CN108786854A - A kind of compound cadmium sulfide photochemical catalyst - Google Patents

A kind of compound cadmium sulfide photochemical catalyst Download PDF

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Publication number
CN108786854A
CN108786854A CN201710314408.XA CN201710314408A CN108786854A CN 108786854 A CN108786854 A CN 108786854A CN 201710314408 A CN201710314408 A CN 201710314408A CN 108786854 A CN108786854 A CN 108786854A
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parts
photochemical catalyst
cadmium sulfide
catalyst
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不公告发明人
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Foshan City Jie Hao Environmental Technology Co Ltd
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Foshan City Jie Hao Environmental Technology Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/02Sulfur, selenium or tellurium; Compounds thereof
    • B01J27/04Sulfides
    • B01J27/047Sulfides with chromium, molybdenum, tungsten or polonium
    • B01J27/049Sulfides with chromium, molybdenum, tungsten or polonium with iron group metals or platinum group metals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/30Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/39Photocatalytic properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08Heat treatment
    • B01J37/082Decomposition and pyrolysis
    • B01J37/086Decomposition of an organometallic compound, a metal complex or a metal salt of a carboxylic acid
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/34Organic compounds containing oxygen
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/38Organic compounds containing nitrogen
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00Use of specific compounds during water treatment
    • C02F2305/10Photocatalysts

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Catalysts (AREA)

Abstract

The invention discloses a kind of compound cadmium sulfide photochemical catalysts, and each raw material is taken according to parts by weight:10-15 parts of 30-50 parts of cadmium acetate, 10-20 parts of thiocarbamide, 5-10 parts of polyethylene glycol stearate, 10-15 parts of red mud, 2-3 parts of metalloporphyrin, 1-2 parts of cerium salt and mica powder.Photochemical catalyst produced by the present invention has larger specific surface area, good pore structure and more catalytic active center, improve the absorption property of catalyst, light induced electron and hole are efficiently separated, and then improve the activity and efficiency of catalyst, expand absorption of the catalyst in visible-range, greatly improve utilization rate of the catalyst to sunlight, also have many advantages, such as that raw material sources are extensive, of low cost, preparation process is simple, production efficiency is high, low energy consumption, reaction condition is mild, high catalytic efficiency, industrialized production easy to implement.

Description

A kind of compound cadmium sulfide photochemical catalyst
Technical field
The present invention relates to a kind of compound cadmium sulfide photochemical catalysts.
Background technology
Since 21 century, with the excessive use of the promotion and natural resources of industrialization paces, along with the dirt of various environment Dye, energy scarcity problem constantly aggravate.Therefore, various pollutions are administered, it is extremely urgent with the pressure for alleviating the earth to find new energy. Photocatalysis technology is in wastewater treatment, gas purification, sterilization, antifouling, self-cleaning material, dye-sensitized solar cells, makeup Many fields such as product, gas sensor have a wide range of applications.Photocatalysis can be produced under light excitation based on semi-conducting material The fundamental characteristics of the raw light induced electron with strong reducing property and the hole with strong oxidizing property, solid photocatalysts can absorb the sun Light by water and biomass decomposition at hydrogen, also can by air and water body environment organic pollution and inorganic pollution oxidation or Deoxidization, degradation is innocuous substance.Therefore, has the characteristics that low energy consumption, environmentally protective.
Currently, the conductor photocatalysis material of domestic and international most study is mainly metal oxide and sulfide, such as Ti02, W03, ZnO, Fe203, CdS etc..Cadmium sulfide(CdS)In photocatalysis degradation organic contaminant due to having it and having lower energy gap Field has a wide range of applications.But since it is with photoetch and wild effect so that cadmium sulfide photochemical catalyst is urged in light It is easily decomposes in change reaction process, to reduce its photocatalysis efficiency and limit its application.Cadmium sulfide nano-particles due to Its particle is excessively subtle, is easy to inactivate in use environment and agglomerate, not free settling, it is caused to be difficult separation, recycling and repeat It utilizes.To solve the above problems, increasing its stability in use, cadmium sulfide is carried on certain carrier, such as glass, silica gel, work Property charcoal etc., but these carriers there are mechanical strengths weaker, chemical stability, reduce the limitations such as catalytic activity and thermal stability difference. Therefore, how to improve the photocatalytic activity of photochemical catalyst and stability is current research hotspot.
Invention content
The present invention for existing photochemical catalyst there are the problem of, providing a kind of has large specific surface area, catalytic activity high, right The utilization rate height of light source, high catalytic efficiency, stability is good, environment-protecting and non-poisonous, at low cost, the advantages that can repeatedly using compound Type photochemical catalyst.
In order to achieve the goal above, the technical solution adopted by the present invention is as follows:
A kind of compound cadmium sulfide photochemical catalyst, each raw material is taken according to parts by weight:30-50 parts of cadmium acetate, 10-20 parts of thiocarbamide, 10-15 parts of 5-10 parts of polyethylene glycol stearate, 10-15 parts of red mud, 2-3 parts of metalloporphyrin, 1-2 parts of cerium salt and mica powder;Its Preparation method includes the following steps:
(1)By cadmium acetate, thiocarbamide be added ultrasonic generator in, be added suitable quantity of water make it dissolve, then be added ammonium hydroxide adjust pH to 9-10 continues ultrasound 30-60min in the case where frequency is 40-60KHz, obtains suspension;
(2)Ball mill is added in suspension, polyethylene glycol stearate, red mud, metalloporphyrin, cerium salt and mica powder, is added Suitable quantity of water stirs, and obtains paste;
(3)By above-mentioned paste, microwave drying 2-3h, grind into powder after drying place into muffle furnace in temperature at 60-80 DEG C Degree is roasting 3-5h at 400-500 DEG C to get to photochemical catalyst.
Preferably, metalloporphyrin described above is one kind in ferriporphyrin or Cob altporphyrin.
Preferably, cerium salt described above is one kind in cerous sulfate, cerous nitrate or ammonium ceric nitrate.
Preferably, above step(2)The stirring is to stir 30-60min in the case where rotating speed is 300-500r/min.
Preferably, the heating rate of roasting described above is 5-10 DEG C/min.
Preferably, above step(3)The grinding is to grind the material to grain size as 1.0-2.0mm.
Compared with prior art, it advantages of the present invention and has the beneficial effect that:
1, photochemical catalyst produced by the present invention has in larger specific surface area, good pore structure and more catalytic activity The heart improves the absorption property of catalyst so that light induced electron and hole can efficiently separate, and then improve the work of catalyst Property and efficiency, expand absorption of the catalyst in visible-range, greatly improve utilization rate of the catalyst to sunlight.
2, the present invention can be solved catalyst and be easy to lose in use environment using polyethylene glycol stearate as dispersant Living and cohesion, not free settling the problem of.
3, the present invention can not only make catalyst performance more stablize using red mud and mica powder as carrier, it is easier to point From, recycle and be used repeatedly, moreover it is possible to improve the absorption property and photocatalysis performance of catalyst.
4, the photochemical catalyst specific surface area for preparing of the present invention is 150-250m2/g, to rhodamine B in lower 1 hour of sunlight Degradation rate reach 95% or more.
5, the present invention is with raw material sources are extensive, of low cost, preparation process is simple, production efficiency is high, low energy consumption, reaction It mild condition, the advantages that environmental-friendly, absorption property is good, catalytic activity is high, high catalytic efficiency, can be efficiently under visible light exposure Catalytic degradation wastewater organic pollutant has good economic benefit, social benefit and ecological benefits, is more suitable for industrial life Production.
Specific implementation mode
This programme is further illustrated below in conjunction with specific embodiment, but is not limited to protection scope of the present invention.
Embodiment 1
A kind of compound cadmium sulfide photochemical catalyst, proportionally weighs each raw material:Cadmium acetate 30g, thiocarbamide 10g, polyethylene glycol are hard Resin acid ester 7g, red mud 10g, ferriporphyrin 2g, cerous nitrate 1g and mica powder 10g.Preparation method includes the following steps:
(1)By cadmium acetate, thiocarbamide be added ultrasonic generator in, be added 150mL water make it dissolve, then be added ammonium hydroxide adjust pH to 9, continue ultrasound 30min in the case where frequency is 60KHz, obtains suspension;
(2)Ball mill is added in suspension, polyethylene glycol stearate, red mud, ferriporphyrin, cerous nitrate and mica powder, is added 150mL water stirs 60min in the case where rotating speed is 300r/min, obtains paste;
(3)By above-mentioned paste at 60 DEG C microwave drying 3h, the powder of 1.0mm is ground into after dry, muffle furnace is placed into and exists Temperature be at 400 DEG C roasting 5h to get to photochemical catalyst.
Embodiment 2
A kind of compound cadmium sulfide photochemical catalyst, proportionally weighs each raw material:Cadmium acetate 40g, thiocarbamide 15g, polyethylene glycol are hard Resin acid ester 5g, red mud 12g, ferriporphyrin 3g, cerous sulfate 1.5g and mica powder 12g.Preparation method includes the following steps:
(1)By cadmium acetate, thiocarbamide be added ultrasonic generator in, be added 200mL water make it dissolve, then be added ammonium hydroxide adjust pH to 10, continue ultrasound 45min in the case where frequency is 50KHz, obtains suspension;
(2)Ball mill is added in suspension, polyethylene glycol stearate, red mud, ferriporphyrin, cerous sulfate and mica powder, is added 150mL water stirs 45min in the case where rotating speed is 400r/min, obtains paste;
(3)By above-mentioned paste at 70 DEG C microwave drying 2.5h, the powder of 1.0mm is ground into after dry, places into muffle furnace Roasting 4h is to get to photochemical catalyst at being 450 DEG C in temperature.

Claims (6)

1. a kind of compound cadmium sulfide photochemical catalyst, it is characterised in that:Each raw material is taken according to parts by weight:30-50 parts of cadmium acetate, 10-20 parts of thiocarbamide, 5-10 parts of polyethylene glycol stearate, 10-15 parts of red mud, 2-3 parts of metalloporphyrin, 1-2 parts of cerium salt and mica 10-15 parts of powder;Preparation method includes the following steps:
(1)By cadmium acetate, thiocarbamide be added ultrasonic generator in, be added suitable quantity of water make it dissolve, then be added ammonium hydroxide adjust pH to 9-10 continues ultrasound 30-60min in the case where frequency is 40-60KHz, obtains suspension;
(2)Ball mill is added in suspension, polyethylene glycol stearate, red mud, metalloporphyrin, cerium salt and mica powder, is added Suitable quantity of water stirs, and obtains paste;
(3)By above-mentioned paste, microwave drying 2-3h, grind into powder after drying place into muffle furnace in temperature at 60-80 DEG C Degree is roasting 3-5h at 400-500 DEG C to get to photochemical catalyst.
2. compound cadmium sulfide photochemical catalyst according to claim 1, it is characterised in that:The metalloporphyrin be ferriporphyrin or One kind in Cob altporphyrin.
3. compound cadmium sulfide photochemical catalyst according to claim 1, it is characterised in that:The cerium salt is cerous sulfate, nitric acid One kind in cerium or ammonium ceric nitrate.
4. compound cadmium sulfide photochemical catalyst according to claim 1, it is characterised in that:Step(2)The stirring is to turn Speed is to stir 30-60min under 300-500r/min.
5. compound cadmium sulfide photochemical catalyst according to claim 1, it is characterised in that:The heating rate of the roasting is 5- 10℃/min。
6. compound cadmium sulfide photochemical catalyst according to claim 1, it is characterised in that:Step(3)The grinding is by object Abrasive lapping to grain size is 1.0-2.0mm.
CN201710314408.XA 2017-05-06 2017-05-06 A kind of compound cadmium sulfide photochemical catalyst Withdrawn CN108786854A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102641741A (en) * 2011-02-16 2012-08-22 中国科学院金属研究所 Composite photocatalyst with metal cadmium as core and heterostructure as shell and preparation method
CN105709793A (en) * 2016-01-26 2016-06-29 苏州大学 Cadmium sulfide nanoparticle modified niobium pentoxide nanorod/nitrogen doped graphene composite photocatalyst and preparation method and application thereof
CN106179413A (en) * 2016-08-11 2016-12-07 广西南宁胜祺安科技开发有限公司 A kind of preparation method of supported sulfided cadmium photocatalyst
CN106179409A (en) * 2016-08-11 2016-12-07 广西南宁胜祺安科技开发有限公司 A kind of compound cadmium sulfide photocatalyst
CN106215916A (en) * 2016-08-11 2016-12-14 广西南宁胜祺安科技开发有限公司 A kind of compound titanium dioxide optical catalyst
CN106268746A (en) * 2016-08-11 2017-01-04 广西南宁胜祺安科技开发有限公司 A kind of high activity compound oxidizing zinc photocatalyst

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102641741A (en) * 2011-02-16 2012-08-22 中国科学院金属研究所 Composite photocatalyst with metal cadmium as core and heterostructure as shell and preparation method
CN105709793A (en) * 2016-01-26 2016-06-29 苏州大学 Cadmium sulfide nanoparticle modified niobium pentoxide nanorod/nitrogen doped graphene composite photocatalyst and preparation method and application thereof
CN106179413A (en) * 2016-08-11 2016-12-07 广西南宁胜祺安科技开发有限公司 A kind of preparation method of supported sulfided cadmium photocatalyst
CN106179409A (en) * 2016-08-11 2016-12-07 广西南宁胜祺安科技开发有限公司 A kind of compound cadmium sulfide photocatalyst
CN106215916A (en) * 2016-08-11 2016-12-14 广西南宁胜祺安科技开发有限公司 A kind of compound titanium dioxide optical catalyst
CN106268746A (en) * 2016-08-11 2017-01-04 广西南宁胜祺安科技开发有限公司 A kind of high activity compound oxidizing zinc photocatalyst

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