TY - JOUR
T1 - A novel ultralight 3D-Mn(OH)4 porous material for heavy metal ions removal from water
AU - Wang, Yanqiu
AU - Chen, Lu
AU - Xu, Zhenye
AU - Yi, Chengjie
AU - Zhong, Zhaoxiang
AU - Ju, Shengui
AU - Xing, Weihong
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2020/5/1
Y1 - 2020/5/1
N2 - Three-dimensional (3D) metal oxides, consisting of a simple nanostructure, have become the key to numerous environmental remediation technologies owing to their unique properties. Herein, a novel ultralight (0.0834 g/cm3) 3D manganese(IV) hydroxide (Mn(OH)4) material without volume shrinkage was exploited for the first time. The 3D-Mn(OH)4, with a porous structure composed of cross-linked ultra-long nanowires was fabricated through a mild and cost-effective hydrothermal treatment followed by a freeze-drying process. The excellent removal performance for low concentration toxic metal ions of 3D-Mn(OH)4 was ascribed to its high specific surface area, 3D porous structure, and abundant hydroxyl groups on the surface. Experimental data show that the maximum Cd(II), Co(II), and Cu(II) ions adsorption capacities have been demonstrated to be 107.75, 85.48, and 102.45 mg/g, respectively. Importantly, the used 3D-Mn(OH)4 demonstrated an excellent regeneration performance. To account for the mechanisms that affect the adsorption properties, a systematic study was carried out. These findings provide the possibility to expand the use of a novel ultralight 3D-Mn(OH)4 nanomaterial for application in the environmental sciences. It is believed that our research strategy could be extended to fabricate other three-dimensional porous manganese oxides with great promise for various applications.
AB - Three-dimensional (3D) metal oxides, consisting of a simple nanostructure, have become the key to numerous environmental remediation technologies owing to their unique properties. Herein, a novel ultralight (0.0834 g/cm3) 3D manganese(IV) hydroxide (Mn(OH)4) material without volume shrinkage was exploited for the first time. The 3D-Mn(OH)4, with a porous structure composed of cross-linked ultra-long nanowires was fabricated through a mild and cost-effective hydrothermal treatment followed by a freeze-drying process. The excellent removal performance for low concentration toxic metal ions of 3D-Mn(OH)4 was ascribed to its high specific surface area, 3D porous structure, and abundant hydroxyl groups on the surface. Experimental data show that the maximum Cd(II), Co(II), and Cu(II) ions adsorption capacities have been demonstrated to be 107.75, 85.48, and 102.45 mg/g, respectively. Importantly, the used 3D-Mn(OH)4 demonstrated an excellent regeneration performance. To account for the mechanisms that affect the adsorption properties, a systematic study was carried out. These findings provide the possibility to expand the use of a novel ultralight 3D-Mn(OH)4 nanomaterial for application in the environmental sciences. It is believed that our research strategy could be extended to fabricate other three-dimensional porous manganese oxides with great promise for various applications.
KW - 3D-Mn(OH)
KW - Adsorption
KW - Heavy metal ions
KW - Ultralight nanomaterial
UR - http://www.scopus.com/inward/record.url?scp=85076841353&partnerID=8YFLogxK
U2 - 10.1016/j.seppur.2019.116426
DO - 10.1016/j.seppur.2019.116426
M3 - 文章
AN - SCOPUS:85076841353
SN - 1383-5866
VL - 238
JO - Separation and Purification Technology
JF - Separation and Purification Technology
M1 - 116426
ER -