TY - JOUR
T1 - Elucidating the role of double-confined effect in hollow MOFs/GO catalytic membrane for deep arsenic pollution treatment
AU - Dai, Jiangdong
AU - Li, Lili
AU - Tian, Xiaohua
AU - Zhang, Ruilong
AU - Yang, Dayi
AU - Gao, Qiaoyu
AU - Liu, Shuting
AU - Zhao, Jun
AU - Ye, Jian
AU - Zhang, Xiaobo
AU - Wang, Yi
N1 - This article was supported by the National Natural Science Foundation of China (Grant Nos. 22176218 and 22306075), the Open Project Program of the State Key Laboratory of Photocatalysis on Energy and Environment (Grant No. SKLPEE-KF202104), Jiangsu Funding Program for Excellent Postdoctoral Talent (Grant No. 2023ZB108), and the Open Research Fund of Guangdong Advanced Carbon Materials Co., Ltd. (Kargen-2024A0804).
Publisher Copyright:
© 2024 Elsevier B.V.
PY - 2024/12/21
Y1 - 2024/12/21
N2 - The significance of addressing arsenic contamination is huge, given its widespread environmental impact and detrimental effects on human health. Herein, we developed a double-confined catalytic membrane capable of activating peroxymonosulfate (PMS) by integrating hollow Prussian blue analogues (H-PBA) with a unique void-confinement effect into graphene oxide (GO) laminates. This delicately designed H-PBA/GO membrane displayed 98.8 % p-arsanilic acid (p-ASA) removal with a 9.03 s retention time, surpassing most reported studies. Our experiments underscored that the dual-confined architecture not only drove mass transfer but also bolstered reactant concentration, thereby multiplying catalytic activities. Remarkably, this double-confinement conduced to a sustained dominance of surface-radicals (SO4[rad]−) and singlet oxygen (1O2), bolstering p-ASA degradation across a broad pH spectrum and numerous aqueous realms, inclusive of high salinity waters pertinent to desalination pre-treatment processes. Crucially, the H-PBA/GO membrane demonstrated over 90 % degradation of p-ASA and immobilized total As, unfaltering over 80 h of continuous operation. This signified an evolution in membrane technology, promising enhanced and steadfast performance. This innovation bore profound implications for devising double-confined efficacious and robust catalysts, poised to revolutionize advanced wastewater treatment, notably augmenting desalination systems by fortifying pre-treatment and safeguarding reverse osmosis membranes from organic and arsenic fouling.
AB - The significance of addressing arsenic contamination is huge, given its widespread environmental impact and detrimental effects on human health. Herein, we developed a double-confined catalytic membrane capable of activating peroxymonosulfate (PMS) by integrating hollow Prussian blue analogues (H-PBA) with a unique void-confinement effect into graphene oxide (GO) laminates. This delicately designed H-PBA/GO membrane displayed 98.8 % p-arsanilic acid (p-ASA) removal with a 9.03 s retention time, surpassing most reported studies. Our experiments underscored that the dual-confined architecture not only drove mass transfer but also bolstered reactant concentration, thereby multiplying catalytic activities. Remarkably, this double-confinement conduced to a sustained dominance of surface-radicals (SO4[rad]−) and singlet oxygen (1O2), bolstering p-ASA degradation across a broad pH spectrum and numerous aqueous realms, inclusive of high salinity waters pertinent to desalination pre-treatment processes. Crucially, the H-PBA/GO membrane demonstrated over 90 % degradation of p-ASA and immobilized total As, unfaltering over 80 h of continuous operation. This signified an evolution in membrane technology, promising enhanced and steadfast performance. This innovation bore profound implications for devising double-confined efficacious and robust catalysts, poised to revolutionize advanced wastewater treatment, notably augmenting desalination systems by fortifying pre-treatment and safeguarding reverse osmosis membranes from organic and arsenic fouling.
KW - Catalytic membrane
KW - Double-confined effect
KW - Peroxymonosulfate
KW - Total arsenic
KW - Void-confinement
UR - http://www.scopus.com/inward/record.url?scp=85205432019&partnerID=8YFLogxK
U2 - 10.1016/j.desal.2024.118171
DO - 10.1016/j.desal.2024.118171
M3 - Journal article
AN - SCOPUS:85205432019
SN - 0011-9164
VL - 592
JO - Desalination
JF - Desalination
M1 - 118171
ER -