Fabrication and analysis of new bismuth borate glasses containing cement kiln dust

Saddeek, Yasser B.; Hassan, Hazem; elfadeel, G. Abd

doi:10.1016/j.jnoncrysol.2014.07.004

Cited by 24 publications

(17 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The sharp peaks indicate that the products are well crystallized and oriented [ 23 ]. All the diffraction peaks can be well indexed to the hexagonal phase of ZnO reported in JCPDS card number 01-089-1397 and no other characteristic peaks are observed [ 24 , 25 ].…”

Section: Resultsmentioning

confidence: 92%

Construction of Zinc Oxide into Different Morphological Structures to Be Utilized as Antimicrobial Agent against Multidrug Resistant Bacteria

Elkady

Shokry

Hafez

et al. 2015

Bioinorganic Chemistry and Applications

Self Cite

View full text Add to dashboard Cite

Nano-ZnO has been successfully implemented in particles, rods, and tubes nanostructures via sol-gel and hydrothermal techniques. The variation of the different preparation parameters such as reaction temperature, time, and stabilizer agents was optimized to attain different morphological structures. The influence of the microwave annealing process on ZnO crystallinity, surface area, and morphological structure was monitored using XRD, BET, and SEM techniques, respectively. The antimicrobial activity of zinc oxide produced in nanotubes structure was examined against four different multidrug resistant bacteria: Gram-positive (Staphylococcus aureus and Bacillus subtilis) and Gram-negative (Escherichia coli and Pseudomonas aeruginosa) strains. The activity of produced nano-ZnO was determined by disc diffusion technique and the results revealed that ZnO nanotubes recorded high activity against the studied strains due to their high surface area equivalent to 17.8 m2/g. The minimum inhibitory concentration (MIC) of ZnO nanotubes showed that the low concentrations of ZnO nanotubes could be a substitution for the commercial antibiotics when approached in suitable formula. Although the annealing process of ZnO improves the degree of material crystallinity, however, it declines its surface area and consequently its antimicrobial activity.

show abstract

Section: Resultsmentioning

confidence: 92%

Construction of Zinc Oxide into Different Morphological Structures to Be Utilized as Antimicrobial Agent against Multidrug Resistant Bacteria

Elkady

Shokry

Hafez

et al. 2015

Bioinorganic Chemistry and Applications

Self Cite

View full text Add to dashboard Cite

show abstract

“…It was evident that both Langmuir and Freundlich isotherm models are appropriate for describing the isothermal profiles of phosphorus sorption process onto the prepared zinc oxide nanopowder. These results indicated that the sorption process mainly occurs as monolayer and multilayers sorption process [26].…”

Section: Langmuir Modelmentioning

confidence: 82%

“…By ignoring the extremely low and large value of concentrations, the model assumes that heat of adsorption (function of temperature) of all molecules in the layer would decrease linearly rather than logarithmically with coverage. This model could be expressed by the following linear equation [26]:…”

Section: Temkin Modelmentioning

confidence: 99%

Sorption Profile of Phosphorus Ions onto ZnO Nanorods Synthesized via Sonic Technique

Elkady

Hassan

Salama

2016

Journal of Engineering

Self Cite

View full text Add to dashboard Cite

High surface area zinc oxide material in nanorod morphological structure was synthesized using an ultrasonic technique in the presence of polyvinyl pyrrolidone as stabilizing agent. The crystallite, morphology, and surface area of the prepared white powder material were identified using XRD, SEM, and BET techniques, respectively. X-ray analysis confirms the high purity of synthesized ZnO. The evaluated specific surface area of prepared ZnO was 16.7 m2/g; this value guarantees high efficiency for water purification. The feasibility of synthesized ZnO nanorods for phosphorus sorption from aqueous solution was established using batch technique. Nano-zinc oxide exhibits high efficiency for phosphorus removal; the equilibrium state was recorded within 90 minutes. The most effective hydrogen ion concentration of the polluted solution was recorded at pH = 1 for phosphorus decontamination. The equilibrium of phosphorus sorption onto ZnO nanorods was well explained using both Langmuir and Temkin isotherm models. The calculated maximum monolayer sorption capacity was 89 mg/g according to Langmuir isotherm at 27°C. In order to explain the phosphorus sorption mechanism onto the prepared ZnO nanorods, three simplified kinetic models of pseudo-first order, pseudo-second order, and intraparticle diffusion rate models were tested. Kinetics was well fitted by pseudo-second order kinetic model with a contribution of intraparticle diffusion.

show abstract

“…BV 14 directly harms skin, eyes, and the gastrointestinal respiratory tract. Moreover, this dye may provoke phototoxic and photo allergic reactions [ 9 ]. This type of dye was characterized by its carcinogenic toxicity in both humans and animals [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Profile of Basic Dye onto Novel Fabricated Carboxylated Functionalized Co-Polymer Nanofibers

2016

View full text Add to dashboard Cite

Acrylonitrile-Styrene co-polymer was prepared by solution polymerization and fabricated into nanofibers using the electrospinning technique. The nanofiber polarization was enhanced through its surface functionalization with carboxylic acid groups by simple chemical modification. The carboxylic groups' presence was dedicated using the FT-IR technique. SEM showed that the nanofiber attains a uniform and porous structure. The equilibrium and kinetic behaviors of basic violet 14 dye sorption onto the nanofibers were examined. Both Langmuir and Temkin models are capable of expressing the dye sorption process at equilibrium. The intraparticle diffusion and Boyd kinetic models specified that the intraparticle diffusion step was the main decolorization rate controlling the process.

show abstract

Fabrication and analysis of new bismuth borate glasses containing cement kiln dust

Cited by 24 publications

References 45 publications

Construction of Zinc Oxide into Different Morphological Structures to Be Utilized as Antimicrobial Agent against Multidrug Resistant Bacteria

Construction of Zinc Oxide into Different Morphological Structures to Be Utilized as Antimicrobial Agent against Multidrug Resistant Bacteria

Sorption Profile of Phosphorus Ions onto ZnO Nanorods Synthesized via Sonic Technique

Adsorption Profile of Basic Dye onto Novel Fabricated Carboxylated Functionalized Co-Polymer Nanofibers

Contact Info

Product

Resources

About