Multifunctional environmental applications of ZnO nanostructures synthesized by the microwave-assisted hydrothermal technique

Ortega, P.P.; Silva, C.C.; Ramírez, M. A.; Biasotto, Glenda; Foschini, C. R.; Simões, Alexandre Zirpoli

doi:10.1016/j.apsusc.2020.148723

Cited by 33 publications

(11 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…89-1397. The indexed results showed that these peaks correspond to the (100), (002), (101), (102), (110), (103), (112) and (201) crystal planes of hexagonal-wurtzite structure ZnO, respectively [ 51 ]. In addition, the diffraction peaks appearing at 2θ = 21.89°, 35.9° were indexed according to “Bragg’s X-ray diffraction” law and matched with the standard diffraction data PDF data card sheet No.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of magnetic ZnO/ZnFe2O4/diatomite composites: improved photocatalytic efficiency under visible light irradiation

Limei

Liang

Wang

2022

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

The magnetic recoverable ZnO/ZnFe 2 O 4 /diatomite (ZZFDT) composite was synthesized by hydrothermal-precipitation method. The structure, optical properties and magnetic properties of the composites were characterized by different analytical instruments. ZZFDT-1 is composed of cubic spinel, hexagonal wurtzite, tetrahedron structure. SEM and TEM showed that ZnO and ZnFe 2 O 4 particles were loaded onto the surface of diatomite, and the particle size was uniform. In addition, ZZFDT-1 is a typical mesoporous material with a specific surface area of 65.3 m 2 /g and pore size of about 12 nm. The response range of ZZFDT-1 is extended to visible light, and the band gap is 1.5 eV. Moreover, the M–H hysteretic curves of ZZFDT-1 exhibited superparamagnetic properties. The photocatalytic activity of different samples was evaluated by the conversion rate of oxytetracycline (OTC) under visible light. ZZFDT-1 has the best photocatalytic activity and the conversion is up to 95%. Because of its magnetic nature, it can be easily separated from the solution. The results showed that the ZZFDT composite has good photocatalytic activity under visible light. After being reused six times, it still has good stability.

show abstract

Section: Resultsmentioning

confidence: 99%

Fabrication of magnetic ZnO/ZnFe2O4/diatomite composites: improved photocatalytic efficiency under visible light irradiation

Limei

Liang

Wang

2022

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

show abstract

“…In sensor construction, the thickness of the coating layer and chemical contents with respect to the loading ceria were examined using various microscopic and spectroscopic approaches including scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) [29,30]. Recently, various methods have been reported for the synthesis of ZnONPs and MgONPs including thermal hydrolysis [31,32], microwave-assisted [33,34], and sol-gel seeding [35,36], and electrochemical deposition [37,38].…”

Section: Introductionmentioning

confidence: 99%

Atropine-Phosphotungestate Polymeric-Based Metal Oxide Nanoparticles for Potentiometric Detection in Pharmaceutical Dosage Forms

et al. 2022

View full text Add to dashboard Cite

The new research presents highly conductive polymeric membranes with a large surface area to volume ratio of metal oxide nanoparticles that were used to determine atropine sulfate (AT) in commercial dosage forms. In sensing and biosensing applications, the nanomaterials zinc oxide (ZnONPs) and magnesium oxide (MgONPs) were employed as boosting potential electroactive materials. The electroactive atropine phosphotungstate (AT-PT) was created by combining atropine sulfate and phosphotungstic acid (PTA) and mixing it with polymeric polyvinyl chloride (PVC) with the plasticizer o-nitrophenyl octyl ether (o-NPOE). The modified sensors AT-PT-ZnONPs or AT-PT-MgONPs showed excellent selectivity and sensitivity for the measurements of atropine with a linear concentration range of 6.0 × 10−8 − 1.0 × 10−3 and 8.0 × 10−8 − 1.0 × 10−3 mol L−1 with regression equations of E(mV) = (56 ± 0.5) log [AT] − 294 and E(mV) = (54 ± 0.5) log [AT] − 422 for AT-PT-NPs or AT-PT-MgONPs sensors, respectively. The AT-PT coated wire sensor, on the other hand, showed a Nernstian response at 4.0 × 10−6 − 1.0 × 10−3 mol L−1 and a regression equation E(mV) = (52.1 ± 0.2) log [AT] + 198. The methodology-recommended guidelines were used to validate the suggested modified potentiometric systems against various criteria.

show abstract

“…Zinc oxide (ZnO) is a n-type semiconducting material with a wide direct energy band gap with a value of 3.37 eV at room temperature [5]. Values of 3.96 9 10 20 cm -3 and 17.7 cm 2 V -1 s -1 have been reported for electron concentration and mobility of co-doped RF sputtered ZnO films.…”

Section: Introductionmentioning

confidence: 99%

Flexible zinc oxide photoelectrode for photo electrochemical energy conversion

Shiyani

Banerjee

Mahapatra

et al. 2021

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Photoelectrochemical properties have been investigated for flexible photoelectrodes containing 310 nm thick ZnO film on spin-coated ITO/PET. The high crystalline structure of ZnO was studied using x-ray diffraction pattern. A value of 3.4 eV has been estimated for optical band gap from its absorption spectra. The flexible ZnO photoelectrode was demonstrated to generate photoelectrochemical current. The photocurrents are enhanced by 4% whereas flat-band potential is shifted by 8 V due to the illumination. Values of 1.022 and 0.714 AW−1 were found to be for photo switching and photoresponsivity, respectively. ZnO/ITO/PET can be used as a substrate for making flexible hybrid PEC devices to generate solar power and solar fuels.

show abstract

Multifunctional environmental applications of ZnO nanostructures synthesized by the microwave-assisted hydrothermal technique

Cited by 33 publications

References 41 publications

Fabrication of magnetic ZnO/ZnFe2O4/diatomite composites: improved photocatalytic efficiency under visible light irradiation

Fabrication of magnetic ZnO/ZnFe2O4/diatomite composites: improved photocatalytic efficiency under visible light irradiation

Atropine-Phosphotungestate Polymeric-Based Metal Oxide Nanoparticles for Potentiometric Detection in Pharmaceutical Dosage Forms

Flexible zinc oxide photoelectrode for photo electrochemical energy conversion

Contact Info

Product

Resources

About