BiOCl-Ag8SnS6 heterostructure: Facile preparation and photocatalytic applications

Shambharkar, Baban H.; Chowdhury, Arpita Paul

doi:10.1016/j.jece.2018.02.046

Cited by 16 publications

(8 citation statements)

References 29 publications

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“…The BiOBr–CoWO 4 heterostructured nanocomposite was prepared using a precipitation route . The as‐prepared CoWO 4 nanoparticles (100 mg) were added into a beaker containing 0.02 M bismuth nitrate solution (100 ml), ethylene glycol (20 ml) and 1 g of potassium bromide.…”

Section: Methodsmentioning

confidence: 95%

Synthesis and photocatalytic properties of sunlight‐responsive BiOBr–CoWO₄ heterostructured nanocomposites

Chowdhury

Shambharkar

2020

Applied Organom Chemis

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Efficient sunlight‐responsive BiOBr–CoWO4 heterostructured nanocomposite photocatalysts were prepared via a chemical precipitation route at 100°C in 4 hours. The prepared BiOBr–CoWO4 heterostructures were characterized for phase identification, chemical composition, surface morphology, optical properties and surface area using various techniques. The X‐ray diffraction pattern of the BiOBr–CoWO4 nanocomposite was composed of diffraction peaks equivalent to both the tetragonal phase of BiOBr and the monoclinic phase of CoWO4 nanoparticles. X‐ray photoelectron spectral study of the BiOBr–CoWO4 nanocomposite revealed orbitals of both BiOBr and CoWO4 compounds. Transmission electron microscopy images revealed that spherical particles of CoWO4 (20–25 nm) were dispersed on the surface of BiOBr. UV–visible–near‐infrared spectral study of the BiOBr–CoWO4 nanocomposite showed good visible‐light absorption. Among the manufactured materials, BiOBr–CoWO4‐2 nanocomposite showed better charge carrier separation efficiency, as demonstrated by photoluminescence and time‐resolved fluorescence. To study the practical utility of the prepared materials, their photocatalytic capability was examined for the degradation of rhodamine B (RhB) aqueous solution under sunlight irradiation. The photodegradation results showed that BiOBr–CoWO4‐2 nanocomposite degraded 98.69% RhB solution and the degradation constant was 0.067 min−1, which was 5.6 and 22.5 times larger than that of pure BiOBr and CoWO4 nanoparticles, respectively, after 60 minutes of sunlight irradiation. The superior photoactivity was facilitated by electron–hole pair separation and transfer driven by the heterostructure interface between BiOBr particles and CoWO4 nanoparticles. The removal of RhB was initiated by photogenerated h+, O2•−and •OH reactive species based on the scavenger effect.

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Section: Methodsmentioning

confidence: 95%

Synthesis and photocatalytic properties of sunlight‐responsive BiOBr–CoWO₄ heterostructured nanocomposites

Chowdhury

Shambharkar

2020

Applied Organom Chemis

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“…Additionally, the degradation efficiency of our present photocatalytic system is compared with those of other recently reported photocatalysts for the photocatalytic degradation of CR, and the results are summarized in Table 1. [61][62][63][64][65][66] The results demonstrate that PEG-doped BiZn 2 VO 6 (0.10% w/v) is a better photocatalyst with respect to the duration of reaction and degradation efficiency.…”

Section: Evaluation Of Photocatalytic Performancementioning

confidence: 99%

Polyethylene glycol-doped BiZn₂VO₆as a high-efficiency solar-light-activated photocatalyst with substantial durability toward photodegradation of organic contaminations

et al. 2018

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In this study, we focus on a simple, low-priced, and mild condition hydrothermal route to construct BiZn 2 VO 6 nanocompounds (NCs) as a novel photocatalyst with strong solar light absorption ability for environmental purification using solar energy. NCs were further doped with polyethylene glycol (PEG) to improve their photocatalytic efficiency for photodegradation processes through inhibition of fast charge carrier recombination rates and higher charge separation efficiency. Surface morphology, phase structure, optical characteristics, and band structure of the as-prepared samples were analyzed using XRD, EDX, XPS, SEM, UV-vis spectroscopy, CL, and BET techniques. PEG-doped BiZn 2 VO 6 NCs were applied as effective materials to degrade various kinds of organic pollutants including cationic and anionic types, and these NCs exhibited excellent photocatalytic efficiency as compared to traditional photocatalysts. In particular, the PEG-doped BiZn 2 VO 6 (0.10% w/v) photocatalyst exhibited highly enhanced photocatalytic performance with improvements of about 46.4, 28.3, and 7.23 folds compared with PEG-doped ZnO nanorods (NRs), pristine BiVO 4 , and BiZn 2 VO 6 samples, respectively, for the decomposition of congo red (CR) dye. After 40 minutes of sunlight irradiation, 97.4% of CR was decomposed. In this study, scavenging experiments indicated that both hydroxyl radicals and holes play dominant roles in CR photodegradation under simulated solar light irradiation. Meanwhile, the optimal photocatalyst demonstrated good reproducibility and stability for successive cycles of photocatalysis.All chemicals of analytical grade were obtained from Sigma-Aldrich, Germany, and were used without further purication. Also, deionized water was employed for all experiments. This journal isView Article Online a [*]: Xe ¼ xenon, MO ¼ methyl orange, RhB ¼ rhodamine B, MV ¼ methyl violet, TC ¼ tetracycline, TC-HCl ¼ tetracycline hydrochloride, AB 10B ¼ amido black 10B, 4-NP ¼ 4-nitrophenol, MB ¼ methylene blue, CR ¼ congo red.This journal is

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“…Similar procedure was followed for preparing BiOCl-Cu 2 ZnSnS 4 -2 using 150 mg of Cu 2 ZnSnS 4 QDs. BiOCl microspheres were obtained from our published procedure (Shambharkar and Chowdhury 2018).…”

Section: Production Of Cu 2 Znsns 4 Qds Biocl and Biocl-cu 2 Znsns 4mentioning

confidence: 99%

“…The improved photocatalytic activity of BiOCl-Cu 2 ZnSnS 4 was endorsed to the formation of heterostructure between BiOCl and Cu 2 ZnSnS 4 QDs that improved separation and transport of photogenerated charge carriers. The degradation behavior of BiOCl-Cu 2 ZnSnS 4 was compared with commercial P25 TiO 2 and it was observed that the degradation efficiency of BiOCl-Cu 2 ZnSnS 4 was lesser than that of P25 TiO 2 towards Congo red (Shambharkar and Chowdhury 2018). The band edge positions of BiOCl and Cu 2 ZnSnS 4 (Zheng et al 2018;Cao et al 2013) were determined ( Table 1).…”

Section: Photocatalytic Performancementioning

confidence: 99%

“…BiOCl-based constructed heterostructures revealed the enhanced photocatalytic activity, for example, BiOCl-La 2 Ti 2 O 7 (Ao et al 2016), Bi 2 S 3 -BiOCl (Xu et al 2017), CdS-BiOCl (Pan et al 2018), BiOCl-ZnFe 2 O 4 (Sun et al 2018), AgCl-BiOCl (Cheng et al 2014), BiVO 4 -BiOCl (He et al 2014), Co 3 O 4 -BiOCl (Tana et al 2014), BiOCl-TiO 2 (Li et al 2016), Bi 3 O 4 Br/BiOCl (Gao et al 2010), BiOCl/C 3 N 4 (Huang et al 2017), α-Fe 2 O 3 / BiOCl (Zheng et al 2018), BiOCl-Ag 3 PO 4 (Cao et al 2013), BiOCl-Ag 2 CO 3 (Fang et al 2016), Ag-modified BiOCl (Yu et al 2017), BiOCl-SnO 2 (Sun et al 2015), Bi 2 MoO 6 -BiOCl (Zuo et al 2015), CdS/BiOCl (Lin et al 2017), BiOCl-Ag 8 SnS 6 (Shambharkar and Chowdhury 2018). This inspires us to fabricate a novel BiOCl-Cu 2 Zn-SnS 4 heterostructure with the hope of boosting visible light absorption capacity for better photocatalytic activity than their single component.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and characterization of BiOCl–Cu2ZnSnS4 heterostructure with enhanced photocatalytic activity

Chowdhury

Shambharkar

2018

Appl Water Sci

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Cu 2 ZnSnS 4 QDs (5-7 nm) were synthesized by chemical coprecipitation route. Using prepared Cu 2 ZnSnS 4 QDs, a new type of BiOCl-Cu 2 ZnSnS 4 heterostructures were prepared using bismuth nitrate as a precurssor and potassium chloride as a source of chlorine at 100 °C, 4 h. BiOCl-Cu 2 ZnSnS 4 heterostructures were analyzed by XRD, TEM, UV-visible NIR, PL and surface area studies. The diffracted peaks of BiOCl-Cu 2 ZnSnS 4 heterostructure show the presence of tetragonal BiOCl and did not show the intense peaks of Cu 2 ZnSnS 4 QDs. TEM images of BiOCl-Cu 2 ZnSnS 4 showed the deposition of Cu 2 ZnSnS 4 QDs on the BiOCl microsphere surface. The surface area of BiOCl, Cu 2 ZnSnS 4 and BiOCl-Cu 2 ZnSnS 4-1 was of 1.91 m 2 /g, 3.06 m 2 /g and 13.39 m 2 /g, respectively. BiOCl-Cu 2 ZnSnS 4-1 had a higher photodegradation rate for Congo red dye than BiOCl and Cu 2 ZnSnS 4 QDs under sunlight, and that higher photoactivity was due to the heterostructure effect between BiOCl and Cu 2 ZnSnS 4 QDs along with increased optical absorption in the visible region. Scavenger study endorses the involvement of superoxide and holes radicals in the degradation of Congo red.

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BiOCl-Ag8SnS6 heterostructure: Facile preparation and photocatalytic applications

Cited by 16 publications

References 29 publications

Synthesis and photocatalytic properties of sunlight‐responsive BiOBr–CoWO₄ heterostructured nanocomposites

Synthesis and photocatalytic properties of sunlight‐responsive BiOBr–CoWO₄ heterostructured nanocomposites

Polyethylene glycol-doped BiZn₂VO₆as a high-efficiency solar-light-activated photocatalyst with substantial durability toward photodegradation of organic contaminations

Synthesis and characterization of BiOCl–Cu2ZnSnS4 heterostructure with enhanced photocatalytic activity

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BiOCl-Ag8SnS6 heterostructure: Facile preparation and photocatalytic applications

Cited by 16 publications

References 29 publications

Synthesis and photocatalytic properties of sunlight‐responsive BiOBr–CoWO4 heterostructured nanocomposites

Synthesis and photocatalytic properties of sunlight‐responsive BiOBr–CoWO4 heterostructured nanocomposites

Polyethylene glycol-doped BiZn2VO6as a high-efficiency solar-light-activated photocatalyst with substantial durability toward photodegradation of organic contaminations

Synthesis and characterization of BiOCl–Cu2ZnSnS4 heterostructure with enhanced photocatalytic activity

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Synthesis and photocatalytic properties of sunlight‐responsive BiOBr–CoWO₄ heterostructured nanocomposites

Synthesis and photocatalytic properties of sunlight‐responsive BiOBr–CoWO₄ heterostructured nanocomposites

Polyethylene glycol-doped BiZn₂VO₆as a high-efficiency solar-light-activated photocatalyst with substantial durability toward photodegradation of organic contaminations