CN100400469C - Process of preparing carbon nanotube/nanometer zinc oxide sphere heterojunction - Google Patents
Process of preparing carbon nanotube/nanometer zinc oxide sphere heterojunction Download PDFInfo
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- CN100400469C CN100400469C CNB2006101547321A CN200610154732A CN100400469C CN 100400469 C CN100400469 C CN 100400469C CN B2006101547321 A CNB2006101547321 A CN B2006101547321A CN 200610154732 A CN200610154732 A CN 200610154732A CN 100400469 C CN100400469 C CN 100400469C
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Abstract
The present invention discloses process of preparing carbon nanotube/nanometer zinc oxide sphere heterojuntion. The process includes the following steps: ultrasonically dispersing carbon nanotube mixed alcohol-water solution to obtain alcohol-water solution of carbon nanotube; heating the alcohol-water solution of carbon nanotube to 60-90 deg.c; dropping zinc chloride solution in the concentration of 0.01-0.5 mol/L and triethaolamine solution in the concentration of 0.1-2 mol/L to react for 1-3 hr, centrifuging, and drying. The present invention has simple preparation process and low reaction temperature, and the carbon nanotube/nanometer zinc oxide sphere heterojuntion of the present invention structure is used in the deep research and application of photoelectronic device and gas sensor.
Description
Technical field
The present invention relates to a kind of method for preparing CNT (carbon nano-tube)/zinc oxide nanosphere heterojunction.
Background technology
Since CNT (carbon nano-tube) in 1991 is successfully synthesized, because its special structure has caused it in electric transmission, opto-electronic device, all there is particular performances aspects such as gas sensor, thereby are subjected to paying close attention to widely.In addition, along with the carbon pipe in batches synthetic successfully solve and the advantageous characteristic of matrix material itself makes carbon pipe based composites become the focus of research.At present, carbon pipe/high molecular polymer, carbon pipe/precious metal, composite structures such as carbon pipe/metal oxide have all obtained a lot of application in fields such as nano photoelectronic devices and gas sensors.And zinc oxide is a kind of important semiconductor material with wide forbidden band, and its nano material is widely used in optoelectronic areas such as photodiode, gas sensor, ultraviolet detector.Therefore CNT (carbon nano-tube)/zinc oxide heterogeneous knot expection meeting shows particular performances in fields such as opto-electronic device and gas sensors.Have at present on a small quantity about the report of CNT (carbon nano-tube)/zinc oxide heterogeneous structure, generally all be at high temperature or through complicated chemical reaction make (as, Kim.H.Sigmund, W.Appl.Phys.Lett.2002,81,2085 and Sun, J.Gao, L.Iwasa, M.Chem.Commun.2004,832).
Summary of the invention
The purpose of this invention is to provide a kind of method that adopts the simple low temperature chemical reaction to prepare CNT (carbon nano-tube)/zinc oxide nanosphere heterojunction.
The method for preparing CNT (carbon nano-tube)/zinc oxide nanosphere heterojunction of the present invention may further comprise the steps:
1) with the CNT (carbon nano-tube) ultra-sonic dispersion in the mixing solutions of ethanol and water, obtain the CNT (carbon nano-tube) aqueous ethanolic solution, the volume ratio of second alcohol and water is 1: 1;
2) zinc chloride and trolamine are dissolved in respectively in the deionized water, the preparation volumetric molar concentration is that the liquor zinci chloridi and the volumetric molar concentration of 0.01～0.5 mol is the triethanolamine solution of 0.1～2 mol;
3) the CNT (carbon nano-tube) aqueous ethanolic solution is heated to 60～90 ℃, and in the CNT (carbon nano-tube) aqueous ethanolic solution, drip above-mentioned zinc chloride and triethanolamine solution simultaneously, reaction 1～3h, the mol ratio of zinc chloride and CNT (carbon nano-tube) is 1: 1～10, the mol ratio of zinc chloride and trolamine is 1: 0.2～200, reaction finishes, and is centrifugal, dry, obtains CNT (carbon nano-tube)/zinc oxide nanosphere heterojunction.
Beneficial effect of the present invention is:
Preparation technology is simple, and temperature of reaction is low, adopts the inventive method can obtain CNT (carbon nano-tube)/special structure of zinc oxide nanosphere heterojunction, for the further investigation and the application of opto-electronic device and gas sensor provides the basis.
Description of drawings
Fig. 1 is the stereoscan photograph of CNT (carbon nano-tube)/zinc oxide nanosphere heterojunction.
Fig. 2 is the transmission electron microscope photo of zinc oxide/zinc oxide nanosphere heterojunction.
Embodiment
Further specify the present invention below in conjunction with embodiment.
Embodiment 1:
At first with in 60 milligrams of CNT (carbon nano-tube) ultra-sonic dispersion to 200 milliliter ethanol water mixed solution, wherein the volume ratio of second alcohol and water is 1: 1.Then 0.68g zinc chloride and 8.3 milliliters of trolamines are dissolved in respectively in 500 ml deionized water, the preparation volumetric molar concentration is that the liquor zinci chloridi and the volumetric molar concentration of 0.01 mol is the triethanolamine solution of 0.1 mol.Secondly above-mentioned CNT (carbon nano-tube) solution is heated to 90 ℃.The 1h of while 0 milliliter of zinc chloride of Dropwise 5 and 50 milliliters of triethanolamine solutions in CNT (carbon nano-tube) solution, and reaction then.With above-mentioned solution centrifugal, drying, obtain the heterojunction of carbon nanotube/zinc oxide nanosphere at last.Fig. 1 and Fig. 2 are the stereoscan photograph and the transmission electron microscope photos of CNT (carbon nano-tube)/zinc oxide nanosphere heterojunction.
Embodiment 2:
At first with in 300 milligrams of CNT (carbon nano-tube) ultra-sonic dispersion to 200 milliliter ethanol water mixed solution, wherein the volume ratio of second alcohol and water is 1: 1.Then 3.4g zinc chloride and 166 milliliters of trolamines are dissolved in respectively in 500 ml deionized water, the preparation volumetric molar concentration is that the liquor zinci chloridi and the volumetric molar concentration of 0.5 mol is the triethanolamine solution of 2 mol.Secondly above-mentioned CNT (carbon nano-tube) solution is heated to 60 ℃.The 3h of while 0 milliliter of zinc chloride of Dropwise 5 and 50 milliliters of triethanolamine solutions in CNT (carbon nano-tube) solution, and reaction then.With above-mentioned solution centrifugal, drying, obtain the heterojunction of carbon nanotube/zinc oxide nanosphere at last.Its result is similar with example 1.
Embodiment 3:
At first with in 375 milligrams of CNT (carbon nano-tube) ultra-sonic dispersion to 200 milliliter ethanol water mixed solution, wherein the volume ratio of second alcohol and water is 1: 1.Then 0.85g zinc chloride and 83 milliliters of trolamines are dissolved in respectively in 500 ml deionized water, the preparation volumetric molar concentration is that the liquor zinci chloridi and the volumetric molar concentration of 0.125 mol is the triethanolamine solution of 1 mol.Secondly above-mentioned CNT (carbon nano-tube) solution is heated to 80 ℃.The 2h of while 0 milliliter of zinc chloride of Dropwise 5 and 50 milliliters of triethanolamine solutions in CNT (carbon nano-tube) solution, and reaction then.With above-mentioned solution centrifugal, drying, obtain the heterojunction of carbon nanotube/zinc oxide nanosphere at last.Its result is similar with example 1.
Claims (1)
1. method for preparing CNT (carbon nano-tube)/zinc oxide nanosphere heterojunction is characterized in that may further comprise the steps:
1) with the CNT (carbon nano-tube) ultra-sonic dispersion in the mixing solutions of ethanol and water, obtain the CNT (carbon nano-tube) aqueous ethanolic solution, the volume ratio of second alcohol and water is 1: 1;
2) zinc chloride and trolamine are dissolved in respectively in the deionized water, the preparation volumetric molar concentration is that the liquor zinci chloridi and the volumetric molar concentration of 0.01～0.5 mol is the triethanolamine solution of 0.1～2 mol;
3) the CNT (carbon nano-tube) aqueous ethanolic solution is heated to 60～90 ℃, and in the CNT (carbon nano-tube) aqueous ethanolic solution, drip above-mentioned zinc chloride and triethanolamine solution simultaneously, reaction 1～3h, the mol ratio of zinc chloride and CNT (carbon nano-tube) is 1: 1～10, the mol ratio of zinc chloride and trolamine is 1: 0.2～200, reaction finishes, and is centrifugal, dry, obtains CNT (carbon nano-tube)/zinc oxide nanosphere heterojunction.
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| CNB2006101547321A CN100400469C (en) | 2006-11-21 | 2006-11-21 | Process of preparing carbon nanotube/nanometer zinc oxide sphere heterojunction |
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| CNB2006101547321A CN100400469C (en) | 2006-11-21 | 2006-11-21 | Process of preparing carbon nanotube/nanometer zinc oxide sphere heterojunction |
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| CN100400469C true CN100400469C (en) | 2008-07-09 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101429032B (en) * | 2007-11-06 | 2011-05-18 | 中国科学院化学研究所 | CuO-carbon nano-tube composite micro-nano-sphere, preparation and uses thereof |
| CN101920986B (en) * | 2009-06-16 | 2012-01-11 | 合肥学院 | Preparation method of zinc oxide nanosphere |
| CN101665883B (en) * | 2009-10-19 | 2011-08-10 | 浙江大学 | Method for preparing nano-porous block of Fe-Sn intermetallic compound |
| US9786848B2 (en) | 2010-10-14 | 2017-10-10 | University Of Utah Research Foundation | Nanofiber-based heterojunction approach for high photoconductivity on organic materials |
| CN102157358B (en) * | 2010-12-30 | 2012-08-29 | 北京理工大学 | Method for synthesizing carbon nano tube and zinc oxide heterostructure by hydrothermal method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1667757A (en) * | 2004-03-10 | 2005-09-14 | 中国科学院成都有机化学有限公司 | Composite powdery conductor containing carbon nanotube |
| CN1750176A (en) * | 2004-09-17 | 2006-03-22 | 中国科学院成都有机化学有限公司 | Method for preparing carbon containing nano tube conductive powder |
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| CN1667757A (en) * | 2004-03-10 | 2005-09-14 | 中国科学院成都有机化学有限公司 | Composite powdery conductor containing carbon nanotube |
| CN1750176A (en) * | 2004-09-17 | 2006-03-22 | 中国科学院成都有机化学有限公司 | Method for preparing carbon containing nano tube conductive powder |
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