Degradation of nitrobenzene in 3D stack Z-scheme photoelectrocatalytic system: Degradation condition, pathway analysis and synergistic mechanism

Leng, Haoran; Lv, Zhiying; Tan, Hongmei; Jia, Yuhong; You, Hong

doi:10.1016/j.psep.2022.10.075

Process Safety and Environmental Protection

2023

DOI: 10.1016/j.psep.2022.10.075

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Degradation of nitrobenzene in 3D stack Z-scheme photoelectrocatalytic system: Degradation condition, pathway analysis and synergistic mechanism

Haoran Leng

Zhiying Lv

Hongmei Tan

et al.

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Cited by 13 publications

References 47 publications

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Photoelectrocatalytic CO₂ Reduction to Formate Using a BiVO₄/ZIF‐8 Heterojunction

Yang,

Yang

et al. 2024

ChemPlusChem

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Converting CO2 into high‐value chemical fuels through green photoelectrocatalytic reaction path is considered as a potential strategy to solve energy and environmental problems. In this work, BiVO4/ZIF‐8 heterojunctions are prepared by in‐situ synthesis of ZIF‐8 nanocrystals with unique pore structure on the surface of BiVO4. The experimental results show that the silkworm pupa‐like BiVO4 is successfully combined with porous ZIF‐8, and the introduction of ZIF‐8 can provide more sites for CO2 capture. The optimal composite ratio of 4:1‐BiVO4/ZIF‐8 showed excellent CO2 reduction activity and the lowest electrochemical transport resistance. In the electrocatalytic system, 4:1‐BiVO4/ZIF‐8 exhibits formate Faraday efficiency of 82.60% at −1.0 V vs. RHE. Furthermore, the Faraday efficiency increases to 91.24% at − 0.9 V vs. RHE in the photoelectrocatalytic system, which is 10.8 times that of pristine BiVO4. The results show that photoelectric synergism can not only reduce energy consumption, but also improve the Faraday efficiency of formate. In addition, the current density did not decrease during 34 h electrolysis, showing long‐term stability. This work highlights the importance of the construction of heterojunction to improve the performance of photoelectrocatalytic CO2 reduction.

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Photoelectrocatalytic CO₂ Reduction to Formate Using a BiVO₄/ZIF‐8 Heterojunction

Yang,

Yang

et al. 2024

ChemPlusChem

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Photoelectrocatalytic Reduction of Nitrobenzene to Azobenzene by Using Ag Nanoparticles‐Decorated Si Nanocone Arrays Photocathodes

Zhang,

Yu,

et al. 2024

ChemPhotoChem

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Photoelectrocatalytic (PEC) reduction of nitrobenzene (NB) is an extremely promising technology for renewable energy utilization and conversion. PEC reduction of NB to produce higher‐value azobenzene (AZB) instead of aniline (AN), which is now commonly reported, is not currently achievable. In this work, we fabricated Ag nanoparticles (AgNPs)‐decorated silicon nanocone (SiNC) array photocathodes with which the PEC reduction of NB to azobenzene (AZB) was realized for the first time. The SiNC array structure constructed by cryogenic dry etching greatly improved the light absorption ability of the photoelectrode. Ag was chosen as the cocatalyst because of its larger potential difference for the NB reduction reaction and the competing side reaction hydrogen evolution reaction. The Schottky junction formed by AgNPs with Si facilitates the rapid extraction of photogenerated electrons to participate in the PEC reaction. Under the optimized conditions, the PEC reduction of NB was achieved with a conversion of more than 90%, with the reduction products being mainly AZB (9:1 ratio of AZB to AN) as well as excellent stability. The present work provides a photoelectrode that highly selectively PEC reduction of NB to AZB, and also provides insights into the design and preparation of high‐performance silicon‐based photoelectrodes.

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Preparation and Characterization of ZnFe2O4/Mn2O3 Nanocatalysts for the Degradation of Nitrobenzene

et al. 2023

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Degradation of nitrobenzene in 3D stack Z-scheme photoelectrocatalytic system: Degradation condition, pathway analysis and synergistic mechanism

Cited by 13 publications

References 47 publications

Photoelectrocatalytic CO₂ Reduction to Formate Using a BiVO₄/ZIF‐8 Heterojunction

Photoelectrocatalytic CO₂ Reduction to Formate Using a BiVO₄/ZIF‐8 Heterojunction

Photoelectrocatalytic Reduction of Nitrobenzene to Azobenzene by Using Ag Nanoparticles‐Decorated Si Nanocone Arrays Photocathodes

Preparation and Characterization of ZnFe2O4/Mn2O3 Nanocatalysts for the Degradation of Nitrobenzene

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Degradation of nitrobenzene in 3D stack Z-scheme photoelectrocatalytic system: Degradation condition, pathway analysis and synergistic mechanism

Cited by 13 publications

References 47 publications

Photoelectrocatalytic CO2 Reduction to Formate Using a BiVO4/ZIF‐8 Heterojunction

Photoelectrocatalytic CO2 Reduction to Formate Using a BiVO4/ZIF‐8 Heterojunction

Photoelectrocatalytic Reduction of Nitrobenzene to Azobenzene by Using Ag Nanoparticles‐Decorated Si Nanocone Arrays Photocathodes

Preparation and Characterization of ZnFe2O4/Mn2O3 Nanocatalysts for the Degradation of Nitrobenzene

Contact Info

Product

Resources

About

Photoelectrocatalytic CO₂ Reduction to Formate Using a BiVO₄/ZIF‐8 Heterojunction

Photoelectrocatalytic CO₂ Reduction to Formate Using a BiVO₄/ZIF‐8 Heterojunction