ELECTROCATALYSIS BY NANOPARTICLES: OXIDATION OF FORMIC ACID AT MANGANESE OXIDE NANORODS-MODIFIED PT PLANAR AND NANOHOLE-ARRAYS

The electro-oxidation of formic acid (an essential reaction in direct formic acid fuel cells) is a challenging process because of the deactivation of anodes by the adsorption of the poisoning intermediate carbon monoxide (CO). Pt electrodes in two geometries (planar and nanohole-array) were modified[r]

Figure 4a shows linear sweep voltammetry of the TiO 1.988 N 0.012 photoanode before and after cobalt treatment. After the cobalt treatment, the photocurrent density at 1.23 V RHE increases from 0.23 mA/cm 2 (without cobalt) to 0.61 mA/cm 2 (60% higher than the unmodified TiO 2 s[r]

Table 4 is obtained and the failured components which can be detected in the GT are identified.
5. Diagnosticability improvement in the GT
The subsystem G 0 given at the top of the matrix in Fig. 5 describes the process without redundant data and and the u[r]

2 d ·sin θ = λ
Where d is the lattice spacing, λ is the wavelength of , 1.5406 Å. The c -axis lattice constants for these samples can be calculated, and Figure 3.7 shows the To study the structure and crystallinity of hydrothermally grown Zn 1-x Mn x O nanorods[r]

water been considered. 2 Their presence at low levels presents analytical challenges, and the environmental impact and public health effects of long-term, low-level expo- sure and combinatory effects of these compounds requires further study. Particular co[r]

Nanocomposites of graphene oxide (GO) and tungsten oxide (WO3) nanobricks were synthesized by co-dispersing graphene oxide and tungsten oxide nanobricks in bi-distilled water with different weight ratios (0.1, 0.3 and 0.5 wt.% of graphene oxide). The ammonia gas sensing properties of nanocomposites[r]

Blades and vanes for gas turbines, usually made of Ni-based superalloys, are exposed at very high temperature in severe oxidation and corrosion environments. Nowadays, thermal barrier coating systems (TBCs) have been applied to protect them against such severe working conditions. In this study, Pt a[r]

2.4.3 Immobilization of urease over the polymer membrane for urea biosensor:
Solid state biosensors are adopted more as compared to liquid state as the stability of the enzyme is very less in the liquid state. The immobilization of the biological component should be at