The development of advanced porous carbon-based materials is a burgeoning field, especially for CO ₂ capture and utilization.

Flexible multifunctional polymer-based electromagnetic interference (EMI) shielding composite fabrics have important application values in 5G communication technology, wearable electronic devices and artificial intelligence. In this work, the flexible and multifunctional MXene/poly(3, 4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)/polyethylene terephthalate (PET) (M-PPSS-PET) composite fabrics are prepared by constructing multilevel conductive networks through a stepwise impregnation process. The PEDOT:PSS acts as a bi-functional intermediate layer of "bonding and conduction". It not only improves the interface bonding strength of MXene and PET fabrics, but also optimizes carrier migration path through energy level matching. The M-PPSS-PET composite fabrics exhibit excellent comprehensive performance, with electrical conductivity (σ) of up to 334.1 S/cm, EMI shielding effectiveness (EMI SE) of 42 dB, and tensile strength of 101 MPa. Even after being folded for 300 times, EMI SE still remains at 93% of its initial value. When stacked with three pieces of M-PPSS-PET composite fabrics, the EMI SE is up to 69 dB. Moreover, M-PPSS-PET composite fabrics also present excellent Joule heating performance and photothermal conversion properties. When the applied voltage is 2 V, M-PPSS-PET composite fabrics quickly reach the surface stability temperature of 116^oC. Under simulated solar irradiation with a power density of 120 mW/cm², the surface stability temperature is up to 85.7^oC. In addition, M-PPSS-PET composite fabrics also show excellent structural stability and flexibility. This work provides a novel and feasible strategy to prepare flexible multifunctional fabrics for applications in the fields of artificial intelligence, flexible wearable electronic devices and smart textiles.

Formic acid (FA) is one of the most prospective hydrogen carriers for renewable energy transformation. In this context, the addition of extra-amine is always required for promoting the reactivity of FA, which is still a key challenge. Herein, we report a simple but effective strategy to synthesize Pd nanoparticles, supported on NH₂-functionalized, phosphorous-doped glucose-based porous carbon (NH₂-P-GC). The introduction of NH₂- groups on the support acts as an immobilized amine-additive for FA dehydrogenation, while phosphorus not only serves as an electronic promoter to keep Pd in the electronic deficient state for FA dehydrogenation, but also as an enlarger of the aperture size of the carbon. As a result, the Pd/NH₂-P-GC has exceptional catalytic activity, 100% H₂ selectivity, CO generation that is undetectable, and good reusability for hydrogen production from FA. In the additive-free dehydrogenation of aqueous FA solution, the initial turnover frequency (TOF) can reach 5126 h⁻¹ at room temperature, which is substantially higher than the best heterogeneous catalyst so far recorded. Overall, the system’s high activity, selectivity, stability, and simplicity in producing CO-free H₂/CO₂ gas from FA, without the need for any additive, makes it attractive for practical deployment.