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[Display omitted] • Multi-functional plasmonic cotton gauze was fabricated by in-situ growth method. • The encoding information of anti-counterfeiting SERS security labels are tunable easily. • The plasmonic cotton show excellent performance in anti-counterfeiting and SERS sensing. Multi-functional plasmonic fabric comprised of silver nanoparticles (Ag NPs) and cotton gauze was fabricated through an in-situ growth method. Ag NPs with high density were immobilized on the surface of cotton fibers. The plasmonic cotton gauze exhibits excellent flexible features, temporal stability and SERS enhancement factors close to 105 ×. The plasmonic cotton gauze was labelled with multiplexed Raman probes and used for anti-counterfeiting applications. The encoding information could be readily changed by adjusting the ratio between components in the mixture of Raman probe molecules. This novel strategy could create rich Raman information based on the combination of a few Raman probes, which significantly increases the security levels in anti-counterfeiting. The plasmonic cotton gauze was also employed as a flexible SERS substrate for sensing pesticide from irregular surfaces of orange by a simple swiping process. [ABSTRACT FROM AUTHOR]

• MnO x -CeO 2 nanoparticle reduction graphene oxide composite aerogel (MnO x -CeO 2 /RGA) were synthesized. • In-situ MnO x -CeO 2 /RGA composite exhibited excellent SCR activity. • High specific surface area contribute to the enhanced SCR activity. • The maximum NO x conversion (99%) of composite aerogel could be attained at 220 °C. In response to the problem of air pollution caused by nitrogen oxides (NO x), we synthesized a three-dimensional (3D) MnO x -CeO 2 nanoparticles/reduced graphene aerogel for low-temperature selective catalytic reduction (SCR) of NO x with NH 3 by a facile one-step hydrothermal treatment. During the hydrothermal reaction, the graphene nanosheets and MnO x -CeO 2 nanoparticles self-assembled into 3D interconnected networks, in which the nanoparticles MnO x -CeO 2 with uniform size were densely anchored onto the graphene nanosheets. Besides, the MnO x -CeO 2 /reduced graphene oxide (RGA) exhibited unique properties such as high specific surface area, and numerous catalytically active sites in comparison with pure MnO x -CeO 2 nanoparticles. Evidences have shown that the chemical bonding between MnO x -CeO 2 and GO achieved high selective catalytic reduction efficiency. The MnO x -CeO 2 /RGA composites displayed highly enhanced catalytic activity in comparison to bare MnO x -CeO 2 nanoparticles which achieved 99% NO x conversion at 220 °C. This work provided a versatile approach to induce the combination of reduced graphene oxide sheets and other oxide nanoparticles, which opened up new avenues for the design and manufacture of catalysts used for low temperature SCR of NO x with NH 3. [ABSTRACT FROM AUTHOR]

[Display omitted] • SAM aerogel is prepared by directional freeze-drying method. • Tuning carbonization temperature and activator ratio to optimize performance. • SAM-700-4 shows 3D interconnected structure with large specific surface area. • SAM-700-4 shows excellent specific capacitance of 441.80 F/g at 0.5 A/g. • SAM-700-4//SAM-700-4 all-solid-state supercapacitor exhibit high energy density. Hierarchical porous carbon shows great potential in the field of energy storage due to high porosity, large surface area, and excellent electrical conductivity. Here, we successfully fabricated carbon aerogel derived from sodium alginate/melamine composite (SAM) by directional freeze-drying combined with simple carbonization and activation process. The optimal SAM-700-4 possesses a high nitrogen (5.67 at.%) and oxygen (8.98 at.%) contents along with high specific surface area of 2577.62 m2/g and unique directional channel structure. Due to their synergistic effect, the SAM-700-4 electrode exhibits a high specific capacitance of 441.80 F/g at a current density of 0.5 A/g. Interestingly, the all-solid-state symmetric supercapacitor based on SAM-700-4//SAM-700-4 in PVA/SA/KOH gel electrolyte has a large energy density of 20.87 Wh/kg at a power density of 4000 W/kg and exhibits excellent cycling stability. It is believed that this N, O co-doped directional hierarchical porous carbon aerogel may show promising prospects as advanced energy storage materials. [ABSTRACT FROM AUTHOR]