Impact of Virtual Operating Room Tours on Relieving Perioperative Anxiety in Adult Patients: A Systematic Review.

Purpose: To evaluate the effects of virtual operating room tours on perioperative anxiety in adult patients.

Design: This study was a systematic review of randomized controlled trials (RCTs).

Methods: PubMed, Cochrane Library, Embase, Web of Science, Proquest, Scopus, SinoMed, CNKI, and WanFang were systematically searched for English and Chinese RCTs published up to November 18, 2021, for studies on the effectiveness of virtual operating room tours in reducing perioperative anxiety in adult patients (>18 years of age).

Self-Activated Catalytic Sites on Nanoporous Dilute Alloy for High-Efficiency Electrochemical Hydrogen Evolution.

Design and synthesis of effective electrocatalysts for hydrogen evolution reaction (HER) in wide pH environments are critical to reduce energy losses in water electrolyzers. Here, by using a self-activation strategy, we construct an atomic nickel (Ni) decorated nanoporous iridium (Ir) catalyst, which can create the reaction-favorable chemical environment and maximize the electrochemical active surface area (ECSA), enabling efficient HER over a wide pH range. By using X-ray absorption spectroscopy and theoretical calculations, the atomic Ni sites are identified as the synergistic sites, which not only accelerate the water dissociation under operation conditions but also activate the surface Ir sites thus leading to the efficient H generation.

Dynamic active-site generation of atomic iridium stabilized on nanoporous metal phosphides for water oxidation.

Designing efficient single-atom catalysts (SACs) for oxygen evolution reaction (OER) is critical for water-splitting. However, the self-reconstruction of isolated active sites during OER not only influences the catalytic activity, but also limits the understanding of structure-property relationships. Here, we utilize a self-reconstruction strategy to prepare a SAC with isolated iridium anchored on oxyhydroxides, which exhibits high catalytic OER performance with low overpotential and small Tafel slope, superior to the IrO.