Facile preparation of graphitic carbon nitride nanosheet/agar composite hydrogels for removal of tetracycline via the synergy of adsorption and photocatalysis

Abstract

Graphitic carbon nitride (g-C3N4) nanosheet/agar composite hydrogels were prepared by sol–gel phase transition of agar. In the composite hydrogels, agar was advantageous for promoting adsorption capacity, while g-C3N4 nanosheet was...

Tailored Citric Acid-Functionalized Carbon Nitride Homojunction-Immobilized Carboxymethyl Cellulose 3D Photocatalytic Hydrogels: A Multifaceted Approach toward Environmental Remediation

“…The reduction in the charge transfer resistance boosts the transfer of charge carriers and reduces the recombination of electron−hole pairs. 45 Further, the Bode phase plot is used to obtain vital information about the resistance to recombination of the electron−hole pair as shown in Figure 5e. The ICN hydrogels exhibited a significant shift in the frequency maxima and ensured the quick channelization of the ICN/CMC beads due to the formation of an effective homojunction of GCN.…”

“…It is also speculated that the transfer of electrons through hydrogen bonds played a key role in suppression of the recombination ratio. The reduction in the charge transfer resistance boosts the transfer of charge carriers and reduces the recombination of electron–hole pairs . Further, the Bode phase plot is used to obtain vital information about the resistance to recombination of the electron–hole pair as shown in Figure e.…”

Fabrication of Efficient Na, B, and O Codoped g-C3N4/Polypyrrole-Carbon Black 3D Beads for Expeditious Degradation of Tetracycline via Percarbonate Activation

“…The construction of hydrogel is a promising strategy for environmental remediation through the effective interaction between the photocatalysts and pollutants. 37,38 In this study, the Na, B, and O codoped g-C 3 N 4 polypyrrole carbon black (CCNP) alginate hydrogels were prepared using sono-assisted wet impregnation and in situ cross-linking methods. Tetracycline, a broad-spectrum antibiotic mainly used for treating bacterial infections commonly detected in groundwater and surface water, is chosen as a model pollutant.…”

“…The uniform distribution of CN onto the 3D hydrogel structure enhances hydrogels’ uniformity and minimizes the problems associated with the aggregation of photocatalysts. The construction of hydrogel is a promising strategy for environmental remediation through the effective interaction between the photocatalysts and pollutants. , …”

Photochemical synthesis of bimetallic CuNiSxquantum dots onto g-C3N4as a cocatalyst for high hydrogen evolution

“…Consequently, numerous efforts have been explored to enhance the photocatalytic activity of g-C 3 N 4 , including element doping, exfoliation engineering, nanostructure construction, and heterojunction coupling. [14][15][16][17][18][19][20][21][22][23][24][25] Among them, loading cocatalysts onto host g-C 3 N 4 is a simple and effective method to enhance the photocatalytic performance. 26 The cocatalyst not only can work as an electron trapper to capture the photogenerated electrons but can also provide effective active sites for the reduction reaction.…”