One-step in situ synthesis of BiOCl/(BiO)2CO3 composite photocatalysts with exposed high-energy {001} facets

Chen, Yingying; Zhou, Yan; Dong, Qimei; Ding, Hanming

doi:10.1039/c8ce01608a

Cited by 18 publications

(7 citation statements)

References 52 publications

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“…Unfortunately, pristine TiO 2 NFs are frequently limited in further application due to several weak points of TiO 2 itself . Our previous work demonstrated several methods for in situ synthesis of TiO 2 ‐based NFs . Accordingly, a new template‐free and low‐temperature solid‐phase synthesis was employed to prepare TiO 2 /CdS hybrid NFs, which exhibited high photocatalytic H 2 generation activity …”

Section: Introductionmentioning

confidence: 99%

S‐Scheme Heterojunction TiO₂/CdS Nanocomposite Nanofiber as H₂‐Production Photocatalyst

et al. 2019

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One-dimensional (1D) nanostructured photocatalyst is a promising candidate for hydrogen (H 2 ) generation, which can be used to deal with the energy crisis. Herein, novel 1D TiO 2 /CdS wellhybridized nanofibers (NFs) were synthesized via in situ electrospinning method. These 1D hybrid NFs showed a high H 2production rate of 2.32 mmol h À 1 g À 1 with an apparent quantum efficiency of 10.14 %, which was 35-fold higher than that of pristine TiO 2 NFs. X-ray photoelectron spectroscopy (XPS) analysis and density functional theory calculation implied that the electrons transferred from CdS to TiO 2 upon hybridization and created an internal electric field (IEF) pointing from CdS to TiO 2 . This IEF drove the photoexcited electrons in TiO 2 to transfer toward CdS upon light irradiation as revealed by in situ irradiated XPS analysis, suggesting that a step-scheme (Sscheme) heterojunction was formed in the TiO 2 /CdS nanohybrids and greatly promoted the separation of electron-hole pairs to foster efficient H 2 photogeneration. The significant enhancement of photocatalytic activity was also benefited from the easy transfer for electrons in the 1D well-distributed nanostructure of nanohybrids. This

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Section: Introductionmentioning

confidence: 99%

S‐Scheme Heterojunction TiO₂/CdS Nanocomposite Nanofiber as H₂‐Production Photocatalyst

et al. 2019

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“…According to the Tauc equation αhν = A ( hν − E g ) n , 40 the band gap energy of the samples can be estimated by plotting the photon energy ( hν ) by ( αhν ) 1/2 , as shown in Fig. 4b .…”

Section: Resultsmentioning

confidence: 99%

Facile strategy for the fabrication of noble metal/ZnS composites with enhanced photocatalytic activities

et al. 2020

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“…This process promoted the separation of electrons−holes between BiOCl and dye. Additionally, small Bi 2 O 2 CO 3 NPs decorated with BiOCl nanosheets enclosed by {001} facets have been achieved by a solvothermal strategy, 193 which showed high removal efficiency for RhB under visible light irradiation due to the synergistic effect of heterojunction and exposed high energy {001} facets. However, the above reports have not discussed the Fermi levels and energy band structures of different semiconductors before contact, so DFT calculations should be strong, and the photocatalytic mechanisms still need to be further investigated.…”

Section: Bimentioning

confidence: 99%

Synthesis, Functional Modifications, and Diversified Applications of Hybrid BiOCl-Based Heterogeneous Photocatalysts: A Review

Yang

Sun

Cui

et al. 2021

Crystal Growth & Design

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The construction and regulation of heterogeneous interfaces are beneficial to improve solar light harvesting and photocharge separation of hybrid BiOCl-based photocatalysts, which are attributed to the synergistic effects that originate from the integrated interaction between disparate components. With the rapid development of synthetic technologies, hybrid BiOCl-based micro-/nanostructures with diversified components, morphologies, and sizes have been well prepared. Moreover, hybrid BiOCl-based photocatalysts have presented a promising potential for various photocatalytic applications, such as organic pollutant degradation, hydrogen production, NO removal, CO2 reduction, heavy metal ion detection, disinfection, nitrogen fixation, and alcohol oxidation. Previously, several review articles have mainly summarized the advances made in synthetic methods, morphological control, modification strategies, and applications of the bare BiOCl micro-/nanostructures. However, a comprehensive overview based on the type of species and the corresponding correlations between microstructures, performances, as well as photocatalytic mechanisms has been less reported for hybrid BiOCl-based photocatalysts so far. Therefore, a comprehensive understanding of the basic theory and research progress of hybrid BiOCl-based photocatalysts is imperative. This review aims to provide an overview of the important advances made in eight types of hybrid BiOCl-based photocatalysts, including metal/BiOCl, metal oxide/BiOCl, metal sulfide/BiOCl, BiOX (X = Cl, Br, I)/BiOCl, AgX (X = Cl, Br, I)/BiOCl, organics/BiOCl, carbon/BiOCl, and other BiOCl-based multicomponents. In each classification, the synthetic methods, modification strategies, relationships between interfacial microstructures, and enhanced performances are discussed based on some typical examples. Additionally, some scientific issues and potential directions are also given. Hopefully, this review paper will provide a useful reference for researchers currently focusing on exploring new BiOCl-based photocatalysts.

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One-step in situ synthesis of BiOCl/(BiO)₂CO₃ composite photocatalysts with exposed high-energy {001} facets

Abstract: BiOCl/(BiO)2CO3 composites with reactive exposed {001} facets have been synthesized by a one-step in situ solvothermal method. The synergistic effect of type-II band alignment and exposed high-energy facets enhances photocatalytic activity.

Cited by 18 publications

References 52 publications

S‐Scheme Heterojunction TiO₂/CdS Nanocomposite Nanofiber as H₂‐Production Photocatalyst

S‐Scheme Heterojunction TiO₂/CdS Nanocomposite Nanofiber as H₂‐Production Photocatalyst

Facile strategy for the fabrication of noble metal/ZnS composites with enhanced photocatalytic activities

Synthesis, Functional Modifications, and Diversified Applications of Hybrid BiOCl-Based Heterogeneous Photocatalysts: A Review

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One-step in situ synthesis of BiOCl/(BiO)2CO3 composite photocatalysts with exposed high-energy {001} facets

Abstract: BiOCl/(BiO)2CO3 composites with reactive exposed {001} facets have been synthesized by a one-step in situ solvothermal method. The synergistic effect of type-II band alignment and exposed high-energy facets enhances photocatalytic activity.

Cited by 18 publications

References 52 publications

S‐Scheme Heterojunction TiO2/CdS Nanocomposite Nanofiber as H2‐Production Photocatalyst

S‐Scheme Heterojunction TiO2/CdS Nanocomposite Nanofiber as H2‐Production Photocatalyst

Facile strategy for the fabrication of noble metal/ZnS composites with enhanced photocatalytic activities

Synthesis, Functional Modifications, and Diversified Applications of Hybrid BiOCl-Based Heterogeneous Photocatalysts: A Review

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One-step in situ synthesis of BiOCl/(BiO)₂CO₃ composite photocatalysts with exposed high-energy {001} facets

S‐Scheme Heterojunction TiO₂/CdS Nanocomposite Nanofiber as H₂‐Production Photocatalyst

S‐Scheme Heterojunction TiO₂/CdS Nanocomposite Nanofiber as H₂‐Production Photocatalyst