Homogeneous hollow Cu20 octahedral nanostructures have been fabricated by a facile onepot reduction reaction at roomtemperature. The microscope analysis revealed that the edges of as-prepared hollow structures were ar...
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Homogeneous hollow Cu20 octahedral nanostructures have been fabricated by a facile onepot reduction reaction at roomtemperature. The microscope analysis revealed that the edges of as-prepared hollow structures were around 200 nm with a wall thickness of about 20 nm. To investigate the influence factors and formation mechanism of the hollow octahedral structure, samples subjected to different reaction conditions were studies. The results showed that the morphology and structures of Cu20 particles were greatly affected by the concentration of pH value of the reaction environment and the reaction time. Ostwald ripening process is orooosed to exolain the growth mechanism of the hollow octahedral nanostructures.
The three dimensional profile for valence electron structure across the triple pocket junction in SrTiO3 ceramic has been quantitatively determined by analysis of spatially resolved low loss electron energy-loss spect...
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Aufgrund des zunehmenden Energiebedarfs und wachsender Umweltprobleme erfahren die Produktion von Solarbrennstoffen durch photokatalytische Wasserspaltung und die CO 2 ‐Reduktion mithilfe von Photokatalysatoren betr&...
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Aufgrund des zunehmenden Energiebedarfs und wachsender Umweltprobleme erfahren die Produktion von Solarbrennstoffen durch photokatalytische Wasserspaltung und die CO 2 ‐Reduktion mithilfe von Photokatalysatoren beträchtliches Interesse. In den letzten Jahren haben zahlreiche Studien gezeigt, dass die Effizienz der Photokatalysatoren für die Produktion von Solarbrennstoffen deutlich gesteigert werden kann, wenn man Graphen verwendet, das eine besondere konjugierte 2D‐Struktur und spezielle elektronischen Eigenschaften besitzt. Dieser Aufsatz gibt einen Überblick über jüngste Fortschritte bei der Anwendung von Photokatalysatoren auf Graphenbasis für die Produktion von Solarbrennstoffen einschließlich der CO 2 ‐Reduktion zu Kohlenwasserstoffen und der H 2 ‐Erzeugung mittels Wasserspaltung. Die Grundlagen der Wasserspaltung und der CO 2 ‐Reduktion werden kurz dargestellt. Die für die Verbesserung der photokatalytischen Leistung relevanten Funktionen des Graphens werden diskutiert. Mit Blick auf bestehende Herausforderungen und Möglichkeiten auf diesem vielversprechenden Gebiet werden schließlich mögliche Perspektiven erörtert.
TiO_(2)-rich Ba-Ti-O films were prepared on Pt/Ti/SiO_(2)/Si substrate by laser chemical vapor deposition(LCVD).Their phase relationship and microstructure were *** single-phase BaTi_(2)O_(5),Ba_(4)Ti_(13)O_(3)0 and B...
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TiO_(2)-rich Ba-Ti-O films were prepared on Pt/Ti/SiO_(2)/Si substrate by laser chemical vapor deposition(LCVD).Their phase relationship and microstructure were *** single-phase BaTi_(2)O_(5),Ba_(4)Ti_(13)O_(3)0 and BaTi_(5)O_(11) films were prepared at Ti/Ba molar ratios m_(Ti/Ba)=1.84-1.90,2.83 and 4.49-4.55,*** high deposition rate of TiO_(2)-rich Ba-Ti-O films ranged from 54.0μm/h to 177.6μm/*** permittivity of BaTi_(2)O_(5)film(prepared at m_(Ti/Ba)=1.84 and deposition temperature T_(dep)=877 K),Ba_(4)Ti_(13)O_(3)0 film(prepared at m_(Ti/Ba)=2.83 and T_(dep)=914 K)and BaTi5O11 film(prepared at m_(Ti/Ba)=4.49 and T_(dep)=955 K)were 50,40 and 21,respectively.
We investigate the optoelectronic properties of a carbon nanotube (CNT)-metal heterostructure in the terahertz range. On the basis of terahertz time-domain spectroscopy characterization of a double-walled CNT (DWNT) f...
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Putting metal atoms or metallic clusters into fullerenes has generated a new class of hybrid molecules, defined as endohedral metallofullerenes (EMFs), possessing novel structures and fascinating properties which are ...
Co and Cu doped MoS2 powders were fabricated by a exfoliation- intercalation-hydrothermal adulteration approach, used MoS2 as precursor. The samples were characterized by X-ray diffraction (XRD), scanning electron mic...
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Co and Cu doped MoS2 powders were fabricated by a exfoliation- intercalation-hydrothermal adulteration approach, used MoS2 as precursor. The samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and X-ray energy dispersion spectrum
TiO_(2) thin films were prepared on Pt/Ti/SiO_(2)/Si substrate by laser chemical vapor deposition(LCVD)*** effects of laser power(P_(L))and total pressure(p_(tot))on the microstructure of TiO_(2) thin films were *** d...
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TiO_(2) thin films were prepared on Pt/Ti/SiO_(2)/Si substrate by laser chemical vapor deposition(LCVD)*** effects of laser power(P_(L))and total pressure(p_(tot))on the microstructure of TiO_(2) thin films were *** deposition temperature(T_(dep))was mainly affected by P_(L),increasing with P_(L) *** single-phase rutile TiO_(2) thin films with different morphologies were *** morphologies of TiO_(2) thin films were classified into three typical types,including the powdery,Wulff-shaped and granular microstructures.p_(tot) and T_(dep) were the two critical factors that could be effectively used for controlling the morphology of the films.
Nest-like and multilayered-disk-like Bi2WO6 photocatalysts were synthesized through a hydrothermal strategy using thiourea and acetic acid as complexing agents. The nest-like Bi2WO6 showed excellent visible-light-driv...
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Nest-like and multilayered-disk-like Bi2WO6 photocatalysts were synthesized through a hydrothermal strategy using thiourea and acetic acid as complexing agents. The nest-like Bi2WO6 showed excellent visible-light-driven photocatalytic performance, and it could decompose rhodamine B（RhB） within 100 minutes. This excellent performance resulted from its special microstructure and the relatively large surface area.
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