scholarly journals Influence of Poly(vinylpyrrolidone) concentration on properties of silver nanoparticles manufactured by modified thermal treatment method

PLoS ONE ◽  
2017 ◽  
Vol 12 (10) ◽  
pp. e0186094 ◽  
Author(s):  
Leila Gharibshahi ◽  
Elias Saion ◽  
Elham Gharibshahi ◽  
Abdul Halim Shaari ◽  
Khamirul Amin Matori
Keyword(s):  
Silver Nanoparticles ◽  
Thermal Treatment ◽  
Treatment Method

scholarly journals Mechanisms of thermal treatment on two dominant copepod species in O3/BAC processing of drinking water

Ecotoxicology ◽  
2021 ◽  
Author(s):  
Wei Jiang ◽  
Sheng Dong ◽  
Fangfang Xu ◽  
Jing Chen ◽  
Chen Gong ◽  
...  
Keyword(s):  
Drinking Water ◽  
Thermal Treatment ◽  
Southern China ◽  
Paraffin Section ◽  
Treatment Method ◽  
Severe Damage ◽  
Internal Organs ◽  
Biological Activated Carbon ◽  
Processing Plants ◽  
Hatching Rates

AbstractPhyllodiaptomus tunguidus and Heliodiaptomus falxus are dominant copepods species in drinking water processing plants in southern China. With a potential penetration risk, the breeding and leakage of copepods are drawing more and more attention in recent years. The current study provided a thermal treatment method to control copepods and their eggs. Results showed that: (1) the immediate death rates of P. tunguidus and H. falxus after heated to 34–40 °C for 5 min are positively correlated to the treatment temperatures (P < 0.01), and all individuals of the both species were eliminated after heated at 40 °C for 5 min; (2) overall hatching rates of P. tunguidus eggs were negatively correlated with treatment temperatures (P < 0.01) between 39–45 °C, with zero percent hatched after treatment at 45 °C for 5 min; (3) hatching rates of H. falxus were negatively correlated with treatment temperatures (P < 0.01) between 37–41 °C, with no nauplii hatched when treated at 41 °C for 5 min; (4) paraffin section histological examination indicated that thermal treatment caused severe damage to internal organs and egg structure. Finally, based on the experimental data, the application of the thermal treatment method was discussed in ozonation combined with biological activated carbon (O3/BAC) processing of drink water treatment.

scholarly journals Influence of Calcination Temperature on Crystal Growth and Optical Characteristics of Eu3+ Doped ZnO/Zn2SiO4 Composites Fabricated via Simple Thermal Treatment Method

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 115
Author(s):  
Suhail Huzaifa Jaafar ◽  
Mohd Hafiz Mohd Zaid ◽  
Khamirul Amin Matori ◽  
Sidek Hj. Ab Aziz ◽  
Halimah Mohamed Kamari ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Band Gap ◽  
Calcination Temperature ◽  
Emission Intensity ◽  
Emission Spectra ◽  
Treatment Method ◽  
Absorption Bands ◽  
Vis Spectroscopy ◽  
Doped Zno ◽  
Zno Crystal

This research paper proposes the usage of a simple thermal treatment method to synthesis the pure and Eu3+ doped ZnO/Zn2SiO4 based composites which undergo calcination process at different temperatures. The effect of calcination temperatures on the structural, morphological, and optical properties of ZnO/Zn2SiO4 based composites have been studied. The XRD analysis shows the existence of two major phases which are ZnO and Zn2SiO4 crystals and supported by the finding in the FT-IR. The FESEM micrograph further confirms the existence of both ZnO and Zn2SiO4 crystal phases, with progress in the calcination temperature around 700–800 °C which affects the existence of the necking-like shape particle. Absorption humps discovered through UV-Vis spectroscopy revealed that at the higher calcination temperature effects for higher absorption intensity while absorption bands can be seen at below 400 nm with dropping of absorption bands at 370–375 nm. Two types of band gap can be seen from the energy band gap analysis which occurs from ZnO crystal and Zn2SiO4 crystal progress. It is also discovered that for Eu3+ doped ZnO/Zn2SiO4 composites, the Zn2SiO4 crystal (5.11–4.71 eV) has a higher band gap compared to the ZnO crystal (3.271–4.07 eV). While, for the photoluminescence study, excited at 400 nm, the emission spectra of Eu3+ doped ZnO/Zn2SiO4 revealed higher emission intensity compared to pure ZnO/Zn2SiO4 with higher calcination temperature exhibit higher emission intensity at 615 nm with 700 °C being the optimum temperature. The emission spectra also show that the calcination temperature contributed to enhancing the emission intensity.

scholarly journals A Modified Thermal Treatment Method for the Up-Scalable Synthesis of Size-Controlled Nanocrystalline Titania

2016 ◽  
Vol 6 (10) ◽  
pp. 295 ◽  
Author(s):  
Aysar Keiteb ◽  
Elias Saion ◽  
Azmi Zakaria ◽  
Nayereh Soltani ◽  
Nura Abdullahi
Keyword(s):  
Thermal Treatment ◽  
Treatment Method ◽  
Nanocrystalline Titania ◽  
Scalable Synthesis ◽  
Size Controlled

scholarly journals Nanomaterials Based Drinking Water Purification: Comparative Study with a Conventional Water Purification Process

2018 ◽  
Vol 63 (1) ◽  
pp. 96-112 ◽  
Author(s):  
Barış Şimşek ◽  
İnci Sevgili ◽  
Özge Bildi Ceran ◽  
Haluk Korucu ◽  
Osman Nuri Şara
Keyword(s):  
Silver Nanoparticles ◽  
Drinking Water ◽  
Graphene Oxide ◽  
Water Treatment ◽  
Water Purification ◽  
Drinking Water Treatment ◽  
Treatment Method ◽  
Salmonella Typhi ◽  
Liquid Ratio ◽  
Solid Liquid

One of the ways of fully securing the presence of fresh water is water treatment process. Nanomaterials and nanotechnology offers an innovative solution for water treatment. In this study, physical, chemical and microbiological improvement rates of raw water were analyzed after filtration with graphene oxide. Graphene oxide's water treatment performance; silver nanoparticles, silver nanoparticles & graphene oxide composites that are commonly used in water treatment were compared with a traditional treatment method. When compared to the traditional method, there were improvements of 50 %, 40.7 %, 86.8 % and 45.5 % for color, TIC, TOC and hardness properties, respectively in water treatment by GO-based filtration with solid liquid ratio of 0.7 % (v/v). In water treatment with GO-Ag based filtration, 39.8 %, 69.8 %, 10.3 % and 28.6 % of improvements were obtained for TIC, TOC, hardness and LSI value compared to the conventional method. Both GO at 0.7 % (v/v) solid-liquid ratio and GO-Ag nanocomposites were successful in the number of total viable microorganisms and inhibiting microorganisms such as Escherichia coli fecal (gaita-infected), Salmonella typhi, Enterococcus faecalis, Pseudomona aeruginosa and Staphylococcus aureus. Among the studied parameters GO-Ag nanocomposites found to be the most suitable for drinking water treatment.

Structural, optical and magnetic tunability in KBiFe2O5 multiferroics

RSC Advances ◽  
2015 ◽  
Vol 5 (100) ◽  
pp. 82351-82356 ◽  
Author(s):  
X. Z. Zhai ◽  
H. M. Deng ◽  
W. L. Zhou ◽  
P. X. Yang ◽  
J. H. Chu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Thermal Treatment ◽  
Perovskite Solar Cells ◽  
Treatment Method ◽  
One Step

KBiFe2O5, a highly promising multiferroic for perovskite solar cells, has been fabricated using a one-step thermal treatment method.

scholarly journals Graphitic carbon nitride with thermally-induced nitrogen defects: an efficient process to enhance photocatalytic H2 production performance

RSC Advances ◽  
2020 ◽  
Vol 10 (32) ◽  
pp. 18632-18638 ◽  
Author(s):  
Guangzhi Dong ◽  
Yun Wen ◽  
Huiqing Fan ◽  
Chao Wang ◽  
Zhenxiang Cheng ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Carbon Nitride ◽  
Treatment Method ◽  
H2 Production ◽  
Graphitic Carbon ◽  
Production Performance ◽  
Graphitic Carbon Nitride ◽  
Thermally Induced ◽  
Efficient Process

An efficient thermal-treatment method was developed for the preparation of defect modified g-C3N4 with excellent photocatalytic H2 production performance.

scholarly journals Structural and Superconducting Properties of Thermal Treatment-Synthesised Bulk YBa2Cu3O7−δ Superconductor: Effect of Addition of SnO2 Nanoparticles

Materials ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 92 ◽  
Author(s):  
Nur Mohd Yusuf ◽  
Mohd Awang Kechik ◽  
Hussein Baqiah ◽  
Chen Soo Kien ◽  
Lim Kean Pah ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Ac Susceptibility ◽  
Sno2 Nanoparticles ◽  
Treatment Method ◽  
Composition Analysis ◽  
Superconducting Transition ◽  
Superconducting Properties ◽  
Bulk Superconductors ◽  
Diamagnetic Transition ◽  
Critical Temperature Tc

YBa2Cu3O7−δ (Y-123) bulk superconductors with the addition of (0.0, 0.2, 0.4, 0.6, 0.8, and 1.0 wt.%) SnO2 nanoparticles were synthesised via a thermal treatment method. The influence of SnO2 addition on the superconducting properties by means of critical temperature, Tc, AC susceptibility, phase formation and microstructures, including its elemental composition analysis, were studied. Sharp superconducting transition, ∆Tc, and diamagnetic transition were obtained for all SnO2-added samples. It was observed that sample x = 0.4 with a Y-123 phase percentage of 95.8% gives the highest Tc, smallest ∆Tc, and the sharpest diamagnetic transition in the normalised susceptibility curves. The microstructure also showed an excess of Sn precipitates on the sample’s surface at x = 0.8 and above. As such, the best superconducting properties were observed at x = 0.4 SnO2 addition inside the Y-123 host sample.

Synthesis, Structural and Morphological Properties of Cadmium Oxide Nanoparticles Prepared by Thermal Treatment Method

2015 ◽  
Vol 1107 ◽  
pp. 291-294 ◽  
Author(s):  
Naif Mohammed Al-Hada ◽  
Elias B. Saion ◽  
Abdul H. Shaari ◽  
Mazliana A. Kamarudeen ◽  
Moayad Husein Flaifel ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Low Cost ◽  
Cadmium Oxide ◽  
Treatment Method ◽  
Metal Nitrate ◽  
Morphological Properties ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Transmission Electron ◽  
Cdo Nanoparticles

Cadmium oxide (CdO) nanoparticles was synthesized from an aqueous solution containing metal nitrate as a precursor and polyvinyl pyrrolidone (PVP) as a capping agent by simple thermal-treatment method. The as-synthesized sample has been calcined at various temperatures from 500 to 650 °C to remove the organic matters. The structure and morphology of the calcined oxide nanoparticles have been examined by X-ray diffraction (XRD) and transmission electron microscopy (TEM), respectively. The results obtained supports the fact that the thermal treatment method utilized for the synthesis of CdO nanoparticles is certainly a very simple and low cost technique that requires no additional chemicals.

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