Soft Nitrogen and Sulfur Incorporated into Enzymatic Hydrolysis Lignin as an Environmentally Friendly Antioxidant and Mercury Adsorbent
Soft Nitrogen and Sulfur Incorporated into Enzymatic Hydrolysis Lignin as an Environmentally Friendly Antioxidant and Mercury Adsorbent
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DOI：
10.15376/biores.12.4.7341-7348
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发表时间：
2017-08
期刊：
影响因子：
1.5
通讯作者：
Huang Wenxing;Yu-Hua Zhang;Y. Ge;Liping Qin;Zhili Li
中科院分区：
文献类型：
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作者：
Huang Wenxing;Yu-Hua Zhang;Y. Ge;Liping Qin;Zhili Li
将氮和硫的软供体引入酶解木质素（EHL-NS）中，使其适合于多种应用。通过傅里叶变换红外光谱、扫描电子显微镜、能量色散谱和热重分析对该材料进行表征，证实了该材料具有含氮和硫基团的层状多孔结构。由于软给电子体的强给电子能力，它表现出很高的抗氧化活性。此外，软供体也有助于Hg（II）与EHL-NS的化学络合，这明显增强了Hg（II）在水中的吸附（Qe=180 mg/g，25 °C）。鉴于自由基在清除和吸附方面非常有效，预期功能化酶解木质素将起到有用的作用。
Soft donors of nitrogen and sulfur were incorporated into enzymatic hydrolysis lignin (EHL-NS) to make it suitable for multiple applications. Characterizations of the environmentally friendly material by Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive spectroscopy, and thermogravimetric analysis confirmed the layered porous structure with nitrogen and sulfur groups. It exhibited high antioxidant activity due to the strong electron-donating capability of the soft donors. Moreover, the soft donors also contributed to the chemical complexation of Hg(II) with EHL-NS, which distinctly enhanced the adsorption of Hg(II) in water (Qe=180 mg/g, 25 °C). Given that the free radicals were highly effective at scavenging and adsorption, the functionalized enzymatic hydrolysis lignin is expected to serve a useful role.