CN110038593A - High efficiency photocatalysis restore Cr(VI) hollow ball-shape C@SnO2@SnS2The preparation method of ternary complex - Google Patents

High efficiency photocatalysis restore Cr(VI) hollow ball-shape C@SnO2@SnS2The preparation method of ternary complex Download PDF

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Publication number
CN110038593A
CN110038593A CN201910350278.4A CN201910350278A CN110038593A CN 110038593 A CN110038593 A CN 110038593A CN 201910350278 A CN201910350278 A CN 201910350278A CN 110038593 A CN110038593 A CN 110038593A
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sno
hollow
sns
ternary complex
shape
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赵晓华
魏崇
娄向东
李炳鑫
王晓兵
崔佳宝
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Henan Normal University
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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
    • 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
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/50Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/51Spheres
    • 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
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/70Treatment of water, waste water, or sewage by reduction
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/20Heavy metals or heavy metal compounds
    • C02F2101/22Chromium or chromium compounds, e.g. chromates
    • 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)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
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Abstract

The invention discloses a kind of high efficiency photocatalysis restore Cr(VI) hollow ball-shape C@SnO2@SnS2The preparation method of ternary complex, using first by SnO2It is supported in carbon ball and the hollow shape C@SnO containing a large amount of carbon is obtained by the method being not exclusively sintered2, TAA is then added, prepares the C@SnO of the hollow structure with different states of cure (vulcanization) in water-heat process using ion-exchange2@SnS2Ternary complex, carbon, SnO2And SnS2The pattern of synergistic effect and hollow structure between three enhances ternary complex and ability is absorbed and utilized to visible light, promotes the separation of photogenerated charge, hollow ball-shape C@SnO2@SnS2Ternary complex is to Cr(VI) absorption and visible light photocatalytic degradation ability significantly increase, under visible light to Cr (VI) have good removal effect.

Description

High efficiency photocatalysis restore Cr(VI) hollow ball-shape C@SnO2@SnS2Ternary complex Preparation method
Technical field
The invention belongs to the synthesis technical fields of catalysis material, and in particular to a kind of high efficiency photocatalysis reduction Cr(VI) Hollow ball-shape C@SnO2@SnS2The preparation method of ternary complex.
Background technique
It Cr(VI) is pollutant common in plating, pigment and chromate industrial wastewater, it has high toxicity and Gao Liudong Property, there is very big harm to environment, ecology and human health.Find efficiently removal Cr(VI) method be always people processing The focus of chromate waste water.Conductor photocatalysis is as a kind of emerging technology, in processing Cr(VI) aspect has certain advantage, The technology is environmentally protective, using sunlight and low energy consumption, be not likely to produce secondary pollution and can be by Cr(VI) be converted into hypotoxicity Cr(III), be a kind of technology of great development and application prospect.
SnO2It is a kind of common broad-band gap n-type semiconductor, in photocatalysis field, SnO2Due to it is safe and non-toxic, Stability is good, structure and the advantages that pattern is easy to regulate and control, photocatalysis performance is excellent, it is considered to be the green ring with development prospect Protect one of catalyst.However SnO2The broad-band gap of nano material and the high recombination rate of photo-generate electron-hole pairs limit it in reality In application.SnS2It is CdI2Type layered semiconductor, band gap are 2.2-2.35 eV, have stronger response to visible light.SnS2Nontoxic, It is readily synthesized and chemical property is stablized, be a kind of effective visible light catalyst.SnO2With narrow gap semiconductor SnS2Coupling is formed Hetero-junctions is to widen SnO2Spectral response range and the effective ways that separate of enhancing photogenerated charge.
The pattern of photochemical catalyst also has very important influence on photocatalysis effect.The pattern of hollow structure is beneficial to light Absorption of the catalyst to light increases light in the reflection path of catalytic inner, so that performance is absorbed and utilized to light in reinforcing material, Achieve the purpose that improve material light catalysis property.
The carbon ball of glucose synthesis as carbon material, with synthetic method, stablize by simple, low in cost, environmental-friendly, property The advantages that strong with electric conductivity.Carbon ball is also the synthesis common mould material of hollow structure, in the process of synthesis hollow structure material If not exclusively it is sintered carbon ball in, in the material, then on the one hand remaining carbon can be used as photosensitizer and increases material a large amount of carbon of remaining Visible light is absorbed and utilized in material;On the other hand due to the pyranose structure of a large amount of conjugatedπbonds in carbon ball surface composition easily with partly lead Body material tight combines, and not exclusively after sintering, still largely the carbon with semiconductor close contact, these carbon are easy and fast to shift remaining Light induced electron reduces the recombination probability of light induced electron and hole in semiconductor, so as to further increase the photocatalysis of material Performance.
Though at present about SnO2/SnS2The document report of heterojunction photocatalysis degradation of dye etc., but there are no hollow shape C@SnO2@SnS2Ternary complex photocatalytic degradation Cr(VI) relevant report.
Summary of the invention
The object of the present invention is to provide a kind of high efficiency photocatalysis restore Cr(VI) hollow ball-shape C@SnO2@SnS2Ternary The preparation method of compound, using first by SnO2It is supported in carbon ball and is obtained by the method being not exclusively sintered containing a large amount of carbon Hollow shape C@SnO2, TAA(thioacetamide is then added), being prepared in water-heat process using ion-exchange has different sulphur The C@SnO of the hollow structure of change degree2@SnS2Ternary complex, carbon, SnO2And SnS2Synergistic effect and sky between three The pattern of core structure enhances ternary complex and ability is absorbed and utilized to visible light, promotes the separation of photogenerated charge, the sky Bulbus cordis shape C@SnO2@SnS2Ternary complex is to Cr(VI) absorption and visible light photocatalytic degradation ability significantly increase, in visible light Under to Cr (VI) have good removal effect.
The present invention adopts the following technical scheme that achieve the above object, and high efficiency photocatalysis restores Cr(VI) hollow ball-shape C@ SnO2@SnS2The preparation method of ternary complex, it is characterised in that specific steps are as follows:
Step S1: the glucose solution that molar concentration is 0.5 mol/L is placed in hydrothermal reaction kettle in 180 DEG C of hydro-thermal reactions 8 H obtains carbon ball, disperses obtained carbon ball in deionized water, and ultrasonic disperse uniformly obtains carbon ball dispersion liquid;
Step S2: the SnCl for being 0.01 mol/L by molar concentration4·5H2O solution is added to the carbon ball dispersion that step S1 is obtained In liquid, transfers in water-bath and be transferred in hydrothermal reaction kettle after 25-50 DEG C of 2 h of stirring, in 180 DEG C of hydro-thermal reactions 10 H, cooled to room temperature obtain C@SnO after centrifugation, washing, drying2
Step S3: the C@SnO that step S2 is obtained2Hollow C@is obtained in 350-450 DEG C of calcining 1-3 h in air atmosphere SnO2
Step S4: thioacetamide is added to the hollow C@SnO that step S3 is obtained2Aqueous dispersions in, wherein C@SnO2With The molar ratio of thioacetamide is 1:1-6, is transferred in hydrothermal reaction kettle in 180 DEG C of 10 h of hydro-thermal reaction, be centrifuged, Be filtered, washed, be dried to obtain high efficiency photocatalysis reduction Cr(VI) hollow ball-shape C@SnO2@SnS2Ternary complex.
Compared with the prior art, the invention has the following beneficial effects:
1, the present invention is burned off carbon ball not exclusively while forming hollow structure by controlling sintering step, and remaining is a large amount of Carbon, the final C@SnO for synthesizing hollow structure2@SnS2Ternary complex;
2, the C@SnO of present invention synthesis hollow structure2@SnS2Ternary complex, which enhances, is absorbed and utilized light, reduces simultaneously Electronics transfer path;
3, the hollow ball-shape C@SnO that the present invention synthesizes2@SnS2Carbon, SnO in ternary complex2And SnS2Collaboration between three is made With not only increasing the separation that is absorbed and utilized and promote photogenerated charge of the compound to visible light;
4, hollow ball-shape C@SnO produced by the present invention2@SnS2Ternary complex is to Cr(VI) there is good absorption and photocatalysis Removal ability.
Detailed description of the invention
Fig. 1 is the FESEM figure that sample is made in embodiment 3;
Fig. 2 is the TEM figure and HRTEM figure that sample is made in embodiment 1;
Fig. 3 is the EDS energy spectrum diagram that sample is made in embodiment 4;
Fig. 4 is that 10 mg/L K of sample removal are made in embodiment 22Cr2O7Cr(VI in solution) effect picture.
Specific embodiment
Above content of the invention is described in further details by the following examples, but this should not be interpreted as to this The range for inventing above-mentioned theme is only limitted to embodiment below, and all technologies realized based on above content of the present invention belong to this hair Bright range.
Embodiment 1
The glucose solution that molar concentration is 0.5 mol/L is placed in hydrothermal reaction kettle and is obtained in 180 DEG C of 8 h of hydro-thermal reaction Carbon ball disperses the obtained carbon ball of 300 g in deionized water, and ultrasonic disperse uniformly obtains carbon ball dispersion liquid;By molar concentration For the SnCl of 0.01 mol/L4·5H2In the carbon ball dispersion liquid that O solution is added to, transfer in water-bath in 25 DEG C Be transferred in hydrothermal reaction kettle after stirring 2 h, in 180 DEG C of 10 h of hydro-thermal reaction, cooled to room temperature, through centrifugation, washing, C@SnO is obtained after drying2;The C@SnO that will be obtained2Hollow C@SnO is obtained in 350 DEG C of 3 h of calcining in air atmosphere2;By sulphur The hollow C@SnO being added to for acetamide2Aqueous dispersions in, wherein C@SnO2With the molar ratio of thioacetamide For 1:2, it is transferred in hydrothermal reaction kettle in 180 DEG C of 10 h of hydro-thermal reaction, is centrifuged, is filtered, washed, 60 in vacuum oven DEG C be dried to obtain high efficiency photocatalysis reduction Cr(VI) hollow ball-shape C@SnO2@SnS2Ternary complex.
Embodiment 2
The glucose solution that molar concentration is 0.5 mol/L is placed in hydrothermal reaction kettle and is obtained in 180 DEG C of 8 h of hydro-thermal reaction Carbon ball disperses the obtained carbon ball of 300 g in deionized water, and ultrasonic disperse uniformly obtains carbon ball dispersion liquid;By molar concentration For the SnCl of 0.01 mol/L4·5H2In the carbon ball dispersion liquid that O solution is added to, transfer in water-bath in 35 DEG C Be transferred in hydrothermal reaction kettle after stirring 2 h, in 180 DEG C of 10 h of hydro-thermal reaction, cooled to room temperature, through centrifugation, washing, C@SnO is obtained after drying2;The C@SnO that will be obtained2Hollow C@SnO is obtained in 450 DEG C of 1 h of calcining in air atmosphere2;By sulphur The hollow C@SnO being added to for acetamide2Aqueous dispersions in, wherein C@SnO2With the molar ratio of thioacetamide For 1:3, it is transferred in hydrothermal reaction kettle in 180 DEG C of 10 h of hydro-thermal reaction, is centrifuged, is filtered, washed, 60 in vacuum oven DEG C be dried to obtain high efficiency photocatalysis reduction Cr(VI) hollow ball-shape C@SnO2@SnS2Ternary complex.
Embodiment 3
The glucose solution that molar concentration is 0.5 mol/L is placed in hydrothermal reaction kettle and is obtained in 180 DEG C of 8 h of hydro-thermal reaction Carbon ball disperses the obtained carbon ball of 300 g in deionized water, and ultrasonic disperse uniformly obtains carbon ball dispersion liquid;By molar concentration For the SnCl of 0.01 mol/L4·5H2In the carbon ball dispersion liquid that O solution is added to, transfer in water-bath in 50 DEG C Be transferred in hydrothermal reaction kettle after stirring 2 h, in 180 DEG C of 10 h of hydro-thermal reaction, cooled to room temperature, through centrifugation, washing, C@SnO is obtained after drying2;The C@SnO that will be obtained2Hollow C@SnO is obtained in 400 DEG C of 2 h of calcining in air atmosphere2;By sulphur The hollow C@SnO being added to for acetamide2Aqueous dispersions in, wherein C@SnO2With the molar ratio of thioacetamide For 1:6, it is transferred in hydrothermal reaction kettle in 180 DEG C of 10 h of hydro-thermal reaction, is centrifuged, is filtered, washed, 60 in vacuum oven DEG C be dried to obtain high efficiency photocatalysis reduction Cr(VI) hollow ball-shape C@SnO2@SnS2Ternary complex.
Embodiment 4
The glucose solution that molar concentration is 0.5 mol/L is placed in hydrothermal reaction kettle and is obtained in 180 DEG C of 8 h of hydro-thermal reaction Carbon ball disperses the obtained carbon ball of 300 g in deionized water, and ultrasonic disperse uniformly obtains carbon ball dispersion liquid;By molar concentration For the SnCl of 0.01 mol/L4·5H2In the carbon ball dispersion liquid that O solution is added to, transfer in water-bath in 35 DEG C Be transferred in hydrothermal reaction kettle after stirring 2 h, in 180 DEG C of 10 h of hydro-thermal reaction, cooled to room temperature, through centrifugation, washing, C@SnO is obtained after drying2;The C@SnO that will be obtained2Hollow C@SnO is obtained in 400 DEG C of 2 h of calcining in air atmosphere2;By sulphur The hollow C@SnO being added to for acetamide2Aqueous dispersions in, wherein C@SnO2With the molar ratio of thioacetamide For 1:1, it is transferred in hydrothermal reaction kettle in 180 DEG C of 10 h of hydro-thermal reaction, is centrifuged, is filtered, washed, 60 in vacuum oven DEG C be dried to obtain high efficiency photocatalysis reduction Cr(VI) hollow ball-shape C@SnO2@SnS2Ternary complex.
Embodiment above describes basic principles and main features of the invention and advantage, the technical staff of the industry should Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention Reason, under the range for not departing from the principle of the invention, various changes and improvements may be made to the invention, these changes and improvements are each fallen within In the scope of protection of the invention.

Claims (1)

1. high efficiency photocatalysis restore Cr(VI) hollow ball-shape C@SnO2@SnS2The preparation method of ternary complex, it is characterised in that Specific steps are as follows:
Step S1: the glucose solution that molar concentration is 0.5 mol/L is placed in hydrothermal reaction kettle in 180 DEG C of hydro-thermal reactions 8 H obtains carbon ball, disperses obtained carbon ball in deionized water, and ultrasonic disperse uniformly obtains carbon ball dispersion liquid;
Step S2: the SnCl for being 0.01 mol/L by molar concentration4·5H2O solution is added to the carbon ball dispersion liquid that step S1 is obtained In, it transfers in water-bath and is transferred in hydrothermal reaction kettle after 25-50 DEG C of 2 h of stirring, in 180 DEG C of hydro-thermal reactions 10 H, cooled to room temperature obtain C@SnO after centrifugation, washing, drying2
Step S3: the C@SnO that step S2 is obtained2Hollow C@is obtained in 350-450 DEG C of calcining 1-3 h in air atmosphere SnO2
Step S4: thioacetamide is added to the hollow C@SnO that step S3 is obtained2Aqueous dispersions in, wherein C@SnO2With sulphur Molar ratio for acetamide is 1:1-6, is transferred in hydrothermal reaction kettle in 180 DEG C of 10 h of hydro-thermal reaction, through centrifugation, mistake Filter, wash, be dried to obtain high efficiency photocatalysis reduction Cr(VI) hollow ball-shape C@SnO2@SnS2Ternary complex.
CN201910350278.4A 2019-04-28 2019-04-28 High efficiency photocatalysis restore Cr(VI) hollow ball-shape C@SnO2@SnS2The preparation method of ternary complex Pending CN110038593A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111589456A (en) * 2020-03-09 2020-08-28 浙江理工大学 Carbon fiber cloth @ SnO2@SnS2Heterojunction and method for manufacturing the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111589456A (en) * 2020-03-09 2020-08-28 浙江理工大学 Carbon fiber cloth @ SnO2@SnS2Heterojunction and method for manufacturing the same
CN111589456B (en) * 2020-03-09 2023-04-14 浙江理工大学 Carbon fiber cloth @ SnO 2 @SnS 2 Heterojunction and method for manufacturing the same

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