An efficient polymer coating for highly acid-stable zeolitic imidazolate frameworks based composite sponges

Lei，Zhiwen1; Feng，Jianwen1; Yang，Yu2,3; Shen，Jinlai1; Zhang，Weide4; Wang，Chaoyang1

2020-01-15

10.1016/j.jhazmat.2019.121057

JOURNAL OF HAZARDOUS MATERIALS   影响因子和分区

0304-3894

1873-3336

Zeolitic imidazolate frameworks (ZIFs) possess tremendous potential in various adsorption and catalysis areas for their particular structures. However, the dispersibility and acid stability of ZIFs are important issues hindering their applications. To address these challenges, a transparent polydimethysiloxane (PDMS) coating was constructed to heterogeneously anchor the Cu doped ZIF-67 (Cu/ZIF-67) nanoparticles on melamine sponge surface, achieving a PDMS-coated ZIF three-dimensional composite sponge. Thus PDMS coating could also effectively protect ZIFs from acid damage to prolong the service life of photocatalyticity. It was demonstrated that the composite sponges were able to repeatedly (over 40 cycles) degrade Sudan I dyes with remarkable photocatalytic efficiency (>97%). More importantly, the ion impenetrability of PDMS coating made the ZIFs based composite a longer term catalytic life than unprotected Cu/ZIF-67 under acid condition. Incidentally, due to the introduction of rough ZIFs and hydrophobic PDMS coating, the obtained sponge also exhibits super-hydrophobicity (158.5°), great compressibility and excellent oil/acid water separation performance. We expect that such a polymer coating strategy could act as a novel inspiration for extending the applications and life span of ZIF-based composites.

Melamine sponge Oil/water separation PDMS coating Photo-catalytic degradation Zeolitic imidazolate framework

SCI ; EI

英语

其他

China Postdoctoral Science Foundation[2018M640778] ; National Natural Science Foundation of China[21805127]

Engineering ; Environmental Sciences & Ecology

Engineering, Environmental ; Environmental Sciences

WOS:000501387100040

Elsevier B.V.

20193507375542

Hydrophobicity ; Microchannels

Coating Materials:813.2 ; Physical Properties of Gases, Liquids and Solids:931.2

ENGINEERING

2-s2.0-85071331711

Scopus

1.Research Institute of Materials ScienceSouth China University of Technology,Guangzhou,510640,China
2.Academy for Advanced Interdisciplinary StudiesSouthern University of Science and Technology,Shenzhen,518055,China
3.College of Materials and EnergySouth China Agricultural University,Guangzhou,510642,China
4.School of Chemistry and Chemical EngineeringSouth China University of Technology,Guangzhou,510640,China

Lei，Zhiwen,Feng，Jianwen,Yang，Yu,et al. An efficient polymer coating for highly acid-stable zeolitic imidazolate frameworks based composite sponges[J]. JOURNAL OF HAZARDOUS MATERIALS,2020,382.

Lei，Zhiwen,Feng，Jianwen,Yang，Yu,Shen，Jinlai,Zhang，Weide,&Wang，Chaoyang.(2020).An efficient polymer coating for highly acid-stable zeolitic imidazolate frameworks based composite sponges.JOURNAL OF HAZARDOUS MATERIALS,382.

Lei，Zhiwen,et al."An efficient polymer coating for highly acid-stable zeolitic imidazolate frameworks based composite sponges".JOURNAL OF HAZARDOUS MATERIALS 382(2020).