A challenge in photocatalysis consists in improving the efficiency by harnessing a large portion of the solar spectrum. We report the design and realization of a robust molecular-semiconductor photocatalytic system (MSPS) consisting of an earth-abundant phytic acid nickel (PA-Ni) biomimetic complex and polymeric carbon nitride (PCN). The MSPS exhibits an outstanding activity at l = 940 nm with high apparent quantum efficiency (AQE) of 2.8 %, particularly l > 900 nm, as it outperforms all reported state-of-the-art nearinfrared (NIR) hybrid photocatalysts without adding any noble metals. The optimum hydrogen (H 2) production activity was about 52 and 64 times higher with respect to its pristine counterpart under the AM 1.5 G and visible irradiation, respectively, being equivalent to the platinum-assisted PCN. This work sheds light on feasible avenues to prepare highly active, stable, cheap NIR-harvesting photosystems toward sustainable and scalable solar-to-H 2 production.
Low-concentration PV (CPV, concentrating photovoltaic) technology is a promising concept because it can work with the fixed installation. However, besides the economic consideration, the environmental impacts of the CPV module throughout its life cycle should be addressed as compared with the flat PV technology. Thus, in this paper, a novel high optical performance low-concentration concentrator namely asymmetric compound parabolic concentrator (aCPC) for building south wall integration is proposed. And based on the proposed aCPC-PV module, a life cycle assessment (LCA) has been performed for the low-concentration PV in China to make a scientific comparison with the PV module with the same output level environmentally. Several environmental indicators are calculated for Beijing, Hefei, Lhasa, Lanzhou, Harbin. The primary energy demand, energy payback time and environmental impacts *Revised Manuscript with No Changes Marked 2 are considered over the entire life cycle of the aCPC-PV module. The results show that the primary energy demand, energy payback time and environmental impacts of the aCPC-PV module are all relatively lower than that of the PV module with the same output. It is confirmed by the LCA study that the aCPC-PV module on behalf of the low-concentration PV technology is still a feasible and effective way for actual engineering because it's more economic and more environmental friendly than the PV technology although the PV is experiencing continuous decrease in price and increase in efficiency.
A series of silver compounds of empirical formula (b-diketanato)Ag(BTMSA) (where BTMSA is bis(trimethylsilyl)acetylene) were prepared from reactions of Ag 2 O with b-diketone in the presence of BTMSA. All these compounds were characterized by elemental analyses, nuclear magnetic resonance (NMR), and infrared (IR) spectroscopic methods. X-ray diffraction (XRD) analysis of the crystal structure of (Btfac)Ag(BTMSA) shows a monomeric silver species in the solid state. Hot-wall CVD experiments revealed that pure silver thin films can be deposited by using (hfac)Ag(BTMSA) as the precursor in the temperature range 150±250 C.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.