Hydrophilic/Hydrophobic Composite Catalysts to Enhance Contact-Electro-Catalytic Performance of Polytetrafluoroethylene.

The strong hydrophobicity of polytetrafluoroethylene (PTFE) restricts its effective interaction with aqueous media, thereby hindering its contact-electro-catalytic (CEC) performance. Herein, an effective strategy is proposed to enhance CEC efficiency by developing hydrophobic/hydrophilic composites. This approach not only improves hydrophilicity to facilitate solid-liquid contact-electrification (CE) but also leverages solid-solid CE, significantly boosting the CEC activity of PTFE.

Bringing Porous Framework Materials toward Photocatalytic HO Production.

Photocatalytic HO production driven by renewable solar energy is a promising and sustainable approach, with porous framework materials such as metal-organic frameworks (MOFs), covalent organic frameworks (COFs), and hydrogen-bonded organic frameworks (HOFs) emerging as highly efficient catalysts. This Review first presents the current research state of porous framework materials in HO photosynthesis, focusing on the progress in HO production across different porous frameworks and mechanism insights gained through advanced techniques. Furthermore, a systematic categorization of material modifications aimed at enhancing the photocatalytic efficiency is provided, linking structural modifications to improved HO production performance.

Molecule self-assembly of hydrangea-shaped hollow O, Cl -codoped graphite-phase carbon nitride microspheres for efficient N-(1,3-dimethyl butyl)-N'-phenyl-p-phenylenediamine quinone photodegradation and bacteria disinfection.

6PPD-quinone (6PPD-Q) as a derivative of the rubber antioxidant N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine (6PPD), is attracting intensive attention due to the significant hazard to ecosystems. However, the effective management of this type of contaminant has been scarcely reported. Hydrangea-like hollow O, Cl-codoped graphite-phase carbon nitride microspheres (HHCN), featuring open pores were readily prepared by molecular self-assembly and utilized to address 6PPD-Q in an aqueous system for the first time.

An Emerging Family of Piezocatalysts: 2D Piezoelectric Materials.

Piezocatalysis is an emerging technique that holds great promise for the conversion of ubiquitous mechanical energy into electrochemical energy through piezoelectric effect. However, mechanical energies in natural environment (such as wind energy, water flow energy, and noise) are typically tiny, scattered, and featured with low frequency and low power. Therefore, a high response to these tiny mechanical energies is critical to achieving high piezocatalytic performance.