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Rehabilitation is necessary for the recovery of patients with paralysis caused by stroke and muscle atrophy. Wearable electronics can provide feedback on physical training and facilitate healthcare. However, most existing wearable electronics are difficult to maintain a conformal skin‐device interface. Additionally, the use of non‐degradable electronic materials is associated with environmental risks. Herein, ionogels with biodegradation and shape‐memory properties as eco‐friendly and geometry‐adaptive wearable electronics for rehabilitation are proposed. The biodegradation is enabled by incorporating polycaprolactone segments into the ionogel matrix. Moreover, the ionogel‐based wearable electronics can be conformal to certain joints by shape programming, and provide stable and reproducible real‐time signals reflecting joint movements during long‐term rehabilitation training assisted by a robotic glove, facilitating carers to assess rehabilitation efficacy and choose an appropriate scheme. This study demonstrates the potential of biodegradable shape‐memory ionogels as green and adaptive wearable electronics for robot‐assisted rehabilitation. [ABSTRACT FROM AUTHOR]

Hydrogen is widely believed to be a promising fuel to solve the global energy crisis and environmental issues. The catalytic system represented by metal‐supported catalysts is an important process of upgrading the hydrogen source in industry. Single‐atom catalysts (SACs), which inherit the advantages of homogeneous and heterogeneous catalysts, provide a broad prospect for low‐cost H2 production technology. This review focuses on the potential mechanisms in the rational design of SACs, including active sites, coordination configuration, mass loading, heteroatom‐doping, and metal−support interaction. The design strategies of single metal atoms on different supports are reviewed to give a proposal on how to immobilize the atomic active sites and modulate the geometric/electronic structures of SACs. Subsequently, the synergistic effect in SACs and the dynamic evolution of the atomically dispersed heterometal catalysts are introduced, aiming to provide further guidelines for H2 evolution SACs. H2 generation from the water−gas shift reaction and electro‐/photocatalytic water splitting are the main research directions at present. The latest progress of SACs employed in these applications is thoroughly reviewed. At the end of this review, personal perspectives on the prospects and challenges of H2 evolution SACs are put forward, hoping to promote the rapid development of SACs toward superior H2 evolution performance. [ABSTRACT FROM AUTHOR]

In this paper, sediment microbial fuel cell (SMFC) with nano‐Fe2O3 modified anode was investigated to enhance in‐situ remediation. Results showed that the modification led to higher removal of total organic matter (TOC) after 50 days. Anodic microbial community was further analyzed. It was found that the decrease of relative abundance of exoelectrogens and the suppression of methanogens led to the reduction of the power generation in SMFC with modified anode. Longilinea was one of key bacteria regarding TOC degradation. Besides, potential environmental effects resulting from SMFC and nano‐Fe2O3 modification were also discussed. The competition of exoelectrogens with methanogens for nutrient potentially resulted in the reduction of methane emission. The SMFC system could inhibit the growth of fecal bacteria and the nano‐Fe2O3 modified anode had stronger inhibitory effect, which further reduce the risks induced by fecal bacteria to human health. The modification could further maintain the biodiversity of eucaryon and achieve higher ecosystem stability. [ABSTRACT FROM AUTHOR]