4 in an alkaline solution, as described in our previous report . In detail, 1.0 g g‐C 3 N 4 powders were dispersed in a 150 mL NaOH solution (0.2 mol L −1 ), which was further heated to 100 °C and continuously stirred for 12 h. Then, the sediments were collected and re‐dispersed into 50 mL deionized water.…”

Triamterene‐Grafted Graphitic Carbon Nitride with Electronic Potential Redistribution for Efficient Photocatalytic Hydrogen Evolution

“…The O1s peak can be attributed to adsorbed oxygen species, such as water and oxygen. [31,32] The high-resolution C1ss pectra (Figure 2b)can be divided into two main peaks with binding energies of 284.8 and 288.3 eV,c orresponding to the sp 2 carbon atoms in the C=Ca nd NÀC=Nm oieties, respectively.A ne xtra, low-intensity peak in the C1ss pectrum of UTP-2 at ab inding energy of 286.2 eV comes from the CÀNH x (x = 1, 2) speciesa t the edges of the heptazine unites, [33] which suggestst hat copolymerization leads to an increase in the content of terminal C=NÀH. In addition, the microstructure of UTP-2 comprises smaller nanosheets and ad istorted framework ( Figure 4), which indicates that copolymerization leads to more terminal ÀNH 2 groups.…”