A New Graphitic Carbon Nitride/Horseradish Peroxidase Hybrid Nano–Bio Artificial Catalytic System for Unselective Degradation of Persistent Phenolic Pollutants

Abstract

It has always been a challenge to fabricate artificial catalytic system as one promising strategy of using solar energy for chemical synthesis, fuel production, electrochemical detection, pollutant degradation, etc. Here a new g‐C3N4/horseradish peroxidase hybrid nano–bio artificial catalytic system is exploited. The coupling effect between photocatalysis and biocatalysis cycles not only forcefully improves the separation efficiency of charge carriers but also continuously produces more OH active species, finally realizing high‐efficiency and unselective degradation of various persistent phenolic pollutants, such as bisphenol A, phenol, p‐nitrophenol, and 2‐naphthol. This work provides an innovative design idea to fabricate general artificial catalytic system that may be widely used in treatment of organic pollutants.

Ultrathin Mesoporous Carbon Nitride Nanosheets Prepared Through a One‐Pot Approach towards Enhanced Photocatalytic Activity

“…Recently, graphitic carbon nitride (g-C 3 N 4 ) have been stimulated keen research interest in the photocatalytic degradation of pollutants, photocatalytic hydrogen production, carbon dioxide reduction, and disinfection because of its unique 2D layered structure, excellent chemical stability, and tunable electronic structure. [24][25][26][27] Nevertheless, the photocatalytic activity of pure g-C 3 N 4 is far from satisfaction, which is mainly due to the low-specific surface area and the rapid recombination of photogenerated electron-hole pairs. [28][29][30][31] In the context, various methods are proposed to enhance the photocatalytic performance of g-C 3 N 4 containing increasing specific surface area, morphology control, element doping, heterostructure construction, etc.…”

In situ one-pot fabrication of MoO3−x clusters modified polymer carbon nitride for enhanced photocatalytic hydrogen evolution

“…cence lifetime of MoO 3−x -PCN-2 (5.917 ns) was much longer than that of the bulk PCN sample (5.017 ns). This result suggested that the efficient electron/hole pairs separation had been realized after the suitable amount of MoO 3−x species loading [38]. Longer fluorescence lifetime than bulk PCN could also be observed for other MoO 3−x -PCN-X samples (FIG.…”

Mesoporous 3D/2D NiCoP/g-C3N4 Heterostructure with Dual Co–N and Ni–N Bonding States for Boosting Photocatalytic H2 Production Activity and Stability

“…XRD is first carried out to identify the phases and structures of the samples. As shown in Figure , the XRD patterns of the original g-C 3 N 4 sample shows two characteristic diffraction peaks at 13.1° and 27.6° that belong to (100) lattice planes of triazine units and (002) lattice planes of interlayer stacking of aromatic segments, respectively, which implies that the pure g-C 3 N 4 sample was obtained . By comparison, a weak diffraction peak also appears at 40.9° in the XRD pattern of the NiCoP/g-C 3 N 4 -3 sample beside the strongest diffraction peak of g-C 3 N 4 , which corresponds exactly to the (111) lattice planes of NiCoP (PDF# 71-2336), indicating the successful modification of NiCoP nanoclusters on 2D g-C 3 N 4 nanosheets.…”

“…As shown in Figure 1, the XRD patterns of the original g-C 3 N 4 sample shows two characteristic diffraction peaks at 13.1°and 27.6°that belong to (100) lattice planes of triazine units and (002) lattice planes of interlayer stacking of aromatic segments, respectively, which implies that the pure g-C 3 N 4 sample was obtained. 28 3d), the weak peak at 129.3 eV is ascribed to Ni δ+ −P δ− and Co δ+ −P δ− bonding states in NiCoP, while the peak at 133.4 eV stems from the surficial oxidized P species. 33,34 Furthermore, the Co 2p XPS spectrum shown in Figure 3e illustrates that one peak at 778.1 eV originates from the 2p 3/2 state of Co δ+ (0 < δ < 2) atoms in NiCoP, whereas the three peaks at 781.4, 783.0, and 784.4 eV are assigned to surficial oxidized Co species, respectively.…”