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Showing papers in "Advanced Powder Technology in 2017"


Journal ArticleDOI
TL;DR: In this paper, the authors synthesize NZVI particles from the plant extracts including Rosa damascene (RD), Thymus vulgaris (TV), and Urtica dioica (UD).

256 citations


Journal ArticleDOI
TL;DR: In this article, a new and convenient synthetic method based on a reaction in an aqueous system was reported, which can produce a new nanocomposite superionic system (CdHgI4/HCgI2) at 70°C for 20min.

230 citations


Journal ArticleDOI
TL;DR: In this paper, P granatum peel extract from cobalt nitrate hexahydrate at low temperature was used for the synthesis of cobalt-oxide nanoparticles for photo-catalytic applications.

189 citations


Journal ArticleDOI
TL;DR: In this paper, the synthesis of spherical zinc oxide nanoparticles (ZnO NPs) under ambient conditions was carried out under Eucalyptus globulus leaf extract mediated synthesis.

183 citations


Journal ArticleDOI
TL;DR: In this article, the free convective heat transfer of the Al 2 O 3 -Cu water hybrid nanofluid in a cavity filled with a porous medium is investigated. And the experimental data show dramatic enhancement in the thermal conductivity and dynamic viscosity of the synthesized hybrid nano-luids, and hence, these thermophysical properties could not be modeled using available models of nanometrics.

173 citations


Journal ArticleDOI
TL;DR: In this article, the melting process of a nano-enhanced phase change material is investigated in a square cavity with a hot cylinder located in the middle of the cavity in the presence of both single and hybrid nanoparticles.

155 citations


Journal ArticleDOI
Naramgari Sandeep1
TL;DR: In this paper, the authors investigated the flow and heat transfer nature of liquid film flow of magnetic-nanofluids over a stretching surface by considering the aligned magnetic field with non-uniform source/sink and thermal radiation.

141 citations


Journal ArticleDOI
TL;DR: In this paper, ZnO nanoparticles were green-synthesized from Acalypha indica leaf extract using zinc acetate as a precursor, and they were calcined at three different temperatures, namely 100, 300, and 600°C.

138 citations


Journal ArticleDOI
TL;DR: In this paper, the heat/mass and motile microorganisms transfer rates in the convective stretched flow of nanofluid consisting of nanoparticles and gyrotactic microorganisms are investigated.

133 citations


Journal ArticleDOI
TL;DR: In this paper, the authors highlight the current trends in the hydrothermal synthesis of zeolite, attention is paid to the utilization of natural resources and manufacturing wastes as raw materials to synthesize Zeolite.

129 citations


Journal ArticleDOI
TL;DR: In this article, a study on the synthesis of geopolymers based on alkaline activation of waste-glass powder using aqueous solutions of sodium hydroxide and sodium silicate with different Na2O contents as alkali activators was presented.

Journal ArticleDOI
TL;DR: In this article, a two-dimensional numerical model is developed to simulate the performance of a heat pipe using various nanofluids, and it was observed that the use of Nanofluid reduces the axial flow pressure of the fluid inside the wick.

Journal ArticleDOI
TL;DR: In this paper, a Spark Plasma Sintering (SPS) was employed to fabricate monolithic titanium and in-situ formed TiB whisker (TiBw) reinforced titanium matrix composites by adding different amounts of TiB2 as boron source.

Journal ArticleDOI
TL;DR: In this article, a similarity transformation is used to transmute the governing momentum and energy equations into non-linear ordinary differential equations with the appropriate boundary conditions, which are solved by Duan-Rach Approach (DRA).

Journal ArticleDOI
TL;DR: In this article, a comparative study of the different graphene oxide reduction strategies to produce reduced graphene oxide is discussed, and it is shown that the amount of oxygen functional groups in the reduced graphite oxide structure is highly dependent on the reduction strategy.

Journal ArticleDOI
TL;DR: In this paper, the effect of Al concentration on the structure, morphology, absorption spectra and photocatalytic properties investigated by using X-ray, TEM, EDS and UV-Vis spectrophotometer approaches.

Journal ArticleDOI
TL;DR: In this article, an alkaline solution, thermally activated kaolinite clay and a mineral additive (calcium carbonate) were mixed with the aim to elaborate a geopolymer material with physical and mechanical properties comparable to those of classical construction materials.

Journal ArticleDOI
TL;DR: In this paper, the authors used fly ash to synthesize geopolymers at ambient temperature and found that the appearance of a new FTIR band in the 1080-1096-cm−1 region in MA fly ash was attributed to SiQn structural units of quartz.

Journal ArticleDOI
TL;DR: In this article, the optimal profile of wavy-wall for an enclosure to study the nanoparticles treatment around the heated cylinder was found and the effect of heated cylinder diameter on the heat transfer in the optimized case was discussed.

Journal ArticleDOI
TL;DR: In this paper, a numerical analysis of laminar natural convection with entropy generation in a partially heated open triangular cavity filled with a Cu-water nanofluid has been carried out.

Journal ArticleDOI
TL;DR: In this paper, the effect of sintering mode and graphene addition on the microstructural, mechanical and electrical properties of copper-graphene metal matrix composites reinforced with varying amounts (0.9, 1.8, 2.7 and 3.6) of graphene particles fabricated through powder metallurgy route was investigated.

Journal ArticleDOI
TL;DR: In this article, a facile solid state reaction route was employed to synthesize the Co 3 O 4 /ZnO p-n heterostructure by grinding zinc acetate, Co 3 o 4 and sodium hydroxide with appropriate molar ratios together at room temperature without any surfactant or template.

Journal ArticleDOI
TL;DR: In this article, a method has been developed that combines X-ray computed tomography and spherical harmonic analysis to give analytical, differentiable mathematical functions for the three-dimensional shape of star-shape particles.

Journal ArticleDOI
TL;DR: In this article, the authors examined the effect of thermal radiation on the thermal boundary layer thickness of an exponentially stretching surface saturated by nanofluids and showed that the thermal layer thickness significantly increases with the increase of Brownian motion, thermophoresis number and magnetic field strength.

Journal ArticleDOI
TL;DR: In this paper, the adsorption capacities of five organic micropollutants (OMPs) onto magnetic porous carbon-based sorbent (MPCS) with core-shell structure was prepared from the pyrolysis of FeIII-modified MOF-5.

Journal ArticleDOI
TL;DR: In this article, the effects of thermophoresis and Brownian motion on two-dimensional magnetohydrodynamics (MHD) radiative Casson fluid past a moving wedge filled with gyrotactic microorganisms are investigated.

Journal ArticleDOI
TL;DR: In this paper, a noncentrosymmetric rare earth borate Rb 3 NdB 6 O 12 was found in the ternary system Rb 2 O−Nd 2 O 3 −B 2 O3, and the crystal structure was obtained by the Rietveld method.

Journal ArticleDOI
TL;DR: In this paper, the Gibbs free energy and enthalpy changes associated with these reactions were determined using quantum mechanical analysis, and the results indicated that the dehydration and dehydrogenation reactions of the hydroxyl groups in coal were only mildly exothermic, whereas reactions involving the oxidation of the carbonyl groups were much more exthermic.

Journal ArticleDOI
TL;DR: In this article, the combined effects of magnetic field and heat generation or absorption on unsteady boundary-layer convective heat and mass transfer of a non-Newtonian nanofluid over a permeable stretching wall have been addressed.

Journal ArticleDOI
TL;DR: Wang et al. as mentioned in this paper used a Fourier Transform Infrared Spectrometer (FT-IR) to obtain the IR spectrum of the respirable coal dust, and the percentage of functional groups for each respirablecoal dust was obtained by the peak area normalization method and then analyzed.