Construction of Z-scheme Ag–AgBr/Bi2O2CO3/CNT heterojunctions with remarkable photocatalytic performance using carbon nanotubes as efficient electronic mediators

Zuo, Huiru; Wu, Chenyu; Du, Haoyu; Shi, Hao; Fu, Yiwen; Zhang, Tongtong; Yan, Qishe

doi:10.1016/j.chemosphere.2022.134927

Cited by 29 publications

(11 citation statements)

References 67 publications

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“…Zuo et al constructed an Ag−AgBr/Bi 2 O 2 CO 3 /CNT catalyst with a Zscheme heterostructure, which broadened the scope of visible light absorption and prolonged the lifetime of charge carriers, thereby exhibiting good photoactivity in tetracycline degradation under visible light illumination. 20 Moreover, Bi 2 O 2 CO 3 has been applied in the PNF field. Feng et al achieved enhanced nitrogen adsorption and activation by introducing abundant oxygen vacancies on the Bi 2 O 2 CO 3 surface.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The photocatalytic hydrogen production activity of this catalyst reached 965 μmol L –1 g –1 h –1 . Zuo et al constructed an Ag–AgBr/Bi 2 O 2 CO 3 /CNT catalyst with a Z-scheme heterostructure, which broadened the scope of visible light absorption and prolonged the lifetime of charge carriers, thereby exhibiting good photoactivity in tetracycline degradation under visible light illumination . Moreover, Bi 2 O 2 CO 3 has been applied in the PNF field.…”

Section: Introductionmentioning

confidence: 99%

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In Situ Fabrication of an S-Scheme NaNbO₃/Bi₂O₂CO₃ Heterojunction for Enhanced Performance in Photocatalytic Nitrogen Fixation

Yue,

Zhang,

Zeng

et al. 2023

Langmuir

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In this study, NaNbO 3 microcubes were introduced during the preparation of Bi 2 O 2 CO 3 nanosheets to construct a series of NaNbO 3 /Bi 2 O 2 CO 3 heterojunctions with varying NaNbO 3 content. Their photoactivities for N 2 fixation were examined and compared. Results demonstrated that 7.5% NaNbO 3 /Bi 2 O 2 CO 3 had the highest photoactivity. The NH 3 production rate under simulated solar light is 453.1 μmol L −1 g −1 h −1 , representing 2.0 and 3.8-fold increases compared to those of Bi 2 O 2 CO 3 and NaNbO 3 , respectively. A comprehensive investigation encompassing the physical and chemical properties of the NaNbO 3 /Bi 2 O 2 CO 3 photocatalyst was conducted. Bi 2 O 2 CO 3 nanosheets were discovered to be distributed on the NaNbO 3 microcubes surface. The addition of NaNbO 3 exhibited nearly no effect on the photoabsorption performance and specific surface area of the Bi 2 O 2 CO 3 . However, the tight contact between NaNbO 3 and Bi 2 O 2 CO 3 and their appropriate band positions led to the formation of a heterojunction structure between them. The electron drift occurring in the interface region induces the creation of an internal electric field and energy band bending. This facilitates the transfer of photogenerated electrons and holes through an S-scheme mechanism, achieving efficient separation without compromising the redox performance. As a result, the NaNbO 3 /Bi 2 O 2 CO 3 composite exhibits exceptional performance in the photocatalytic nitrogen fixation reaction. This study expands the application of S-scheme photocatalysts in the field of N 2 reduction and provides insights into the preparation of efficient S-scheme photocatalysts.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In Situ Fabrication of an S-Scheme NaNbO₃/Bi₂O₂CO₃ Heterojunction for Enhanced Performance in Photocatalytic Nitrogen Fixation

Yue,

Zhang,

Zeng

et al. 2023

Langmuir

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“…Very recently, Bi-based photocatalysts (e.g., Bi 2 WO 6 , Bi 2 CrO 6 , Bi 2 MoO 6 , BiOBr, BiOCl, BiOI, Bi 2 O 2 CO 3 , and BiVO 4 ), as a kind of visible-light-driven catalyst, have exhibited considerable potential in photocatalysis on account of their special characteristics and unique band structures. − Among these photocatalysts, bismuth molybdate (Bi 2 MoO 6 ) is considered to be a promising visible-light-driven catalyst because of its wide light-harvesting ranges ( E g = 2.49 eV), high photo-oxidation potential, environmental friendliness, low cost, and excellent chemical stability. , Moreover, Bi 2 MoO 6 is one of the simple Aurivillius phase compounds, which consists of (Bi 2 O 2 ) 2+ layers and MoO 4 2– layers . More significantly, Bi 2 MoO 6 possesses band positions with TS-1 to construct a Z-scheme heterojunction for upgrading the photodegradation property by accelerating photogenerated carrier separation and increasing light absorption.…”

Section: Introductionmentioning

confidence: 99%

Constructing a Titanium Silicon Molecular Sieve-Based Z-Scheme Heterojunction with Enhanced Photocatalytic Activity

Ma,

Yan,

Mao

et al. 2024

Langmuir

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Titanium silicon molecular sieve (TS-1) is an oxidation catalyst that possesses a long lifetime of charge transfer excited state, high Ti utilization efficiency, large specific surface area, and good adsorption property; therefore, TS-1 acts as a Tibased photocatalyst candidate. In this work, TS-1 coupled Bi 2 MoO 6 (TS-1/BMO) photocatalysts were fabricated via a facile hydrothermal route. Interestingly, the optimized TS-1/BMO-1.0 catalyst exhibited a decent photodegradation property toward tetracycline hydrochloride (85.49% in 120 min) under the irradiation of full spectrum light, which were 4.38 and 1.76 times compared to TS-1 and BMO, respectively. The enhanced photodegradation property of the TS-1/BMO-1.0 catalyst could be attributed to the reinforced light-harvesting capacity of the photocatalyst, high charge mobility, and suitable band structure for tetracycline hydrochloride degradation. In addition, the mechanism of photocatalytic degradation of tetracycline hydrochloride by the TS-1/BMO-1.0 catalyst was reasonably proposed based on the band structure, trapping, and ESR tests. This research provided feasible ideas for the design and construction of highefficiency photocatalysts for contaminant degradation.

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“…27,28 In addition, semiconductor carbon nanotubes exhibit promising catalytic activity in photocatalysis, where they efficiently decompose organic pollutants under light irradiation. 29,30 They also hold potential as catalyst carriers and contributors to redox reactions in gas catalysis and fuel cells. 31,32 In summary, ongoing research into the application of semiconductor carbon nanotubes in catalysis has achieved notable advancements, and continued developments in this field are anticipated to unlock their full potential.…”

Section: Introductionmentioning

confidence: 99%

Efficient charge separation and transfer in a one-dimensional carbon nanotube/tungsten oxide p–n heterojunction composite for solar energy conversion

Ma,

Lang

2023

Phys. Chem. Chem. Phys.

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Construction of Z-scheme Ag–AgBr/Bi2O2CO3/CNT heterojunctions with remarkable photocatalytic performance using carbon nanotubes as efficient electronic mediators

Cited by 29 publications

References 67 publications

In Situ Fabrication of an S-Scheme NaNbO₃/Bi₂O₂CO₃ Heterojunction for Enhanced Performance in Photocatalytic Nitrogen Fixation

In Situ Fabrication of an S-Scheme NaNbO₃/Bi₂O₂CO₃ Heterojunction for Enhanced Performance in Photocatalytic Nitrogen Fixation

Constructing a Titanium Silicon Molecular Sieve-Based Z-Scheme Heterojunction with Enhanced Photocatalytic Activity

Efficient charge separation and transfer in a one-dimensional carbon nanotube/tungsten oxide p–n heterojunction composite for solar energy conversion

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Construction of Z-scheme Ag–AgBr/Bi2O2CO3/CNT heterojunctions with remarkable photocatalytic performance using carbon nanotubes as efficient electronic mediators

Cited by 29 publications

References 67 publications

In Situ Fabrication of an S-Scheme NaNbO3/Bi2O2CO3 Heterojunction for Enhanced Performance in Photocatalytic Nitrogen Fixation

In Situ Fabrication of an S-Scheme NaNbO3/Bi2O2CO3 Heterojunction for Enhanced Performance in Photocatalytic Nitrogen Fixation

Constructing a Titanium Silicon Molecular Sieve-Based Z-Scheme Heterojunction with Enhanced Photocatalytic Activity

Efficient charge separation and transfer in a one-dimensional carbon nanotube/tungsten oxide p–n heterojunction composite for solar energy conversion

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In Situ Fabrication of an S-Scheme NaNbO₃/Bi₂O₂CO₃ Heterojunction for Enhanced Performance in Photocatalytic Nitrogen Fixation

In Situ Fabrication of an S-Scheme NaNbO₃/Bi₂O₂CO₃ Heterojunction for Enhanced Performance in Photocatalytic Nitrogen Fixation