Facile and cost-effective synthesis of CNT@MCo2O4 (M = Ni, Mn, Cu, Zn) core–shell hybrid nanostructures for organic dye removal

RSC Advances ◽  
2015 ◽  
Vol 5 (97) ◽  
pp. 79765-79773 ◽  
Author(s):  
Haizhen Li ◽  
Zebin Sun ◽  
Yaxi Tian ◽  
Guijia Cui ◽  
Shiqiang Yan
Keyword(s):  
Room Temperature ◽  
Dye Removal ◽  
Annealing Treatment ◽  
Cost Effective ◽  
Organic Dye ◽  
Hybrid Nanostructures ◽  
Deposition Method ◽  
Post Annealing ◽  
Simple Chemical ◽  
Effective Synthesis

This study presents four hybrid materials of CNT@MCo2O4 (M = Ni, Mn, Cu, Zn) which were prepared via a simple chemical bath deposition method at room temperature followed by a post-annealing treatment.

Dielectric Properties of Nanograined BaTiO3 Ceramics Fabricated by Aerosol Deposition Method

2011 ◽  
Vol 485 ◽  
pp. 183-186 ◽  
Author(s):  
Tsutomu Furuta ◽  
Saki Hatta ◽  
Yoichi Kigoshi ◽  
Takuya Hoshina ◽  
Hiroaki Takeda ◽  
...  
Keyword(s):  
Grain Size ◽  
Room Temperature ◽  
Annealing Treatment ◽  
Aerosol Deposition ◽  
Dielectric Measurement ◽  
Deposition Method ◽  
Grain Sizes ◽  
Average Grain Size ◽  
Aerosol Deposition Method ◽  
Polarization Electric Field

Freestanding BaTiO3 ceramics films were fabricated using the aerosol deposition (AD) method and the size effect of nanograined BaTiO3 ceramics was demonstrated. Dense BaTiO3 thick film fabricated by the AD method was crystallized and detached from substrate by an annealing treatment at 600 °C, and then the grain size was controlled by a reannealing treatment at various temperatures. As a result, freestanding BaTiO3 thick films with various grain sizes from 24 to 170 nm were successfully obtained. Polarization–electric field (P–E) measurement revealed that BaTiO3 ceramics with grain sizes of more than 58 nm showed ferroelectricity, whereas BaTiO3 ceramics with an average grain size of 24 nm showed paraelectricity at room temperature. Dielectric measurement indicated that the permittivity decreased with decreasing grain size in the range of 170 to 24 nm.

scholarly journals Determining Contact Angle and Surface Energy of Co60Fe20B20Thin Films by Magnetron Sputtering

2011 ◽  
Vol 2011 ◽  
pp. 1-4 ◽  
Author(s):  
S. K. Wang ◽  
Yuan-Tsung Chen ◽  
S. R. Jian
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Contact Angle ◽  
Surface Energy ◽  
Room Temperature ◽  
Annealing Treatment ◽  
Test Liquid ◽  
X Ray Diffraction ◽  
X Ray ◽  
Post Annealing

This study examined the deposition of CoFeB thin films on a glass substrate at room temperature (RT), as well as the effects of conducting postannealing at heat annealingTA=150°C for 1 h. The thickness (tf) of the CoFeB thin films ranged from 100 Å to 500 Å. The microstructure, average contact angle, and surface energy properties were also investigated. X-ray diffraction (XRD) revealed that CoFeB films are nanocrystalline at RT and that post-annealing treatment increases in conjunction with the crystallinity. The surface energy of the CoFeB thin films is related to adhesive strength. The CoFeB films form a contact angle of larger than90∘with water as a test liquid. This finding demonstrates that the CoFeB film is hydrophobic. Astfincreases from 100 Å to 500 Å, the surface energy at RT decreases from 40 mJ/mm2to 32 mJ/mm2. During post-annealing treatment, the surface energy increases from 32 mJ/mm2to 35 mJ/mm2, astfincreases from 100 Å to 300 Å; then it decreases to 31 mJ/mm2, astfincreases from 300 Å to 500 Å. The surface energy of the as-deposited CoFeB thin films exceeds that during post-annealing treatment at thicknesses of 100 Å and 200 Å, suggesting that as-deposited CoFeB thin film increases the adhesion.

scholarly journals Annealing and doping concentration effects on Y2O3: Sm3+ nanopowder obtained by self-propagation room temperature reaction

2013 ◽  
Vol 45 (3) ◽  
pp. 323-329 ◽  
Author(s):  
S. Culubrk ◽  
V. Lojpur ◽  
V. Djordjevic ◽  
M.D. Dramicanin
Keyword(s):  
Room Temperature ◽  
Emission Spectra ◽  
Cost Effective ◽  
Ion Concentration ◽  
Temperature Reaction ◽  
Concentration Effects ◽  
Tem Analysis ◽  
Forbidden Transition ◽  
Effective Synthesis ◽  
Post Synthesis

In this report, structure, morphology and luminescence of Y2O3:Sm3+ nanoparticles prepared by self-propagating room temperature reaction are presented. This new, simple and cost effective synthesis allows obtaining desired phase composition by mixing appropriate amounts of yttrium and samarium nitrates together with sodium hydroxide. A set of samples is prepared with different Sm3+ concentrations (0.1, 0.2, 0.5, 1 and 2 at %) in order to observe changes of luminescence properties. Also, effects of post synthesis annealing at several temperatures (600?C, 800?C and 1100?C) are analyzed. For all samples X-ray diffraction showed that powders have cubic bixbyite structure (Ia-3), and TEM analysis showed particles of less than 100 nm. Luminescence emission spectra clearly show peaks characteristic for electronic spin-forbidden transition of Sm3+ ions 4G5/2?6H5/2, 6H7/2 and 6H9/2 centered at 578, 607 and 654 nm, respectively. Emission lifetime values decrease with Sm3+ ion concentration increment, from 1.94 ms for 0.1 at% to 0.97 ms for 2 at%. In addition, enlargement of lifetime value is observed when thermal treatment is done at the highest temperature due to the elimination of luminescence quenching species from the surface of particles.

Room Temperature Synthesis of Magnetite Particles by an Oil Membrane Layer-Assisted Reverse Co-Precipitation Approach

2021 ◽  
Vol 1162 ◽  
pp. 41-46
Author(s):  
Uripto Trisno Santoso ◽  
Abdullah ◽  
Dwi Rasy Mujiyanti ◽  
Dahlena Ariyani ◽  
Joyo Waskito
Keyword(s):  
Room Temperature ◽  
Cost Effective ◽  
Inert Gases ◽  
Precipitation Method ◽  
Ambient Atmosphere ◽  
Membrane Layer ◽  
Naoh Solution ◽  
Effective Synthesis ◽  
Magnetite Particles ◽  
Co Precipitation

Reverse co-precipitation (RCP) in ambient atmosphere is one of the strategies to produce magnetite nanoparticles in a rapid, simple, and cost-effective synthesis route without applying temperature surfactants or inert gases. However, RCP of ferrous/ferric blended salt in sodium hydroxide (NaOH) solution in an oxidizing medium produced of maghemite as a dominant phase rather than magnetite because of the oxidation of Fe2+ to Fe3+ happened. Based on this background, an oil membrane layer-assisted reverse co-precipitation approach has been examined to synthesis of magnetite in ambient atmosphere at room temperature. The result showed that although addition of benzene as an oil membrane layer was effective to prevent oxidation of magnetite to maghemite, but the magnetite particle size for the samples from the oil membrane layer-assisted reverse co-precipitation method was much larger than that from a reverse co-precipitation method without addition of oil membrane layer.

Selenium vacancies enriched the performance of supercapacitors with excellent cycling stability via a simple chemical bath deposition method

2019 ◽  
Vol 48 (23) ◽  
pp. 8254-8263 ◽  
Author(s):  
Venkata Thulasi-Varma Chebrolu ◽  
Balamuralitharan Balakrishnan ◽  
Inho Cho ◽  
Jin-Soo Bak ◽  
Hee-Je Kim
Keyword(s):  
Chemical Bath Deposition ◽  
Cost Effective ◽  
Cycling Stability ◽  
Chemical Bath Deposition Method ◽  
Deposition Method ◽  
Simple Chemical ◽  
Excellent Cycling Stability

Herein, we report a simple and cost-effective route for the fabrication of NiWO4, NiWO4P, and NiWO4Se nanostructures using the chemical bath deposition method.

scholarly journals Effect of Post-Annealing Treatment on the Morphological and Optical Properties of ZnO Thin Film Fabricated by Spraying Deposition Method

2021 ◽  
Vol 11 (1) ◽  
pp. 113
Author(s):  
Teguh Darsono ◽  
Muqoyyanah Muqoyyanah ◽  
Sulhadi Sulhadi ◽  
Siti Wahyuni ◽  
Putut Marwoto ◽  
...  
Keyword(s):  
Thin Film ◽  
Optical Band Gap ◽  
Annealing Treatment ◽  
Annealed Film ◽  
Band Gap Energy ◽  
Sem Analysis ◽  
Morphological Properties ◽  
Zno Thin Film ◽  
Deposition Method ◽  
Post Annealing

<p class="AbstractText">This work investigated the effect of post-annealing treatment on the fabrication of zinc oxide (ZnO) thin film by spraying deposition method. Based on SEM analysis, the annealed ZnO thin film at 400˚C presented better uniformity as compared to the non-annealed film. Further measurement by UV-Vis revealed that the lowest optical band gap energy (<em>E<sub>g</sub></em>) (3.22 eV) was achieved by 400˚C sample. These results confirmed that post-annealing treatment enhanced the optical and morphological properties of the fabricated ZnO thin film.</p>

Low temperature and controlled synthesis of Bi2(S1−xSex)3 thin films using a simple chemical route: effect of bath composition

RSC Advances ◽  
2015 ◽  
Vol 5 (70) ◽  
pp. 57090-57100 ◽  
Author(s):  
Manauti M. Salunkhe ◽  
Kishorkumar V. Khot ◽  
Sanjay H. Sahare ◽  
Popatrao N. Bhosale ◽  
Tejashree Bhave
Keyword(s):  
Thin Films ◽  
Low Temperature ◽  
Chemical Bath Deposition ◽  
Room Temperature ◽  
Controlled Synthesis ◽  
Deposition Method ◽  
Bath Composition ◽  
Photoelectrochemical Performance ◽  
Chemical Route ◽  
Simple Chemical

Nanostructured Bi2(S1−xSex)3 thin films were synthesized using a simple chemical bath deposition method at room temperature, and their photoelectrochemical performance was tested.

Sign in / Sign up

Export Citation Format

Share Document