过程工程学报
過程工程學報
과정공정학보
The Chinese Journal of Process Engineering
2010年
1期
155-160
,共6页
张莉%王聪%卓馨%陶淑华
張莉%王聰%卓馨%陶淑華
장리%왕총%탁형%도숙화
水热法%磷钨酸%金纳米颗粒
水熱法%燐鎢痠%金納米顆粒
수열법%린오산%금납미과립
hydrothermal synthesis%phosphotungstie acid%Au nanoparticles
利用Keggin结构的12-磷钨酸作为软模板,采用水热法还原氯金酸制备金颗粒.考察了AuCl_4~-离子与12-磷钨酸的摩尔比、反应时间及反应温度对.Au颗粒的影响.用TEM,UV-Vis,FESEM,XPS,XRD等手段对所制金纳米颗粒的形貌、组分、粒径和结构进行了表征.结果表明,HAuCl_4与磷钨酸反应速率较快,可获得尺寸范围较大的球形、三角形、多孪晶和六边形等不同形貌的.Au颗粒.对Au颗粒的形成机理进行了探讨.
利用Keggin結構的12-燐鎢痠作為軟模闆,採用水熱法還原氯金痠製備金顆粒.攷察瞭AuCl_4~-離子與12-燐鎢痠的摩爾比、反應時間及反應溫度對.Au顆粒的影響.用TEM,UV-Vis,FESEM,XPS,XRD等手段對所製金納米顆粒的形貌、組分、粒徑和結構進行瞭錶徵.結果錶明,HAuCl_4與燐鎢痠反應速率較快,可穫得呎吋範圍較大的毬形、三角形、多孿晶和六邊形等不同形貌的.Au顆粒.對Au顆粒的形成機理進行瞭探討.
이용Keggin결구적12-린오산작위연모판,채용수열법환원록금산제비금과립.고찰료AuCl_4~-리자여12-린오산적마이비、반응시간급반응온도대.Au과립적영향.용TEM,UV-Vis,FESEM,XPS,XRD등수단대소제금납미과립적형모、조분、립경화결구진행료표정.결과표명,HAuCl_4여린오산반응속솔교쾌,가획득척촌범위교대적구형、삼각형、다련정화륙변형등불동형모적.Au과립.대Au과립적형성궤리진행료탐토.
Gold nanoparticles were synthesized by reduction of ehloroaurate acid (HAuCl_4) through hydrothermal synthesis. The effects of influential parameters on synthesis of gold nanoparticles were studied, such as molar ratio of HAuCl_4 to phosphotungstate acid, reaction time, and reaction temperature. Morphology, composition, particle size and structure of the gold nanoparticles were characterized by TEM, UV-Vis, FESEM, XPS, and XRD. The results showed that the reaction rate of HAuCl_4 and phosphottmgstate acid was fast. Au particles with different sizes were synthesized. The morphologies of Au particles such as sphere-like, triangular, multiple-twinned particles, and hexagonal ones could be obtained. The formation mechanism of Au particles was also discussed.
