Dual-active-sites oriented mesoporous zirconia nanofibers for enhanced removal of phosphate in the presence of humic acid

Tan，Ping1,3; Sun，Jiakang1; Li，Yuhan1,2; Chen，Rouxi4

2022-07-01

10.1016/j.apsusc.2022.153018

APPLIED SURFACE SCIENCE   影响因子和分区

0169-4332

1873-5584

Excessive phosphate in water will inevitably cause eutrophication and further trigger major environmental issues. Efficient removal of phosphate is of great significance to inhibit water eutrophication, however, humic acid (HA) in water aggravates the uncertainty of phosphate removal. In this work, mesoporous zirconia nanofiber (MZN) was synthesized and applied as an adsorbent for phosphate removal in the presence of HA. The performance and mechanism of the enhanced removal of phosphate by MZN in the presence of HA was systematically studied. The results show that MZN has higher adsorption capacity, stronger affinity, and faster adsorption rate for phosphate in solution with HA than that without HA. In the presence of HA, HA is adsorbed on MZN through complexation, which introduces carboxyl and hydroxyl groups to MZN surface, increasing phosphate adsorption through hydrogen bonding. The boosted removal mechanism of phosphate can be ascribed to the dual-active-sites effect between the complexation of MZN to phosphate and the hydrogen bonding of the adsorbed HA to phosphate. The adsorption of phosphate by MZN in the presence of HA follows the outer-sphere complexation. Column adsorption experiment showed that MZN is feasible and effective for the treatment of phosphate in water containing HA based on the discharge standard of phosphate, and can be reused repeatedly through regeneration. The results indicate that MZN holds a great promise in efficient removal of phosphate in the presence of HA.

Adsorption Dual-active-sites Humic acid Mesoporous zirconia nanofibers Phosphate

SCI ; EI

英语

其他

Natural Science Foundation of Guangdong Province[2018A0303100022];Fundamental Research Funds for the Central Universities[2019MS046];National Natural Science Foundation of China[21707036];National Natural Science Foundation of China[51808080];

Chemistry ; Materials Science ; Physics

Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter

WOS:000780337200001

ELSEVIER

20221211829960

Eutrophication ; Gas adsorption ; Hydrogen ; Hydrogen bonds ; Mesoporous materials ; Organic acids ; Water treatment ; Zirconia

Water Treatment Techniques:445.1 ; Nanotechnology:761 ; Physical Chemistry:801.4 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Inorganic Compounds:804.2 ; Solid State Physics:933

MATERIALS SCIENCE

2-s2.0-85126778729

Scopus

1.Chongqing Key Laboratory of Catalysis and Environment Materials,College of Environment and Resources,Engineering Research Center for Waste Oil Recovery Technology and Equipment,Ministry of Education,Chongqing Technology and Business University,Chongqing,400067,China
2.Nanchang Institute of Technology,Nanchang,330044,China
3.School of Environment and Energy,South China University of Technology,Guangzhou Higher Education Mega Centre,Guangzhou,510006,China
4.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Tan，Ping,Sun，Jiakang,Li，Yuhan,et al. Dual-active-sites oriented mesoporous zirconia nanofibers for enhanced removal of phosphate in the presence of humic acid[J]. APPLIED SURFACE SCIENCE,2022,589.

Tan，Ping,Sun，Jiakang,Li，Yuhan,&Chen，Rouxi.(2022).Dual-active-sites oriented mesoporous zirconia nanofibers for enhanced removal of phosphate in the presence of humic acid.APPLIED SURFACE SCIENCE,589.

Tan，Ping,et al."Dual-active-sites oriented mesoporous zirconia nanofibers for enhanced removal of phosphate in the presence of humic acid".APPLIED SURFACE SCIENCE 589(2022).