Graphene oxide as a water transporter promoting germination of plants in soil
Graphene oxide as a water transporter promoting germination of plants in soil作者机构：State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering and Center for Nano andMicro Mechanics Tsinghua University Beijing 100084 China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2018年第11卷第4期
页 面：1928-1937页
核心收录：
学科分类：0832[工学-食品科学与工程（可授工学、农学学位）] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 09[农学] 0805[工学-材料科学与工程（可授工学、理学学位）] 083202[工学-粮食、油脂及植物蛋白工程] 0902[农学-园艺学] 090201[农学-果树学] 0702[理学-物理学]
基 金：This work was supported by Beijing Natural Sdence Foundation （No. 2172027） and the National Natural Science Foundation of China （Nos. 51372133 and 51672150）.
主 题：graphene oxide,plant growth,germination,water transporter
摘 要：Graphene oxide （GO） is a graphene derivative bearing various oxygen-containing functional groups attached to the basal plane and to the edges of the graphene lattice and hence has a unique structure in which numerous hydrophobic sp2 clusters are isolated within the hydrophilic sp3 C-O matrix. In this study, the hydrophilic nature and water-transporting properties of GO were exploited to promote germination and growth of plants. It was found that a low dose of GO significantly promoted the germination of spinach and chive in soil. The oxygen-containing functional groups of GO collected water, and the hydrophobic sp2 domains transported water to the seeds to accelerate the germination of plants. The strong interaction between GO and the surfaces of soil grains stabilized GO in the soil and prevented dissipation of GO. In addition, no GO was detected either on the surface or inside the cells of plants; this finding confirmed that GO was not phytotoxic. Therefore, GO may serve as a promising nontoxic additive to increase a plant yield.
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