Effect of charged nano-particles on ceramic microfiltration membrane fouling

Poly(N-heterocyclic carbene)-Protected Water-Soluble Gold Nanoparticles with Tunable Functions for Biosensing Applications

“…Positively charged nanoparticles facilitate the specific interactions with negatively charged aptamer probes. 23,24 In this manuscript, we develop ultrastable trisdentate-NHCprotected Au NPs (Scheme 1). The three imidazolium groups here are designed to stabilize Au NPs for the improvement of Au NPs' stability, and quaternary ammonium salt can fine-tune 2•Au NPs' functions with water solubility and a positive charge, which presents an opportunity to modulate the properties of the NPs.…”

“…Inspired by the attractive performance of poly-NHC ligands and properties required in biological applications with tuning by nitrogen substituents, we became interested in studying poly-NHC surface-modified water-soluble Au NPs, with the aim of obtaining stable water-soluble positively charged Au NPs that can be applied in biological sensing. Positively charged nanoparticles facilitate the specific interactions with negatively charged aptamer probes. , …”

Integration of Microfiltration and Visible-Light-Driven Photocatalysis on a ZnWO4 Nanoparticle/Nickel–Aluminum-Layered Double Hydroxide Membrane for Enhanced Water Purification

“…In the past few decades, modern industrialization has already faced serious pollution predicaments including water pollution, gas pollution, and solid waste pollution, leading to wide and deep threat to the environment, people’s health, and life. − Hence, how to resolve of the mounts of wastewater without any secondary pollution becomes particularly important in many industrial productions. , Therefore, several original approaches including adsorption, photocatalytic degradation, and membrane separation have been employed for wastewater purification. In particular, membrane separation techniques with quick separation efficiency and low effect on the environment have attracted many scholars’ eyes. , Besides, microfiltration can be regarded as a promising way for wastewater purification because of its high wastewater treatment efficiency and lower energy demand. , However, the separation effects of the commonly used microfiltration membrane mainly depend on the size difference . As things now stand, the microfiltration membrane with a small channel structure will badly block the smooth removal of organic contaminants in wastewater, resulting in a lower wastewater treatment capacity and posing risks. , More importantly, the connatural membrane contamination, which results in high flux loss and energy consumption, also limits its practical application …”

“…8,9 However, the separation effects of the commonly used microfiltration membrane mainly depend on the size difference. 10 As things now stand, the microfiltration membrane with a small channel structure will badly block the smooth removal of organic contaminants in wastewater, resulting in a lower wastewater treatment capacity and posing risks. 11,12 More importantly, the connatural membrane contamination, which results in high flux loss and energy consumption, also limits its practical application.…”

“…The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.iecr.9b06831. Pseudo-first-order degradation kinetics for MB with different photocatalysts, used to estimate Langmuir− Hinshelwood coefficients; rate constant k of TC with different photocatalysts; pure water flux of the asprepared membranes; recycling of the ZWLDH-20 composite at pH 7.0 under visible light irradiation; and species trapping experiments for MB degradation over the ZWLDH-20 photocatalyst under visible light irradiation (PDF) School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, People's Republic of China; orcid.org/0000-0002-3071-0623; Phone: +86 731 88830833; Email: jiaofp@163.com, jiaofp@csu.edu.cn; Fax: +86 731 88830833 Authors Guoqing Zhao − School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, People's Republic of China Jiao Zou − School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, People's Republic of China Xiaoqing Chen − School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, People's Republic of China; orcid.org/0000-0002-8768-8965 Taiheng Zhang − School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, People's Republic of China Jingang Yu − School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, People's Republic of China Shu Zhou − School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, People's Republic of China Caifeng Li − School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, People's Republic of China…”