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Chicken feather-derived high-surface-area porous activated carbon (CFAC) material was prepared using chemical activation. A new composite composed of Ru-Pd nanoparticles supported on CFAC (Ru-Pd@CFAC) has been prepared by microwave-thermal reduction in the presence of the support. Characterization by XRD, Raman, BET, FE-SEM/TEM, FT-IR, TGA, XPS, HAADF-STEM-EDS, H 2 -chemisorption, H 2 -TPR, and ICP-AES was used to analyze the catalyst. This catalyst is found to be efficient for the reduction of hexavalent chromium (Cr VI ), potassium ferricyanide (K 3 [Fe(CN) 6 ]), 4-nitrophenol (4-NP), and pendimethalin (PDM), at room temperature, and remains stable, even after several repeated runs. Moreover, it showed excellent catalytic activity compared with the monometallic counterparts., (© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Chicken feather‐derived high‐surface‐area porous activated carbon (CFAC) material was prepared using chemical activation. A new composite composed of Ru‐Pd nanoparticles supported on CFAC (Ru‐Pd@CFAC) has been prepared by microwave‐thermal reduction in the presence of the support. Characterization by XRD, Raman, BET, FE‐SEM/TEM, FT‐IR, TGA, XPS, HAADF‐STEM‐EDS, H2‐chemisorption, H2‐TPR, and ICP‐AES was used to analyze the catalyst. This catalyst is found to be efficient for the reduction of hexavalent chromium (CrVI), potassium ferricyanide (K3[Fe(CN)6]), 4‐nitrophenol (4‐NP), and pendimethalin (PDM), at room temperature, and remains stable, even after several repeated runs. Moreover, it showed excellent catalytic activity compared with the monometallic counterparts. [ABSTRACT FROM AUTHOR]

Palladium nanoparticles encapsulated in the carbon dots (Pd/C‐dots) are demonstrated to play a role of multifunctional nanohybrid in the synergetic applications of sensor and catalysis. The photochemical method is applied to synthesize Pd/C‐dots in which Pd nanoparticles (NPs) are dispersedly encapsulated by C‐dots layer. The nanohybrid can function as a fluorescent sensor and reductive catalyst, due to the inherent properties of C‐dots and Pd NPs, respectively. The Pd/C‐dots exhibit a highly selective and sensitive detection toward the nickel (Ni2+) ion with a detection limit of 7.26 × 10−9m. Moreover, the Ni2+ is detected in MCF‐7 live cells signifying the applicability of nanohybrid as a promising sensor. On the other hand, the Pd/C‐dots show an excellent catalytic performance in the reduction of 4‐nitrophenol and eosin yellow. A plausible mechanism for sensing and catalysis behavior is proposed. The sensor system is designed on the basis of the fluorescence turn‐on when Ni2+ interacts with functional groups of the C‐dots layer. The activities of catalytic reduction are mainly governed by the Pd NPs and further enhanced when the C‐dots layer is incorporated. The Pd/C‐dots can serve as a new paradigm for opening a potential trend in the design of multifunctional materials to diverse applications. [ABSTRACT FROM AUTHOR]