Remarkable Enhancement of Photocatalytic Activity of High-Energy TiO Nanocrystals for NO Oxidation through Surface Defluorination.

The superior photocatalytic activity of TiO nanocrystals with exposed high-energy (001) facets, achieved through the use of hydrofluoric acid as a shape-directing reagent, is widely reported. However, in this study, we report for the first time the detrimental effect of surface fluorination on the photoreactivity of high-energy faceted TiO nanocrystals towards NO oxidation (resulting in a NO removal rate of only 5.9%).

Hollow carbon-based materials for electrocatalytic and thermocatalytic CO conversion.

Electrocatalytic and thermocatalytic CO conversions provide promising routes to realize global carbon neutrality, and the development of corresponding advanced catalysts is important but challenging. Hollow-structured carbon (HSC) materials with striking features, including unique cavity structure, good permeability, large surface area, and readily functionalizable surface, are flexible platforms for designing high-performance catalysts. In this review, the topics range from the accurate design of HSC materials to specific electrocatalytic and thermocatalytic CO conversion applications, aiming to address the drawbacks of conventional catalysts, such as sluggish reaction kinetics, inadequate selectivity, and poor stability.

Synergistic effect of cyano defects and CaCO in graphitic carbon nitride nanosheets for efficient visible-light-driven photocatalytic NO removal.

Photo-oxidation with semiconductor photocatalysts provides a sustainable and green solution for NO elimination. Nevertheless, the utilization of traditional photocatalysts in efficient and safe photocatalytic NO removal is still a challenge due to the slow charge kinetic process and insufficient optical absorption. In this paper, we report a novel porous g-CN nanosheet photocatalyst modified with cyano defects and CaCO (xCa-CN).

Improved speckle contrast optical coherence tomography angiography.

Optical coherence tomography (OCT) is becoming a clinically useful and important imaging technique due to its ability to provide high-resolution structural imaging . Optical coherence tomography angiography (OCTA) can visualize vasculature imaging of biological tissues. With the advent of Fourier-domain OCT, numerous OCTA techniques have been developed to detect the microvasculature in vivo.