Biography:

In the past Ji-ming Xu has collaborated on articles with Xiao-Zhong Chu. One of their most recent publications is Direct electrochemistry of Cytochrome c on natural nano-attapulgite clay modified electrode and its electrocatalytic reduction for H2O2. Which was published in journal Electrochimica Acta.

More information about Ji-ming Xu research including statistics on their citations can be found on their Copernicus Academic profile page.

Ji-ming Xu's Articles: (2)

Direct electrochemistry of Cytochrome c on natural nano-attapulgite clay modified electrode and its electrocatalytic reduction for H2O2

AbstractNatural nano-structural attapulgite clay was purified by mechanical stirring with the aid of ultrasonic wave and its structure and morphology was investigated by XRD and transmission electron microscopy (TEM). Cytochrome c was immobilized on attapulgite modified glassy carbon electrode. The interaction between Cytochrome c and attapulgite clay was examined by using UV–vis spectroscopy and electrochemical methods. The direct electron transfer of the immobilized Cytochrome c exhibited a pair of redox peaks with formal potential (E0′) of about 17 mV (versus SCE) in 0.1 mol/L, pH 7.0, PBS. The electrode reaction showed a surface-controlled process with the apparent heterogeneous electron transfer rate constant (ks) of 7.05 s−1 and charge-transfer coefficient (α) of 0.49. Cytochrome c immobilized on the attapulgite modified electrode exhibits a remarkable electrocatalytic activity for the reduction of hydrogen peroxide (H2O2). The calculated apparent Michaelis–Menten constant (Kmapp) was 470 μmol/L, indicating a high catalytic activity of Cytochrome c immobilized on attapulgite modified electrode to the reduction of H2O2. Based on these, a third generation of reagentless biosensor can be constructed for the determination of H2O2.

Adsorption dynamics of hydrogen and deuterium in a carbon molecular sieve bed at 77 K

Highlights•Separation of hydrogen isotopes at 77 K was studied on a CMS with wide pore size distribution.•H2 and D2 showed a slow adsorption rate followed by a fast adsorption rate in the initial period.•Breakthrough separation efficiency was higher than the equilibrium and kinetic ratios.•Quantum molecular sieving contributed to isotope separation in space-limited pore structures.•Dynamic diffusional difference was one of key factors in hydrogen isotope separation in the CMS.

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