Retraction: Phosphorus-Rich Colloidal Cobalt Diphosphide (CoP ) Nanocrystals for Electrochemical and Photoelectrochemical Hydrogen Evolution.

Adv. Mater. 2019, 31, 1900813.

Correction: Synthesis of lead-free CsSbBr perovskite alternative nanocrystals with enhanced photocatalytic CO reduction activity.

Correction for 'Synthesis of lead-free CsSbBr perovskite alternative nanocrystals with enhanced photocatalytic CO reduction activity' by Chang Lu , , 2020, , 2987-2991, https://doi.org/10.1039/C9NR07722G.

Scalable neutral HO electrosynthesis by platinum diphosphide nanocrystals by regulating oxygen reduction reaction pathways.

Despite progress in small scale electrocatalytic production of hydrogen peroxide (HO) using a rotating ring-disk electrode, further work is needed to develop a non-toxic, selective, and stable O-to-HO electrocatalyst for realizing continuous on-site production of neutral hydrogen peroxide. We report ultrasmall and monodisperse colloidal PtP nanocrystals that achieve HO production at near zero-overpotential with near unity HO selectivity at 0.27 V vs.

Synthesis of lead-free CsSbBr perovskite alternative nanocrystals with enhanced photocatalytic CO reduction activity.

A synthetic method for uniform and pure Cs3Sb2Br9 NCs has been developed. Cs3Sb2Br9 NCs exhibit a 10-fold increase in activity for the photocatalytic CO2 reduction reaction compared to CsPbBr3 NCs, achieving 510 μmol CO g-1 cat. after 4 h.

Colloidal silver diphosphide (AgP) nanocrystals as low overpotential catalysts for CO reduction to tunable syngas.

Production of syngas with tunable CO/H ratio from renewable resources is an ideal way to provide a carbon-neutral feedstock for liquid fuel production. Ag is a benchmark electrocatalysts for CO-to-CO conversion but high overpotential limits the efficiency. We synthesize AgP nanocrystals (NCs) with a greater than 3-fold reduction in overpotential for electrochemical CO-to-CO reduction compared to Ag and greatly enhanced stability.

Impact of Nb(V) Substitution on the Structure and Optical and Photoelectrochemical Properties of the Cu(TaNb )O Solid Solution.

A family of solid solutions, Cu(TaNb )O (0 ≤ x ≤ 0.4), was investigated as p-type semiconductors for their band gaps and energies and for their activity for the reduction of water to molecular hydrogen. Compositions from 0 to 40 mol % niobium were prepared in high purity by solid-state methods, accompanied by only very small increases in the lattice parameters of ∼0.

Phosphorus-Rich Colloidal Cobalt Diphosphide (CoP ) Nanocrystals for Electrochemical and Photoelectrochemical Hydrogen Evolution.

Developing earth-abundant and efficient electrocatalysts for photoelectrochemical water splitting is critical to realizing a high-performance solar-to-hydrogen energy conversion process. Herein, phosphorus-rich colloidal cobalt diphosphide nanocrystals (CoP NCs) are synthesized via hot injection. The CoP NCs show a Pt-like hydrogen evolution reaction (HER) electrocatalytic activity in acidic solution with a small overpotential of 39 mV to achieve -10 mA cm and a very low Tafel slope of 32 mV dec .

Interface Engineering of Colloidal CdSe Quantum Dot Thin Films as Acid-Stable Photocathodes for Solar-Driven Hydrogen Evolution.

Colloidal semiconductor quantum dot (CQD)-based photocathodes for solar-driven hydrogen evolution have attracted significant attention because of their tunable size, nanostructured morphology, crystalline orientation, and band gap. Here, we report a thin film heterojunction photocathode composed of organic PEDOT:PSS as a hole transport layer, CdSe CQDs as a semiconductor light absorber, and conformal Pt layer deposited by atomic layer deposition (ALD) serving as both a passivation layer and cocatalyst for hydrogen evolution. In neutral aqueous solution, a PEDOT:PSS/CdSe/Pt heterogeneous photocathode with 200 cycles of ALD Pt produces a photocurrent density of -1.

Colloidal Cobalt Phosphide Nanocrystals as Trifunctional Electrocatalysts for Overall Water Splitting Powered by a Zinc-Air Battery.

Highly efficient and stable electrocatalysts, particularly those that are capable of multifunctionality in the same electrolyte, are in high demand for the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR). In this work, highly monodisperse CoP and Co P nanocrystals (NCs) are synthesized using a robust solution-phase method. The highly exposed (211) crystal plane and abundant surface phosphide atoms make the CoP NCs efficient catalysts toward ORR and HER, while metal-rich Co P NCs show higher OER performance owing to easier formation of plentiful Co P@COOH heterojunctions.