Photocatalytic degradation of rhodamine B and phenol over BiFeO3/BiOCl nanocomposite

Shang, Jun; Chen, Huige; Chen, Tingzhen; Wang, Xianwei; Feng, Gang; Zhu, Mengwei; Yang, Yuxuan; Jia, Xusheng

doi:10.1007/s00339-019-2437-8

Cited by 19 publications

(11 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The polarization electric field can promote the spatial separation of photogenerated electron/hole pairs, making BiOX exhibit a superior photocatalytic activity for the degradation of organic dyes. Moreover, much work has been devoted to the incorporation of BiOX with other semiconductors to form excellent heterojunction composite photocatalysts [20][21][22][23][24]. Due to the efficient separation of electron/hole pairs resulting from the charge transfer between the two semiconductors, those heterojunction composite photocatalysts generally exhibit photocatalytic performances superior to single semiconductor photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

NaBH4-Reduction Induced Evolution of Bi Nanoparticles from BiOCl Nanoplates and Construction of Promising Bi@BiOCl Hybrid Photocatalysts

Yan

Yang

et al. 2019

Catalysts

View full text Add to dashboard Cite

In this work, we have synthesized BiOCl nanoplates (diameter 140–220 nm, thickness 60–70 nm) via a co-precipitation method, and then created Bi nanoparticles (diameter 35–50 nm) on the surface of BiOCl nanoplates via a NaBH4 reduction method. By varying the NaBH4 concentration and reaction time, the evolution of Bi nanoparticles was systematically investigated. It is demonstrated that with increasing the NaBH4 concentration (at a fixing reaction time of 30 min), BiOCl crystals are gradually reduced into Bi nanoparticles, and pure Bi nanoparticles are formed at 120 mM NaBH4 solution treatment. At low-concentration NaBH4 solutions (e.g., 10 and 30 mM), with increasing the reaction time, BiOCl crystals are partially reduced into Bi nanoparticles, and then the Bi nanoparticles return to form BiOCl crystals. At high-concentration NaBH4 solutions (e.g., 120 mM), BiOCl crystals are reduced to Bi nanoparticles completely with a short reaction time, and further prolong the treatment time leads to the transformation of the Bi nanoparticles into a two-phase mixture of BiOCl and Bi2O3 nanowires. The photodegradation performances of the samples were investigated by choosing rhodamine B (RhB) as the model pollutant and using simulated sunlight as the light source. It is demonstrated that an enhanced photodegradation performance can be achieved for the created Bi@BiOCl hybrid composites with appropriate NaBH4 treatment. The underlying photocatalytic mechanism was systematically investigated and discussed.

show abstract

Section: Introductionmentioning

confidence: 99%

NaBH4-Reduction Induced Evolution of Bi Nanoparticles from BiOCl Nanoplates and Construction of Promising Bi@BiOCl Hybrid Photocatalysts

Yan

Yang

et al. 2019

Catalysts

View full text Add to dashboard Cite

show abstract

“…From the High‐resolution transmission electron microscopy (HRTEM) image, the lattice fringes with an interplanar spacing of 0.35 nm were observed, which correspond to the lattice constant of the (101) plane of anatase‐phase TiO 2. In addition, the HRTEM results also reveal the formation of the close interface contact between g‐C 3 N 4 and TiO 2 nanorods, which is of benefit for the rapid charge separation in the electron‐transfer process and photocatalytic enhancement . As shown in Figure b, the C, N, O, and Ti elements are observed simultaneously from the element mapping of the g‐C 3 N 4 /TiO 2 composite.…”

Section: Resultsmentioning

confidence: 99%

Construction of direct Z‐scheme g‐C₃N₄/TiO₂ nanorod composites for promoting photocatalytic activity

Liu

Wei

Chen

et al. 2019

J Chinese Chemical Soc

View full text Add to dashboard Cite

Direct Z‐scheme g‐C3N4/TiO2 nanorod composites were prepared for enhancing photocatalytic activity for pollutant removal. The characterization revealed that the g‐C3N4/TiO2 nanorod composite formed a close interface contact between g‐C3N4 and TiO2 nanorods, which was of benefit for the charge transfer and resulted in its high photocatalytic activity. The g‐C3N4/TiO2 nanorod composites exhibited higher photocatalytic activity for degradation of Rhodamine B (RHB) than bare g‐C3N4 and TiO2 nanorods. The high photocatalytic activity of g‐C3N4/TiO2 nanorod composites is attributed to the formation of the direct Z‐scheme system, in which the electrons from the conduction band (CB) of TiO2 combine with the holes from the valence band (VB) of C3N4 while the electrons from the CB of C3N4 and holes from the VB of TiO2 with stronger redox ability are used to reduce and oxidize pollutants. Based on the radical‐trapping experiments, the main reactive species for RHB degradation are O2− and ·OH, which are produced by photoinduced electrons and holes with high redox ability. This work provides insights into the photocatalytic mechanism of composite materials for the photocatalytic removal of organic pollutants.

show abstract

“…27 This last study reported the creation of BiOCl/BFO heterojunctions by acid etching to facilitate photocatalytic degradation of RhB and phenol. 27 Most of BiOCl-based composite nanostructures are synthesized by hydrothermal, solvothermal or precipitation techniques. 28 However, such synthesis methods remain challenging and unfit for large-scale production.…”

Section: Introductionmentioning

confidence: 99%

Screen-printed p–n BiOCl/BiFeO₃ heterojunctions for efficient photocatalytic degradation of Rhodamine B

Fourmont

Cloutier

2022

RSC Adv.

View full text Add to dashboard Cite

show abstract

Photocatalytic degradation of rhodamine B and phenol over BiFeO3/BiOCl nanocomposite

Cited by 19 publications

References 17 publications

NaBH4-Reduction Induced Evolution of Bi Nanoparticles from BiOCl Nanoplates and Construction of Promising Bi@BiOCl Hybrid Photocatalysts

NaBH4-Reduction Induced Evolution of Bi Nanoparticles from BiOCl Nanoplates and Construction of Promising Bi@BiOCl Hybrid Photocatalysts

Construction of direct Z‐scheme g‐C₃N₄/TiO₂ nanorod composites for promoting photocatalytic activity

Screen-printed p–n BiOCl/BiFeO₃ heterojunctions for efficient photocatalytic degradation of Rhodamine B

Contact Info

Product

Resources

About

Photocatalytic degradation of rhodamine B and phenol over BiFeO3/BiOCl nanocomposite

Cited by 19 publications

References 17 publications

NaBH4-Reduction Induced Evolution of Bi Nanoparticles from BiOCl Nanoplates and Construction of Promising Bi@BiOCl Hybrid Photocatalysts

NaBH4-Reduction Induced Evolution of Bi Nanoparticles from BiOCl Nanoplates and Construction of Promising Bi@BiOCl Hybrid Photocatalysts

Construction of direct Z‐scheme g‐C3N4/TiO2 nanorod composites for promoting photocatalytic activity

Screen-printed p–n BiOCl/BiFeO3 heterojunctions for efficient photocatalytic degradation of Rhodamine B

Contact Info

Product

Resources

About

Construction of direct Z‐scheme g‐C₃N₄/TiO₂ nanorod composites for promoting photocatalytic activity

Screen-printed p–n BiOCl/BiFeO₃ heterojunctions for efficient photocatalytic degradation of Rhodamine B