KR20160063527A - 폭발형 나노다이아몬드의 분리 방법 - Google Patents
폭발형 나노다이아몬드의 분리 방법 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B02C23/36—Adding fluid, other than for crushing or disintegrating by fluid energy the crushing or disintegrating zone being submerged in liquid
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
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Abstract
본 발명의 나노다이아몬드 분리방법은 불순물이 혼입할 여지가 있는 무기물의 강산(예를 들면 H2SO4, H2CrO4, HCl, HI 등)이나 알카리금속 및 알카리 토금속,
전이금속 등이 포함된 강염기를 사용하지 않음으로서 종래의 금속 불순물 혼입 문제를 해결할 수 있다.
또한, 본 발명의 분리방법에 의하면 5~50nm 사이즈의 단일입자상 및 복수군집상의 나노다이아몬드 분산액을 제공할 수 있다.
본 발명의 나노다이아몬드는 입자 사이즈가 5~50nm로 균일하고 금속 및 알카리 불순물의 혼입을 억제함으로써 나노다이아모드의 표면에 정량적으로 기능기를 부착을 용이하게 할 수 있도록 하여 IT용 박막의 전구물질, 약물 전달체, 화장료 등에 사용할 수 있다.
Description
도 2 내지 도 13은 실시예 1~8, 비교예 1~4의 분산 용액내에서 나노다이아몬드의 입도 분석을 나타내는 그래프이다.
실험예시 | 평균입자크기(nm) | 중간값 크기(nm) |
입도 분포 | 입자색상 | 불순물 |
실시예1 | 90 | 66.1 | 10~300 | 회색 | 해당사항없음 |
실시예2 | 65 | 46.6 | 18~180 | 흑회색 | 해당사항없음 |
실시예3 | 61 | 47.2 | 18~160 | 흑회색 | 해당사항없음 |
실시예4 | 23 | 18.0 | 7~60 | 흑색 | 해당사항없음 |
실시예5 | 21 | 16.8 | 5~50 | 흑색 | 해당사항없음 |
실시예6 | 28 | 22.3 | 13~70 | 흑색 | 해당사항없음 |
실시예7 | 43 | 29.1 | 10~120 | 흑색 | 해당사항없음 |
실시예8 | 43 | 32.1 | 15~130 | 흑색 | 해당사항없음 |
비교예1 | 85 | 68.7 | 30~230 | 갈회색 | Na 불순물 혼입 |
비교예2 | 75 | 52.1 | 20~220 | 흑회색 | Na 불순물 혼입 |
비교예3 | 174 | 76.6 | 30~700 | 흑회색 | Cl 불순물 혼입 |
비교예4 | 488 | 419.7 | 170~850 | 회색 | 해당사항없음 |
10 : 단일 입자상 나노다이아몬드 20 : 흑연층
30 : 복수 군집상 나노다이아몬드
100 : 응집 DND 입자군
Claims (13)
- 나노다이아몬드 응집체를 탈이온수에 넣어 수화시키는 단계 ;
상기 수용액에 알코올을 첨가하여 혼합용매를 제조하는 단계 ; 및
상기 혼합용매에 초음파를 가하는 분리단계를 포함하는 나노다이아몬드 분리방법. - 제 1항에 있어서, 상기 수용액과 혼합용매의 온도는 상온 내지 100℃로 유지하는 것을 특징으로 하는 나노다이아몬드 분리방법.
- 제 1항에 있어서, 상기 나노다이아몬드 응집체는 탈이온수 100중량대비 0.1~20중량부로 첨가되는 것을 특징으로 하는 나노다이아몬드 분리방법.
- 제 1항에 있어서, 상기 알코올은 물보다 비점이 낮은 것을 특징으로 하는 나노다이아몬드 분리방법.
- 제 1항에 있어서, 상기 탈이온수와 알코올은 부피비로 1 : 0.1~20인 것을 특징으로 하는 나노다이아몬드 분리방법.
- 제 1항에 있어서, 상기 방법은 상기 혼합용매에 초음파를 가하는 중이나 전· 후에 알카리제 또는 산을 첨가하여 pH를 조절하는 단계를 포함하는 것을 특징으로 하는 나노다이아몬드 분리방법.
- 제 1항에 있어서, 상기 산은 무기산 및 유기산 중 금속 및 할로겐원소를 포함하지 않은 산인 것을 특징으로 하는 나노다이아몬드 분리방법.
- 제 1항에 있어서, 상기 혼합용매의 pH를 3~12로 증가시키는 것을 특징으로 하는 나노다이아몬드 분리방법.
- 제 6항에 있어서, 상기 알카리제는 비금속성 염기인 것을 특징으로 하는 나노다이아몬드 분리방법.
- 제 6항에 있어서, 상기 알카리제는 비금속성 아민계 염기인 것을 특징으로 하는 나노다이아몬드 분리방법.
- 제 6항에 있어서, 상기 알카리제 투입에 의해 상기 혼합용매의 제타 전위값이 -100~100mV 범위를 가지는 것을 특징으로 하는 나노다이아몬드 분리방법.
- 제 1항에 있어서, 상기 초음파의 주파수는 2kHz ~ 40KHz 범위인 것을 특징으로 하는 나노다이아몬드 분리방법.
- 제 1항에 있어서, 상기 초음파를 가하는 단계 후에 분리된 나노다이아몬드 입자를 원심분리기로 회수하는 단계를 추가로 포함하는 것을 특징으로 하는 나노다이아몬드 분리방법.
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PCT/KR2015/012705 WO2016085249A1 (ko) | 2014-11-26 | 2015-11-25 | 폭발형 나노다이아몬드의 분리 방법 |
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WO2018152787A1 (zh) * | 2017-02-24 | 2018-08-30 | 深圳先进技术研究院 | 一种超分散纳米金刚石及其制备方法 |
WO2019041093A1 (zh) * | 2017-08-28 | 2019-03-07 | 深圳先进技术研究院 | 一种超分散纳米金刚石分散液及其制备方法和应用 |
WO2021030559A1 (en) * | 2019-08-13 | 2021-02-18 | The Curators Of The University Of Missouri | Disaggregation of nanodiamond particles |
US20220071856A1 (en) * | 2020-09-08 | 2022-03-10 | B.A.I. Technologies, Inc. | UV Protectant Formulations |
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