Preparation of BiOClxBryIz Composite Catalysts and Its Visible Light Catalytic Degradation of Methyl Orange

Xiya Guo; Jinling Song; Baoying Wang; Xueling Zhu

doi:10.3788/AOS202141.1116003

Acta Optica Sinica, Volume. 41, Issue 11, 1116003(2021)

Preparation of BiOCl_xBr_yI_z Composite Catalysts and Its Visible Light Catalytic Degradation of Methyl Orange

Xiya Guo, Jinling Song^*, Baoying Wang, and Xueling Zhu

School of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(13)

Fig. 1. XRD patterns of pure BiOX and BiOCl_xBr_yI_z composite catalysts. (a) Pure BiOX; (b) BiOCl_xBr_yI_z composite catalysts

Download full size

Fig. 2. SEM images of BiOCl_0.33Br_0.33I_0.33 composite catalyst

Download full size

Fig. 3. EDS spectrum and mapping images of BiOCl_0.33Br_0.33I_0.33 catalyst. (a) SEM image; (b) EDS spectrum; (c)--(h) mapping images

Download full size

Fig. 4. TEM images of BiOCl_0.33Br_0.33I_0.33 catalyst

Download full size

Fig. 5. XPS spectra of BiOCl_0.33Br_0.33I_0.33 composite catalyst. (a) Survey spectrum; (b) Bi 4f; (c) O 1s; (d) Cl 2p; (e) Br 3d; (f) I 3d

Download full size

Fig. 6. UV-Vis diffuse reflectance spectra and (αhν)^1/2-hν diagrams (inside) of BiOCl_xBr_yI_z composite catalysts

Download full size

Fig. 7. PL spectra of BiOCl_xBr_yI_z composite catalysts

Download full size

Fig. 8. Efficiency graphs of BiOCl_xBr_yI_z composite catalysts and pure BiOX degrading 15 mg/L MO

Download full size

Fig. 9. Reaction kinetics diagrams of BiOCl_xBr_yI_z composite catalysts degrading 15 mg/L MO

Download full size

Table 1. Dosage table of NaX in the preparation of BiOCl_xBr_yI_z catalysts

View table

Table 1. Dosage table of NaX in the preparation of BiOCl_xBr_yI_z catalysts

BiOCl_xBr_yI_z	Dosage of NaCl /g	Dosage of NaBr /g	Dosage of NaI·2H₂O /g
BiOCl_0.1Br_0.1I_0.8	0.0351	0.0617	0.8924
BiOCl_0.1Br_0.8I_0.1	0.0351	0.4939	0.1116
BiOCl_0.2Br_0.2I_0.6	0.0702	0.1235	0.6693
BiOCl_0.2Br_0.6I_0.2	0.0702	0.3704	0.2231
BiOCl_0.33Br_0.33I_0.33	0.1157	0.2037	0.3681
BiOCl_0.6Br_0.2I_0.2	0.2104	0.1235	0.2231
BiOCl_0.8Br_0.1I_0.1	0.2805	0.0617	0.1116

Table 2. EDS analysis of each element in BiOCl_0.33Br_0.33I_0.33 composite catalyst
View table
Table 2. EDS analysis of each element in BiOCl_0.33Br_0.33I_0.33 composite catalyst
Element Bi C Br I O Cl
Mass fraction /% 61.57 10.07 9.71 9.13 4.83 4.68
Atomic fraction /% 16.73 47.62 6.90 4.09 17.15 7.50

Table 3. Band gaps, degradation efficiencies and kinetic constants of BiOCl_xBr_yI_z composite catalysts

View table

Table 3. Band gaps, degradation efficiencies and kinetic constants of BiOCl_xBr_yI_z composite catalysts

BiOCl_xBr_yI_z	Band gapE_g /eV	Degradationefficiencyη /%	Kineticconstant k /(10^-2 min^-1)
BiOCl_0.33Br_0.33I_0.33	1.83	98.4	2.160
BiOCl_0.2Br_0.6I_0.2	2.06	96.2	1.820
BiOCl_0.2Br_0.2I_0.6	1.70	90.5	1.310
BiOCl_0.1Br_0.1I_0.8	1.65	82.0	0.931
BiOCl_0.6Br_0.2I_0.2	2.13	70.1	0.654
BiOCl_0.8Br_0.1I_0.1	2.36	43.0	0.318

Table 4. Photocatalytic activity of different BiOX_s catalysts

View table

Table 4. Photocatalytic activity of different BiOX_s catalysts

Catalyst and its mass	Contaminant and itsmass concentration	Light source	Degradationefficiency	α_TOF /(g·g^-1·min^-1)	Ref.
BiOI (0.100 g)	MO (10 mg·L^-1)	500 W Xe lamp(λ>420 nm)	360(95)	0.006	[11]
BiOCl_0.5Br_0.5(0.050 g)	MO (20 mg·L^-1)	300 W Xe lamp (λ>400 nm)	70(100)	0.022	[12]
BiOBr_0.4I_0.6 (1.000 g)	MO (20 mg·L^-1)	500 W Xe lamp (λ>400 nm)	90(92.6)	0.021	[13]
BiOCl_0.75I_0.25 (0.200 g)	MO (20 mg·L^-1)	500 W Xe lamp (λ>420 nm)	50(100)	0.020	[15]
BiOCl_0.5I_0.5 (0.020 g)	MO (15 mg·L^-1)	300 W Xe lamp (λ>400 nm)	180(83.0)	0.035	[21]
Er³⁺-Bi₅O₇I (0.04 g)	MO (10 mg·L^-1)	5 W LED lamp	90(70)	0.0077	[22]
BiOCl_0.33Br_0.33I_0.33 (0.020 g)	MO (15 mg·L^-1)	300 W Xe lamp (λ>400 nm)	180(98.4)	0.041	This work
Note:α_TOF= $\frac{CVη}{mt}$ ×100%, where C represents the original concentration of the simulated pollutant methyl orange, V represents the volume of the methyl orange solution, η represents the degradation efficiency of the methyl orange by the catalyst, m represents the quality of the catalyst, and t represents the duration of light.

Tools

Get Citation

Copy Citation Text

Xiya Guo, Jinling Song, Baoying Wang, Xueling Zhu. Preparation of BiOCl_xBr_yI_z Composite Catalysts and Its Visible Light Catalytic Degradation of Methyl Orange[J]. Acta Optica Sinica, 2021, 41(11): 1116003

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites

Paper Information

Category: Materials

Received: Sep. 9, 2020

Accepted: Jan. 8, 2021

Published Online: Jun. 7, 2021

The Author Email: Song Jinling (sjl2010004@imust.edu.cn)

DOI:10.3788/AOS202141.1116003

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Dosage table of NaX in the preparation of BiOClxBryIz catalysts

Table 1. Dosage table of NaX in the preparation of BiOClxBryIz catalysts

Table 2. EDS analysis of each element in BiOCl0.33Br0.33I0.33 composite catalyst

Table 2. EDS analysis of each element in BiOCl0.33Br0.33I0.33 composite catalyst

Table 3. Band gaps, degradation efficiencies and kinetic constants of BiOClxBryIz composite catalysts

Table 3. Band gaps, degradation efficiencies and kinetic constants of BiOClxBryIz composite catalysts

Table 4. Photocatalytic activity of different BiOXs catalysts

Table 4. Photocatalytic activity of different BiOXs catalysts

Table 1. Dosage table of NaX in the preparation of BiOCl_xBr_yI_z catalysts

Table 1. Dosage table of NaX in the preparation of BiOCl_xBr_yI_z catalysts

Table 2. EDS analysis of each element in BiOCl_0.33Br_0.33I_0.33 composite catalyst

Table 2. EDS analysis of each element in BiOCl_0.33Br_0.33I_0.33 composite catalyst

Table 3. Band gaps, degradation efficiencies and kinetic constants of BiOCl_xBr_yI_z composite catalysts

Table 3. Band gaps, degradation efficiencies and kinetic constants of BiOCl_xBr_yI_z composite catalysts

Table 4. Photocatalytic activity of different BiOX_s catalysts

Table 4. Photocatalytic activity of different BiOX_s catalysts