A Three-dimensional polyoxometalate/graphene aerogel as a highly efficient and recyclable absorbent for oil/water separation

作者: Zhong-Shuai Wu , Cheng-lin Sun , Xiao-yu Shi , Xiao Wang , Xiao Wang

DOI: 10.1016/S1872-5805(21)60013-6

关键词: GrapheneWettingOxideAbsorption (chemistry)Materials sciencePolyoxometalatePorositySpecific surface areaChemical engineeringAerogel

摘要: Abstract Three-dimensional (3D) graphene aerogels (GAs) with a tunable pore structure, highly accessible surface area, exceptional compressibility, elasticity and wettability have been explored as promising absorbents for efficient oil/water separation. However, the strategies assembling 3D GAs usually involve high-temperature process, resulting in high cost. We report synthesis of porous polyoxometalate (POM)-hybridized GA (POM-GA) recyclable absorbent The material was fabricated at room temperature by self-assembly reduction oxide using POM functional cross-linker hydrazine hydrate reductant. It had interconnected macroporous large specific wettability, displayedexcellent absorption capacities 100-210 g g−1 rapid removal various organic pollutants from water, outperforming most previously reported graphene-based macro-assemblies synthesized temperatures. Moreover, absorbed oils can be readily removed squeezing or first then burning remaining POM-GA. oil-absorption capacity retention rates POM-GA are 96% 90% after 10 absorbing-squeezing absorbing-squeezing-burning cycles, respectively. therefore has great potential separation wide applicability excellent durability.

参考文章(36)
Liming Xu, Guyu Xiao, Caibao Chen, Run Li, Yiyong Mai, Guoming Sun, Deyue Yan, Superhydrophobic and superoleophilic graphene aerogel prepared by facile chemical reduction Journal of Materials Chemistry. ,vol. 3, pp. 7498- 7504 ,(2015) , 10.1039/C5TA00383K
Chao Xu, Ru-sheng Yuan, Xin Wang, Selective reduction of graphene oxide Carbon. ,vol. 29, pp. 61- 66 ,(2014) , 10.1016/S1872-5805(14)60126-8
Anastasia Hiskia, Athanasios Mylonas, Elias Papaconstantinou, Comparison of the photoredox properties of polyoxometallates and semiconducting particles Chemical Society Reviews. ,vol. 30, pp. 62- 69 ,(2001) , 10.1039/A905675K
Bineta Keita, Tianbo Liu, Louis Nadjo, Synthesis of remarkably stabilized metal nanostructures using polyoxometalates J. Mater. Chem.. ,vol. 19, pp. 19- 33 ,(2009) , 10.1039/B813303D
Kai-xuan SHENG, Yu-xi XU, Chun LI, Gao-quan SHI, High-performance self-assembled graphene hydrogels prepared by chemical reduction of graphene oxide New Carbon Materials. ,vol. 26, pp. 9- 15 ,(2011) , 10.1016/S1872-5805(11)60062-0
Rongji Liu, Xuelian Yu, Guangjin Zhang, Suojiang Zhang, Hongbin Cao, Anne Dolbecq, Pierre Mialane, Bineta Keita, Linjie Zhi, Polyoxometalate-mediated green synthesis of a 2D silver nanonet/graphene nanohybrid as a synergistic catalyst for the oxygen reduction reaction Journal of Materials Chemistry. ,vol. 1, pp. 11961- 11969 ,(2013) , 10.1039/C3TA12941A
Yuanchun Ji, Lujiang Huang, Jun Hu, Carsten Streb, Yu-Fei Song, Polyoxometalate-functionalized nanocarbon materials for energy conversion, energy storage and sensor systems Energy and Environmental Science. ,vol. 8, pp. 776- 789 ,(2015) , 10.1039/C4EE03749A
Qing Zhu, Ying Chu, Zhikui Wang, Ning Chen, Li Lin, Fatang Liu, Qinmin Pan, Robust superhydrophobic polyurethane sponge as a highly reusable oil-absorption material Journal of Materials Chemistry. ,vol. 1, pp. 5386- 5393 ,(2013) , 10.1039/C3TA00125C
Hengchang Bi, Zongyou Yin, Xiehong Cao, Xiao Xie, Chaoliang Tan, Xiao Huang, Bo Chen, Fangtao Chen, Qingling Yang, Xinyang Bu, Xuehong Lu, Litao Sun, Hua Zhang, Carbon Fiber Aerogel Made from Raw Cotton: A Novel, Efficient and Recyclable Sorbent for Oils and Organic Solvents Advanced Materials. ,vol. 25, pp. 5916- 5921 ,(2013) , 10.1002/ADMA.201302435
Zhiqiang Niu, Jun Chen, Huey Hoon Hng, Jan Ma, Xiaodong Chen, A Leavening Strategy to Prepare Reduced Graphene Oxide Foams Advanced Materials. ,vol. 24, pp. 4144- 4150 ,(2012) , 10.1002/ADMA.201200197