TY - JOUR
T1 - Simultaneous and efficient removal of Cr(VI) and methyl orange on LDHs decorated porous carbons
AU - Chen, Shixia
AU - Huang, Yifeng
AU - Han, Xinxin
AU - Wu, Zeliang
AU - Lai, Cen
AU - Wang, Jun
AU - Deng, Qiang
AU - Zeng, Zheling
AU - Deng, Shuguang
N1 - Funding Information:
This research work was supported by the “Thousand Talent Program” of China and National Natural Science Foundation of China (No. 1672186 ). Authors would like to acknowledge the support from Nanchang University and Arizona State University. S.X. Chen would like to thank the Graduate Students Innovation Fund of Jiangxi Province (YC2017-B004).
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/11/15
Y1 - 2018/11/15
N2 - Layered double hydroxides (LDHs) are currently attracting intense research interests as pollutant adsorbent due to its low cost, non-toxicity, structure amenability and anion exchange capability. Herein, 3-dimensional (3D) flower-like Ni/Al LDH were prepared to decorate H3PO4 activated biomass-derived porous carbons (PAB) via a facile and green hydrothermal method. The as-synthesized nanocomposites (Ni/Al@PAB) displayed favorable removal performance towards both Cr(VI) and methyl orange (MO) from aqueous solution due to the inherited excellent Cr(VI) removal ability from PAB and MO removal ability from Ni/Al LDH. In single-component removal system, the maximum adsorption capacity of 271.5 and 412.8 mg/g for Cr(VI) and MO were achieved on Ni/Al@PAB, respectively. Remarkably, the removal capacity of Cr(VI) and MO both increased in the Cr(VI)–MO binary system due to the synergistic effect including, (i) additional adsorption sites of N-containing groups from MO, (ii) electrostatic interactions by the reduced Cr(III), and (iii) mutual thermal compensation in the binary system. This work paved the way for designing novel LDHs-decorated porous carbon adsorbents and revealed that the acicular Ni/Al LDH decorated PAB could be applied as efficient and simultaneous adsorbent for coexisting toxic pollutants situations.
AB - Layered double hydroxides (LDHs) are currently attracting intense research interests as pollutant adsorbent due to its low cost, non-toxicity, structure amenability and anion exchange capability. Herein, 3-dimensional (3D) flower-like Ni/Al LDH were prepared to decorate H3PO4 activated biomass-derived porous carbons (PAB) via a facile and green hydrothermal method. The as-synthesized nanocomposites (Ni/Al@PAB) displayed favorable removal performance towards both Cr(VI) and methyl orange (MO) from aqueous solution due to the inherited excellent Cr(VI) removal ability from PAB and MO removal ability from Ni/Al LDH. In single-component removal system, the maximum adsorption capacity of 271.5 and 412.8 mg/g for Cr(VI) and MO were achieved on Ni/Al@PAB, respectively. Remarkably, the removal capacity of Cr(VI) and MO both increased in the Cr(VI)–MO binary system due to the synergistic effect including, (i) additional adsorption sites of N-containing groups from MO, (ii) electrostatic interactions by the reduced Cr(III), and (iii) mutual thermal compensation in the binary system. This work paved the way for designing novel LDHs-decorated porous carbon adsorbents and revealed that the acicular Ni/Al LDH decorated PAB could be applied as efficient and simultaneous adsorbent for coexisting toxic pollutants situations.
KW - Biomass-derived carbons
KW - Cr (VI)
KW - Layered double hydroxide (LDH)
KW - Methyl orange (MO)
KW - Simultaneous removal
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U2 - 10.1016/j.cej.2018.07.012
DO - 10.1016/j.cej.2018.07.012
M3 - Article
AN - SCOPUS:85049465747
SN - 1385-8947
VL - 352
SP - 306
EP - 315
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
ER -