Enhanced photocatalytic degradation of methylene blue by a direct Z-scheme Bi2S3/ZnIn2S4 photocatalyst

Chachvalvutikul, Auttaphon; Pudkon, Watcharapong; Luangwanta, Tawanwit; Thongtem, Titipun; Thongtem, Somchai; Kittiwachana, Sila; Kaowphong, Sulawan

doi:10.1016/j.materresbull.2018.10.034

Cited by 83 publications

(30 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The e − accumulated at CB of CuInS 2 efficiently reduce dissolved O 2 in the solution to · -O 2 radical because the CB potential of the CuInS 2 (−1.19 V) is more negative than the reduction potential of O 2 /· -O 2 (−0.33 V versus NHE). In addition, since the reduction potential of O 2 /H 2 O 2 is 0.695 V (versus NHE), the e − can react with O 2 and H + to produce H 2 O 2 which would then further produce ·OH radicals in the photocatalytic reaction [49][50][51][52]. These explanations correspond with the significant decreases that take place in the kinetic rate of RhB after the addition of K 2 Cr 2 O 7 quencher into the reaction solution.…”

Section: Resultsmentioning

confidence: 96%

See 1 more Smart Citation

Photocatalytic activity of CuInS₂ nanoparticles synthesized via a simple and rapid microwave heating process

Chumha

Pudkon

Chachvalvutikul

et al. 2020

Mater. Res. Express

Self Cite

View full text Add to dashboard Cite

In this research, visible-light photocatalytic activities of CuInS 2 nanoparticles for degradation of three organic dyes (rhodamine B; RhB, methylene blue; MB, and methyl orange; MO) were investigated. The CuInS 2 nanoparticles were synthesized by a simple and rapid microwave heating process using sodium sulfide as a sulfur source and then characterized by x-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET), and UV-vis diffuse reflectance spectroscopy (UV-vis DRS) techniques. The synthesized CuInS 2 nanoparticles exhibited excellent photocatalytic degradation activity to the cationic dyes (RhB and MB) when compared with that of anionic dye (MO). Zeta potential of the CuInS 2 photocatalyst was measured to elucidate the adsorption ability toward dye molecules. A possible photocatalytic degradation mechanism was proposed based on active species quenching experiments and Mott-Schottky analysis.

show abstract

Section: Resultsmentioning

confidence: 96%

“…Therefore, ·OH radicals can be generated by further reduction of · -O 2 radicals, as has been mentioned above. Finally, the · -O 2 and ·OH radicals oxidize the dye molecules to yield the final products such as CO 2 , H 2 O and etc [50]. Simultaneously, the h + in the VB of CuInS 2 can directly degrade the dye molecules.…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic activity of CuInS₂ nanoparticles synthesized via a simple and rapid microwave heating process

Chumha

Pudkon

Chachvalvutikul

et al. 2020

Mater. Res. Express

Self Cite

View full text Add to dashboard Cite

show abstract

“…[26] Different polymorphs of ZIS have different applications. Many studies have revealed that the hexagonal ZIS and the cubic-phase ZIS have excellent photocatalytic activity under visible [27][28][29] and NIR light [30,31] irradiation and exhibit considerable chemical stability. For example, the hexagonal ZIS flower-like microspheres doped with black phosphorus quantum dots (QDs) prepared by Pan et al have excellent photocatalytic hydrogen evolution activity.…”

Section: Crystal Structures Optical Propertiesmentioning

confidence: 99%

“…Chachvalvutikul et al synthesized a direct Z‐scheme Bi 2 S 3 /ZIS photocatalyst by the microwave irradiation method. [ 29 ] It was found that the direct Z‐scheme photocatalyst promoted the effective separation and migration of photogenerated charges, which inhibited the electron–hole recombination, thereby enhancing the photocatalytic degradation of methylene blue. Under the condition of microwave radiation, the solution can be heated uniformly, and the crystal nuclei can grow together, resulting in the formation of the composites with special morphology.…”

Section: Synthetic Strategies Of Zis Photocatalystsmentioning

confidence: 99%

A Review and Recent Developments in Full‐Spectrum Photocatalysis using ZnIn₂S₄‐Based Photocatalysts

et al. 2021

View full text Add to dashboard Cite

Nowadays, photocatalytic technology is considered as one of the most efficient methods to solve the problem of the global energy shortage and the pollution of the environment. Among these outstanding photocatalysts, metal sulfide‐based semiconductors have attracted wide attention because of their good chemical stability, simple synthesis method, and relatively narrow bandgaps. ZnIn2S4 (ZIS), as a layered structure ternary metal chalcogenide and a rising material star, has made exciting breakthroughs in the past decades. Recently, studies have shown that a rich variety of ZIS composite nanostructures are developed. This review summarizes the recent advances and development in the design and improvement of ZIS and ZIS‐based photocatalysts in full‐spectrum photocatalytic applications. Furthermore, the applications of ZIS‐based photocatalysts are discussed, such as in photocatalytic hydrogen production, CO2 reduction, degradation of pollutants, and photocatalytic selective organic transformations under ultraviolett (UV), visible (Vis), and near‐infrared (NIR) light irradiation. In the end, a brief summary and perspectives on the challenges and future directions in the area of ZIS and ZIS‐based photocatalysts are also provided.

show abstract

“…In the general framework of the development of photocatalytic or photoluminescent materials susceptible to be integrated in depollution devices, radiation sensor, or light‐emitting diodes, various tungstates and molybdates A 2+ (XO 4 ) 2− or (B 3+ ) 2 (XO 6 ) 6− ( X = W 6+ , Mo 6+ ) were investigated for the potential photoluminescent and/or photocatalytic properties (Cates, Chinnapongse, Kim, & Kim, 2012; Chachvalvutikul et al, 2019; Ishow et al, 2008; Karthikeyani & Jagannathan, 2000; Kwak, Park, & Shon, 2004; Lv et al, 2018; O’Connor, 1966; Wang et al, 2011; Zhang et al, 2019). In the case of solid solutions (Bakiz et al, 2018; Hallaoui et al, 2016; Taoufyq et al, 2015), the chemical substitution allowed modifying the energies and intensities of photoluminescence emissions, acting as structural defects, mainly oxygen vacancies.Other authors have shown the role of charge separation or the polarization on photocatalytic activity and photoluminescence emissions (Chen, Huang, Guo, Zhang, & Ma, 2019; Chen et al, 2018; Hao et al, 2019; Huang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Role of thermal decomposition process in the photocatalytic or photoluminescence properties of BiPO₄ polymorphs

Bouddouch

Amaterz

Bakiz

et al. 2020

Water Environment Research

View full text Add to dashboard Cite

Thermal decomposition process was used to obtain modified photocatalytic and/or photoluminescence properties of bismuth phosphate polymorphs. The precursor BiPO4, 0.7H2O was synthesized by a coprecipitation route. The observed polymorphs were the hexagonal P3121 hydrate phase BiPO4, 0.7H2O at 25°C, a mix system of hexagonal and monoclinic P21/n phases at 200°C and 400°C, a mix system of monoclinic phases P21/n and P21/m at 600°C, and a unique monoclinic phase P21/m at 900°C. The X‐ray diffraction analyses allowed evidencing lattice deformations due to structural defects. The photocatalytic activities in the presence of rhodamine B in aqueous solution were determined using UV light irradiation. The best photocatalytic efficiencies were observed with the mix systems resulting from thermal decomposition at 400 and 600°C. Photoluminescence experiments performed under UV‐laser light irradiation revealed unexpected emissions in the green‐orange range, with optimal intensities for the mix systems observed at 400°C. The role of structural defects resulting from decomposition process is discussed. Practitioner points Thermal decomposition is used to introduce structural defects in BiPO4 polymorphs The BiPO4 intermediate systems are used to photodegrade rhodamine B Active species trapping experiments are performed Photoluminescence experiments highlight green‐orange emissions Structural defects are at the origin of this photoluminescence

show abstract

Enhanced photocatalytic degradation of methylene blue by a direct Z-scheme Bi2S3/ZnIn2S4 photocatalyst

Cited by 83 publications

References 45 publications

Photocatalytic activity of CuInS₂ nanoparticles synthesized via a simple and rapid microwave heating process

Photocatalytic activity of CuInS₂ nanoparticles synthesized via a simple and rapid microwave heating process

A Review and Recent Developments in Full‐Spectrum Photocatalysis using ZnIn₂S₄‐Based Photocatalysts

Role of thermal decomposition process in the photocatalytic or photoluminescence properties of BiPO₄ polymorphs

Contact Info

Product

Resources

About

Enhanced photocatalytic degradation of methylene blue by a direct Z-scheme Bi2S3/ZnIn2S4 photocatalyst

Cited by 83 publications

References 45 publications

Photocatalytic activity of CuInS2 nanoparticles synthesized via a simple and rapid microwave heating process

Photocatalytic activity of CuInS2 nanoparticles synthesized via a simple and rapid microwave heating process

A Review and Recent Developments in Full‐Spectrum Photocatalysis using ZnIn2S4‐Based Photocatalysts

Role of thermal decomposition process in the photocatalytic or photoluminescence properties of BiPO4 polymorphs

Contact Info

Product

Resources

About

Photocatalytic activity of CuInS₂ nanoparticles synthesized via a simple and rapid microwave heating process

Photocatalytic activity of CuInS₂ nanoparticles synthesized via a simple and rapid microwave heating process

A Review and Recent Developments in Full‐Spectrum Photocatalysis using ZnIn₂S₄‐Based Photocatalysts

Role of thermal decomposition process in the photocatalytic or photoluminescence properties of BiPO₄ polymorphs