Báo cáo hóa học: " Solar light-driven photocatalytic hydrogen evolution over ZnIn2S4 loaded with transition-metal sulfides" pptx

... 22 0 ZnIn2S4 Ag2S /ZnIn2S4 SnS /ZnIn2S4 CoS /ZnIn2S4 CuS /ZnIn2S4 NiS /ZnIn2S4 Rate of h y dro g en evolution / Pmolxh -1 MnS /ZnIn2S4 Figure 1 Average rates of H 2 evolution. The average rates of H 2 evolution ... 2000, 85:543. doi:10.1186/1556-276X-6-290 Cite this article as: Shen et al.: Solar light-driven photocatalytic hydrogen evolution over ZnIn 2 S 4 loaded...

Ngày tải lên: 21/06/2014, 04:20

... provided. As known from FTIR and XPS results, a surface coverage with silicon oxide can be excluded. Therefore, we suppose that the surface is covered with both monolayer as well as bilayer of acrylic ... the TEM image clearly shows that each particle is covered with an individual shell of approximately 1 nm in diameter. The particles are coated with a thin dense layer which rema...

Ngày tải lên: 21/06/2014, 17:20

... [9]orwithafraction of repeated information bits [10]. The cooperative relaying schemes in [2–11] only consider a simple scenario with a source, a relay, and a destination; all are equipped with ... (i.e., the direct transmission with 64-QAM in [9] is obviously worse than that with 8-PSK). Figure 8 shows the performance curves of the inves- tigated schemes with better quality interus...

Ngày tải lên: 21/06/2014, 22:20

... 5:28 http://www.occup-med.com/content/5/1/28 Page 3 of 3 Profile of hydrogen sulfide Hydrogen sulfide is a colorless, hydrosoluble and toxic gas with a “rotten egg” smell. This gas is also flammable and ... make compre- hensive plans about how to deal with victims. This fad spread rapidly by internet communication, and can hap- pen anywhere in the world with chemicals readily avail-...

Ngày tải lên: 20/06/2014, 00:20

... ambience with the addition of hydrogen, sulfur in CdS may be pre- vented to oxidize, and V s ? in the CdS samples may decrease and even disappear. Therefore, we think that the addition of hydrogen ... synthetic methods to prepare 1D II-VI semiconductors with high- quality optical property. In this paper, we utilize the hydrogen- assisted thermal evaporation method, with which Jiang...

Ngày tải lên: 22/06/2014, 00:20

... be due to that the ZnO nanowires with the thin ZnO buffer layer (*300–500 nm) had higher aspect ratios (*55–79) compared with that (*39–48) of the ZnO nanowires with *0.8–1 lm of the ZnO buffer ... nanowire-based DSSCs, compared with the ZnO nanowire-based DSSCs without a compact TiO 2 buffer layer, the photovoltaic conversion efficiency and open circuit voltage of the ZnO DSSCs with...

Ngày tải lên: 22/06/2014, 00:20

... rapid nonlinear growth of binding energy with B. The binding energy of a hydrogen- like impurity in a thin size-quantized wire of InSb/GaAs semiconductors [27] with Kane’s dispersion law has been calculated ... [18–22] are carried out within the framework of the effective-mass approximation for the semiconductor QWW with parabolic bands. The calcula- tions of the binding energy of the...

Ngày tải lên: 22/06/2014, 18:20

... Electron structure of a silicon quantum dot doped with a shallow hydrogen- like donor has been cal- culated for the electron states above the optical gap. Within the framework of the envelope-function ... silicon quantum dot with a lithium donor that may be treated as a shallow hydrogenic one. We shall also discuss an effect of degeneracy removal caused by the presence of a hydrogenlike...

Ngày tải lên: 22/06/2014, 18:20

... essential tremor, a bilateral overactivity of cerebellar connections is strongly sus- pected, with increased synchronous discharges in the olivocerebellar tracts and overall disinhibition of cerebel- lar ... inhibition is reduced by an increased excitability within the reciprocally innervated neurons themselves. In other words, increased neural excitability can overcome the effects of norma...

Ngày tải lên: 18/06/2014, 15:20

... Treatment of enterocutaneous fis- tula in Crohn's Disease with adipose-derived stem cells: a comparison of protocols with and without cell expansion. Int J Colorectal Dis 2009, 24:27-30. 3. ... con- taminations associated with ex vivo cellular expansion, a simpler procedure would be the use of primary adipose tissue derived cells for therapy. Indeed it is reported that over 3000...

Ngày tải lên: 18/06/2014, 15:20