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The hydrogen storage capacity of metal-containing polyacrylonitrile- based electrospun carbon nanofibers
ByongCholBai, JongGuKim, Mehraj-ud-dinNaik, JiSunIm, Young-SeakLee 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2011, Vol.12 No.3 8 171-176 (6 pages)
nism, as has been reported in many previous studies. This study investigated the effects of these metals on the mor- phological and hydrogen-storage properties of CNFs that were activated with an alkoxide at high temperatures. Compared to the metals that are involved in composite formation or are bonded to carbon or oxygen, the effects of metals on some CNFs were evi- denced by the increasing... -
졸-겔법에 의한 0.9PMN-0.1PT 소결체의 제조
연석주, 김종흠, 고태석 한국결정성장학회 한국결정성장학회지 6 Pages
한국결정성장학회 한국결정성장학회지 2002, Vol.12 No.1 1-6 (6 pages)
본 연구에서는 금속 알콕시드를 이용하여 0.9PMN-0.1PT 소결체를 제조하는데 있어 과량으로 첨가되는 $Mg(OC_2H5)_2$, Pb$(CH_3COO)_2{cdot}3H_2O$ 등이 페로브스카이트 상의 생성량과 소결 밀도, 유전 상수 등에 미치는 영향을 검토하였다. 졸-겔법으로 0.9PMN-0.1PT 세라믹을 제조함에 있어 $Mg(OC_2H5)_2$를 과량 첨가하는 경우 페로브스카이트 상의 생성율을 증가시키는 효과가 나타났다. 0.9PMN-0.1PT 조성에 $Mg(OC_2H5)_2$를 5wt% 과잉 텀가한 시편을 $1,150^{circ}C$에서 1시간 소결한 경우 페로브 스카이트 단일상을 얻었으며... -
Biogenic Volatile Compounds for Plant Disease Diagnosis and Health Improvement
Rouhallah Sharifi, Choong-Min Ryu 한국식물병리학회 The Plant Pathology Journal 11 Pages
한국식물병리학회 The Plant Pathology Journal 2018, 34권 6호 1 459-469 (11 pages)
offers a cheap and easy production method, but spray drying is more suitable when large-scale production is needed (Bakry et al., 2016). Sol-gel technology. Recently, researchers developed a new method, sol-gel technology, for microencapsulation of volatile compounds such as food flavorings. This method uses a matrix instead of beads. Alkoxide precursors such as tetraethoxysilane (TEOS) and... Plants and microorganisms (microbes) use information from chemicals such as volatile compounds to understand their environments. Proficiency in sensing and responding to these infochemicals increases an organism’s ecological competence and ability to survive in competitive environments, particularly with regard to plant-pathogen interactions. Plants and microbes acquired the ability to sense and respond to biogenic volatiles during their evolutionary history. However, these signals can only be... -
Carbon Doping of TiO2 for Visible Light Photo Catalysis - A review
K. Palanivelu, Ji Sun Im, Young-Seak Lee 한국탄소학회 Carbon Letters 11 Pages
한국탄소학회 Carbon Letters 2007, Vol.8 No.3 6 214-224 (11 pages)
& Method of doping Observations/Remarks Application tested Reference 1. Ti-alkoxide, sol-gel hydrol- ysis process and calcination at 250 oC Formation of highly condensed carbonaceous species, DRS shift towards visible light, Long term stable semi-conductor evident from photocurrent study, Up to 0.6% carbon incorpo- ration, Heating above 400 oC no carbon in TiO2 and no visible photocatalytic...