Synthesis of ultrathin g-C₃N₄/graphene nanocomposites with excellent visible-light photocatalytic performances

Abstract

Graphitic carbon nitride (g-C3N[Formula: see text] has drawn increasing interest as an efficient photocatalyst. To further improve its photocatalytic activity, herein we coupled g-C3N4 with graphene to construct ultrathin g-C3N4/graphene (g-C3N4/G) nanocomposites by a pyrolysis-sonication-hydrothermal method. Under the illumination of visible-light, g-C3N4/G nanocomposites with 10[Formula: see text]wt.%G can degrade 92% Rhodamine B (RhB) in 120[Formula: see text]min, which is higher than that (57%) from pure g-C3N4. Moreover, the recycling experiment indicates that the nanocomposite still remains excellent photocatalytic stability. Therefore, g-C3N4/G nanocomposites exhibit excellent photocatalytic activity and stability, resulting in a promising application in water purification.

Sonocatalytic Fe3O4 cluster microspheres/g-C3N4 composite for efficient removal of organic dyes

“…Melamine was used as a precursor for synthesis of pure g-C3N4. Typically, melamine was put in a muffle furnace powder at 550 0 C for 4h [12,15]. Then, obtained products were collected and washed with deionized water several times for further use.…”

“…Graphic carbon (g-C3N4) has attracted great attention for many applications because of their unique physicochemical property and stable allotrope. With the structure of a two-dimensional framework, g-C3N4 exhibits basic surface sites, electron-rich sites and highly stable hidrothermal and chemical stability [12]. The properties play an important role in catalytic application.…”

Preparation, Characterization of Graphitic Carbon Nitride Photo-Catalytic Nanocomposites and Their Application in Wastewater Remediation: A Review

“…Figure 3 is a diagram of the methods currently used to prepare g-C3N4. The most commonly used methods are thermal polymerization, vapor deposition, high temperature, and high-pressure synthesis and solvothermal synthesis [56][57][58]. Thermal polymerization is the preparation of g-C3N4 by pyrolysis of nitrogen-rich organic matter and polycondensation of precursor itself.…”

“…Figure 3 is a diagram of the methods currently used to prepare g-C 3 N 4 . The most commonly used methods are thermal polymerization, vapor deposition, high temperature, and high-pressure synthesis and solvothermal synthesis [56][57][58].…”

Polydopamine coating on additive manufacturing‐based poly lactic acid structures with controllable parameters for enhanced mechanical properties: An experimental investigation

“…The authors reported a 14.9% improvement in tensile strength of PLA pellets on coating pellets with polydopamine. Wang et al [ 47 ] reported a 71.1% increase in compressive strength of calcium silicate structures on coating them with polydopamine. This significant increase in compressive strength was attributed to the absorption ability of polydopamine that hindered propagation of cracks.…”