Fabrication of detonation nanodiamond@sodium alginate hydrogel beads and their performance in sunlight-triggered water release

	Fabrication of detonation nanodiamond@sodium alginate hydrogel beads and their performance in sunlight-triggered water release
	Zheng, Dan; Bai, Bo; Xu, Xiaohui; He, Yunhua; Li, Shan; Hu, Na; Wang, Honglun
刊名	RSC ADVANCES
	2019
卷号	9 期号:48
英文摘要	Agricultural water use accounts for around 70% of total water use in the world. Enhancing agricultural water use efficiency is a key way to cope with water shortage. Here, sunlight-responsive hydrogel beads consisting of sodium alginate (SA) matrix and detonation nanodiamond (DND) were fabricated by an ion gelation technique, which has potential applications in controlled water release. The interaction between the DND and SA matrix was investigated by Fourier transform infrared (FTIR) spectra and X-ray diffraction (XRD). UV-vis diffuse reflectance spectra verified DND can absorb solar energy in the UV, visible and even near-infrared regions. DND dispersed in the hydrogel matrix can absorb sunlight and generate heat, increasing the temperature of the matrix and resulting in slow release of water from the elastic beads. In addition, the effects of DND content and pH were systematically studied to evaluate their water adsorption properties. The swelling kinetics of DND@SA hydrogel beads in distilled water could be fitted well with a pseudo-second-order kinetic model. Six consecutive cycles of water release-reswelling indicated that their easy regeneration and reusability. The novel and eco-friendly hydrogel beads should be applicable to on-demand, sequential, and long-term release of water via light exposure.
内容类型	期刊论文
源URL	[http://210.75.249.4/handle/363003/59706]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Zheng, Dan,Bai, Bo,Xu, Xiaohui,et al. Fabrication of detonation nanodiamond@sodium alginate hydrogel beads and their performance in sunlight-triggered water release[J]. RSC ADVANCES,2019,9(48).
APA	Zheng, Dan.,Bai, Bo.,Xu, Xiaohui.,He, Yunhua.,Li, Shan.,...&Wang, Honglun.(2019).Fabrication of detonation nanodiamond@sodium alginate hydrogel beads and their performance in sunlight-triggered water release.RSC ADVANCES,9(48).
MLA	Zheng, Dan,et al."Fabrication of detonation nanodiamond@sodium alginate hydrogel beads and their performance in sunlight-triggered water release".RSC ADVANCES 9.48(2019).