Photoredox-Promoted Co-Production of Dihydroisoquinoline and H O over Defective Zn In S.

One of the most sustainable and promising approaches for hydrogen peroxide (H O ) production in a low-cost and environment-friendly way is photosynthesis, which, however, suffers from poor carrier utilization and low H O productivity. The addition of proton donors such as isopropanol or ethanol can increase H O production, which, unfortunately, will inevitably elevate the entire cost while wasting the oxidizing power of holes (h ). Herein, the tetrahydroisoquinolines (THIQs) is employed as a distinctive proton donor for the thermodynamically feasible and selective semi-dehydrogenation reaction to highly valuable dihydroisoquinolines (DHIQs), and meanwhile, to couple with and promote H O generation in one photoredox reaction under the photocatalysis by dual-functional Zn In S photocatalyst.

MnO Electrocatalysts Coordinating Alcohol Oxidation for Ultra-Durable Hydrogen and Chemical Productions in Acidic Solutions.

Electrocatalytic hydrogen production under acidic conditions is of great importance for industrialization in comparison to that in alkaline media, which, unfortunately, still remains challenging due to the lack of earth-abundant, cost-effective and highly active anodic electrocatalysts that can be used durably under strongly acidic conditions. Here we report an unexpected finding that manganese oxide, a kind of common non-noble catalysts easily soluble in acidic solutions, can be applied as a highly efficient and extremely durable anodic electrocatalyst for hydrogen production from an acidic aqueous solution of alcohols. Particularly in a glycerol solution, a potential of as low as 1.

Formic Acid Electro-Synthesis by Concurrent Cathodic CO Reduction and Anodic CH OH Oxidation.

The electrochemical conversion of carbon dioxide into energy-carrying compounds or value-added chemicals is of great significance for diminishing the greenhouse effect and the efficient utilization of carbon-dioxide emissions, but it suffers from the kinetically sluggish anodic oxygen evolution reaction (OER) and its less value-added production of O . We report a general strategy for efficient formic-acid synthesis by a concurrent cathodic CO reduction and anodic partial methanol-oxidation reaction (MOR) using mesoporous SnO grown on carbon cloth (mSnO /CC) and CuO nanosheets grown on copper foam (CuONS/CF) as cathodic and anodic catalysts, respectively. Anodic CuONS/CF enables an extremely lowered potential of 1.

Electrocatalytic Hydrogen Production Trilogy.

H production via water electrolysis is of great significance in clean energy production, which, however, suffers from the sluggish kinetics of the anodic oxygen evolution reaction (OER). Moreover, the anode product, O , which is of rather low value, may lead to dangerous explosions and the generation of membrane-degrading reactive oxygen species. Herein, to address these issues of electrocatalytic H production, we summarize the most recent advances in three stages based on the benefit increments and various electron donation routes, which are: 1) electron donation by traditional OER: developing efficient catalysts for water oxidation to promote H production; 2) electron donation by the oxidation of sacrificial agents: using sacrificial agents to assist H production; 3) electron donation by electrosynthesis reaction: achieving electrosynthesis in parallel with cathodic H production.

Sleep heart rate variability assists the automatic prediction of long-term cardiovascular outcomes.

Objective: We aimed to investigate the association between sleep HRV and long-term cardiovascular disease (CVD) outcomes, and further explore whether HRV features can assist the automatic CVD prediction.

Methods: We retrospectively analyzed polysomnography (PSG) data obtained from 2111 participants in the Sleep Heart Health Study, who were followed up for a median of 11.8 years after PSG acquisition.

Nickel-molybdenum nitride nanoplate electrocatalysts for concurrent electrolytic hydrogen and formate productions.

Hydrogen production by electrocatalytic water splitting is an efficient and economical technology, however, is severely impeded by the kinetic-sluggish and low value-added anodic oxygen evolution reaction. Here we report the nickel-molybdenum-nitride nanoplates loaded on carbon fiber cloth (Ni-Mo-N/CFC), for the concurrent electrolytic productions of high-purity hydrogen at the cathode and value-added formate at the anode in low-cost alkaline glycerol solutions. Especially, when equipped with Ni-Mo-N/CFC at both anode and cathode, the established electrolyzer requires as low as 1.

Metal-Organic Framework Nanosheet Electrocatalysts for Efficient H Production from Methanol Solution: Methanol-Assisted Water Splitting or Methanol Reforming?

Hydrogen (H) is presently one of the most promising clean and renewable energy sources, but the conventional hydrogen production by electrochemical water-splitting, though of great potential and extensively studied, is seriously obstructed especially by the anodic oxygen evolution reaction because of its sluggish kinetics. Herein, we report the efficient hydrogen production from methanol solution using facile-synthesized ultrathin 2D bi-metal-organic framework nanosheets (UMOFNs) as a precious metal-free anodic catalyst. The prepared UMOFNs showed a much lowered anodic potential of 1.