A homogeneous heterogeneous tungsten trioxide nanobelt photocatalyst and its preparation method and application
A technology of tungsten trioxide and photocatalyst, which is applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., which can solve the problem of difficult recovery and separation, and less exposure of high catalytic active surface , low utilization rate of sunlight, etc.
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Embodiment 1
[0026] (1) Weigh WCl at a ratio of 2:3 by mass 6 and NH 4 SCN, composed of WCl 6 +NH 4 SCN salt mix for 1 part WCl 6 +NH 4 SCN salt mixture, dissolved in 40 parts of deionized water, stirred for 30min ± 5min to make it fully mixed, mixed and poured into the hydrothermal reaction kettle, the filling degree was controlled at 80% of the reaction kettle volume, and then the hydrothermal reaction kettle was sealed, and the It was placed in a drying oven, the hydrothermal temperature was controlled at 200°C, and the reaction time was controlled at 20 h.
[0027] (2) Naturally cool to room temperature after the reaction, and the obtained product is repeatedly washed with absolute ethanol until neutral, then suction filtered, and dried at 80°C to obtain a homogeneous two-phase (hexagonal phase, orthorhombic phase) WO 3 Nanobelt photocatalyst powder.
[0028] The resulting homogeneous biphasic WO 3 The nanobelt photocatalyst powder sample was analyzed by German Bruker D8 X-ray d...
Embodiment 2
[0032] (1) Weigh WCl according to the ratio of mass ratio range of 2:1 6 and NH 4 SCN, composed of WCl 6 +NH 4 SCN salt mix for 1 part WCl 6 +NH 4 SCN salt mixture, dissolved in 40 parts of deionized water, stirred for 30min ± 5min to make it fully mixed, mixed and poured into the hydrothermal reaction kettle, the filling degree was controlled at 50% of the reaction kettle volume, and then the hydrothermal reaction kettle was sealed, and the Put it into a drying oven, control the hydrothermal temperature at 150° C., and control the reaction time at 10 h.
[0033] (2) Naturally cool to room temperature after the reaction, and the obtained product is repeatedly washed with absolute ethanol until neutral, then suction-filtered, and dried at 80°C to obtain a homogeneous two-phase (hexagonal phase, orthorhombic phase) WO 3 Nanobelt photocatalyst powder.
Embodiment 3
[0035] (1) take by weighing WCl respectively in the ratio of 1:4 by mass ratio range 6 and NH 4 SCN, composed of WCl 6 +NH 4 SCN salt mixture, take 1.3 parts WCl 6 +NH 4 SCN salt mixture, dissolved in 47 parts of deionized water, stirred for 30min ± 5min to make it fully mixed, mixed and poured into the hydrothermal reaction kettle, the filling degree was controlled at 70% of the reaction kettle volume, and then the hydrothermal reaction kettle was sealed, and the Put it into a drying box, control the hydrothermal temperature at 180° C., and control the reaction time at 15 hours.
[0036] (2) Naturally cool to room temperature after the reaction, the obtained product is repeatedly washed with absolute ethanol until neutral, then suction filtered, and dried at 70°C to obtain a homogeneous two-phase (hexagonal phase, orthorhombic phase) WO 3 Nanobelt photocatalyst powder.
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Abstract
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