Study of Time-dependent Interaction of ZnO Nanoparticles with Sucrose and Honey Molecules for Biomedical Applications

2019 ◽  
Vol 4 (3) ◽  
pp. 216-222
Author(s):  
Pijus Kanti Samanta ◽  
Tapanendu Kamilya ◽  
Dhrubajyoti Pahari
Keyword(s):  
Band Gap ◽  
Zno Nanoparticles ◽  
Synthesis Method ◽  
Interaction Mechanism ◽  
Interaction Time ◽  
Binding Time ◽  
Infected Cells ◽  
Uv Visible ◽  
High Band ◽  
Dependent Interaction

Background: Nanoparticles are in the forefront of research due to their unique properties that find possible applications from optoelectronics to medical technology. It is also reported that nanoparticles can interact with the living cells and can selectively destroy the cells. Researchers are thus interested to find a way by which the drugs will be attached to the nanoparticles, go to the target site and destroy the infected cells. Before that, it is very much important to understand the interaction of nanoparticles with the blood, plasma and other biological cells that exists in the blood. It is also very essential to understand how the nanoparticles interact with the absorbed sucrose in the cell. Objective: Our objective in this research is to investigate the interaction of ZnO nanoparticles with sucrose and honey sugar to understand the basic interaction mechanism. It will also enable us to find a way of stabilizing body sucrose and glucose level. Methods: We have followed a simple chemical synthesis method to prepare ultrafine ZnO nanoparticles. Then the interaction of ZnO nanoparticles with sucrose and honey sugar was investigated as a function of time using UV-visible spectroscopy to understand the basic interaction mechanism. Results: Well grown ZnO nanoparticles were found to form of crystallite size ~38 nm. The band gap was calculated from the absorption spectra and was found to be ~ 3.9 eV. This band gap enhancement indicates that the sizes of the nanoparticles are very small. The decrease of absorption with time indicates that the ZnO nanoparticles interact with the sugar molecule. Sucrose molecules are polar. Hence there is electrostatic attraction between the sucrose molecules and ZnO molecules resulting in the sucrose-ZnO composite system. On increasing the interaction time more and more sucrose molecules will cover the ZnO nanoparticles by forming ZnO-sucrose corona. The interaction time constant i.e., the binding time of sucrose molecule with the surface of ZnO nanoparticles, t1 was found to be 27.7127 min and is 29.59 min for honey. The results indicate an association process to form corona of ZnO nanoparticles with sucrose and honey molecules. Conclusion: We have successfully synthesized ultrafine ZnO nanoparticles of high band gap. The synthesized nanoparticles interact with the sucrose and honey molecules and form corona. This study is very important in understanding the interaction mechanism on nanoparticles with the biomolecules for possible drug delivery applications.

scholarly journals Estimation of Particle Size and Band Gap of Zinc Oxide Nanoparticle Synthesized by Chemical Precipitation Method

2020 ◽  
Vol 41 (1) ◽  
pp. 46-50
Author(s):  
Surendra K. Gautam ◽  
Bibek Sapkota ◽  
Arun Bhujel ◽  
Sitaram Bhattarai
Keyword(s):  
Particle Size ◽  
Zinc Oxide ◽  
Band Gap ◽  
Zno Nanoparticles ◽  
Hexagonal Wurtzite Structure ◽  
Chemical Precipitation ◽  
Chemical Precipitation Method ◽  
Precipitation Method ◽  
X Ray ◽  
Uv Visible

Zinc oxide (ZnO) nanoparticles were synthesized by chemical precipitation method using 0.1M and 0.3M [Zn(NO3)2.6H2O] and Na2CO3 solutions. The particle size and band gap of ZnO nanoparticles were estimated and effect of concentration on it was investigated. The synthesized nanoparticles were characterized by X-ray diffraction (XRD), Transmission electron microscopy (TEM), Energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR) and UV-visible spectroscopy. The XRD result revealed that synthesized ZnO nanoparticles have pure hexagonal wurtzite structure and the particle size varies from 27.0 nm to 29.9 nm estimated by using Debye-Scherrer’s equation. The TEM image also projected the average particle size in the range of 20-30 nm and selected area electron diffraction (SAED) further verified the formation of hexagonal wurtzite structure. The FTIR result showed a broad absorption band related to Zn-O vibration band. The UV-visible absorption showed a red shift in the absorption edge with increasing concentration of Zn(NO3)2.6H2O solution. The sizes and band gaps of ZnO nanoparticles increased and decreased, respectively with increasing concentration of Zn(NO3)2.6H2O solution from 0.1M to 0.3M.

Single Crystal, High Band Gap CdS Thin Films Grown by RF Magnetron Sputtering in Argon Atmosphere for Solar Cell Applications

2018 ◽  
Vol 10 (3) ◽  
pp. 03005-1-03005-6 ◽  
Author(s):  
Rupali Kulkarni ◽  
◽  
Amit Pawbake ◽  
Ravindra Waykar ◽  
Ashok Jadhawar ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cell ◽  
Magnetron Sputtering ◽  
Single Crystal ◽  
Band Gap ◽  
Rf Magnetron Sputtering ◽  
Argon Atmosphere ◽  
Cds Thin Films ◽  
High Band

High Band Gap Nanocrystalline Tungsten Carbide (nc-WC) Thin Films Grown by Hot Wire Chemical Vapor Deposition (HW-CVD) Method

2018 ◽  
Vol 10 (3) ◽  
pp. 03001-1-03001-6 ◽  
Author(s):  
Bharat Gabhale ◽  
◽  
Ashok Jadhawar ◽  
Ajinkya Bhorde ◽  
Shruthi Nair ◽  
...  
Keyword(s):  
Thin Films ◽  
Chemical Vapor Deposition ◽  
Tungsten Carbide ◽  
Band Gap ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Hot Wire ◽  
Cvd Method ◽  
High Band

Study on the Inclusion Behavior of Cucurbit [n] uril with Phenylalanine

2011 ◽  
Vol 197-198 ◽  
pp. 1153-1156
Author(s):  
Ning Chen ◽  
Ya Bin Li
Keyword(s):  
1H Nmr ◽  
Interaction Mechanism ◽  
Acetate Buffer Solution ◽  
Molar Ratio ◽  
High Concentration ◽  
Buffer Solution ◽  
Visible Absorption ◽  
Nmr Spectrum ◽  
Application Range ◽  
Uv Visible

The characteristics of host-guest complexes between cucurbit[n]uril (CB [n]) and phenylalanine were investigated by UV-visible absorption spectroscopy in acetate buffer solution at room temperature. It was found that the UV-visible absorption increased steadily with constantly dropping the high concentration of cucurbit[6]uril (CB [6]) and cucurbit[8]uril (CB [8]) in the phenylalanine solution which indicates that there are some interaction betweenCB [n] and phenylalanine.Then CB [6] and phenylalanine at molar ratio of 1:1 to weigh while CB [8] and phenylalanine at molar ratio of 1:2, respectively, are both demonstrated by 1H NMR spectra. 1H NMR spectrum of complexes was obtained, indicating an enthalpic driving force for host-guest complexes. The possible interaction mechanism and inclusion mode were also discussed. This work may extend the application range of CB [n] in supramolecular and pharmaceutical analysis.

A comparative study of solution-processed low- and high-band-gap chalcopyrite thin-film solar cells

2014 ◽  
Vol 47 (13) ◽  
pp. 135105 ◽  
Author(s):  
Se Jin Park ◽  
Yunae Cho ◽  
Sung Hwan Moon ◽  
Ji Eun Kim ◽  
Doh-Kwon Lee ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Comparative Study ◽  
Band Gap ◽  
Thin Film Solar Cells ◽  
Solution Processed ◽  
High Band

Band gap engineering and enhanced photoluminescence of Mg doped ZnO nanoparticles synthesized by wet chemical route

2015 ◽  
Vol 161 ◽  
pp. 275-280 ◽  
Author(s):  
Mohd. Arshad ◽  
Mohd. Meenhaz Ansari ◽  
Arham S. Ahmed ◽  
Pushpendra Tripathi ◽  
S.S.Z. Ashraf ◽  
...  
Keyword(s):  
Band Gap ◽  
Zno Nanoparticles ◽  
Chemical Route ◽  
Band Gap Engineering ◽  
Enhanced Photoluminescence ◽  
Wet Chemical ◽  
Wet Chemical Route ◽  
Doped Zno ◽  
Mg Doped

Assessment of Magnetic Properties between Fe and Ni Doped ZnO Nanoparticles Synthesized by Microwave Assisted Synthesis Method

2021 ◽  
Vol 317 ◽  
pp. 119-124
Author(s):  
Sabiu Said Abdullahi ◽  
Garba Shehu Musa Galadanci ◽  
Norlaily Mohd Saiden ◽  
Josephine Ying Chyi Liew
Keyword(s):  
Magnetic Properties ◽  
Zno Nanoparticles ◽  
Room Temperature ◽  
Synthesis Method ◽  
Dilute Magnetic Semiconductors ◽  
High Coercivity ◽  
Microwave Assisted Synthesis ◽  
Ferromagnetic Behavior ◽  
Microwave Assisted ◽  
Doped Zno

The emergence of Dilute Magnetic Semiconductors (DMS) with a potentials for spintronic application have attracted much researches attention, special consideration has been given to ZnO semiconductor material due to its wide band gap of 3.37 eV, large exciting binding energy of 60 meV, moreover, its ferromagnetic behavior at room temperature when doped with transition metals. MxZn1-xO (M = Fe or Ni) nanoparticles were synthesized by microwave assisted synthesis method calcined at 600°C. The structural, morphological and magnetic properties of these nanoparticles were studied using X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM) and Vibrating Sample Magnetometer (VSM) respectively. Single phase Wurtzite hexagonal crystal structure was observed for the undoped and Fe doped ZnO nanoparticles with no any impurity, whereas Ni doped ZnO nanoparticles shows the formation of NiO impurities. The magnetic measurement reveals a diamagnetic behavior for the undoped ZnO meanwhile a clear room temperature ferromagnetism was observed for both Fe and Ni doped ZnO. Fe doped ZnO present a high saturation magnetization compared to Ni doped ZnO. However, Ni doped ZnO present high coercivity. The research was confirmed that Fe doped ZnO material will be good material combination for spintronic applications.

Effect of Mn Dopant on Lattice Parameters and Band Gap Energy of Semiconductor ZnO Nanoparticles

2013 ◽  
Vol 829 ◽  
pp. 784-789 ◽  
Author(s):  
Mahmoud Zolfaghari ◽  
Mahshid Chireh
Keyword(s):  
Band Gap ◽  
Zno Nanoparticles ◽  
Room Temperature ◽  
Lattice Parameters ◽  
Memory Storage ◽  
Precipitation Method ◽  
High Electron ◽  
Gap Energy ◽  
Wide Range ◽  
Ft Ir

ZnO belongs to the II-VI semiconductor group with a direct band-gap of 3.2-3.37 eV in 300K and a high exciton binding energy of 60 meV. It has good transparency, high electron mobility, wide, and strong room-temperature luminescence. These properties have many applications in a wide area of emerging applications. Doping ZnO with the transition metals gives it magnetic property at room temperature hence making it multifunctional material, i.e. coexistence of magnetic, semiconducting and optical properties. The samples can be synthesized in the bulk, thin film, and nanoforms which show a wide range of ferromagnetism properties. Ferromagnetic semiconductors are important materials for spintronic and nonvolatile memory storage applications. Doping of transition metal elements into ZnO offers a feasible means of tailoring the band gap to use it as light emitters and UV detector. As there are controversial on the energy gap value due to change of lattice parameters we have synthesized Mn-doped ZnO nanoparticles by co-precipitation method with different concentrations to study the effect of lattice parameters changes on gap energy. The doped samples were studied by XRD, SEM, FT-IR., and UV-Vis. The XRD patterns confirm doping of Mn into ZnO structure. As Mn concentrations increases the peak due to of Mn impurity in FT-IR spectra becomes more pronounces hence confirming concentrations variation. We find from UV-Vis spectra that the gap energy due to doping concentration increases due to the Goldschmidt-Pauling rule this increase depends on dopant concentrations and increases as impurity amount increases.

scholarly journals A facile microwave-assisted synthesis of ZnO nanoparticles and their photocatalytic activity: Effect of pH

2021 ◽  
Vol 18 (2) ◽  
pp. 3-8
Author(s):  
Aura S. Merlano ◽  
Ángel Salazar
Keyword(s):  
Photocatalytic Activity ◽  
Zno Nanoparticles ◽  
Microwave Assisted Synthesis ◽  
Nano Zno ◽  
Effect Of Ph ◽  
Microwave Assisted ◽  
Activity Effect ◽  
Uv Visible

Este estudio reporta una síntesis fácil, libre de surfactantes y asistida por microondas para la producción de nanopartículas de óxido de zinc (ZnO). Se investigó el efecto del valor del pH sobre las propiedades químicas, ópticas, morfológicas y fotocatalíticas de las nanopartículas de ZnO. Las nanopartículas se caracterizaron mediante microscopía electrónica de barrido (SEM), espectroscopía infrarroja por transformada de Fourier (FTIR), espectroscopía de rayos X por dispersión de energía (EDS) y espectroscopía UV-visible (UV-Vis). El análisis SEM muestra que el tamaño de las partículas disminuye con el aumento del valor de pH. Los espectros UV-Vis muestran picos de absorción excitónica alrededor de 334-359 nm. Se encontró que la brecha de energía de las muestras disminuye con el aumento del valor de pH. Finalmente, se evaluó la eficiencia fotocatalítica de los nanomateriales de ZnO mediante la degradación de naranja de metileno (MO) bajo irradiación de luz UV-A y se logró una eficiencia de degradación del colorante del 93.04% para la muestra de ZnO con pH-13. Los resultados experimentales confirman que la ruta propuesta para producir ZnO es fácil, reproducible y amigable con el medio ambiente. Además, el nano ZnO tiene un gran potencial como fotocatalizador para eliminar compuestos orgánicos.

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