This review focuses on the morphology control, enhancement strategies of photocatalytic activity and applications of WO₃-based photocatalysts.

This study provides a novel approach to design efficient WO₃ photocatalysts decorated by bimetallic Pt–Ag alloy nanoparticles.

A new two-photon fluorescent probe (MCN) for viscosity imaging was developed based on a 6-substituted quinoline framework. MCN showed an excellent “off–on” fluorescence response (ca. 90-fold enhancement) with viscosity increasing in the glycerol–water viscosity system. MCN showed great sensitivity to viscosity (R² = 0.98, x = 0.65), which gave rise to cell imaging for micro-viscosity or real-time cell imaging during apoptosis with low cytotoxicity under two-photon excitation (λ_ex = 800 nm). Fluorescence lifetime imaging (FLIM) of living HeLa cells stained with MCN revealed that the intracellular average viscosity value was 73.45 ± 21.55 cP in cytosol. Imaging in living tissue slices indicated that MCN can work in deep tissue (∼130 μM) under two-photon excitation. Moreover, MCN also showed the capacity for in vivo imaging viscosity in zebrafish with obvious fluorescence emission.

Silicon anodes have been extensively studied as a potential alternative to graphite ones for Li-ion batteries. However, their commercial application is limited by the issues of the poor structural and interfacial stability. In this regard, one of the key strategies for fully exploiting the capacity potential of Si-based anodes is to design robust conductive binder networks. Although the amount of binder in the electrode is small, it is, however, considered as a critical component of Si-based anodes for Li-ion batteries. In this review, a brief summary is given from the structural and functional aspects of the existing binders for Si anodes. In particular, three-dimensional and multifunctional polymeric binders with excellent electrical conductivity, flexibility, and adhesion prepared by chemical bonding, electrostatic and coordination interactions have become the focus of research, and are expected to accelerate the practical application of silicon anodes. Lastly, some suggestions for the future development of Si anodic binders are put forward.