scholarly journals Aplikasi Carbon Nano Fiber Terintegrasi dengan Karbon Aktif Serabut Kelapa untuk Pengolahan Limbah Laundry

2017 ◽  
Vol 1 (2) ◽  
pp. 277
Author(s):  
Asih Melati
Keyword(s):  
Water Quality ◽  
Activated Carbon ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Effect Of Temperature ◽  
Argon Gas ◽  
Coconut Husk ◽  
Cvd Method ◽  
Nano Fiber ◽  
Do Concentration

The study effect of temperature on the morphology of carbon nanotube (CNF) based coconut husk has been done. CNF is one of the nanotechnology products that can be applied to reduce the concentration of the especially Pb, Cd, Ni. Thepurpose of this study are temperature effect on CNF and determine the potential uses treatment of CNF in the laundry waste. The Growth of CNF used the chemical vapor deposition (CVD) method with a temperature variation of 6000 C,7000 C, and 8000 C. CNF synthesis involves reacting activated carbon from coconut shell, ferrocene (Fe(C5H5)2) as a catalyst, benzene as the carbon source,and argon gas flowed. The Purification of CNF using nitric acid (HNO3) 65%. The result of Energy Dispersive Spestroscopy (EDS) characterization indicate that increasing temperatures indicate increasing carbon content. CNF as adsorbent deposited on the laundry waste. The water quality test of the laundry waste showed that the adsorption of CNF likely reduce Pb level at 67,4% at a temperature of 6000C and DO concentration increases. CNF T has no effect on the amount of PH and Cd, while BOD and COD consentration increases. 

scholarly journals Layer-dependent optical and dielectric properties of centimeter-scale PdSe2 films grown by chemical vapor deposition

2022 ◽  
Vol 6 (1) ◽  
Author(s):  
MingYang Wei ◽  
Jie Lian ◽  
Yu Zhang ◽  
ChenLin Wang ◽  
Yueming Wang ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Dielectric Properties ◽  
Vapor Deposition ◽  
Optoelectronic Devices ◽  
Chemical Vapor ◽  
Effect Of Temperature ◽  
Cvd Method ◽  
Number Of Layers ◽  
New Type ◽  
Exciton Effect

AbstractPalladium diselenide (PdSe2), a new type of two-dimensional noble metal dihalides (NMDCs), has received widespread attention for its excellent electrical and optoelectronic properties. Herein, high-quality continuous centimeter-scale PdSe2 films with layers in the range of 3L–15L were grown using Chemical Vapor Deposition (CVD) method. The absorption spectra and DFT calculations revealed that the bandgap of the PdSe2 films decreased with the increasing number of layers, which is due to the enhancement of orbital hybridization. Spectroscopic ellipsometry (SE) analysis shows that PdSe2 has significant layer-dependent optical and dielectric properties. This is mainly due to the unique strong exciton effect of the thin PdSe2 film in the UV band. In particular, the effect of temperature on the optical properties of PdSe2 films was also observed, and the thermo-optical coefficients of PdSe2 films with the different number of layers were calculated. This study provides fundamental guidance for the fabrication and optimization of PdSe2-based optoelectronic devices.

High Band Gap Nanocrystalline Tungsten Carbide (nc-WC) Thin Films Grown by Hot Wire Chemical Vapor Deposition (HW-CVD) Method

2018 ◽  
Vol 10 (3) ◽  
pp. 03001-1-03001-6 ◽  
Author(s):  
Bharat Gabhale ◽  
◽  
Ashok Jadhawar ◽  
Ajinkya Bhorde ◽  
Shruthi Nair ◽  
...  
Keyword(s):  
Thin Films ◽  
Chemical Vapor Deposition ◽  
Tungsten Carbide ◽  
Band Gap ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Hot Wire ◽  
Cvd Method ◽  
High Band

Effect of Temperature and Gas Flow on Bi2Se3 Nanoplates Grown by Chemical Vapor Deposition

2018 ◽  
Vol 18 (11) ◽  
pp. 7590-7594 ◽  
Author(s):  
Peng Gu ◽  
Jinling Yu ◽  
Xiaolin Zeng ◽  
Shuying Cheng ◽  
Yunfeng Lai ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Gas Flow ◽  
Chemical Vapor ◽  
Effect Of Temperature

Properties and Production Mechanism of Low-Temperature Deposited CAT-CVD Poly-Silicon films

1992 ◽  
Vol 283 ◽  
Author(s):  
Hideki Matsumura ◽  
Yoichi Hosoda ◽  
Seijiro Furukawa
Keyword(s):  
Chemical Vapor Deposition ◽  
Low Temperature ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Gas Pressure ◽  
Silicon Films ◽  
Production Mechanism ◽  
Cvd Method ◽  
Poly Silicon ◽  
Deposition Conditions

ABSTRACTPoly-silicon films are obtained at temperatures as low as 400 °C by the catalytic chemical vapor deposition (cat-CVD) method, in which deposition gases are decomposed by the catalytic or pyrolytic reactions with a heated catalyzer near substrates. It is found that there are roughly two modes of deposition conditions such as low gas pressure mode and high gas pressure mode for obtaining poly-silicon films, and also that the Hall mobility of the cat-CVD poly-silicon films of low gas pressure mode sometimes exceeds over 100 cm2/Vs.

Adhesion and Corrosion Resistance Properties of TiC/Ti(CN)/TiN Multilayer CVD Coatings on 42CrMo Steels

2009 ◽  
Vol 79-82 ◽  
pp. 1009-1012
Author(s):  
Jin Zhang ◽  
Qi Xue ◽  
Xiao Wei Cheng ◽  
Chun Mei Zhang ◽  
Song Xia Li
Keyword(s):  
Corrosion Resistance ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Fracture Morphology ◽  
Immersion Test ◽  
Multilayer Films ◽  
Multilayer Coatings ◽  
Cvd Method ◽  
42Crmo Steel ◽  
Immersion Corrosion

The TiC/Ti(CN)/TiN multilayer coatings were deposited on 42CrMo steel by chemical vapor deposition (CVD) method. The fracture morphology,structure,microhardness and adhesion of the coatings were analyzed. The immersion test in simulant solution with H2S,CO2 at 100°C and electrochemistry test in 20wt% H2SO4 at room temperture were applied to investigate the corrosion resistance of the multilayer films.The results reveal that the multilayer coatings can offer 42CrMo steel higher corrosion resistance,especially the immersion corrosion test.The corrosion rate of the samples coated with CVD multilayer films is reduced more 70 times than that of the uncoated and samples by quenching-polishing-quenching (QPQ) treat.

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