2022年4月15日 · Cuprous oxide (Cu 2 O) is a promising photocatalyst that can reduce CO 2 to fuel under visible light irradiation. However, the fast electron-hole recombination and photo-corrosion of Cu 2 O limit its photocatalytic performance. In order to overcome these two shortcomings of Cu 2 O, in this work, three-dimensional (3D) porous Cu 2 O with dendrite structure was prepared by electrodeposition ...

2024年7月1日 · The high surface area of CO 2 RR catalysts can considerably reduce the overpotential and enhance the selectivity for the target product [26].Ping and co-workers synthesized porous carbon nanocage embedded with single Ni atom as CO 2 RR catalysts and obtained the ultrahigh FE (∼95 %) for producing CO [27].CO 2 are facilely enriched in the cage and significantly improve the local concentration ...

2015年5月6日 · Shape-controllable porous, hollow metal oxide cages are attracting more and more attention due to their widespread applications. In this paper, octahedral, truncated octahedral and cubic Cu2O/CuO cages were successfully fabricated by the thermal decomposition of the polyhedral crystals of Cu-based metal–orga

2024年4月3日 · The success of electrochemical CO2 reduction at high current densities hinges on precise interfacial transportation and the local concentration of gaseous CO2. However, the creation of efficient CO2 transportation channels remains an unexplored frontier. In this study, we design and synthesize hydrophobic porous Cu2O spheres with varying pore sizes to unveil the nanoporous channel’s impact ...

In order to clarify the porous nanoparticle formation, we conducted a EDX line scan to the final hollow nanoparticles, ... (Au NBP@Cu2O) composite photocatalyst, with adjustable aspect ratio of Au NBP core and thickness of Cu2O shell. The Au NBP@Cu2O products possess tunable light absorption from visible to near-IR region and all of them ...

2023年11月15日 · In this paper, porous Cu 2 O hollow nanospheres (Cu 2 O-HNSs) were facilely synthesized through a template-free one-pot wet-chemical method. Systematical investigations found that Cu 2 O-HNSs with many cavities on the shell were formed from porous Cu 2 O nanospheres through Ostwald ripening. The concentration of NH 2 OH∙HCl and pH value play critical roles. . Compared to Cu powder, Cu 2 O ...

2025年1月20日 · Copper-based catalysts demonstrate distinctive multicarbon product activity in the CO2 electroreduction reaction (CO2RR); however, their low selectivity presents significant challenges for practical applications. Herein, we have developed a multilevel porous spherical Cu2O structure, wherein the mesopores are enriched with catalytic active sites and effectively stabilize Cu+, while the ...

2013年12月5日 · Porous cuprous oxide (Cu 2 O) nanospheres composed of small nanoparticles with diameters at 10~20 nm were successfully synthesized without surfactant at room temperature within 5 min. The products were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED ...

2018年4月6日 · A facile strategy is presented to form 3D porous Cu@Cu 2 O aerogel networks by self-assembling Cu@Cu 2 O nanoparticles with the diameters of ca. 40 nm for constructing catalytic interfaces. Unexpectedly, the prepared Cu@Cu 2 O aerogel networks display excellent electrocatalytic activity to glucose oxidation at a low onset potential of ca. 0.25 V. . Moreover, the Cu@Cu 2 O aerogels also can act ...

2012年6月27日 · Cu2O p-type semiconductor hollow porous microspheres have been prepared by using a simple soft-template method at room temperature. The morphology of as-synthesized samples is hollow spherical structures with the diameter ranging from 200 to 500 nm, and the surfaces of the spheres are rough, porous and with lots of channels and folds. The photocatalytic activity of degradation of methyl orange ...