A series of BiO<sub>x</sub>I<sub>y</sub>/GO photocatalysts: synthesis, characterization, activity, and mechanism

Chou, Shang-Yi; Chung, Wen‐Hsin; Chen, Liwen; Dai, Yong‐Ming; Lin, Wan‐Yu; Lin, Jiahao; Chen, Chiing‐Chang

doi:10.1039/c6ra12482h

Cited by 103 publications

(23 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Semiconductors such as bismuth oxybromide–bismuth oxyiodide [1], β-ZnMoO 4 [2], metal–organic frameworks (MOFs) [3], and BiOxIy/GO [4] can facilitate the photodegradation of dyes. Bismuth oxides and their composites (e.g., bismuth oxyiodides [5], bismuth oxyiodide/graphitic carbon nitride [6], and BiO x I y /GO [7]) have been widely used for photocatalytic degradation of dyes, owing to their superior photocatalytic traits.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Bi2S3/BiVO4 Heterojunction with a One-Step Hydrothermal Method Based on pH Control and the Evaluation of Visible-Light Photocatalytic Performance

Zhao

Wang²,

Zong

et al. 2017

Materials

View full text Add to dashboard Cite

The band gaps of bismuth vanadate (BiVO4) and bismuth sulfide (Bi2S3) are about 2.40 eV and 1.30 eV, respectively. Although both BiVO4 and Bi2S3 are capable of strong visible light absorption, electron–hole recombination occurs easily. To solve this problem, we designed a one-step hydrothermal method for synthesizing a Bismuth sulfide (Bi2S3)/Bismuth vanadate (BiVO4) heterojunction using polyvinylpyrrolidone K-30 (PVP) as a structure-directing agent, and 2-Amino-3-mercaptopropanoic acid (l-cysteine) as a sulfur source. The pH of the reaction solution was regulated to yield different products: when the pH was 7.5, only monoclinic BiVO4 was produced (sample 7.5); when the pH was 8.0 or 8.5, both Bi2S3 and BiVO4 were produced (samples 8.0 and 8.5); and when the pH was 9.0, only Bi2S3 was produced (sample 9.0). In sample 8.0, Bi2S3 and BiVO4 were closely integrated with each other, with Bi2S3 particles formed on the surface of concentric BiVO4 layers, but the two compounds grew separately in a pH solution of 8.5. Visible-light photocatalytic degradation experiments demonstrated that the degradation efficiency of the Bi2S3/BiVO4 heterojunction was highest when prepared under a pH of 8.0. The initial rhodamine B in the solution (5 mg/L) was completely degraded within three hours. Recycling experiments verified the high stability of Bi2S3/BiVO4. The synthesis method proposed in this paper is expected to enable large-scale and practical use of Bi2S3/BiVO4.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis of Bi2S3/BiVO4 Heterojunction with a One-Step Hydrothermal Method Based on pH Control and the Evaluation of Visible-Light Photocatalytic Performance

Zhao

Wang²,

Zong

et al. 2017

Materials

View full text Add to dashboard Cite

show abstract

“…In contrast, the adsorption isotherm of Bi 5 O 7 I is specified as type II, suggesting the characteristic of nonporous materials, which is confirmed by the pore size distribution. The total surface areas of BiOI and Bi 7 O 9 I 3 are 40.59 and 51.72 m 2 /g, respectively, but that of 12.67 m 2 /g on Bi 5 O 7 I is lower (Table ), which is attributed to the densification and agglomeration of nanosheets during the heat treatment process of generating Bi 5 O 7 I from Bi 7 O 9 I 3 …”

Section: Resultsmentioning

confidence: 99%

Influence of the Chemical Compositions of Bismuth Oxyiodides on the Electroreduction of Carbon Dioxide to Formate

Wang

Zhang

et al. 2020

ChemPlusChem

View full text Add to dashboard Cite

Bismuth oxyiodides with varying chemical compositions were fabricated to effectively electrochemical reduce CO 2 to formate. Bi 5 O 7 I and Bi 7 O 9 I 3 nanosheets assemble irregularly, and BiOI nanosheets form a sphere-like structure. Compared with BiOI and Bi 7 O 9 I 3 , Bi 5 O 7 I exhibits an excellent Faradaic efficiency of 89 % for formate production with the partial current density of 13.2 mA/cm 2 at À 0.89 V vs. RHE owing to the elevated amounts of Bi metal sites reduced from Bi 3 + during electrolysis. The partial current densities of formate on BiOI were higher than those on Bi 7 O 9 I 3 which is attributed to the higher iodine content. The synergistic effect of bismuth and iodine of bismuth oxyiodides is responsible for their electrocatalytic properties during CO 2 reduction in aqueous solutions.

show abstract

“…However, the hydroxyl radical is a highly active and non-selective oxidant agent species for degradation, which leads to mineralization of organic chemicals. [36][37][38][39][40][41] Degradation efficiency was determined by the following equation:…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Zn₃(VO₄)₂/BiVO₄ heterojunction composite for the photocatalytic degradation of methylene blue organic dye and electrochemical detection of H₂O₂

et al. 2018

View full text Add to dashboard Cite

show abstract

A series of BiO_xI_y/GO photocatalysts: synthesis, characterization, activity, and mechanism

Abstract: Four composites BiOI/GO, Bi4O5I2/GO, Bi7O9I3/GO, and Bi5O7I/GO.

Cited by 103 publications

References 67 publications

Synthesis of Bi2S3/BiVO4 Heterojunction with a One-Step Hydrothermal Method Based on pH Control and the Evaluation of Visible-Light Photocatalytic Performance

Synthesis of Bi2S3/BiVO4 Heterojunction with a One-Step Hydrothermal Method Based on pH Control and the Evaluation of Visible-Light Photocatalytic Performance

Influence of the Chemical Compositions of Bismuth Oxyiodides on the Electroreduction of Carbon Dioxide to Formate

Synthesis of Zn₃(VO₄)₂/BiVO₄ heterojunction composite for the photocatalytic degradation of methylene blue organic dye and electrochemical detection of H₂O₂

Contact Info

Product

Resources

About

A series of BiOxIy/GO photocatalysts: synthesis, characterization, activity, and mechanism

Abstract: Four composites BiOI/GO, Bi4O5I2/GO, Bi7O9I3/GO, and Bi5O7I/GO.

Cited by 103 publications

References 67 publications

Synthesis of Bi2S3/BiVO4 Heterojunction with a One-Step Hydrothermal Method Based on pH Control and the Evaluation of Visible-Light Photocatalytic Performance

Synthesis of Bi2S3/BiVO4 Heterojunction with a One-Step Hydrothermal Method Based on pH Control and the Evaluation of Visible-Light Photocatalytic Performance

Influence of the Chemical Compositions of Bismuth Oxyiodides on the Electroreduction of Carbon Dioxide to Formate

Synthesis of Zn3(VO4)2/BiVO4 heterojunction composite for the photocatalytic degradation of methylene blue organic dye and electrochemical detection of H2O2

Contact Info

Product

Resources

About

A series of BiO_xI_y/GO photocatalysts: synthesis, characterization, activity, and mechanism

Synthesis of Zn₃(VO₄)₂/BiVO₄ heterojunction composite for the photocatalytic degradation of methylene blue organic dye and electrochemical detection of H₂O₂