In-situ growth of β-Bi2O3 nanosheets on g-C3N4 to construct direct Z-scheme heterojunction with enhanced photocatalytic activities

Wang, Dongbo; Yu, Xin; Feng, Qingge; Lin, Xianhao; Zhang, Shuai; Huang, Xianqing; Li, Xiang; Chen, Kao; Zhao, Bohan; Zhang, Zhao

doi:10.1016/j.jallcom.2020.157795

Cited by 59 publications

(10 citation statements)

References 51 publications

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“…XRD patterns of CNs catalysts synthesized with different reaction temperature and different ratios show quite similar characteristic peaks and were shown in Figure S1. Two characteristic peaks were observed in the B-CN sample at about 27.4° (the (002) plane of typical g-C 3 N 4 phase, corresponding to the layer stacking of the conjugated aromatic rings, JCPDS 87-1526) and 13.1° (the repeating packing of heptazine units (100)), respectively. , For CN11, a quite different XRD pattern was obtained. The strong peak around 27.4° of B-CN disappeared, reflecting that the structure of g-C 3 N 4 was broken down owing to the doping of metal ions.…”

Section: Resultsmentioning

confidence: 96%

“…Then, the 300 W Xe lamp was turned on after 1-h adsorption, and 20 μL of suspension was taken every 1 h for the 1 002) plane of typical g-C 3 N 4 phase, corresponding to the layer stacking of the conjugated aromatic rings, JCPDS 87-1526) and 13.1°(the repeating packing of heptazine units (100)), respectively. 31,32 For CN11, a quite different XRD pattern was obtained. The strong peak around 27.4°of B-CN disappeared, reflecting that the structure of g-C 3 N 4 was broken down owing to the doping of metal ions.…”

Section: Instrumentation Ft-ir Experimentsmentioning

confidence: 99%

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Molten-Salt Synthesis of Triazine-Based Carbon Nitride and Its Photocatalytic Degradation Mechanism Investigation by In Situ NMR

et al. 2023

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Carbon nitride-based catalysts are nonmetallic materials with efficient photocatalysis for water splitting, degradation of organic dyes, and CO 2 reduction. In this paper, a one-step molten salt method was employed for the synthesis of ionic doped carbon nitride materials named CNs (carbon nitride catalysts), which exhibited excellent adsorption performance and photocatalytic activity. The adulteration of Zn 2+ ions created a unique nanosheet stack morphology, leading to more effective active sites and better electron transfer efficiency. Additionally, the degradation mechanism was investigated by the quasi-in situ NMR method. The reaction products and photocatalytic process were fully discussed, providing a new degradative pathway of methylene blue (MB) by such CN-based catalysts.

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Section: Resultsmentioning

confidence: 96%

Section: Instrumentation Ft-ir Experimentsmentioning

confidence: 99%

Molten-Salt Synthesis of Triazine-Based Carbon Nitride and Its Photocatalytic Degradation Mechanism Investigation by In Situ NMR

et al. 2023

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“…Certainly, the different catalysts used for Rh B degradation are compared in Table S5. − Compared with catalysts such as CTP/TiO 2 , ZnO/CQDs, or 0.010-Ag/Ag 3 PO 4 , the g-C 3 N 4 /NCDs/Ag materials have a more stable performance and a better degradation effect in the degradation of Rh B. This means that g-C3N4/NCDs/Ag materials have more potential for development in the field of photocatalytic organic pollution treatment.…”

Section: Resultsmentioning

confidence: 99%

g-C₃N₄/Nitrogen-Doped Carbon Dot/Silver Nanoparticle-Based Ternary Photocatalyst for Water Pollutant Treatment

Wang

Hao

et al. 2023

ACS Appl. Nano Mater.

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The graphitic carbon nitride (g-C3N4)/nitrogen-doped carbon dots (NCDs)/silver (Ag) ternary composite catalysts for organic pollution degradation in aqueous solution were constructed using an interfacial electronic control mechanism with double doping of NCDs and Ag nanoparticles (NPs). NCDs can act as a bridge for electrons to guide the flow of photogenerated charge carriers. The Ag NPs acts as photosensitizers and electron acceptors, enhancing electron transport in the material. With the synergistic effect of NCDs and Ag NPs, the absorption range of the visible spectrum of the g-C3N4/NCDs/Ag catalyst is broadened, the excitation of electrons is enhanced, and the photogenerated electron–hole binding rate is slowed down. The experimental results showed that the degradation of several contaminants [methyl orange (MO), rhodamine B (Rh B), tetracycline hydrochloride, and chrysin hydrochloride] could be achieved within 100 min using a 300 W xenon lamp as the light source (λ > 400 nm). It is very noteworthy that the reaction rates of g-C3N4/NCDs/Ag catalysts for the degradation of MO and Rh B were 13.5 and 12.9 times higher than those of conventional g-C3N4, respectively. NCDs and Ag NPs are uniformly distributed inside the material by inducing g-C3N4 to undergo self-assembly, and thus the g-C3N4/NCDs/Ag catalysts exhibit a stable recycling performance. In addition, •O2 – was confirmed as the main active substance in the photocatalytic process by radical capture experiments and EPR tests, and •OH was used as a secondary site to assist in the photocatalytic degradation process. This design idea of a double-doped modulated g-C3N4 material is expected to be applied in more fields.

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“…The wide peak at 3000–3600 cm −1 comes from N–H and O–H. 52 With the increase of the Mn content, this peak gradually becomes weaker, because the large radius of Mn makes the bond chains of the polymer structural units in the layer not orderly and reduces the order effect. 40 The FTIR results indicate that co-doping Mn and P does not affect the chemical structure of g-C 3 N 4 .…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Mn/P co-doped hollow tubular carbon nitride by a one-step hydrothermal–calcination method for the photocatalytic degradation of organic pollutants

Wang

Dong

et al. 2022

Catal. Sci. Technol.

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In-situ growth of β-Bi2O3 nanosheets on g-C3N4 to construct direct Z-scheme heterojunction with enhanced photocatalytic activities

Cited by 59 publications

References 51 publications

Molten-Salt Synthesis of Triazine-Based Carbon Nitride and Its Photocatalytic Degradation Mechanism Investigation by In Situ NMR

Molten-Salt Synthesis of Triazine-Based Carbon Nitride and Its Photocatalytic Degradation Mechanism Investigation by In Situ NMR

g-C₃N₄/Nitrogen-Doped Carbon Dot/Silver Nanoparticle-Based Ternary Photocatalyst for Water Pollutant Treatment

Fabrication of Mn/P co-doped hollow tubular carbon nitride by a one-step hydrothermal–calcination method for the photocatalytic degradation of organic pollutants

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In-situ growth of β-Bi2O3 nanosheets on g-C3N4 to construct direct Z-scheme heterojunction with enhanced photocatalytic activities

Cited by 59 publications

References 51 publications

Molten-Salt Synthesis of Triazine-Based Carbon Nitride and Its Photocatalytic Degradation Mechanism Investigation by In Situ NMR

Molten-Salt Synthesis of Triazine-Based Carbon Nitride and Its Photocatalytic Degradation Mechanism Investigation by In Situ NMR

g-C3N4/Nitrogen-Doped Carbon Dot/Silver Nanoparticle-Based Ternary Photocatalyst for Water Pollutant Treatment

Fabrication of Mn/P co-doped hollow tubular carbon nitride by a one-step hydrothermal–calcination method for the photocatalytic degradation of organic pollutants

Contact Info

Product

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g-C₃N₄/Nitrogen-Doped Carbon Dot/Silver Nanoparticle-Based Ternary Photocatalyst for Water Pollutant Treatment