Catalyst design for the efficient CO2 reduction reaction (CO2RR) remains a crucial challenge conversion of to fuels. Natural Ni–Fe carbon monoxide dehydrogenase (NiFe-CODH) achieves reversible and CO at nearly thermodynamic equilibrium potential, which provides template developing CO2RR catalysts. However, compared with natural enzyme, most biomimetic synthetic complexes exhibit negligible catalytic activities, emphasizes significance effective bimetallic cooperation activation. Enlightened...

Abstract Herein, we report the importance of structure regulation on O−O bond formation process in binuclear iron catalysts. Three complexes, [Fe 2 (μ‐O)(OH ) (TPA) ] 4+ ( 1 ), (6‐HPA)] and (BPMAN)] 3 have been designed as electrocatalysts for water oxidation 0.1 M NaHCO solution (pH 8.4). We found that are molecular catalysts proceeds via oxo–oxo coupling rather than by nucleophilic attack (WNA) pathway. In contrast, complex displays negligible catalytic activity. DFT calculations suggested...

Direct activation of O–H bond in water via hydrogen atom transfer (HAT) reactions is a challenge because its high dissociation energy. In this work, strong abstracting reagent (pyridine-N-oxyl radical cation: Py+-O•) was generated by an electrochemical method, and intermediate could trigger catalytic oxidation two-electron pathway to H2O2 under metal-free conditions.

Water splitting is one of the most promising solutions for storing solar energy in a chemical bond. oxidation still bottleneck step because its inherent difficulty and limited understanding O-O bond formation mechanism. Molecular catalysts provide platform this process depth have received wide attention since first Ru-based catalyst was reported 1982. RuV =O considered key intermediate to initiate through either water nucleophilic attack (WNA) pathway or bimolecular coupling (I2M) pathway....

The selective reduction of carbon dioxide remains a significant challenge due to the complex multielectron/proton transfer process, which results in high kinetic barrier and production diverse products. Inspired by electrostatic H-bonding interactions observed second sphere [NiFe]-CODH enzyme, researchers have extensively explored these regulate proton transfer, stabilize intermediates, ultimately improve performance catalytic CO2 reduction. In this work, series cobalt(II)...

We report herein the first nonheme CuFe oxygen reduction catalyst ([CuII (bpbp)(μ-OAc)2 FeIII ]2+ , CuFe-OAc), which serves as a functional model of cytochrome c oxidase and can catalyze to water with turnover frequency 2.4×103 s-1 selectivity 96.0 % in presence Et3 NH+ . This performance significantly outcompetes its homobimetallic analogues (2.7 CuCu-OAc %H2 O2 98.9 %, inactive FeFe-OAc) under same conditions. Structure-activity relationship studies, combination density theory calculation,...

Abstract Water splitting is one of the most promising solutions for storing solar energy in a chemical bond. oxidation still bottleneck step because its inherent difficulty and limited understanding O−O bond formation mechanism. Molecular catalysts provide platform this process depth have received wide attention since first Ru‐based catalyst was reported 1982. Ru V =O considered key intermediate to initiate through either water nucleophilic attack (WNA) pathway or bimolecular coupling (I2M)...

This paper has analyzed the efficiency and factors of Chinese university science parks using DEA-Tobit model by cross-section data in 2008. The results show: 21 are inefficient DMUs, amongst 16 them ineffective vrste, five scale. To improve parks, former should start with namely they maximize outputs appropriate inputs. latter scale, changing production Tobit analysis indicates that personnel quality, fund intensity is positively related to crste respectively R&D area ratio negatively crste....

Abstract Herein, we report the importance of structure regulation on O−O bond formation process in binuclear iron catalysts. Three complexes, [Fe 2 (μ‐O)(OH ) (TPA) ] 4+ ( 1 ), (6‐HPA)] and (BPMAN)] 3 have been designed as electrocatalysts for water oxidation 0.1 M NaHCO solution (pH 8.4). We found that are molecular catalysts proceeds via oxo–oxo coupling rather than by nucleophilic attack (WNA) pathway. In contrast, complex displays negligible catalytic activity. DFT calculations suggested...

Nuclear heating reactor is a new type of power plant that uses nuclear energy as heat source. Low temperature should be the forerunner and main force for developing in China. Due to lower water required by system, this dedicated, non-power generating works at low temperatures pressures with inherent safety features. The design, construction operation reactors various countries world were reviewed paper, China’s demonstration project NHR-200 low-temperature which would used was discussed...

Abstract We report herein the first nonheme CuFe oxygen reduction catalyst ([Cu II (bpbp)( μ ‐OAc) 2 Fe III ] 2+ , CuFe−OAc ), which serves as a functional model of cytochrome c oxidase and can catalyze to water with turnover frequency 2.4×10 3 s −1 selectivity 96.0 % in presence Et NH + . This performance significantly outcompetes its homobimetallic analogues (2.7 CuCu−OAc %H O 98.9 %, inactive FeFe−OAc ) under same conditions. Structure‐activity relationship studies, combination density...

Metacomputing system is a kind of heterogeneous and dynamic distributed computing in WAN (Wide Area Network). Communication model metasystems must tackle the problems, has ability to pass messages WAN. After analyzing characteristics deficiencies common methods, this paper proposes new communication for metasystems. This based on Java, whose platform independence data serialization hide heterogeneity various nodes WAN; its multi-protocol mechanism-association TCP protocol UDP...