Article
Chemistry, Multidisciplinary
Haleema Saleem, Pei Sean Goh, Asif Saud, Mohammad Aquib Wakeel Khan, Nazmin Munira, Ahmad Fauzi Ismail, Syed Javaid Zaidi
Summary: This study presents the fabrication of a thin-film composite (TFC) membrane with graphene quantum dots (GQDs) derived from banyan tree leaves for water treatment and desalination. The developed membrane shows improved surface smoothness, hydrophilicity, water flux, salt rejection, and chlorine resistance compared to traditional TFC membranes. This research demonstrates the potential of using GQD-TFC membranes in desalination and water treatment applications.
Article
Chemistry, Multidisciplinary
Chang Liu, Rui Cheng, Jiazhuang Guo, Ge Li, He Li, Hong-Gang Ye, Zhi-Bin Liang, Cai-Feng Wang, Su Chen
Summary: Carbon dots (CDs) are promising carbon-based fluorescent nanomaterials with wide application prospects. The CDs prepared from citric acid and carbamide through magnetic hyperthermia treatment exhibit high photoluminescence quantum yield and good dispersibility. The large-area fluorescent nanofiber films embedded with CDs and polymer matrixes show dramatically enhanced mechanical properties.
CHINESE CHEMICAL LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Han Zhang, Luna Jia, Pan Li, Lu Yu, Yibo Liu, Weiran Zhao, Hao Wang, Bo Li
Summary: The demand for air filtration products has increased due to the worsening air pollution and the COVID-19 pandemic. This study reports the development of a durable air filtration membrane with antibacterial properties by using a large-scale blow spinning technique to produce polyvinylidene fluoride (PVDF) nanofiber membranes. The addition of silver nanoparticles (AgNPs) enhances the antibacterial activity without compromising filtration efficiency.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Engineering, Chemical
Nan Li, Yumeng Zhang, Peng Li, Bo Zhu, Wei Wang, Zhiwei Xu
Summary: In this study, the surface of a thin-film composite (TFC) membrane was optimized with graphene oxide quantum dots with amino groups (NH2-GOQDs) through the amide coupling reaction to enhance forward osmosis (FO) membrane performance. The grafting of NH2-GOQDs improved the hydrophilicity and surface roughness of the membrane, resulting in enhanced affinity and contact area with water molecules. The NH2-GOQD-grafted membrane at a concentration of 100 ppm (TFC-100) exhibited superior permeability performance compared to the TFC membrane. It also demonstrated excellent antibacterial properties and resistance to biofouling.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Environmental
Tao Ma, Haiqing Hui, Xiaofei You, Zhiqiang Pei, Miao Tian, Bing Wu
Summary: This study developed a nanofibrous thin-film composite (TFC) forward osmosis (FO) membrane with a tiered dual-layer nanofibrous substrate to enhance membrane stability and cleaning efficiency. The dual-layer nanofibrous substrate showed improved water flux and maintained water/solute selectivity in the presence of foulants in both the feed solution and draw solution.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Wei He, ZhiJun Dai, KangKang Zou, XueYing Li, SongHua Hao, HaoLun Wang
Summary: Flexible sensors have a wide range of applications in lightweight, wearable, and intelligent electronic devices. This article proposes a self-powered flexible sensor based on PVDF nanofiber film, which shows good sensitivity and stability and can be applied for the detection of human physiological signals.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Engineering, Chemical
Jorge Contreras-Martinez, Carmen Garcia-Payo, Paula Arribas, Laura Rodriguez-Saez, Amaia Lejarazu-Larranaga, Eloy Garcia-Calvo, Mohamed Khayet
Summary: End-of-life reverse osmosis membranes can be repurposed for forward osmosis applications as recycled FO and transformed recycled FO membranes, with the latter showing superior performance in terms of water permeate fluxes. The transformation process involves interfacial polymerization to further enhance FO membrane performance. This study demonstrates the feasibility of utilizing discarded RO membranes for wastewater treatment in FO technology, contributing to circular economy and sustainability in membrane science.
Article
Polymer Science
Chenglong Dai, Dan Zhao, Yongqiang Wang, Rui Zhao, Han Wang, Xiangci Wu, Shejiang Liu, Huizhen Zhu, Jianfeng Fu, Mengling Zhang, Hui Ding
Summary: This paper investigates the influence of doping graphene oxide (GO) nanoparticles to the active layer and support layer of thin-film composite forward osmosis (TFC-FO) membranes. The results show that doping GO improves the salt rejection and water permeability of the membrane, forming dense and uniform nano-scale water channels.
Article
Biochemistry & Molecular Biology
Wenchao Zeng, Meiqiong Yu, Junkang Lin, Liulian Huang, Jianguo Li, Shan Lin, Lihui Chen
Summary: In this study, a cost-effective and high-desalination-performance chitosan-based forward osmosis (FO) membrane is developed by coupling electrospun chitosan nanofibers with interfacial-polymerized polyamide. The membrane exhibits a porous and hydrophilic CS layer with a large pore-diameter of 274 nm and low thickness of 10 μm, enabling the effective transport of water molecules and achieving a superhigh water flux of 107.53 LMH at a low salt-water ratio. The membrane also shows superior desalination performance for different salt species and concentrations.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Environmental Sciences
Harshita Jain, Ajay Kumar, Vishnu D. Rajput, Tatiana Minkina, Anoop Kumar Verma, Shikha Wadhwa, Renu Dhupper, Manoj Chandra Garg, Himanshu Joshi
Summary: A novel thin-film composite (TFC) membrane incorporating manganese oxide (MnO2) induced graphene quantum dots (GQDs) nanocomposite was fabricated for enhanced FO performance. Experimental results showed that a higher stacking of nanocomposites led to improved water flux and salt rejection rates in the membrane.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Parashuram Kallem, Ruchi Gaur, Ravi P. Pandey, Shadi W. Hasan, Heechul Choi, Fawzi Banat
Summary: The study explored the use of thermally rolled PVDF/PAN electrospun nanofibers as substrates for TFC FO membranes, showing that the addition of PAN can enhance water flux and selectivity of the membranes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Ling Yu, Beibei Jiang, Zhihan Yang, Da Chen, Ying Yuan, Xiaoyun Fan, Yang Yu
Summary: In this study, the uniform coating of calcium carbonate particles on a graphene oxide interlayer was shown to promote the formation of a high-performance polyamide active layer. This resulted in a loose and crater-like structure with the highest cross-linking degree, leading to superior performance compared to other reported forward osmosis membranes.
Article
Chemistry, Multidisciplinary
Xiaoli He, Lei Wang, Kangning Lv, Wenjun Li, Song Qin, Zhihong Tang
Summary: Fish collagen-PCL nanofiber membranes prepared by electrospinning have good mechanical properties and biocompatibility, and can promote cell adhesion and proliferation.
Article
Environmental Sciences
Ibrar Ibrar, Sudesh Yadav, Ali Altaee, Javad Safaei, Akshaya K. Samal, Senthilmurugan Subbiah, Graeme Millar, Priyamjeet Deka, John Zhou
Summary: Membrane cleaning is crucial in wastewater treatment systems, and sodium docusate can serve as an effective cleaning agent. This study evaluated the efficiency of sodium docusate in cleaning fouled forward osmosis membranes and found that factors such as dose rate, contact time, flow or static conditions, and process configuration can impact the cleaning effectiveness. The results showed that sodium docusate can achieve remarkable flux recovery at a low concentration and can be used for static cleaning without the need for additional pumping energy, making it cost-effective and energy-saving.
Article
Electrochemistry
Yang Chen, Ning Wang, Shan Han, Martin Jensen, Xianfeng Li, Xingxiang Zhang
Summary: A composite nanofiber mat containing SnOx nanoparticles, nanowires, and nanorods embedded in hybrid carbon nanofibers was successfully prepared, showing high specific capacitance and cyclic stability. This novel material could be a promising choice for electrodes in electronic appliances and electric vehicles.
ELECTROCHIMICA ACTA
(2021)
Review
Biochemistry & Molecular Biology
Asif Saud, Haleema Saleem, Syed Javaid Zaidi
Summary: Membrane-based desalination is the best solution for water shortage issues globally, and nanocellulose, as a promising green material, shows great potential in membrane development for desalination application.
Article
Chemistry, Multidisciplinary
Syarifah Nazirah Wan Ikhsan, Norhaniza Yusof, Farhana Aziz, Ahmad Fauzi Ismail, Norazanita Shamsuddin, Juhana Jaafar, Wan Norharyati Wan Salleh, Pei Sean Goh, Woei Jye Lau, Nurasyikin Misdan
Summary: This study successfully synthesized a functionalized nanocomposite coating with simultaneous hydrophilic and oleophobic properties for improving the efficiency of polymer membranes in separating oil-in-water wastewater. The coating, prepared via sol-gel technique and optimized through various characterizations and Response Surface Modification, exhibited high hydrophilicity and enhanced oleophobicity, with water contact angle of 11 degrees and oil contact angle of 171.3 degrees.
Article
Biochemistry & Molecular Biology
Nor Akalili Ahmad, Pei Sean Goh, Nurfirzanah Azman, Ahmad Fauzi Ismail, Hasrinah Hasbullah, Norbaya Hashim, Nirmala Devi Kerisnan Krishnan, Nasehir Khan E. M. Yahaya, Alias Mohamed, Muhammad Azroie Mohamed Yusoff, Jamilah Karim, Nor Salmi Abdullah
Summary: This study investigates the performance of a newly developed titania nanotube incorporated RO membrane for the removal of endocrine-disrupting compounds (EDCs) at low concentrations. The membrane modified with 0.01% of TNT showed significantly improved permeability and rejection efficiency for BPA and caffeine. Additionally, the 0.01 TFN membrane demonstrated higher hydrophilicity and smoother surface, leading to reduced membrane fouling during long-term filtration.
Review
Environmental Sciences
Pei Sean Goh, Woei Jye Lau, Ahmad Fauzi Ismail, Zahra Samawati, Yong Yeow Liang, Devagi Kanakaraju
Summary: Pesticides are major pollutants in waterways, posing a significant threat to aquatic organisms and ecosystems. Bioremediation using microalgae to convert pesticides into harmless or less harmful compounds has become a promising strategy for pesticide treatment, offering advantages such as simultaneous wastewater treatment, nutrient recovery, and reduced toxic sludge formation.
Review
Chemistry, Multidisciplinary
Pei Sean Goh, Zahra Samavati, Ahmad Fauzi Ismail, Be Cheer Ng, Mohd Sohaimi Abdullah, Nidal Hilal
Summary: Membrane technology has gained popularity in industries for separation processes, desalination, and wastewater treatment. The development of nanocomposite membranes that merge nanotechnology and membrane technology has become a rapidly growing research area, motivated by the need for high-performance liquid separation membranes. The unique morphology and topology of nanostructured materials, such as TiO2, have attracted attention due to their hydrophilicity, antibacterial, and photocatalytic properties. This review provides an overview of the modifications of liquid separation membranes using TiO2 as an example of multidimensional nanomaterials, discussing their performance and advantages.
Article
Chemistry, Multidisciplinary
Haleema Saleem, Pei Sean Goh, Asif Saud, Mohammad Aquib Wakeel Khan, Nazmin Munira, Ahmad Fauzi Ismail, Syed Javaid Zaidi
Summary: This study presents the fabrication of a thin-film composite (TFC) membrane with graphene quantum dots (GQDs) derived from banyan tree leaves for water treatment and desalination. The developed membrane shows improved surface smoothness, hydrophilicity, water flux, salt rejection, and chlorine resistance compared to traditional TFC membranes. This research demonstrates the potential of using GQD-TFC membranes in desalination and water treatment applications.
Review
Biochemistry & Molecular Biology
Pei Sean Goh, Nor Akalili Ahmad, Jun Wei Lim, Yong Yeow Liang, Hooi Siang Kang, Ahmad Fauzi Ismail, Gangasalam Arthanareeswaran
Summary: The use of microalgae for wastewater remediation and nutrient recovery addresses the need for a circular bioeconomy, providing solutions for water and energy resource depletions. Membrane photobioreactors (MPBRs) have shown great potential in integrating microalgae-based wastewater treatment and nutrient recovery, paving the way for large-scale implementation of membrane technology.
Editorial Material
Chemistry, Multidisciplinary
Ahmad Fauzi Ismail, Pei Sean Goh, Norhaniza Yusof
Article
Biochemistry & Molecular Biology
En Qi Lim, Mei Qun Seah, Woei Jye Lau, Hasrinah Hasbullah, Pei Sean Goh, Ahmad Fauzi Ismail, Daryoush Emadzadeh
Summary: Many commercial nanofiltrations (NF) and reverse osmosis (RO) membranes were evaluated for their efficiency in removing phthalates from water sources. It was found that the NF3 membrane showed the best performance in removing phthalates regardless of pH, due to its surface properties and appropriate pore size. Additionally, the NF3 membrane exhibited higher water flux compared to the RO membranes. However, further research is needed to investigate the effects of other compounds on membrane performance.
