水基炭黑-胶原蛋白纳米流体制备及稳定性实验

doi:10.16085/j.issn.1000-6613.2023-0561

摘要/Abstract

摘要：

纳米流体由于其优异的光热转换性能，已成为新型太阳能集热介质的研究重点；但因其稳定性差、制备工艺复杂，未能在实际应用中得到推广。本文以去离子水为基液，通过两步法制备炭黑-胶原蛋白纳米流体。探究了材料添加顺序、胶原蛋白种类、超声时间、材料配比以及溶液pH等对纳米流体稳定性的影响。结果表明，制备水基炭黑-胶原蛋白纳米流体时，先分散炭黑再加入胶原蛋白可以提高其稳定性；猪皮胶原蛋白更适用于炭黑-胶原蛋白纳米流体的制备；超声45min，炭黑胶原蛋白质量配比为1/20，悬浮液pH在6.5~7.5之间制备得到的纳米流体稳定性较好。本研究有助于今后水基炭黑-胶原蛋白纳米流体产业化应用于太阳能光热转换领域。

关键词: 纳米流体, 炭黑, 胶原蛋白, 稳定性, 分光光度计法, zeta电位

Abstract:

Due to their excellent photothermal conversion performance, nanofluids have become the research focus of new solar collector media. However, due to its poor stability and complex preparation process, it has not been promoted in practical applications. In this paper, carbon black-collagen nanofluids were prepared by a two-step method using deionized water as the base solution. The effects of material addition order, collagen type, ultrasound time, material ratio and solution pH on the stability of nanofluids were explored. The results showed that the stability could be improved by dispersing carbon black and then adding collagen when preparing water-based carbon black-collagen nanofluids. Porcine skin collagen was more suitable for the preparation of carbon black-collagen nanofluids. The nanofluids prepared by ultrasound for 45min, the carbon black collagen mass ratio of 1/20 and the pH of suspension of 6.5―7.5 had good stability. This research would contribute to the industrial application of water-based carbon black-collagen nanofluids in the field of solar photothermal conversion in the future.

Key words: nanofluids, carbon black, collagen, stability, spectrophotometry, zeta potential

中图分类号:

TK01⁺9

李凯, 魏鹤琳, 左夏华, 杨卫民, 阎华, 安瑛. 水基炭黑-胶原蛋白纳米流体制备及稳定性实验[J]. 化工进展, 2024, 43(4): 1944-1952.

LI Kai, WEI Helin, ZUO Xiahua, YANG Weimin, YAN Hua, AN Ying. Experimental study on the preparation and stability of water-based carbon black-collagen nanofluids[J]. Chemical Industry and Engineering Progress, 2024, 43(4): 1944-1952.

图/表 17

表1 实验所采用原材料

原材料	生产厂家	规格/尺度
炭黑	美国CABOT公司	15nm
胶原蛋白	尚宏生物科技有限公司	500g/袋
去离子水	来源LD-UPW-20超纯水机	电导率<5μS/cm

表2 实验设备

仪器名称	生产厂家	仪器型号
电子天平	上海海康电子仪器厂	FA214
超声波细胞破碎机	宁波新芝生物科技股份有限公司	Scientz IID
紫外-可见分光光度计	南京菲勒仪器有限公司	G-9PC，PHILES
超声波清洗机	深圳福洋科技集团有限公司	F-030S
磁力搅拌仪	常州金坛良友仪器有限公司	HJ-2A
zeta 电位及粒度分析仪	美国布鲁克海文仪器公司	ZetaPALS

图1 不同材料添加顺序纳米流体直观观察实验结果1—先加胶原蛋白后加炭黑；2—先加炭黑后加胶原蛋白；3—胶原蛋白炭黑一起加

图2 不同材料添加顺序纳米流体zeta电位绝对值

图3 不同材料添加顺序纳米流体吸光度随时间变化曲线

图4 不同胶原蛋白纳米流体直观观察实验结果

图5 不同胶原蛋白种类纳米流体zeta电位绝对值

图6 不同胶原蛋白种类纳米流体吸光度随时间变化曲线

图7 不同超声时间纳米流体直观观察实验结果

图8 不同超声时间纳米流体zeta电位绝对值

图9 不同超声纳米流体吸光度随时间变化曲线

图10 不同质量混合比纳米流体直观观察实验结果

图11 不同质量混合比纳米流体zeta电位绝对值

图12 不同质量混合比纳米流体吸光度随时间变化曲线

图13 不同pH纳米流体直观观察实验结果

图14 不同pH纳米流体zeta电位绝对值

图15 不同pH纳米流体吸光度随时间变化曲线

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