http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Reza Khalifeh (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Maryam Rajabzadeh,Reza Khalifeh,Hossein Eshghi,Ali Hafizi 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.89 No.-
A new nanoreactor type structure composed of hollow mesoporous silica spheres and CuO nanoparticlesloaded inside the interior cavity of spheres has been designed and successfully prepared. The synthesismethod is proceed in a four step procedure by using carbon spheres as the hard template together with acoating of tetraethyl orthosilicate (TEOS) and cetyltrimethyl ammonium bromide (CTAB) mixture. Theobtained nanoreactors were characterized with FE-SEM, elemental mapping, TEM, XRD, BET, ICP and TPRanalysis. The CO2 fixation reaction is applied to evaluate the catalytic performance of the synthesizedCuO@SiO2 multi-yolk@shell catalyst. This catalyst exhibits superior activity in CO2 fixation reactions with96% yield in 4 h at low pressure. The catalyst demonstrates superb mechanical stability, high activity andis recovered for at least six times without loss of activity in CO2 fixation reaction, showing that this type ofnanoreactor could be applied as a promising material in advanced catalysis applications.
-
Zahra Haghparas,Zoheir Kordrostami,Mohsen Sorouri,Maryam Rajabzadeh,Reza Khalifeh 한국생물공학회 2020 Biotechnology and Bioprocess Engineering Vol.25 No.4
In the present study, an electrochemical glucose biosensor has been developed based on nano-copper oxide micro hollow spheres. The nano-copper oxide micro hollow spheres were synthesized via hydrothermal method using pluronic F-127 as a surfactant. For structural characterization of CuO hollow sphere structures, the scanning electron microscopy and X-ray diffraction spectroscopy were applied. The performance parameters of the sensor were improved by optimizing the modification process. The electrochemical characteristics of the proposed glucose biosensor were investigated by using cyclic voltammetry and chronoamperometry techniques in both 0.1 M and 1M NaOH solutions. The results revealed that the proposed electrode has a wide dynamic range from 1 μM to 11.50 mM for glucose detection at 0.1 M NaOH solution which covers two linear ranges from 1 μM to 3 mM and from 3 mM to 11.50 mM. The sensitivities of the two linear ranges were obtained as 25.0 ± 0.8 μA·mM-1·cm-2 and 13.6 ± 0.3 μA·mM-1·cm-2, respectively. An extremely wide linear range from 1 μM to 16 mM with a sensitivity of 35.2 ± 0.4 μA·mM-1·cm-2 was achieved for the 1 M NaOH solution. The sensor achieved a 1 μM practical lowest limit of detection which is an excellent low limit of detection at both NaOH concentrations compared to some important previously reported works. In addition, the good tolerance toward the interfering species and the satisfactory behavior in real sample analysis verified the promising performance of the proposed sensor.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
