Enhanced charge carrier density of a p-n BiOCl/BiVO4 heterostructure by Ni doping for photoelectrochemical applications

Somdee, Asanee; Wannapop, Surangkana; Pijarn, Nuchanaporn; Bovornratanaraks, Thiti

doi:10.1016/j.jallcom.2022.168434

Cited by 11 publications

(2 citation statements)

References 42 publications

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“…[54] Under UV-vis light, the semiconductor path of charge pair transfer is shown in Figure 11. Compared with CSCG-BOC, when Ni element is added to into CNSCG-BOC-8, there is hybridization between Ni d state and O p state in the band gap forming the doping level, [55] photogenerated electrons (e − ) will easily transfer from VB to Ni defect level, and then easily inject into CB, which means that electrons in the VB of BOC will more easily migrate to its CB, and then they will be extracted under the action of highly graphitized CSCG and react with O 2 in water to become •O 2− free radicals. And the holes (h + ) will stay in the VB of CNSCG-BOC-8.…”

Section: Mechanism Toward High Performancementioning

confidence: 99%

Carbonized Nickel‐Loaded Spent Coffee Grounds Modified BiOCl Photocatalysts for Enhanced Degradation of Ofloxacin

Long

et al. 2023

Cryst. Res. Technol.

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Water pollution has posed a serious threat to the environment and human health. There is an urgent need to develop highly efficient and application-convenient photocatalytic materials. To overcome this critical problem, the carbonized nickel-loaded spent coffee grounds modified BiOCl (CNSCG-BOC-8) photocatalyst is prepared by using facile calcination and hydrolysis method. The optimum substrate carbonization temperature, the amount of substrate, and the loading amount of nickel ion are discussed. Further, the photocatalytic performance of the catalyst is tested using Ofloxacin (OFX) as target pollutant under ultraviolet and visible light (UV-vis light). The as-obtained photocatalysts show the degradation efficiency of OFX in the prepared composite reaches 87% within 40 min under ultraviolet and visible light. Moreover, the results show that CNSCG-BOC-8 has better photoelectricity, excellent cycle stability, and is environment-friendly. Therefore, this paper provides an important reference for the rational development and use of Ni-loaded biomass-derived carbon as the substrate to modify bismuth-based photocatalyst for environmental remediation.

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Section: Mechanism Toward High Performancementioning

confidence: 99%

Carbonized Nickel‐Loaded Spent Coffee Grounds Modified BiOCl Photocatalysts for Enhanced Degradation of Ofloxacin

Long

et al. 2023

Cryst. Res. Technol.

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“…Generally speaking, metal-ion doping is one of the most promising options to improve charge separation, since it can narrow the band gap width and widen light absorption range [21][22][23]. More importantly, metal-ion doped into the semiconductor lattice can form doping level in the energy band of the photocatalyst, which act as a springboard for electrons transition, thus accelerating electron-hole pairs separation [24,25]. For example, when facing the photocatalytic degradation of norfloxacin, Cu-doped BiOBr exhibits superior activity to pure BiOBr owing to the generation of doping levels in energy band, which efficaciously motivate photoexcited electrons and holes separation [26].…”

Section: Introductionmentioning

confidence: 99%

Achieving high carrier separation over Bi₄O₅I₂ through Ni doping for improved photocatalytic CO₂ reduction

Chen¹,

Jin²,

Lan³

et al. 2023

Nanotechnology

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Photocatalytic CO2 reduction is considered to be an appealing way of alleviating environmental pollution and energy shortages simultaneously under mild condition. However, the activity is greatly limited by the poor separation of the photogenerated carriers. Ion doping is a feasible strategy to facilitate the charge transfer. In this work, Ni-doped Bi4O5I2 photocatalyst is successfully fabricated using a one-pot hydrothermal method. A few doping levels appear in the energy band of Bi4O5I2 after Ni doping, which are used as springboards for electrons transition, thus promoting photoexcited electrons and holes separation. As a consequence, a remarkably enhanced yield of CO and CH4 (6.2 and 1.9 μmol g-1 h-1) is obtained over the optimized Bi4O5I2-Ni15, which is approximately 2.1 and 3.8 times superior to pure Bi4O5I2, respectively. This work may serve as a model for the subsequent research of Bi-based photocatalysts to implement high-performance CO2 photoreduction.

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Phase engineering of 1 T-MoS2 on BiVO4 photoanode with p–n Junctions: Establishing high speed charges transport channels for efficient photoelectrochemical water splitting

Xue

Luo

et al. 2023

Chemical Engineering Journal

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Enhanced charge carrier density of a p-n BiOCl/BiVO4 heterostructure by Ni doping for photoelectrochemical applications

Cited by 11 publications

References 42 publications

Carbonized Nickel‐Loaded Spent Coffee Grounds Modified BiOCl Photocatalysts for Enhanced Degradation of Ofloxacin

Carbonized Nickel‐Loaded Spent Coffee Grounds Modified BiOCl Photocatalysts for Enhanced Degradation of Ofloxacin

Achieving high carrier separation over Bi₄O₅I₂ through Ni doping for improved photocatalytic CO₂ reduction

Phase engineering of 1 T-MoS2 on BiVO4 photoanode with p–n Junctions: Establishing high speed charges transport channels for efficient photoelectrochemical water splitting

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Enhanced charge carrier density of a p-n BiOCl/BiVO4 heterostructure by Ni doping for photoelectrochemical applications

Cited by 11 publications

References 42 publications

Carbonized Nickel‐Loaded Spent Coffee Grounds Modified BiOCl Photocatalysts for Enhanced Degradation of Ofloxacin

Carbonized Nickel‐Loaded Spent Coffee Grounds Modified BiOCl Photocatalysts for Enhanced Degradation of Ofloxacin

Achieving high carrier separation over Bi4O5I2 through Ni doping for improved photocatalytic CO2 reduction

Phase engineering of 1 T-MoS2 on BiVO4 photoanode with p–n Junctions: Establishing high speed charges transport channels for efficient photoelectrochemical water splitting

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Achieving high carrier separation over Bi₄O₅I₂ through Ni doping for improved photocatalytic CO₂ reduction