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A kind of ag prepared by using bovine bone 3 po 4 /go/hap composite photocatalyst method

A composite light and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, catalyst activation/preparation, etc., can solve the problems of reduced photocatalytic ability, limited application and development of silver phosphate photocatalyst, poor stability of silver phosphate, etc. , to achieve the effect of simple preparation method, excellent photocatalytic activity and low cost

Active Publication Date: 2022-06-21
LANZHOU UNIVERSITY
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  • Abstract
  • Description
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Problems solved by technology

[0003] However, the photogenerated electrons generated by silver phosphate under light can easily reduce silver ions to simple silver (4Ag 3 PO 4 +6H 2 O+12h + +12e - →12Ag+4H 3 PO 4 +3O 2 ), photocorrosion occurs, making the stability of silver phosphate relatively poor, resulting in a significant reduction in its photocatalytic ability, which greatly limits the application and development of silver phosphate photocatalysts

Method used

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  • A kind of ag prepared by using bovine bone <sub>3</sub> po <sub>4</sub> /go/hap composite photocatalyst method
  • A kind of ag prepared by using bovine bone <sub>3</sub> po <sub>4</sub> /go/hap composite photocatalyst method
  • A kind of ag prepared by using bovine bone <sub>3</sub> po <sub>4</sub> /go/hap composite photocatalyst method

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Embodiment

[0017] The beef bones were broken into small pieces, boiled with deionized water for several hours and washed several times until the oil and collagen were removed, and then pyrolyzed at 800 °C for 8 hours to obtain biomass calcium hydroxyphosphate. 10:1 ball milling for 20h to make micro-nano particles.

[0018] The above-mentioned calcium hydroxyphosphate powder was added to the silver nitrate solution dispersed with graphene oxide for ultrasonic reaction in the dark for 30min, wherein m(HAP): m(Ag 3 PO 4 ) = 1:2, m(GO):m(Ag 3 PO 4 +HAP)=2:100.

[0019] The product obtained in the previous step was washed with deionized water and absolute ethanol in the dark and centrifuged several times to obtain Ag. 3 PO 4 / GO / HAP complex.

[0020] Put the above product into a vacuum drying oven, and vacuum dry it at 60 °C for 8 h to obtain Ag 3 PO 4 / GO / HAP composite photocatalyst, keep away from light for future use.

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Abstract

The invention discloses a method for preparing Ag by using bovine bone, graphene oxide and silver nitrate 3 PO 4 The method of / GO / HAP composite photocatalyst uses phosphate in bovine bone as the phosphorus source of silver phosphate photocatalyst, which belongs to the field of high-value resource utilization of animal husbandry solid waste. It includes the following steps: breaking the bovine bone into small pieces, boiling it with deionized water for several hours and washing it several times until the grease and collagen are removed, and then putting it into a muffle furnace to pyrolyze it to obtain biomass calcium hydroxyphosphate, which is After ball milling, react with silver nitrate solution dispersed with graphene oxide in the dark under ultrasonic conditions, then wash, centrifuge, and vacuum dry to prepare Ag 3 PO 4 / GO / HAP composite photocatalyst. Biomass calcium hydroxyphosphate is made from bovine bone with a wide range of sources and low price. The prepared catalyst product has high photocatalytic activity in the visible light region, good photocatalytic stability and photocorrosion resistance, and can be used for degradation in industry, agriculture and life. The discharge of organic pollutants in wastewater has good economic and environmental benefits.

Description

technical field [0001] The invention discloses a phosphorus source which uses phosphate in bovine bone as a silver phosphate photocatalyst, and uses bovine bone, graphene oxide and silver nitrate to prepare Ag 3 PO 4 The method of / GO / HAP composite photocatalyst belongs to the field of high-value resource utilization of animal husbandry solid waste. Background technique [0002] The scale of cattle breeding in my country is huge. According to the 2019 National Economic and Social Development Statistical Bulletin of the National Bureau of Statistics, my country's beef production in 2019 was 6.67 million tons, and about 1.66 million tons of cattle bones were produced. The high-value utilization of cattle bones has considerable resource advantages. At present, bone products are mainly rough processed products with low added value, which not only causes waste of resources but also causes environmental pollution. The forbidden band width of silver phosphate is about 2.43eV, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/18B01J37/08B01J37/34C02F1/30C02F101/30C02F101/36C02F101/38
CPCB01J27/1817B01J35/004B01J37/082B01J37/343B01J37/0036C02F1/30C02F2101/36C02F2101/38C02F2101/40C02F2101/308C02F2305/10C02F2101/30
Inventor 贾普琦杜晓辉邹平
Owner LANZHOU UNIVERSITY
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