Zhu Xinwei, Chen Yingxi, Xie Renjian, Zhong Haijian, Zhao Weidong, Liu Yang, Yang Hui
Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou, China.
Key Laboratory of Biomaterials and Bio-fabrication in Tissue Engineering of Jiangxi Province, Ganzhou, China.
Front Chem. 2021 Nov 16;9:794755. doi: 10.3389/fchem.2021.794755. eCollection 2021.
In this paper, guar gum (GG) hydrogel has been successfully prepared by adding GG and Cu mixture into an alkaline medium. The formation mechanism of the hydrogel has been investigated through various techniques. Results reveal GG facilitates the formation of ultrafine copper hydroxide clusters with a diameter of ∼3 nm. Moreover, these nanoclusters bring about a rapid gelling of GG within 10 ms. The synthesized hydrogel is applied to the adsorption of heavy metal ions from wastewater. The hydrogel shows excellent removal efficiency in removing various heavy metal ions. Besides, the hydrogel derived porous carbon exhibits high specific capacitance (281 F/g at 1 A/g) and excellent rate capacity. The high contaminant removal efficiency character and excellent electrochemical performance endow GG hydrogel with potential applications in the environmental and energy storage field.
在本文中，通过将瓜尔胶（GG）和铜的混合物加入碱性介质中，成功制备了瓜尔胶水凝胶。通过各种技术研究了水凝胶的形成机制。结果表明，GG有助于形成直径约为3nm的超细氢氧化铜簇。此外，这些纳米簇使GG在10毫秒内迅速凝胶化。合成的水凝胶应用于废水中重金属离子的吸附。该水凝胶在去除各种重金属离子方面表现出优异的去除效率。此外，由水凝胶衍生的多孔碳表现出高比电容（1A/g时为281F/g）和优异的倍率性能。高污染物去除效率特性和优异的电化学性能使GG水凝胶在环境和储能领域具有潜在应用。
