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Case I: Metal acetylacetonate Example 1: Nickel First, the Ni±oleylamine complexwas prepared by reacting 0.52 g of nickel(acetylacetonate)2[Ni(acac)2, Aldrich Chemical Co., 95%] and 2 mL of oleyla-mine (Aldrich Chemical Co., technical grade, 80%) at 100Cunder an Ar atmosphere. The resulting metal-complex solu-tion was injected into 5 g of triphenylphosphine (TPP, AldrichChemical Co., 99%) at 215C.…

Case 1: Cobalt oxide in Li-Battery Figure 1. Electrochemical properties of the multi-shelled cobalt oxide yolk–shell powders post-treated at various temperatures: (a) Initial discharge and charge curves, (b) and (c) CV curves, and (d) cycling performances.[Nano Research 2014, 7(12): 1738–1748] Figures 6(b) and 6(c) show the cyclic voltammograms (CVs) of the two samples post-treated at…

Case 1: Antiferromagnetic Cobalt Oxide Nanooctahedra The organic−inorganic interface determines the crystalline growth directions of the nanoparticles by means of a dynamic solvation of these surfactants in solution, which generally contain electron-donating groups to allow coordination to electron-poor metal atoms at the nanocrystal surface. Nano Lett. 2014, 14, 2, 640–647 Figure 1. EEL spectra (h)…

Case 1: Cobalt Oxide Nanoparticles [prof. Joon T. Park’s group] Example 1: The fcc CoO solid nanoparallelepipeds, are reduced by the oleylamine surfactant to form fcc Co hollow nanoparallelepipeds A green slurry of [Co(acac)3] (0.10 g, 0.28 mmol) in neat oleylamine (9.24 mL) was heated at 135 °C for 5 min. Immediately after dissolution, the reaction mixture was flash-heated to 200 °C. After…

References Lattice Strain Formation through Spin-Coupled Shells of MoS2 on Mo2C for Bifunctional Oxygen Reduction and Oxygen Evolution Reaction Electrocatalysts Adv. Mater. Interfaces 2019, 6, 1900948 Calculate lattice strain Relative strain in MoS2 of core-shell structures is calculated by the Williamson-Hall method (W-H method) (Acta Metall. 1, 22-31 (1953)). W-H method based on the principle…

Reference Modified Oxygen Defect Chemistry at Transition Metal Oxide Heterostructures Probed by Hard X-ray Photoelectron Spectroscopy and X-ray Diffraction I. Inorganic Chemistry Reference 1. XPS Why does XPS metal spectrum contain two main peaks, M 2p1/2 and M 2p3/2 ? They correspond to different spin–orbit couplings of metal (spin−orbital peaks) What does satellite peaks assign…

I. XPS and XRD 1. Refrences 2. Typical Reasons for the Formation of OXygen Vacancies The formation of VO″ may be caused by the following factors: (i) the lattice O was oxidized to O2 during polarization and (ii) Se on the surface may be oxidized to Se element and peeled off, thus leading to oxygen…

Oxygen Evolution Reaction References Mechanism of enhancement Case I: Dope V into CoP2[Angew. Chem.2022,134, e202116] the O XPS spectrum displays an obvious increased intensity of peak belonging to the adsorbed H2O (Figure 5h), suggesting the H2O adsorption ability is improved. Importantly, a new peak appears at 532.5 eV assigned to the oxygen vacancy,46 which often plays a…

References 1. NonAqueous AOR 2. Aqueous AOR 2.1. References 2.2. Experiments 2.2.1. Preparing substrate 2.2.1. Preparing working electrode 2.2.3. Preparing electrolyte Electrolyte solutions used for oxygen evolution reaction (OER) experiments contained 1 M NaOH in water, and electrolyte solutions used for alcohol oxidation experiments (AOR) contained 1 M NaOH and 100 mM alcohol (EtOH, n-PrOH,…

References ElectroChemistry (EC) vs. PhotoElectroChemistry (PEC) In electrochemical N2 reduction, N2 reduction at the cathode is paired with water oxidation at the anode (Scheme 1a). The overall reaction is thermodynamically uphill, and therefore, an electrochemical N2 reduction cell requires an electrical energy input as in the case of an electrochemical water splitting cell. A photoelectrochemical…