Defect-Induced Atomic Arrangement in CoFe Bimetallic Heterostructures with Boosted Oxygen Evolution Activity.

Three CoFe-bimetallic oxides with different compositions (termed as CoFeO -A/N/H) are prepared by thermally treating metal-organic-framework (MOF) precursors under different atmospheres (air, N and NaBH /N ), respectively. With the aid of vast oxygen vacancies (O ), cobalt at tetrahedral sites (Co (Th)) in spinel Co O is diffused into interstitial octahedral sites (Oh) to form rocksalt CoO and ternary oxide CoFe O has been induced to give the unique defective CoO/CoFe O heterostructure. The resultant CoFeO -H exhibits superb electrocatalytic activity toward water oxidation: overpotential at 10 mA cm is 192 mV, which is 122 mV smaller than that of CoFeO -A.

TiO@PDA inorganic-organic core-shell skeleton supported Pd nanodots for enhanced electrocatalytic hydrodechlorination.

The development of catalysts with high atom utilization and activity is the biggest challenge for electrocatalytic hydrodechlorination (EHDC) technology. Herein, a design strategy of TiO@PDA inorganic-organic core-shell skeleton for loading lower dosage of noble palladium (Pd) with robust activity is reported. The self-supported TiO@PDA nanorod arrays provides exposed surface area for anchoring Pd and PDA as interlayer controls the Pd nucleation to form nanodots with high dispersion, realizing high atom utilization.