CO-promoted polyethylene hydrogenolysis with renewable formic acid as hydrogen donor.

Hydrogenolysis has emerged as a promising strategy for the chemical recycling of plastic waste, yet its reliance on high-pressure hydrogen poses significant challenges. Biomass- or CO-derived formic acid (FA) is a renewable hydrogen carrier with the advantages of low toxicity and ease of storage and transport. Here, we use FA to replace high-pressure hydrogen to convert polyethylene (PE) into fuels and chemicals with only 4.

Tandem Catalysis to Mitigate Coke Formation in the Upcycling of Mixed Polyolefin Wastes.

Postconsumer plastic waste is commonly made up of various types of polymers, and the compositional heterogeneity complicates their recycling. A notable example is polyethylene/ethylene vinyl acetate (PE/EVA) blends, which are widely used as multilayer packaging materials, films, and cable coatings. Chemical recycling of PE/EVA blends often yields low-value short-chain alkanes, especially methane, and suffers from coke formation.

Polyethylene hydrogenolysis by dilute RuPt alloy to achieve H-pressure-independent low methane selectivity.

Chemical recycling of plastic waste could reduce its environmental impact and create a more sustainable society. Hydrogenolysis is a viable method for polyolefin valorization but typically requires high hydrogen pressures to minimize methane production. Here, we circumvent this stringent requirement using dilute RuPt alloy to suppress the undesired terminal C-C scission under hydrogen-lean conditions.

Home-Use and Portable Biofeedback Lowers Anxiety and Pain in Chronic Pain Subjects.

In this study, we investigated the use of novel, home-use and portable biofeedback devices in a remote program for managing chronic pain. In three separate 4-week pilot studies, participants engaged in twice-daily, 10-minute biofeedback sessions, with self-assessed reductions in anxiety and pain levels using the 6-item State-Trait Anxiety Inventory (STAI-6) and Visual Analogue Scale (VAS), respectively, in Studies 2 and 3. Among these 113 (Study 2) and 237 (Study 3) biofeedback sessions, 81 (∼72%) and 130 (∼55%) showed reductions in pain, while 93 (∼82%) and 184 (∼78%) experienced reductions in anxiety.

α-FeO mediated periodate activation for selective degradation of phenolic compounds via electron transfer pathway under visible irradiation.

Periodate (PI)-photoactivated advanced oxidation process (AOP) has recently received increasing attention for the removal of micropollutants from water. However, periodate is mainly driven by high-energy ultraviolet light (UV) in most cases, and few studies have extended it to the visible range. Herein, we proposed a new PI visible light activation system employing α-FeO as catalyst.

Hierarchical CuO/NiFeCo layered double hydroxide nanoarrays on copper foam obtained by a self-sacrificial templated route for a highly efficient oxygen evolution reaction.

The design of highly active, economical and highly stable electrocatalysts for the oxygen evolution reaction (OER) is very important for realizing sustainable energy conversion. Herein, a CuO/NiFeCo layered double hydroxide electrode on a copper foam (CF) with a nanoarray structure (CuO/NiFeCo LDH/CF) is fabricated by using Cu(OH) on CF (Cu(OH)/CF) as a self-sacrificial template. The prepared CuO/NiFeCo LDH/CF has a unique hierarchical nanostructure, high electrochemical active area and excellent integration of CuO and NiFeCo LDH, resulting in low overpotentials of 228 mV and 269 mV for current densities of 10 and 100 mA cm in 1 M KOH, respectively, as well as an ultrasmall Tafel slope of 40 mV dec.

Rational Regulation of Crystalline/Amorphous Microprisms-Nanochannels Based on Molecular Sieve (VSB-5) for Electrochemical Overall Water Splitting.

Rational regulation of the composition and structure of electrocatalysts is crucial to the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Herein, a new electrocatalyst of nickel phosphate microprism (VSB/NiPO) is developed via a simple solvothermal reaction. The microprism is mainly composed of Versailles-Santa Barbara-5 (VSB-5, molecular sieve) with unique nanochannels, which contribute to accelerating mass transfer and exposing more active sites, thus displaying excellent HER activity.

Ultrahigh electrocatalytic activity with trace amounts of platinum loadings on free-standing mesoporous titanium nitride nanotube arrays for hydrogen evolution reactions.

Minimizing Pt loadings on electrocatalysts for hydrogen evolution reactions (HERs) is essential for their commercial applications. Herein, free-standing mesoporous titanium nitride nanotube arrays (TiN NTAs) were fabricated to serve as a substrate for Pt loadings in trace amounts. TiN NTAs were prepared by thermal treatment of anodic TiO2 NTAs at 750 °C for 3 h in a NH3 atmosphere.