In situ synthesis of MnO2@SiO2–TiO2 nanofibrous membranes for room temperature degradation of formaldehyde

2019 ◽  
Vol 16 ◽  
pp. 61-66 ◽  
Author(s):  
Fuhai Cui ◽  
Weidong Han ◽  
Yang Si ◽  
Wenkun Chen ◽  
Meng Zhang ◽  
...  
Keyword(s):  
Room Temperature ◽  
In Situ Synthesis ◽  
Nanofibrous Membranes

scholarly journals In Situ Synthesis of Polyaniline Based Ceramic Wastes Composites: Dielectric and Electrical Properties

2021 ◽  
Author(s):  
M. Sohail ◽  
Adnan Shahzad ◽  
Mian Gul Sayed ◽  
Ihsan Ullah ◽  
M. Omer ◽  
...  
Keyword(s):  
Composite Material ◽  
High Frequency ◽  
Room Temperature ◽  
In Situ Synthesis ◽  
Face Centered Cubic ◽  
Dielectric Analysis ◽  
Photovoltaic Detectors ◽  
Pani Composite ◽  
Face Centered

Abstract In the present study, ceramic wastes collected from the premises of industrial zone in Peshawar, KP Pakistan were investigated. An effort has been made to recycle and use the ceramic wastes as fillers in polymeric composites. The negative cost ceramic wastes were purified and activated thermally. The elemental composition and pellets of the wastes were investigated through SEM/EDX analysis. Waste/Polyaniline (PANI) composite was synthesized via in-situ free radical polymerization technique. SEM of the composites showed the uniform distribution of fillers particles in the PANI matrix. XRD studies confirmed that the prepared composite material had a face- centered cubic geometry with distinct preferential orientations. Dielectric analysis showed that the materials exhibit active performance at high frequency regions (3MHz to 3GHz) at room temperature. The results show decrease in dielectric losses and capacitance (1.6 pF) at high frequency regions. AC conductivity of the composite has been increased up to 37.95 Scm-1. This revealed the effect of PANI on the ceramic wastes while increasing its conductance performance. This suggests that the composite material can be investigated for use in photovoltaic detectors, electro-responsive capacitors and power applications.

IN SITU SYNTHESIS, CHARACTERIZATION AND FREQUENCY DEPENDENT AC CONDUCTIVITY OF POLYANILINE/CoFe2O4 NANOCOMPOSITES

2011 ◽  
Vol 01 (03) ◽  
pp. 357-362 ◽  
Author(s):  
G. D. PRASANNA ◽  
H. S. JAYANNA
Keyword(s):  
Ac Conductivity ◽  
Room Temperature ◽  
In Situ Polymerization ◽  
In Situ Synthesis ◽  
Electron Micrograph ◽  
Frequency Range ◽  
X Ray Diffraction ◽  
Scanning Electron Micrograph ◽  
X Ray

The polyaniline (PANI)/ CoFe2O4 nanocomposites were prepared by an In Situ polymerization of aniline in an aqueous solution. The composites were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectrum,thermogravimetric analysis (TGA) and scanning electron micrograph (SEM). The AC conductivity and dielectric properties of these composites were investigated in the frequency range 1 kHz–10 MHz at room temperature. The AC conductivity was found to be constant up to 1 MHz and thereafter it increases steeply and it was observed maximum for the PANI with 60 wt% of CoFe2O4 nanocomposite. At lower frequencies the values of dielectric constant is maximum for pure CoFe2O4 nanoparticles.

In situ synthesis of flexible hierarchical TiO2 nanofibrous membranes with enhanced photocatalytic activity

2015 ◽  
Vol 3 (44) ◽  
pp. 22136-22144 ◽  
Author(s):  
Renzhong Zhang ◽  
Xueqin Wang ◽  
Jun Song ◽  
Yang Si ◽  
Xingmin Zhuang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Organic Dyes ◽  
In Situ Synthesis ◽  
Electrospinning Technique ◽  
Excellent Photocatalytic Activity ◽  
Nanofibrous Membranes

Flexible hierarchical mesoporous TiO2 NP modified TiO2 nanofibrous membranes with excellent photocatalytic activity towards organic dyes were fabricated by the combination of an electrospinning technique and in situ polymerization.

Room-Temperature in Situ Synthesis of Highly Efficient CsPbBr3/SiO2 Sol in Entirely Ethanol Solvent by Constructing Amine-Functionalized Silica Micelles

Langmuir ◽  
2020 ◽  
Vol 36 (13) ◽  
pp. 3565-3572 ◽  
Author(s):  
Jun Cheng ◽  
Shuanglong Yuan ◽  
Ludan Zhu ◽  
Long Chen ◽  
Chuanqi Liu ◽  
...  
Keyword(s):  
Room Temperature ◽  
In Situ Synthesis ◽  
Functionalized Silica ◽  
Highly Efficient ◽  
Amine Functionalized

scholarly journals In situ synthesis of copper nanoparticles encapsulated by nitrogen-doped graphene at room temperature via solution plasma

RSC Advances ◽  
2020 ◽  
Vol 10 (60) ◽  
pp. 36627-36635
Author(s):  
Phu Quoc Phan ◽  
Sangwoo Chae ◽  
Phuwadej Pornaroontham ◽  
Yukihiro Muta ◽  
Kyusung Kim ◽  
...  
Keyword(s):  
Copper Nanoparticles ◽  
Room Temperature ◽  
In Situ Synthesis ◽  
Plasma Process ◽  
Nitrogen Doped ◽  
Layer Graphene ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Few Layer Graphene

An excellent corrosion protection for copper nanoparticles by nitrogen-doped few-layer graphene via solution plasma process.

A convenient ultrasonic irradiation technique for in situ synthesis of zinc sulfide nanocrystallites at room temperature

2003 ◽  
Vol 77 (7) ◽  
pp. 933-936 ◽  
Author(s):  
G.Z. Wang ◽  
B.Y. Geng ◽  
X.M. Huang ◽  
Y.W. Wang ◽  
G.H. Li ◽  
...  
Keyword(s):  
Zinc Sulfide ◽  
Ultrasonic Irradiation ◽  
Room Temperature ◽  
In Situ Synthesis

In situ synthesis of nano-sized cobalt ferrite particle/organic hybrid

2006 ◽  
Vol 21 (5) ◽  
pp. 1336-1341 ◽  
Author(s):  
Satoshi Nakamura ◽  
Wataru Sakamoto ◽  
Toshinobu Yogo
Keyword(s):  
Saturation Magnetization ◽  
Room Temperature ◽  
Cobalt Ferrite ◽  
Organic Matrix ◽  
In Situ Synthesis ◽  
Organic Hybrid ◽  
Ferrite Particle ◽  
Hydrolysis Conditions ◽  
Cobalt Acetylacetonate

A CoFe2O4 particle/organic hybrid was synthesized using in situ processing of metalorganics of cobalt and iron below 100 °C. A mixture of cobalt (II) acetylacetonate (CA) and iron (III) 3-allylacetylacetonate (IAA) was hydrolyzed and polymerized yielding cobalt ferrite particle/organic hybrid. The crystallinity of cobalt ferrite depended upon the hydrolysis conditions of cobalt acetylacetonate-iron 3-allylacetylacetonate (CA-IAA). Nanocrystalline cobalt ferrite particles were uniformly dispersed in the organic matrix. The saturation magnetization of hybrid increased with increasing crystallinity of cobalt ferrite particles in the organic matrix. The hybrid showed a magnetization-applied field (BH) curve with no coercive force at room temperature. The magnetization versus H/T curves from 150 to 300 K were superimposed on the same curve and satisfied the Langevin equation. The hybrid revealed a saturation magnetization of 33.7 emu/g and a coercivity of 11 kOe at 4.2 K.

Sign in / Sign up

Export Citation Format

Share Document