Three-dimensional composite photocatalytic material and preparation method thereof
A photocatalytic material and three-dimensional composite technology, which is applied in the field of three-dimensional composite photocatalytic materials and their preparation, can solve the problems of ineffective export and utilization, low separation efficiency of photogenerated carriers, and low utilization efficiency of visible light, so as to improve the efficiency of visible light. Utilization efficiency, broadening the utilization range of visible light, and delaying the effect of catalyst deactivation
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Embodiment 1
[0038] In this example, the photocatalytic material WC@WO 3 -MnO 2 preparation and catalytic experiments, including:
[0039] (1) 1 mmol Na 2 WO 4 ·2H 2 O was dissolved in deionized water, acidified with 3M hydrochloric acid solution, adjusted pH=2, fully stirred for 1.5h to obtain a pale yellow turbid solution; then the mixture was transferred to a stainless steel hydrothermal reactor lined with PTFE for Hydrothermal reaction, the reaction temperature is 160 °C, and the reaction time is 12 h; after the reaction, washing and drying are completed and the product H is collected 2 WO 4 , and then calcined in air at 500 °C for 2 h to obtain WO 3 Nanosheets with morphological structures such as figure 2 shown;
[0040] (2) Take an appropriate amount of WO 3 , with MnCl 2 As manganese source, potassium iodate is used as electron sacrificial agent, the three are mixed with deionized water and ultrasonically treated, and MnO is photodeposited under the visible light of 350W...
Embodiment 2
[0044] In this example, the photocatalytic material WC@WO 3 -MnO 2 preparation and catalytic experiments, including:
[0045] (1) 1 mmol Na 2 WO 4 ·2H 2 O was dissolved in deionized water, acidified with 3M hydrochloric acid solution, adjusted pH=2, fully stirred for 1.5h to obtain a pale yellow turbid solution; then the mixture was transferred to a stainless steel hydrothermal reactor lined with PTFE for Hydrothermal reaction, the reaction temperature is 160 °C, and the reaction time is 12 h; after the reaction, washing and drying are completed and the product H is collected 2 WO 4 , and then calcined in air at 500 °C for 2 h to obtain WO 3 Nanosheets;
[0046] (2) Take an appropriate amount of WO 3 , with MnCl 2 As manganese source, potassium iodate is used as electron sacrificial agent, the three are mixed with deionized water and ultrasonically treated, and MnO is photodeposited under the visible light of 350W xenon lamp. 2 , the reaction is 2h to obtain WO 3 -M...
Embodiment 3
[0050] In this example, the photocatalytic material WC@WO 3 -MnO 2 preparation and catalytic experiments, including:
[0051] (1) 1 mmol Na 2 WO 4 ·2H 2 O was dissolved in deionized water, acidified with 3M hydrochloric acid solution, adjusted pH=2, fully stirred for 1.5h to obtain a pale yellow turbid solution; then the mixture was transferred to a stainless steel hydrothermal reactor lined with PTFE for Hydrothermal reaction, the reaction temperature is 160 °C, and the reaction time is 12 h; after the reaction, washing and drying are completed and the product H is collected 2 WO 4 , and then calcined in air at 500 °C for 2 h to obtain WO 3 Nanosheets;
[0052] (2) Take an appropriate amount of WO 3 , with MnCl 2 As manganese source, potassium iodate is used as electron sacrificial agent, the three are mixed with deionized water and ultrasonically treated, and MnO is photodeposited under the visible light of 350W xenon lamp. 2 , the reaction is 2h to obtain WO 3 -M...
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