Pyrolysis Free Out-of-Plane Co-Single Atomic Sites in Porous Organic Photopolymer Stimulates Solar-Powered CO Fixation.

Herein, a facile strategy is illustrated to develop pyrolysis-free out-of-plane coordinated single atomic sites-based M-POP via a one-pot Friedel Craft acylation route followed by a post-synthetic metalation. The optimized geometry of the Co@BiPy-POP clearly reveals the presence of out-of-plane Co-single atomic sites in the porous backbone. This novel photopolymer Co@BiPy-POP shows extensive π-conjugations followed by impressive light harvesting ability and is utilized for photochemical CO fixation to value-added chemicals.

Tweaking Photo CO Reduction by Altering Lewis Acidic Sites in Metalated-Porous Organic Polymer for Adjustable H /CO Ratio in Syngas Production.

Herein, we have specifically designed two metalated porous organic polymers (Zn-POP and Co-POP) for syngas (CO+H ) production from gaseous CO . The variable H /CO ratio of syngas with the highest efficiency was produced in water medium (without an organic hole scavenger and photosensitizer) by utilizing the basic principle of Lewis acid/base chemistry. Also, we observed the formation of entirely different major products during photocatalytic CO reduction and water splitting with the help of the two catalysts, where CO (145.

Selective Metal-Free CO Photoreduction in Water Using Porous Nanostructures with Internal Molecular Free Volume.

The conversion of CO to a sole carbonaceous product using photocatalysis is a sustainable solution for alleviating the increasing levels of CO emissions and reducing our dependence on nonrenewable resources such as fossil fuels. However, developing a photoactive, metal-free catalyst that is highly selective and efficient in the CO reduction reaction (CORR) without the need for sacrificial agents, cocatalysts, and photosensitizers is challenging. Furthermore, due to the poor solubility of CO in water and the kinetically and thermodynamically favored hydrogen evolution reaction (HER), designing a highly selective photocatalyst is challenging.

Wurtzite CuGaS with an In-Situ-Formed CuO Layer Photocatalyzes CO Conversion to Ethylene with High Selectivity.

We present surface reconstruction-induced C-C coupling whereby CO is converted into ethylene. The wurtzite phase of CuGaS undergoes in situ surface reconstruction, leading to the formation of a thin CuO layer over the pristine catalyst, which facilitates selective conversion of CO to ethylene (C H ). Upon illumination, the catalyst efficiently converts CO to C H with 75.

Intrinsic Charge Polarization in Bi S Cl Nanorods Promotes Selective CC Coupling Reaction during Photoreduction of CO to Ethanol.

Obtaining multi-carbon products via CO  photoreduction is a major catalytic challenge involving multielectron-mediated CC bond formation. Complex design of multicomponent interfaces that are exploited to achieve this chemical transformation, often leads to untraceable deleterious changes in the interfacial chemical environment affecting CO  conversion efficiency and product selectivity. Alternatively, robust metal centers having asymmetric charge distribution can effectuate CC coupling reaction through the stabilization of intermediates, for desired product selectivity.

Morphology-Tuned Pt Ge Accelerates Water Dissociation to Industrial-Standard Hydrogen Production over a wide pH Range.

The discovery of novel materials for industrial-standard hydrogen production is the present need considering the global energy infrastructure. A novel electrocatalyst, Pt Ge, which is engineered with a desired crystallographic facet (202), accelerates hydrogen production by water electrolysis, and records industrially desired operational stability compared to the commercial catalyst platinum is introduced. Pt Ge-(202) exhibits low overpotential of 21.

Activating oxygen deficient TiO in the visible region by BiMoO for CO photoreduction to methanol.

Fast photogenerated charge recombination and inappropriate bandgap for visible light driven charge generation hinders the performance of TiO. In this study, TiO was activated for visible light driven CO reduction in the presence of BiMoO as an electron donor. Furthermore, the introduction of oxygen vacancies resulted in enhanced CO adsorption and conversion.