Biochar-supported carbon nanotube and graphene oxide nanocomposites for Pb(II) and Cd(II) removal

Liu Taoze; Gao Bin; Fang June; Wang Bing; Cao Xinde

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Biochar-supported carbon nanotube and graphene oxide nanocomposites for Pb(II) and Cd(II) removal

机译：生物炭负载的碳纳米管和氧化石墨烯纳米复合物用于去除Pb（II）和Cd（II）

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Carbon materials such as nanoparticles have provided new solutions for the removal of various environmental contaminants. In this work, two carbon nanomaterial-biochar nanocomposites (SG-PySA-CNT and SG-PySA-GO) were derived from sweetgum biomass pretreated with carbon nanotubes (CNTs) and graphene oxide (GO) through slow pyrolysis at 600 degrees C. Both SG-PySA-CNT and SG-PySA-GO had higher surface area but much lower pore volume than the pristine biochar (SG). Batch sorption experimental results showed that SG-PySA-CNT and SG-PySA-GO had greater sorption ability to Pb(II) and Cd(II) from aqueous solution than SG. SG-PySA-GO was the best sorbent with maximum sorption capacities higher than 40 and 10 mg g(-1) for Pb(II) and Cd(II), respectively. The enhanced metal sorption by the biochar nanocomposites could be mainly attributed to the excellent sorptive properties of the carbon nanoparticles (CNT/GO) distributed and stabilized on the biochar surfaces within the matrix. Because of its facile synthesis and good sorptive properties, biochar-supported CNT and GO nanocomposites have great potential to be used in various environmental applications for the removal of metal and metalloid contaminants.

机译：碳材料（例如纳米颗粒）为去除各种环境污染物提供了新的解决方案。在这项工作中，两种碳纳米材料-生物炭纳米复合材料（SG-PySA-CNT和SG-PySA-GO）是通过在600摄氏度下缓慢热解而从碳纳米管和氧化石墨烯（GO）预处理的甘蔗生物质中得到的。 SG-PySA-CNT和SG-PySA-GO比原始生物炭（SG）具有更高的表面积，但孔体积却低得多。分批吸附实验结果表明，SG-PySA-CNT和SG-PySA-GO对水溶液中Pb（II）和Cd（II）的吸附能力均高于SG。 SG-PySA-GO是最好的吸附剂，对Pb（II）和Cd（II）的最大吸附容量分别高于40和10 mg g（-1）。生物炭纳米复合材料对金属的吸附增强主要归因于分布在并稳定在基质内生物炭表面上的碳纳米颗粒（CNT / GO）的优异吸附性能。由于其易于合成和良好的吸附性能，生物炭负载的CNT和GO纳米复合材料具有巨大的潜力，可用于各种环境应用中，以去除金属和准金属污染物。

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《RSC Advances》 |2016年第29期|共6页
作者
Liu Taoze; Gao Bin; Fang June; Wang Bing; Cao Xinde;
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1. Biochar-supported carbon nanotube and graphene oxide nanocomposites for Pb(II) and Cd(II) removal [J] . Liu Taoze, Gao Bin, Fang June, RSC Advances . 2016,第29期

机译：生物炭负载的碳纳米管和氧化石墨烯纳米复合物用于去除Pb（II）和Cd（II）
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3. Graphene oxide/multi-walled carbon nanotubes/gold nanoparticle hybridfunctionalized disposable screen-printed carbon electrode to determine Cd(II) and Pb(II) in soil [J] . Hui WANG, Yuan Yin, Guo Zhao, International Journal of Agricultural and Biological Engineering . 2019,第3期

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4. Removal of Cd(II), Cd(II), Pb(II) and Zn(II) by an Activated Carbon Impregnated with aCationic Ion Exchange Polymer [C] . Brian E. Reed AIChE annual meeting . 2003

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7. Bismuth Subcarbonate Decorated Reduced Graphene Oxide Nanocomposite for the Sensitive Stripping Voltammetry Analysis of Pb(II) and Cd(II) in Water [O] . Guo Zhao, Mohammed Sedki, Shengcun Ma, 2020

机译：铋亚碳酸盐装饰的石墨烯氧化物纳米复合材料，用于水中Pb（II）和Cd（II）的敏感剥离伏安法分析

Biochar-supported carbon nanotube and graphene oxide nanocomposites for Pb(II) and Cd(II) removal

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