Synthesis and characterization of Sb2S3-CeO2/chitosan-starch as a heterojunction catalyst for photo-degradation of toxic herbicide compound: Optical, photo-reusable, antibacterial and antifungal performances

Hosseini, Mojgan; Pourabadeh, Amirasad; Fakhri, Ali; Hallajzadeh, Jamal; Tahami, Shiva

doi:10.1016/j.ijbiomac.2018.07.065

Cited by 29 publications

(5 citation statements)

References 30 publications

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“…They reduced to 3.0 and 3.4 after doping with NTO, and significantly shrink to 2.0 and 2.5 eV, respectively, after loading EC. Hosseini et al [21] reported a dE g value of 2.23 eV for Sb 2 S 3 -CeO 2 /chitosan-starch nanocomposites. These additives allow the formation of defects, and charge transfer complexes, as well as, create localized states in the region between the conduction band & valence band of the blend, leading to the observed narrowing in E g .…”

Section: Optical Propertiesmentioning

confidence: 99%

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Synthesis, optical, and electrical properties of starch/chitosan/NaTiO₃ bio-nanocomposites modified with ErCl₃

Sayed¹,

El‐Gamal²

2022

Phys. Scr.

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Solid polymer electrolytes (SPEs) based on nanocomposites are attracting increasing attention due to their technological and industrial applications. In the present work, a facile aqueous casting method was utilized for the preparation of a starch-chitosan blend loaded with nanosized NaTiO3 (NTO) and co-mixed with ErCl3 (EC) salt. The interactions between OH group of starch and N–H group of chitosan with NTO and EC, and the films' crystallinity and surface morphology were studied by FTIR, XRD, and SEM. UV-Vis-NIR measurements showed the indirect (direct) optical band gaps decreased from 3.4 to 2.0 eV (4.5 to ~ 2.5 eV), i.e., ~ 41–44 % shrinking. At the time that the films maintained a reasonable transmittance. The optical constants of the films; extinction coefficient, refractive index, and the carrier’s concentration to the electron effective mass (N/m*) are reported. N/m* of the pure blend was 4.85 x 1039 (kg-1 m-3) increased to 1.64 times and 2.8 times after loading with 1.0% NTO and 20% EC, respectively. Various dielectric parameters (dielectric constant ε', dielectric loss ε'', ac conductivity σac, and dielectric moduli M' & M'') were evaluated in the frequency range 5 Hz - 1 MHz and temperatures of 298 - 353 K. The conductivity (σac) of the blend increased from 1.10×10-3 S/cm to 8.17×10-3 S/cm after modifying with 20% EC, i.e., became 8 times greater. Moreover, the influence of NTO and EC on the conduction mechanism and Cole-Cole plots are discussed. The improvements in the optical and electrical properties of EC/NTO/blend illustrate the possibility of extending the applications of these smart materials to include optoelectronic devices, batteries, and supercapacitors.

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Section: Optical Propertiesmentioning

confidence: 99%

“…Vaezi et al [20] reported that 3.0 and 0.7 wt.% of clay and nano-sized ZnO were effective to acquire a well-moderated tensile strength good barrier and optical properties for starch. Sb 2 S 3 -CeO 2 /starch/chitosan composite showed high photocatalytic activity and an antimicrobial efficiency for wastewater purification [21].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, optical, and electrical properties of starch/chitosan/NaTiO₃ bio-nanocomposites modified with ErCl₃

Sayed¹,

El‐Gamal²

2022

Phys. Scr.

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“…According to the phase diagram, the Sb 2 S 3 stibnite is the only condensed stable binary phase in the Sb-S binary system [ 11 , 12 ]. This compound has been largely investigated for photovoltaic [ 13 , 14 , 15 , 16 , 17 , 18 , 19 ] and photocatalysis [ 20 , 21 , 22 , 23 , 24 ] applications, its thermoelectric properties being much less studied [ 25 , 26 ]. A metastibnite mineral, which has the approximate composition of Sb 2 S 3 and contains metals in small amounts, has, however, been reported in the literature [ 27 , 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric Properties of Sb-S System Compounds from DFT Calculations

2020

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By combining density functional theory, quantum theory of atoms in molecules and transport properties calculations, we evaluated the thermoelectric properties of Sb-S system compounds and shed light on their relationships with electronic structures. The results show that, for Sb2S3, the large density of states (DOS) variation induces a large Seebeck coefficient. Taking into account the long-range weak bonds distribution, Sb2S3 should exhibit low lattice thermal conductivity. Therefore, Sb2S3 is promising for thermoelectric applications. The insertion of Be atoms into the Sb2S3 interstitial sites demonstrates the electrical properties and Seebeck coefficient anisotropy and sheds light on the understanding of the role of quasi-one-dimensional structure in the electron transport. The large interstitial sites existing in SbS2 are at the origin of phonons anharmonicity which counteracts the thermal transport. The introduction of Zn and Ga atoms into these interstitial sites could result in an enhancement of all the thermoelectric properties.

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“…Therefore, the new method was designed for the treatment of water. The photocatalytic degradation of pharmaceutical is the novel method for solving the concern about water contaminations . Metal oxides such as ZnO, and TiO 2 having different properties for photo‐degradation reaction like as light absorption, charge separation/transformation which that are able to decompose organic compound .…”

Section: Introductionmentioning

confidence: 99%

“…The cadmium titanate nanomaterials have various properties in wide application, such as photo‐degradation of many organic compounds . Manganese dioxide has fourteen polymorphs and is great nano‐material due to tunnel structures with the cations and can act as host lattices. The photo‐degradation of CdTiO 3 can be improved with combine with MoO 3 or MnO 2 with a decrease in band gap value and makes the excellent degradation‐process …”

Section: Introductionmentioning

confidence: 99%

Synthesis of MnO₂/CdTiO₃ nano‐structure for high performance photocatalysis and antimicrobial application

Gao

Mahmoudi

Fakhri

et al. 2019

Applied Organom Chemis

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A MnO 2 /CdTiO 3 is prepared by a simple chemical method. The organic compound such as antibiotics is a contaminant found in large amounts in pharmaceutical industrial wastewater. Pharmaceutical compounds are toxic.The nano-product was characterized by SEM, XRD, XPS, DLS and UV-vis DRS revealed that the MnO 2 nanoparticles were supported on the CdTiO 3 surface. The crystallite size was found as 72.11 nm, and 38.13 nm for CdTiO 3 , and MnCdTi-1 nanocomposites, respectively. The prepared catalyst was used for photo-degradation of cephalexin under UV light irradiation. The result implies the complete degradation of cephalexin was carried out at 80 min for MnCdTi-2 nanocomposites (88.88%) due to this catalyst has the lowest band gap compared to the other catalyst. The MnO 2 /CdTiO 3 was selected for fungicidal and bactericidal efficiency against Aspergillus flavus, and candida albicans and Escherichia coli, and Staphylococcus aureus. The MnO 2 /CdTiO 3 -2 has great activity is compared with the other MnO 2 /CdTiO 3 -0 and MnO 2 / CdTiO 3 -1 samples.

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Synthesis and characterization of Sb2S3-CeO2/chitosan-starch as a heterojunction catalyst for photo-degradation of toxic herbicide compound: Optical, photo-reusable, antibacterial and antifungal performances

Cited by 29 publications

References 30 publications

Synthesis, optical, and electrical properties of starch/chitosan/NaTiO₃ bio-nanocomposites modified with ErCl₃

Synthesis, optical, and electrical properties of starch/chitosan/NaTiO₃ bio-nanocomposites modified with ErCl₃

Thermoelectric Properties of Sb-S System Compounds from DFT Calculations

Synthesis of MnO₂/CdTiO₃ nano‐structure for high performance photocatalysis and antimicrobial application

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Synthesis and characterization of Sb2S3-CeO2/chitosan-starch as a heterojunction catalyst for photo-degradation of toxic herbicide compound: Optical, photo-reusable, antibacterial and antifungal performances

Cited by 29 publications

References 30 publications

Synthesis, optical, and electrical properties of starch/chitosan/NaTiO3 bio-nanocomposites modified with ErCl3

Synthesis, optical, and electrical properties of starch/chitosan/NaTiO3 bio-nanocomposites modified with ErCl3

Thermoelectric Properties of Sb-S System Compounds from DFT Calculations

Synthesis of MnO2/CdTiO3 nano‐structure for high performance photocatalysis and antimicrobial application

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Product

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Synthesis, optical, and electrical properties of starch/chitosan/NaTiO₃ bio-nanocomposites modified with ErCl₃

Synthesis, optical, and electrical properties of starch/chitosan/NaTiO₃ bio-nanocomposites modified with ErCl₃

Synthesis of MnO₂/CdTiO₃ nano‐structure for high performance photocatalysis and antimicrobial application