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Supported copper sulfide photocatalyst used for sewage treatment and preparation method thereof

A photocatalyst and sewage treatment technology, which can be used in catalyst activation/preparation, physical/chemical process catalyst, light water/sewage treatment, etc. It can solve the problems of poor photocatalytic activity and stability, low specific surface area, and poor adsorption performance. , to achieve the effect of good photocatalytic activity and stability, large specific surface area, and easy recycling

Inactive Publication Date: 2018-09-04
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the copper sulfide photocatalysts in the prior art have disadvantages such as easy recombination of electrons and holes, low specific surface area, poor photocatalytic activity and stability, poor adsorption performance, and unfavorable recycling.

Method used

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  • Supported copper sulfide photocatalyst used for sewage treatment and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Calcinate halloysite nanotubes with an average diameter of 0.2 μm and an average length of 0.4 μm at 420° C. for 3.5 h to remove crystal water to obtain thermally activated halloysite nanotubes; add 26 kg of thermally activated halloysite nanotubes 74kg mass concentration is in the ethanol solution of chitosan of 35%, ultrasonic dispersion 17min, then filter, wash, dry, make chitosan modified halloysite nanotube; Get 26kg chitosan modified halloysite nanotube Add 57kg of cerium nitrate solution with a mass concentration of 37% into the tube, stir slowly for 8min, then add 8kg of sodium borohydride and 9kg of sodium hydroxide, continue stirring for 17min, then filter, wash, and dry to obtain cerium-loaded halloysite nano tube; the halloysite nanotubes of 13kg loaded with cerium were added into 14kg mass concentration of 22% sodium hydroxide solution, ultrasonically dispersed for 18min, then added 33kg mass concentration of 56% copper chloride solution and 40kg mass concen...

Embodiment 2

[0037] Calcinate halloysite nanotubes with an average diameter of 0.1 μm and an average length of 0.5 μm at 300° C. for 4 h to remove crystal water to obtain thermally activated halloysite nanotubes; add 20 kg of thermally activated halloysite nanotubes to 80 kg In the ethanol solution of chitosan with a mass concentration of 30%, ultrasonically disperse for 15min, then filter, wash, and dry to obtain chitosan-modified halloysite nanotubes; get 20kg chitosan-modified halloysite nanotubes Add 67 kg of cerium nitrate solution with a mass concentration of 35%, stir slowly for 5 min, then add 5 kg of sodium borohydride and 8 kg of sodium hydroxide, continue stirring for 15 min, then filter, wash, and dry to obtain halloysite nanotubes loaded with cerium It is 20% sodium hydroxide solution that the halloysite nanotube of 12kg load cerium that will make is added 10kg mass concentration, ultrasonic dispersion 15min, then adding 30kg mass concentration is that 50% cupric chloride solut...

Embodiment 3

[0040] Calcinate halloysite nanotubes with an average diameter of 0.3 μm and an average length of 0.3 μm at 500° C. for 2 h to remove crystal water to obtain thermally activated halloysite nanotubes; add 30 kg of thermally activated halloysite nanotubes to 70 kg In the ethanol solution of chitosan with a mass concentration of 38%, ultrasonically disperse for 20min, then filter, wash, and dry to obtain chitosan-modified halloysite nanotubes; get 30kg chitosan-modified halloysite nanotubes Add 48 kg of cerium nitrate solution with a mass concentration of 40%, stir slowly for 10 min, then add 10 kg of sodium borohydride and 12 kg of sodium hydroxide, continue stirring for 20 min, then filter, wash, and dry to obtain cerium-loaded halloysite nanotubes It is in the sodium hydroxide solution of 25% that the halloysite nanotube that the 15kg load cerium that makes is added 15kg mass concentration, ultrasonic dispersion 20min, then adding 35kg mass concentration is that 60% cupric chlo...

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Abstract

The invention belongs to the technical field of sewage treatment, and provides a supported copper sulfide photocatalyst used for sewage treatment and a preparation method thereof. The method comprisesthe following steps: calcining halloysite nanotubes so as to realize thermal activation, then modifying chitosan and loading cerium, further adding a copper chloride solution and a thiourea solution,and loading copper sulfide generated by a microwave hydrothermal reaction onto cerium-containing halloysite nanotubes so as to prepare the supported copper sulfide photocatalyst. Compared with a traditional method, the method provided by the invention has the following advantages: the supported copper sulfide photocatalyst prepared by using the method provided by the invention has large specificsurface area, high light energy utilization rate, insusceptibility to recombination of electrons and holes, good photocatalytic activity and stability, good adsorption performance, significant catalytic degradation and adsorption effects to organic pollutants and the like in sewage, easy recovery and capability of being extensively applied to the field of sewage treatment.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and provides a loaded copper sulfide photocatalyst for sewage treatment and a preparation method. Background technique [0002] Since the 1970s, continuous environmental pollution and energy shortages have aroused people's concerns about the global crisis. In order to achieve the sustainable development of human society, a new kind of energy that can be used for environmental governance and clean energy preparation should be developed. Technology has become an urgent and urgent task. Photocatalytic technology has been highly valued because of its broad application prospects in the fields of environmental protection, clean energy preparation (solar energy into hydrogen energy), and has become a promising technology. [0003] The key to photocatalytic technology is photocatalyst. Among them, copper sulfide is an important transition metal sulfide, and also a multifunctional semiconductor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J31/28B01J35/10B01J37/10B01J37/34C02F1/30C02F101/36C02F101/38
CPCC02F1/30B01J27/04B01J31/06B01J31/28B01J37/10B01J37/346C02F2101/38C02F2101/40C02F2101/36C02F2305/10B01J35/39B01J35/615
Inventor 陈庆司文彬
Owner CHENDU NEW KELI CHEM SCI CO LTD
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