Eco-Friendly Synthesis of Silver Nanoparticles Using Carica Papaya Extract for Anti Bacterial Applications

2012 ◽  
Vol 629 ◽  
pp. 279-283 ◽  
Author(s):  
Rameshwar Rao ◽  
C. Shilpa Chakra ◽  
K. Venkateswara Rao
Keyword(s):  
Carica Papaya ◽  
Research Work ◽  
Synthesis Method ◽  
Cost Effective ◽  
Nano Particles ◽  
Environment Friendly ◽  
Wet Chemical Synthesis ◽  
Agno3 Solution ◽  
Wet Chemical ◽  
Synthesis Of Nanomaterials

Nanobiotechnology emerged as integration of nanotechnology and biotechnology for developing bioactive, biosynthetic and eco -friendly technology for synthesis of nanomaterials. Nanostructures have great demand in areas such as chemistry, catalysis, electronics, energy, and medical applications. Metallic nano-particles are normally synthesized by wet chemical synthesis techniques using the toxic and inflammable chemicals. Present research work on preparation of silver nano-particles by green nano synthesis method and has advantages over conventional methods involving chemical agents which can cause environmental toxicity. The synthesis technique is a cost effective and environment friendly technique for green nano synthesis of silver nano-particles from varying concentrations of AgNO3 solution and extract of Carica papaya fruit of different concentrations which acts as reducing and capping agent. Characterizations has been done using UV–Vis absorption spectroscopy, XRD, particle size analyser and SEM with EDX. Antimicrobial activity was done using Escherichia coli and Pseudomonas.

Facile synthesis of pseudo-peanut shaped hematite iron oxide nano-particles and their promising ethanol and formaldehyde sensing characteristics

RSC Advances ◽  
2014 ◽  
Vol 4 (60) ◽  
pp. 31879-31886 ◽  
Author(s):  
P. Das ◽  
B. Mondal ◽  
K. Mukherjee
Keyword(s):  
Iron Oxide ◽  
Chemical Synthesis ◽  
Cost Effective ◽  
Nano Particles ◽  
Facile Synthesis ◽  
Wet Chemical Synthesis ◽  
Formaldehyde Sensing ◽  
Wet Chemical ◽  
Chemical Synthesis Route ◽  
Sensing Characteristics

Herein, pseudo-peanut shaped hematite iron oxide nano-particles are prepared through a facile cost effective wet chemical synthesis route.

Proposed Industrial Scale Setup for Production of ZnO Nanoparticles Using Wet Chemical Synthesis Method

2021 ◽  
Vol 875 ◽  
pp. 146-152
Author(s):  
Muhammad Saquib Ali ◽  
Muhammad Yasir Khan ◽  
Zeeshan Akhtar ◽  
Wasim Akhtar ◽  
Ahsan Muhammad ◽  
...  
Keyword(s):  
Zno Nanoparticles ◽  
Research Work ◽  
Maximum Yield ◽  
Synthesis Method ◽  
Chemical Precipitation ◽  
Flow Diagram ◽  
Precipitation Reaction ◽  
Wet Chemical Synthesis ◽  
Wet Chemical ◽  
Zno Powder

In this study, an industrial method is provided for the synthesis of zinc oxide (ZnO) nanoparticles by a simple and economical wet chemical precipitation reaction between Zinc Chloride (ZnCl2) and Sodium Hydroxide (NaOH) at low temperatures less than 80 °C. In first step, Small quantity of ZnO powder is produced in laboratory scale. As-synthesized lab-scale ZnO powders were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Orthogonal experiments were performed to find out the optimal conditions for the maximum yield of ZnO powder. In second step, the process flow diagram (PFD), material & energy balance and design of reactor were done on the basis of lab-scale data. Overall, this research work proposes that ZnO powder can be manufactured easy and economical method which can be used for various branches of industry: rubber, pharmaceutical, cosmetics, textile, electronic etc.

scholarly journals Canted antiferromagnetism in high-purity NaFeF3 prepared by a novel wet-chemical synthesis method

2020 ◽  
Vol 4 (11) ◽  
Author(s):  
Fabian L. M. Bernal ◽  
Bruno Gonano ◽  
Fredrik Lundvall ◽  
David S. Wragg ◽  
Helmer Fjellvåg ◽  
...  
Keyword(s):  
Chemical Synthesis ◽  
High Purity ◽  
Synthesis Method ◽  
Wet Chemical Synthesis ◽  
Wet Chemical

scholarly journals Formulation of cellulose using groundnut husk as an environment-friendly fluid loss retarder additive and rheological modifier comparable to PAC for WBM

2020 ◽  
Vol 10 (8) ◽  
pp. 3449-3466
Author(s):  
Atul Kumar Patidar ◽  
Anjali Sharma ◽  
Dev Joshi
Keyword(s):  
Drilling Fluid ◽  
Ecological Impact ◽  
Research Work ◽  
Cost Effective ◽  
Hydrocarbon Exploration ◽  
Fluid Loss ◽  
Drilling Fluids ◽  
Environment Friendly ◽  
Fluid Loss Additive ◽  
Rheological Modifier

Abstract The hydrocarbon extraction and exploitation using state-of-the-art modern drilling technologies urge the use of biodegradable, environment-friendly drilling fluid and drilling fluid additives to protect the environment and humanity. As more environmental laws are enacted and new safety rules implemented to oust the usage of toxic chemicals as fluid additives, it becomes inevitable that we re-evaluate our choice of drilling fluid additives. Drilling fluids and its additives play a crucial role in drilling operations as well as project costing; hence, it is needed that we develop cost-effective environment-friendly drilling fluid additives that meet the requirements for smooth functioning in geologically complex scenarios as well as have a minimal ecological impact. The current research work demonstrates key outcomes of investigations carried out on the formulation of a sustainable drilling fluid system, where groundnut husk is used as a fluid loss additive and a rheological modifier having no toxicity and high biodegradability. Cellulose was generated from groundnut husk at two varying particle sizes using mesh analysis, which was then compared with the commercially available PAC at different concentrations to validate its properties as a comparable fluid loss retarder additive as well as a rheological modifier. In the present work, various controlling characteristics of proposed groundnut husk additive are discussed, where comparison at different concentrations with a commercially available additive, PAC, is also validated. The API filtration losses demonstrated by the (63–74) µm and the (250–297) µm proposed additive showed a decrease of 91.88% and 82.31%, respectively, from the base mud at 4% concentration. The proposed husk additives acted as a filtrate retarder additive without much deviation from base rheology and with considerably higher pH than the base mud. This investigation indicates that the proposed fluid loss additive and rheological modifier can minimize the environmental hazards and have proved to be a cost-effective eco-friendly alternative in this challenging phase of the hydrocarbon exploration industry.

scholarly journals Facile growth of high transmittance ZnO micro-rod clusters on indium tin oxide by a wet-chemical synthesis method

2021 ◽  
Vol 30 ◽  
pp. 263498332110389
Author(s):  
S Morkoç Karadeniz
Keyword(s):  
Chemical Synthesis ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Hexagonal Phase ◽  
Synthesis Method ◽  
Zinc Nitrate ◽  
Synthesis Process ◽  
Nitrate Hexahydrate ◽  
Wet Chemical Synthesis ◽  
Wet Chemical

A simple wet-chemical synthesis method was developed to fabricate Zinc oxide micro-rod clusters. The synthesis process involved the rapid dilution of a zinc-bearing alkaline solution at 150°C in a convection oven on indium tin oxide (ITO) substrates. The synthesis was carried out by immersing an unseeded ITO substrate in a mixture of zinc nitrate hexahydrate (Zn(NO3)2·6H2O) and hexamethylenetetramine ((CH2)6N4) aqueous solution. The obtained sample was annealed at 400°C for 2 h. The structural, morphological and optical properties of the synthesized ZnO microstructures were investigated by X-ray diffraction, scanning electron microscopy and ultraviolet-visible spectroscopy, respectively. The ZnO rod clusters are hexagonal phase of the wurtzite structure. The crystal grain sizes of the films were found to be 72.6, 84.3 and 66.3 nm for the (100), (002) and (101) crystal planes, respectively. The optical bandgap of the ZnO was determined to be 3.147 eV.

Solubility of Mn in ZnO Nanocrystallites using Wet Chemical Synthesis

2019 ◽  
Vol 2 (1) ◽  
pp. 53-61
Author(s):  
Esau Abekah Armah ◽  
Francis Kofi Ampong ◽  
Martin Egblewogbe ◽  
Hubert Azoda Koffi ◽  
Francis Boakye ◽  
...  
Keyword(s):  
Synthesis Method ◽  
Magnetic Semiconductor ◽  
Solubility Limit ◽  
Secondary Phases ◽  
X Ray Diffraction ◽  
Phase Synthesis ◽  
Wet Chemical Synthesis ◽  
Wet Chemical ◽  
Binary Compounds

There is a substantial amount of literature dealing with many aspects of synthesis and characterization of pure and doped binary compounds including Mn-doped ZnO which has been widely studied due to its superb properties as a dilute magnetic semiconductor (DMS). Aspects concerning doping limits for these compounds is an important stage in the search for new materials. Samples of Zn1-xMnxO nanocrystal were synthesized at temperatures of 180 °C and 200 °C using wet or liquid phase synthesis method. Dopant concentrations x=0.5, 1, 1.5, 2, 2.5, 5, 10, 20, 30, 40 and 50 per cent were studied. Powder x-ray diffraction (PXRD) patterns of the samples were analyzed with a view to determining the onset of secondary phases and hence the solubility limit of the dopant. The solubility limit for Mn in ZnO samples synthesized at temperature of 200 °C is realized at x <20%. For samples synthesized at temperature of 180 °C, the solubility limit is x <0.5%.

Low Temperature Wet-Chemical Synthesis BaTiO3 Nano-Particles by Tetra-N-Butyl Titanate [Ti-(O-C4H9)4]

2011 ◽  
Vol 694 ◽  
pp. 108-112
Author(s):  
Min Zeng ◽  
Yong Jun Ma ◽  
Sheng Wei Chen ◽  
Chong Hua Pei
Keyword(s):  
Fine Particles ◽  
Heating Temperature ◽  
Nano Particles ◽  
Molar Ratio ◽  
Cubic Phase ◽  
Wet Chemical Synthesis ◽  
Secondary Particles ◽  
Wet Chemical ◽  
Hydrolysis Of ◽  
Lower Heating

Barium titanate nano-particles were prepared by heating the mixture of barium hydroxide aqueous solution and titania derived from the hydrolysis of Tetra-n-butyl Titanate [Ti-(O-C4H9)4]. The well-crystallized cubic phase BaTiO3 fine particles were obtained by heating at more than 328 K for 24 h. The morphology and size of the obtained nano-particles depended on the heating temperature and the reaction molar ratio Ba/Ti. In addition, the secondary particles with the larger size were obtained at a lower heating temperature. It is considered that the nucleation process of BaTiO3 depended on the heating temperature and the reaction concentration.

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