Preparation of Disperse Silver Particles by Chemical Reduction
- Авторлар: Xie W.1,2, Zheng Y.1, Kuang J.1, Wang Z.1, Yi S.2, Deng Y.1
-
Мекемелер:
- Key Laboratory of Safety Design and Reliability Technology for Vehicle Engineering, Hunan Province
- College of Aerospace Science and Engineering
- Шығарылым: Том 90, № 4 (2016)
- Беттер: 848-855
- Бөлім: Physical Chemistry of Nanoclusters and Nanomaterials
- URL: https://bakhtiniada.ru/0036-0244/article/view/168076
- DOI: https://doi.org/10.1134/S0036024416040324
- ID: 168076
Дәйексөз келтіру
Аннотация
Mastery over the microscopic shape and size of a nanoparticle enables accurate control of its properties for some strict application. The mechanism of shape-controlled synthesis was discussed by investigating the formation of silver nanospheres prepared by chemical reduction method using Ag(NH3)2+ as metal source, ascorbic acid as reducing agent and polyvinylpyrrolidone (K-30) as dispersant. The effects of temperature, PVP/AgNO3 mass ratio, pH value and the interaction between PVP and silver on the shape and particle size were studied by XRD and SEM. The results show that the morphology of silver particles could transform from branched to spherical and the particle size gradually decrease with the increase of PVP/AgNO3 mass ratio. The particles size can also be significantly influenced by pH value and temperature. The key point for preparing high dispersity spherical silver powder is that the growth rate of each plane of the particle must be uniform and synchronous. Silver powders with spherical particles with mean size of 0.2 μm were synthesized under the optimum conditions (PVP/AgNO3 mass ratio 0.6, pH 7, reaction temperature of 40°C).
Негізгі сөздер
Авторлар туралы
Wei Xie
Key Laboratory of Safety Design and Reliability Technology for Vehicle Engineering, Hunan Province; College of Aerospace Science and Engineering
Хат алмасуға жауапты Автор.
Email: 15573290696@163.com
ҚХР, Changsha, 410114; Changsha, 410073
Yaya Zheng
Key Laboratory of Safety Design and Reliability Technology for Vehicle Engineering, Hunan Province
Email: 15573290696@163.com
ҚХР, Changsha, 410114
Jiacai Kuang
Key Laboratory of Safety Design and Reliability Technology for Vehicle Engineering, Hunan Province
Email: 15573290696@163.com
ҚХР, Changsha, 410114
Zhen Wang
Key Laboratory of Safety Design and Reliability Technology for Vehicle Engineering, Hunan Province
Email: 15573290696@163.com
ҚХР, Changsha, 410114
Shihe Yi
College of Aerospace Science and Engineering
Email: 15573290696@163.com
ҚХР, Changsha, 410073
Yingjun Deng
Key Laboratory of Safety Design and Reliability Technology for Vehicle Engineering, Hunan Province
Email: 15573290696@163.com
ҚХР, Changsha, 410114
Қосымша файлдар
