Facile hydrothermal synthesis of Bi/BiOBr composites with enhanced visible-light photocatalytic activities for the degradation of rhodamine B

Gao, Meichao; Zhang, Dafeng; Pu, Xipeng; Li, Hong; Lv, Dongdong; Zhang, Bingbing; Shao, Xin

doi:10.1016/j.seppur.2015.09.063

Cited by 65 publications

(16 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As shown in Figure A, Bi/BiOBr:Yb,Er/C has an obvious wrinkled morphology, which can be ascribed to the formation of carbon species. In corresponding high‐resolution TEM (HRTEM) images (Figure B), similar with that of Bi/BiOBr/C (Figure ), 2 d spacings of 0.278 nm and 0.328 nm are found and can be indexed to (110) plane of BiOBr and (012) plane of metallic Bi, respectively . It is interesting to note that the (110) facet spacings of BiOBr is slightly decreased (Figure B), due to smaller radii of Yb 3+ and Er 3+ ions than that of Bi 3+ , which agrees well with the peak shift in XRD pattern.…”

Section: Resultsmentioning

confidence: 60%

“…In this decade, bismuth oxybromide (BiOBr) has received much attention due to its unique layered‐structure mediated fantastic optical and electronic properties. However, BiOBr has a band gap energy of about 2.8 eV, which means that it can only utilize the solar light only far to wavelength of 443 nm . In recent years, the rare earth‐doped BiOX (X = Cl, Br, I) with NIR up‐conversion properties began to be reported, such as Yb/Er‐doped BiOX (X = Cl, Br) nanoplates, layered BiOCl:Er 3+ poly‐crystals, polycrystalline BiOCl:Er 3+ /Yb 3+ , etc.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

One‐pot combustion synthesis and efficient broad spectrum photoactivity of Bi/BiOBr:Yb,Er/C photocatalyst

Liang

Zhang

et al. 2018

J Am Ceram Soc

Self Cite

View full text Add to dashboard Cite

A highly efficient broad spectrum responsive Bi/BiOBr:Yb,Er/C ternary composite was synthesized by a simple one-pot combustion method using nitrates and citric acid as raw materials. Experimental results show that Er 3+ /Yb 3+ were successfully doped into BiOBr lattice, and metallic Bi nanoparticles and carbon species were formed simultaneously. Compared with pure BiOBr and Bi/BiOBr/C, as-synthesized Bi/BiOBr:Yb,Er/C ternary photocatalyst is highly responsive in the UV-visible-NIR range, and possesses the best photodegradation performance for Rhodamine B, phenol, and imidacloprid under visible, NIR, or solar light irradiation, which can be attributed to the synergetic effects of surface plasma resonance of metallic Bi, up-conversion transition of Er 3+ and heterojunctions (Bi/BiOBr, Bi/C, and BiOBr/C). Moreover, a plausible mechanism was given, the main active species, and photostability of samples were studied. The solar light photoactivity and influences of pH value and anions (Cl À , SO 4 2À , CO 3 2À , HCO 3 À , and NO 3 À )were also investigated. This study highlights the advantages of synergetic effects of SPR, up-conversion and heterojunctions, which provides a useful guide toward the rational design of broad spectrum (UV-visible-near infrared) photocatalysts.

show abstract

Section: Resultsmentioning

confidence: 60%

Section: Introductionmentioning

confidence: 99%

One‐pot combustion synthesis and efficient broad spectrum photoactivity of Bi/BiOBr:Yb,Er/C photocatalyst

Liang

Zhang

et al. 2018

J Am Ceram Soc

Self Cite

View full text Add to dashboard Cite

show abstract

“…The HRTEM images of Bi 2 O 2 CO 3 and Bi–Bi 2 O 2 CO 3 exhibit a high crystallinity of Bi 2 O 2 CO 3 nanosheet and Bi nanoparticles as given in Fig. 2c, d. The inter-planar distance between the fringes are about 0.276 and 0.32 nm, which correspond to the (110) crystal plane of Bi 2 O 2 CO 3 and (012) crystal plane of Bi nanoparticles, respectively [38, 47]. The selected area electron diffraction (SAED) pattern obtained from the HRTEM images (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Several Bi nanoparticles based nanocomposites like Bi/BiOCl, Bi/Bi 2 O 3, and Bi/BiOI exhibit enhanced photocatalytic activity comparing to their counterpart [35–37]. Recently, Bi nanoparticles based heterojunctions with semiconductor have been an intense research area due to their enhanced charge separation and improved photocatalytic efficacies [38–40]. However, Bi nanoparticles decorated Bi 2 O 2 CO 3 nanosheets have not been considered up to date.…”

Section: Introductionmentioning

confidence: 99%

In-Situ Hydrothermal Synthesis of Bi–Bi2O2CO3 Heterojunction Photocatalyst with Enhanced Visible Light Photocatalytic Activity

et al. 2016

View full text Add to dashboard Cite

Bismuth containing nanomaterials recently received increasing attention with respect to environmental applications because of their low cost, high stability and nontoxicity. In this work, Bi–Bi2O2CO3 heterojunctions were fabricated by in-situ decoration of Bi nanoparticles on Bi2O2CO3 nanosheets via a simple hydrothermal synthesis approach. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high-resolution TEM (HRTEM) were used to confirm the morphology of the nanosheet-like heterostructure of the Bi–Bi2O2CO3 composite. Detailed ultrafast electronic spectroscopy reveals that the in-situ decoration of Bi nanoparticles on Bi2O2CO3 nanosheets exhibit a dramatically enhanced electron-hole pair separation rate, which results in an extraordinarily high photocatalytic activity for the degradation of a model organic dye, methylene blue (MB) under visible light illumination. Cycling experiments revealed a good photochemical stability of the Bi–Bi2O2CO3 heterojunction under repeated irradiation. Photocurrent measurements further indicated that the heterojunction incredibly enhanced the charge generation and suppressed the charge recombination of photogenerated electron-hole pairs.

show abstract

“…Therefore, the construction of composites based on the graphenelike BN, matrix for achieving effective photocatalytic performance has been widely studied . As a novel layered semiconductor material, BiOBr is drawing much attention because of its excellent electrical properties, suitable ribbon position, and excellent visible‐light photocatalytic performance , . In this paper, the composite of g‐C 3 N 4 and BiOBr were successfully prepared, the synthesized g‐C 3 N 4 /BiOBr heterojunction forms a Z‐type structure.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Flowerlike g‐C₃N₄/BiOBr with Enhanced Visible Light Photocatalytic Activity for Dye Degradation

et al. 2018

View full text Add to dashboard Cite

In this work, flowerlike g-C 3 N 4 /BiOBr Z-scheme composites were constructed by a simple solvothermal method. The physical and chemical properties of the material were characterized mainly by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), and UV/Vis diffuse reflectance spectroscopy. The photocatalytic performance of the as-prepared samples was measured by degradation of the model organic pollutant methyl orange (MO) dye and rhodamine B (RhB). The decrease [a] College

show abstract

Facile hydrothermal synthesis of Bi/BiOBr composites with enhanced visible-light photocatalytic activities for the degradation of rhodamine B

Cited by 65 publications

References 25 publications

One‐pot combustion synthesis and efficient broad spectrum photoactivity of Bi/BiOBr:Yb,Er/C photocatalyst

One‐pot combustion synthesis and efficient broad spectrum photoactivity of Bi/BiOBr:Yb,Er/C photocatalyst

In-Situ Hydrothermal Synthesis of Bi–Bi2O2CO3 Heterojunction Photocatalyst with Enhanced Visible Light Photocatalytic Activity

Synthesis of Flowerlike g‐C₃N₄/BiOBr with Enhanced Visible Light Photocatalytic Activity for Dye Degradation

Contact Info

Product

Resources

About

Facile hydrothermal synthesis of Bi/BiOBr composites with enhanced visible-light photocatalytic activities for the degradation of rhodamine B

Cited by 65 publications

References 25 publications

One‐pot combustion synthesis and efficient broad spectrum photoactivity of Bi/BiOBr:Yb,Er/C photocatalyst

One‐pot combustion synthesis and efficient broad spectrum photoactivity of Bi/BiOBr:Yb,Er/C photocatalyst

In-Situ Hydrothermal Synthesis of Bi–Bi2O2CO3 Heterojunction Photocatalyst with Enhanced Visible Light Photocatalytic Activity

Synthesis of Flowerlike g‐C3N4/BiOBr with Enhanced Visible Light Photocatalytic Activity for Dye Degradation

Contact Info

Product

Resources

About

Synthesis of Flowerlike g‐C₃N₄/BiOBr with Enhanced Visible Light Photocatalytic Activity for Dye Degradation