【摘要】：金納米星是一種具有尖狀結(jié)構(gòu)的多分枝納米顆粒.為了使金納米星枝杈長度可控,利用HEPES作為體系的還原劑、穩(wěn)定劑及形狀誘導(dǎo)劑,在制備過程中進(jìn)行光輻照,得到的金納米星枝杈長度比無光輻照時(shí)的金納米星枝杈長度短,而且不同波長光輻照得到的金納米星枝杈長度有顯著不同.在此基礎(chǔ)上,分析了金納米星枝杈長度變化的物理過程,提出光誘導(dǎo)金納米星生長過程中枝杈長度變化的理論模型.測量了不同枝杈長度的金納米星在光輻照下一定時(shí)間內(nèi)的溫度變化,計(jì)算了金納米星的光熱轉(zhuǎn)換效率.實(shí)驗(yàn)結(jié)果表明,光輻照制備金納米星能夠精確控制金納米星枝杈長度范圍,從而調(diào)控金納米星的光熱轉(zhuǎn)換效率.
[Abstract]:Gold nanoparticles are multi-branched nanoparticles with pointed structure. In order to make the length of the branches of gold nanometers controllable, the length of branches of gold nanosars obtained by using HEPES as reducing agent, stabilizer and shape inducer during the preparation process was shorter than that of gold nanospace branches without light irradiation. Moreover, the length of branches of gold nanoscale stars irradiated by different wavelengths of light is significantly different. On this basis, the physical process of the length variation of branches of gold nanometers is analyzed, and a theoretical model of the length variation of branches in the process of photoinduced growth of gold nanosars is proposed. The temperature changes of gold nanocrystals with different branching lengths were measured under light irradiation for a certain time. The photothermal conversion efficiency of gold nanometers was calculated. The experimental results show that the photothermal conversion efficiency of gold nanocrystals can be controlled by controlling the length of the branching of gold nanocrystals accurately.
【作者單位】： 北京工業(yè)大學(xué)激光工程研究院;
【基金】：國家自然科學(xué)基金(批準(zhǔn)號(hào):51475014)資助的課題~~
【分類號(hào)】：O614.123;TB383.1

【相似文獻(xiàn)】

相關(guān)期刊論文 前4條

1 梁祝;倪晉仁;;煅燒結(jié)合光輻照提高納米AgI/TiO_2的可見光響應(yīng)[J];環(huán)境科學(xué);2009年07期

2 石穎青;何光建;麻向軍;;光輻照引發(fā)的反應(yīng)擠出過程對聚乙烯結(jié)構(gòu)與性能的影響[J];塑料科技;2010年07期

3 陳曦;輻照滅菌法在水處理中的應(yīng)用[J];福建環(huán)境;1998年03期

4 ;[J];;年期

相關(guān)會(huì)議論文 前1條

1 焦瑞;熊振湖;;太陽光輻照的類芬頓體系降解水中低濃度混合藥物及產(chǎn)物的生物毒性評價(jià)[A];2010中國環(huán)境科學(xué)學(xué)會(huì)學(xué)術(shù)年會(huì)論文集(第三卷)[C];2010年

，

本文編號(hào)：2126969