Oxygen doped graphitic carbon nitride with regulatable local electron density and band structure for improved photocatalytic degradation of bisphenol A

Inside-and-out modification of graphitic carbon nitride (g-C3N4) photocatalysts via defect engineering for energy and environmental science

Rapid removal of methylene blue and nickel ions and adsorption/desorption mechanism based on geopolymer adsorbent

Novel MoSSe/Bi2WO6 S-scheme heterojunction photocatalysts for significantly improved photoelectrochemical and photocatalytic performance

Construction of a n-p type Bi12O15Cl6@BiOI-CQDs junction with core-shell structure for boosting photocatalytic degradation and antibacterial performance

Preparation of double-vacancy modified carbon nitride to greatly improve the activity of photocatalytic hydrogen generation

Z-scheme Cu2(OH)3F nanosheets-decorated 3D Bi2WO6 heterojunction with an intimate hetero-surface contact through a hydrogen bond for enhanced photoinduced charge separation and transfer

One-step synthesis of novel Ni-doped Cu2(OH)3F Fenton-like catalyst driven by visible light: Single activity and synergistic effect enhanced by bimetallic cooperation

Inhibiting the competitive effect of O2 in copper-based Fenton reagents and improving the photogenerated electron–hole pair separation of g-C3N4 are the focus of current research. In this article, Cu2(OH)3F was successfully synthesized by the hydrothermal method and combined with g-C3N4via a simple mix-load method. The composite catalyst (CFO/CN) exhibits an excellent catalytic effect for degradation of dyes in wastewater in a photo-assisted Fenton-like system. Among the samples, CFO-40 shows the best catalytic effect, and the reaction rate is 4.67 times and 17.5 times as high as that of pure g-C3N4 and Cu2(OH)3F under the same conditions, respectively. The enhancement of the photocatalytic activity is mainly due to the formation of a photo-assisted Fenton-like effect between Cu2(OH)3F and g-C3N4, which not only accelerates the separation and transfer of photogenerated carriers, but also promotes the conversion and circulation of Cu(II) and Cu(I). In addition, it has been proved that the material has a wide pH range. The continuous degradation experiment shows that the material has superior stability and recyclability. Additionally, it is confirmed that ˙OH, O2˙−, and h+ all contribute to the reaction, among which ˙OH plays a major role. This research introduces a new member to the family of photo-assisted Fenton-like technologies.

Construction of a novel Cu2(OH)3F/g-C3N4 heterojunction as a high-activity Fenton-like catalyst driven by visible light

The structural modulation of graphitic carbon nitride (g-C3N4) is regarded as an effective strategy to boost its photocatalytic behavior. Herein, we have synthesized 4,6-dimethyl-2-hydroxypyrimidine-doped and cyano defects co-modified graphitic carbon nitride (HDMP–CD-g-C3N4) using a facile in situ co-condensation method. HDMP–CD-g-C3N4 was employed for the degradation of tetracycline hydrochloride, exhibiting enhanced photocatalytic activity and catalyst stability. The characterization results demonstrate that the doping of HDMP decreases the band gap, thus promoting the light absorption of g-C3N4. Meanwhile, as an electron acceptor, HDMP broadens the π-conjugated off-domain system and accelerates the transfer of photogenerated electrons. In addition, the introduction of cyano defects further improves the separation efficiency of photogenerated electrons and holes. Analysis of time-resolved fluorescence spectra solidly supports these conclusions. Therefore, the photocatalytic degradation rate of HDMP–CD-g-C3N4 was 3.8 times that of the original g-C3N4, 2 times that of HDMP-doped g-C3N4 (HDMP-g-C3N4) and 2.5 times that of cyano defects-modified g-C3N4 (CD-g-C3N4). This work provides a way for collaboratively modulating the structure of g-C3N4 with molecular doping and defects, which is expected to bring novel prospects for the application of g-C3N4 in the treatment of waste water.

Construction of molecularly doped and cyano defects co-modified graphitic carbon nitride for the efficient photocatalytic degradation of tetracycline hydrochloride

Lifen Wang

Papers

Preparation of double-vacancy modified carbon nitride to greatly improve the activity of photocatalytic hydrogen generation

Z-scheme Cu2(OH)3F nanosheets-decorated 3D Bi2WO6 heterojunction with an intimate hetero-surface contact through a hydrogen bond for enhanced photoinduced charge separation and transfer

One-step synthesis of novel Ni-doped Cu2(OH)3F Fenton-like catalyst driven by visible light: Single activity and synergistic effect enhanced by bimetallic cooperation

Construction of a novel Cu2(OH)3F/g-C3N4 heterojunction as a high-activity Fenton-like catalyst driven by visible light

Construction of molecularly doped and cyano defects co-modified graphitic carbon nitride for the efficient photocatalytic degradation of tetracycline hydrochloride