Báo cáo hóa học: " Synthesis and Electrochemical Sensing Toward Heavy Metals of Bunch-like Bismuth Nanostructures" doc

... current of the heavy metals at the bunch-like bismuth electrode Nanoscale Res Lett (2010) 5:398–402 399 123 NANO EXPRESS Synthesis and Electrochemical Sensing Toward Heavy Metals of Bunch-like Bismuth ... measurements of the same trace heavy metals obtained at the in situ prepared bismuth film electrodes (BiFEs) and the bunch-like bismuth under the s...

Ngày tải lên: 22/06/2014, 00:20

... with- out further purification and all experiments were carried out using distilled water. Synthesis of CdSe and CNT-CdSe composite Synthesis of CdSe For the synthesis of CdSe compound, the sodium ... wavelength at 400-800 nm, assigned to the band adsorption of CdSe. And the absorption of CNT-CdSe composite is higher than that of CdSe compound in both of UV light an...

Ngày tải lên: 21/06/2014, 03:20

... measurements and data analysis, and drafted the manuscript. DG and DX made the conception and design of the manuscript. ZZ2 carried out the XPS measurements and data analysis. JLZ and ZZ1 participated ... experiment and theroy, such as, Mn [5,6], Gd [7], and Cr [8,9]. Compared with GaN, ZnO has a lot of outs tanding superiorities, as is known to all, which has a wide band-...

Ngày tải lên: 20/06/2014, 22:20

... stretched and aligned along the direction of the sample's tilting. For the synthesis of the conductive nanowire, DNA molecules were treated with AN-AuNPs of 60 µL for 30 min; AN-AuNPs of 60 ... LTD 42, Changwon, 642-716, Republic of Korea 3 Department of Chemistry and Institute of Basic Science, Sungkyunkwan University, Suwon, 440-746, Republic of Korea 4 Qua...

Ngày tải lên: 20/06/2014, 23:20

... basis of a trigonal structure of space group ¯ R3m with monoclinic C2/m phase as expected. The morphologies and electrochemical properties of the samples obtained were compared as the value of x and ... range of stoichiometric compositions. Therefore, the present work reports on the synthesis and systematic investigations on th e structure, morphol- ogy, and electrochem...

Ngày tải lên: 20/06/2014, 23:20

... maximum of BeO is of lower energy than that of ZnO, while the conduction band minimum of BeO is of higher energy than that of ZnO [32]. In such case, a potential well for both electron and hole ... nature of BeO shell, which is composed of many island-shape grains with random orientations to the ZnO core. Accordingly, a rather rough edge of the BeO shell is observed. Magni...

Ngày tải lên: 21/06/2014, 00:20

... solution of 0.15 mL of tert-butylamine (1.43 mmol) dissolved in 14.5 mL of water was added to a 45-mL Teflon-lin ed steel autoclave. Separately, 0.225 g of titanium(IV) n-propoxide (0.792 mmol) and ... 0.75 g of stearic acid (2.64 mmol) were dis- solved in 14.5 mL of toluene and added to the autoclave without additional st irring. The autoclave was sealed and heated to 180°C...

Ngày tải lên: 21/06/2014, 03:20

... level shift toward the conduction band. Since intrinsic VO 2 thin film is of n-type, introduction of ion donors c ause an inevitable degradation of the transmittance (and resistivity) of the semiconducting ... derivative of both curves of the hysteresis loops (heating and cooling) and considering the mean value. Results and discussion Structural characterization The cryst...

Ngày tải lên: 21/06/2014, 04:20

... 120, and 180 min, respectively Fig. 7 a The decomposition of the PL spectrum of the SiNWs treated with HF and the PL intensity varieties of the elementary bands with b H 2 O 2 concentrations and ... properties of the porous SiNWs. Figure 6a and b display the PL spectrums of the porous SiNWs with different H 2 O 2 concentrations and etching Fig. 2 SEM and TEM images of...

Ngày tải lên: 21/06/2014, 08:20

... spectra of ZnO nanofibers, HfO 2 :Eu nanotubes, and ZnO/HfO 2 :Eu nanocables annealed at 600 and 700°C, respectively. It can be seen that the emission bands of the ZnO/HfO 2 :Eu nanocables consist of ... emission bands of the ZnO/HfO 2 :Eu nanocables originate from the combined action of the ZnO nanocores and Eu-doped HfO 2 shells. However, for the nanocables, though the positi...

Ngày tải lên: 21/06/2014, 17:20