Results 271 to 280 of about 357,740 (345)

Resource utilization of rice husk biomass: Preparation of MgO flake-modified biochar for simultaneous removal of heavy metals from aqueous solution and polluted soil.

Environmental Pollution, 2022
In general, the remediation performance of heavy metals can be further improved by metal-oxide modified biochar. This work used MgO-modified rice husk biochar (MgO-5%@RHB-450 and MgO-5%@RHB-600) with high surface activity for simultaneous remediation and
Anyu Li, Hanquan Xie, Ying Qiu, Lihu Liu, Tao Lu, Weihua Wang, Guohong Qiu   +6 more
semanticscholar   +1 more source

KHCO3 activated biochar supporting MgO for Pb(II) and Cd(II) adsorption from water: Experimental study and DFT calculation analysis.

Journal of Hazardous Materials, 2021
A new strategy that simultaneous use of KHCO3 activated biochar and nano-MgO incorporation for Pb2+ and Cd2+ removal from water was raised. After activating by KHCO3, the BC showed a higher surface area and could carry more MgO nanoparticles the BC owned.
Zhengyuan Feng, N. Chen, Tongmian Liu, Chuanping Feng   +3 more
semanticscholar   +1 more source

High frequency dielectric properties of MgO, Fe/MgO and Cr/MgO

Journal of Materials Science, 1981
The study of the dielectric constant and loss in pure single-crystal MgO and in Fe- and Cr-doped crystals, the low frequency results of which have been reported [1], has now been extended to cover frequencies from 500 Hz to 9 GHz. Measurements were made on the same specimens, at room temperature, using bridge, cavity, slotted-line and cavity-resonator ...
J. S. Thorp, B. L. J. Kulesza, N. E. Rad, S. V. J. Kenmuir   +3 more
openaire   +1 more source

Removal of Cd from aqueous solution by chitosan coated MgO-biochar and its in-situ remediation of Cd-contaminated soil.

Environmental Research, 2021
In this study, magnesium oxide biochar-chitosan composite (MgO-BCR-W) prepared through modification with MgCl2 and chitosan was investigated as an adsorbent for the removal of Cd from the aquatic and soil environment.
Jiangxin Xiang, Qintie Lin, Xiaosheng Yao, Guangcai Yin   +3 more
semanticscholar   +1 more source

The dielectric behaviour of single-crystal MgO, Fe/MgO and Cr/MgO

Journal of Materials Science, 1981
The dielectric constantse′ and loss factors,e″, for pure single-crystal MgO and for Fe-and Cr-doped crystals have been measured at frequencies, ω, from 500 Hz to 500 kHz at room temperature. For pure MgO at 1 kHz the values ofe′ and the loss tangent, tan δ, (9.62 and 2.16×10−3, respectively) agree well with the data of Von Hippel; the conductivity, σ ...
J. S. Thorp, N. Enayati-Rad
openaire   +1 more source

Tunnel current measurement of MgO and MgO/Fe/MgO nanoregions during TEM observation

Superlattices and Microstructures, 2008
Abstract Conductance measurements of nanostructures with simultaneous transmission electron microscopy (TEM) were performed on thin insulating MgO films (2–3 nm thick) and MgO/Fe/MgO tri-layer films (2 nm/1 nm/2 nm) deposited on tip-shaped Au electrodes.
Masashi Arita, Youhei Okubo, Kouichi Hamada, Yasuo Takahashi   +3 more
openaire   +1 more source

Structural, optical, cytotoxicity, and antimicrobial properties of MgO, ZnO and MgO/ZnO nanocomposite for biomedical applications

Ceramics International, 2021
In this study, MgO nanoparticles were successfully fabricated and incubated inside ZnO NPs to form MgO/ZnO nanocomposite for biomedical applications. The x-ray diffraction analysis of MgO, ZnO, and MgO/ZnO has shown the single-phase x-ray diffraction ...
A. Nigam, S. Saini, A. Rai, S. J. Pawar
semanticscholar   +1 more source

The effect of the MgO buffer layer thickness on magnetic anisotropy in MgO/Fe/Cr/MgO buffer/MgO(001)

Journal of Applied Physics, 2016
The relationship between the magnetic properties and MgO buffer layer thickness d was studied in epitaxial MgO/Fe(t)/Cr/MgO(d) layers grown on MgO(001) substrate in which the Fe thickness t ranged from 0.4 nm to 1.1 nm. For 0.4 nm ≤ t ≤ 0.7 nm, a non-monotonic coercivity dependence on the MgO buffer thickness was shown by perpendicular magneto-optic ...
Anna Kozioł-Rachwał, Takayuki Nozaki, Vadym Zayets, Hitoshi Kubota, Akio Fukushima, Shinji Yuasa, Yoshishige Suzuki   +6 more
openaire   +1 more source

Nanoparticles migration due to thermophoresis and Brownian motion and its impact on Ag-MgO/Water hybrid nanofluid natural convection

, 2020
The present study aims to investigate the impact of nanoparticle migration due to Brownian motion and thermophoresis on Ag-MgO/Water hybrid nanofluid natural convection.
S. Goudarzi, Masih Shekaramiz, Alireza Omidvar, Ehsan Golab, A. Karimipour, A. Karimipour   +5 more
semanticscholar   +1 more source

Atomic diffusion processes in MgO/Fe/MgO multilayer

Superlattices and Microstructures, 2015
Abstract In present work, atomic diffusion processes in MgO/Fe/MgO structure is investigated. This structure is deposited by using e-beam evaporation method in ultra-high vacuum (10 −7  Torr). X-ray diffraction pattern exhibits amorphous nature of MgO layer, however, Au and Fe layers are polycrystalline in nature.
Jitendra Pal Singh, Weon Cheol Lim, Keun Hwa Chae   +2 more
openaire   +1 more source