The mechanism insight for improved photocatalysis and interfacial charges transfer of surface-dispersed Ag0 modified layered graphite-phase carbon nitride nanosheets

Xie, Lihao; Lu, Dingze; Zeng, Yimei; Kondamareddy, Kiran Kumar; Wu, Qiong; Li, Lianbi; Fan, Huiqing; Ho, Wingkei

doi:10.1016/j.apt.2022.103936

Cited by 10 publications

(1 citation statement)

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“…Graphitic phase carbon nitride (g-C 3 N 4 ) is a typical nonmetallic polymer semiconductor. Because of its excellent oxidation ability, suitable photoelectrochemical properties, good thermal stability, low cost and easy availability of raw materials, and simple preparation process, it has become one of the current hot research materials. − However, g-C 3 N 4 has limitations such as a high recombination rate of photogenerated carriers and large bandgap width, which limit its practical application in the field of photocatalysis. , …”

Section: Introductionmentioning

confidence: 99%

Preparation and Photocatalytic Degradation Performance of Amine-Rich Carbon Nitride with Structural Modulation of the Precursor

Shi,

Yu,

et al. 2023

Langmuir

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The photocatalytic performance of graphitic phase carbon nitride (g-C3N4) is strongly influenced by its own microstructure as well as the precursor structure that causes the microstructure changes. In this paper, a composite precursor of sodium chloride and cyanamide (NaCl/CA-2) was obtained by freeze-drying, which possess an aggregated state different from that of the non-freeze-drying method. This new aggregation state with the introduction of sodium ions into the cyanamide lattice results in a higher activation energy of NaCl/CA-2 in the thermal polycondensation process of the molten salt-assisted preparation of g-C3N4, which prevented the condensation of two cyanamides to one dicyandiamide, ultimately obtaining FD-CN with an amino-rich structure. The nitrogen atoms on the amino group can provide the photocatalyst with more unpaired electrons that can participate in the photoexcitation process, further improving its electron–hole separation ability and charge transfer efficiency, thus effectively enhancing its photocatalytic activity. Compared to the original g-C3N4, the photocatalytic activity of FD-CN for the degradation of methylene blue increased 2.19 times.

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