Article
Biotechnology & Applied Microbiology
Vrinda Goel, Ruchika Tanwar, Uttam Mandal
Summary: Polyaniline was developed on polysulfone membrane surfaces through in situ polymerization to enhance hydrophilicity and anti-biofouling properties. The modified membrane containing 2% aniline showed the best performance in terms of hydrophilicity, permeability, protein rejection, and anti-biofouling ability. This technique proves to be a promising method for large-scale industrial applications.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2021)
Article
Polymer Science
Baoluo He, Qi Lu, Xiangyuan Zhao, Xiaozhi Zhang, Rong Mu, Wenbo Sheng, Bin Li, Shujuan Liu, Qian Ye, Feng Zhou
Summary: This study reports a facile method of gallium-based liquid metal (GLM) nanodroplets mediated surface-initiated atom transfer radical polymerization (SI-ATRP) for preparing polymer brushes on GLM surfaces. The feasibility of GLM surface modified SI-ATRP is confirmed by UV-vis spectra, which also indicates that the thickness and density of polymer brushes are crucial for successful ATRP on GLM nanodroplets surfaces. Polymer brushes modified GLM nanodroplets show potential applications such as friction reduction and oil-water emulsion separation.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Anne-Chantal Gouget-Laemmel, Nacim Zidelmal, Rafaela S. B. Soares, Nadine Barroca-Aubry, Diana Dragoe, Ludovic Costa, Benedicte Lepoittevin, Hanene Salmi-Mani, Mohamed Mellah, Catherine Henry-de-Villeneuve, Francois Ozanam, Emmanuelle Schulz, Philippe Roger
Summary: This study investigates the capacity of quantitative IR-FTIR spectroscopy to characterize the surface chemical modifications occurring during a surface-initiated controlled polymerization. The effects of different surface treatments on the density and degree of polymerization of the polymer chains are demonstrated through experiments.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zeeshan Arshad, Billel Salhi, Nadeem Baig, Isam H. Aljundi, Shaikh A. Ali
Summary: A novel mussel-inspired cationic amphiphilic terpolymer, PDDD, was introduced to improve the performance and characteristics of PVDF membranes for oil-in-water emulsion separations. The incorporation of PDDD into PVDF resulted in improved hydrophilicity and separation efficiencies, with a maximum of 99% for emulsion separation. Furthermore, the modified membranes showed enhanced anti-fouling characteristics, as indicated by a remarkable flux recovery ratio of up to 92%.
Article
Biophysics
Can Wang, Bingxian Lin, Yunren Qiu
Summary: By grafting sulfonated dihydroxypropyl chitosan onto the polysulfone membrane and introducing amino groups, a modified membrane was successfully prepared. The results showed that the hydrophilicity of the modified membrane was significantly improved and its compatibility with blood was confirmed.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Polymer Science
Sarina Mat Rosid, Abdellah Ajji, Hasrinah Hasbullah, Salmiah Jamal Mat Rosid, Ahmad Fauzi Ismail, Pei Sean Goh
Summary: The study used IONPs as nanofillers for PSf membranes and found that a 1% concentration of IONPs exhibited optimal performance, while PSf/IONPs with 25% PSf showed the best fiber thickness and diameter, porosity, and morphology.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Engineering, Chemical
Amirhosein Dashtbozorg, Ehsan Saljoughi, Seyed Mahmoud Mousavi, Shirin Kiani
Summary: In this study, hydrophilic MXene nanosheets were successfully synthesized and incorporated into PSF nanofiltration membranes. The addition of MXene nanosheets increased the membrane porosity, hydrophilicity, and tensile properties, leading to significantly improved rejection of salts and dye solutions by the nanofiltration membranes.
Review
Materials Science, Multidisciplinary
Andres B. Sanchez-Alvarado, Jackeline Iturbe-Ek, Narsimha Mamidi, Alan O. Sustaita
Summary: Nanomaterial-based hybrid devices have shown potential in environmental contaminant sensing, where polymer thin films are exploited as functional sensing materials. Covalently functionalized polymer films, produced through surface-initiated polymerizations, offer stability and the ability to tailor thickness. Copper-mediated CRP is a rapid technique that enhances the characteristics of surface-grafting polymer films for hybrid sensor devices.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Zhiyu Zheng, Jingwen Chen, Jiamin Wu, Min Feng, Lei Xu, Nina Yan, Hongde Xie
Summary: Functionalized biomass-based carbon nanoparticles were successfully prepared from agricultural wastes, showing excellent dispersibility and potential to improve the performance of polysulfone ultrafiltration membranes. The optimal addition of nanoparticles was found to be 0.4 wt% to avoid performance recession due to particle aggregation. These nanoparticles have the potential to enhance membrane separation performance and anti-fouling property with great simplicity and renewability.
Article
Polymer Science
Gianluca Gazzola, Irene Filipucci, Andrea Rossa, Krzysztof Matyjaszewski, Francesca Lorandi, Edmondo M. M. Benetti
Summary: Achieving tolerance toward oxygen is essential for the upscalable and technologically relevant processes of fabricating polymer brush-coatings. By judiciously tuning the reaction mixtures and polymerization setup, the compatibility of surface-initiated photoinduced atom transfer radical polymerization (SI-photoATRP) technique can be maximized. Through precise variation of reaction conditions, key parameters like the concentration of Cu-based catalyst and free alkyl halide initiator can be optimized to efficiently consume oxygen and yield uniform and thick brushes, even in more exposed polymerization mixtures.
Article
Chemistry, Multidisciplinary
Jaehoon Jeong, Himani Bisht, Suho Park, Yubin Hong, Gijeong Shin, Daewha Hong
Summary: In this study, a substrate-independent initiator film was developed to form an antifouling brush through surface-initiated polymerization. Inspired by melanogenesis, a tyrosine-conjugated bromide initiator (Tyr-Br) containing phenolic amine groups as the coating precursor and alpha-bromoisobutyryl groups as the initiator was synthesized. The Tyr-Br underwent melanin-like oxidation in the presence of tyrosinase to form an initiator film on various substrates, and an antifouling polymer brush was subsequently formed through air-tolerant activators regenerated by electron transfer for atom transfer radical polymerization (ARGET ATRP) of zwitterionic carboxybetaine. The entire surface coating process occurred under aqueous conditions without the need for organic solvents or chemical oxidants, allowing the formation of antifouling polymer brushes on different substrates.
Article
Polymer Science
Katherine J. Stawiasz, Chloe I. Wendell, Benjamin A. Suslick, Jeffrey S. Moore
Summary: The development of a photo-redox-initiated frontal ring-opening metathesis polymerization (FROMP) chemical system is reported. This system provides a well-controlled reaction front and extended pot life.
Review
Chemistry, Multidisciplinary
Daheng Wu, Wei Li, Tao Zhang
Summary: The surface-tethered polymer brush is a powerful approach for tailoring surface properties and has broad application prospects. The surface-initiated zerovalent metal-mediated controlled radical polymerization (SI-Mt(0)CRP) provides a simplified method for synthesizing diverse functional polymer brushes with high grafting densities over large areas. SI-Mt(0)CRP offers advantages such as oxygen tolerance, high controllability, retention of chain-end functionality, and facile recyclability of metal catalysts.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Polymer Science
Alicia Cintora, Florian Kafer, Chenyun Yuan, Christopher K. Ober
Summary: In this study, aqueous miniemulsion polymerization based on Activators regenerated by electron transfer (ARGET) atom transfer radical polymerization (ATRP) was used to investigate the effects of hydrophobicity of monomers on dispersity, molecular weight, and particle stability. The results showed that monomers with higher hydrophobicity exhibited narrower dispersity and better control, while monomers with higher hydrophilicity led to reduced emulsion stability. This research provides insights into controlled polymerizations of hydrophilic monomers using ARGET-ATRP in miniemulsion conditions, with implications for synthesis of polymer-grafted nanoparticles with hydrophilic corona.
JOURNAL OF POLYMER SCIENCE
(2022)
Article
Polymer Science
Yara Elgawady, Deepalekshmi Ponnamma, Mohammad K. Hassan, Samer Adham, Alamgir Karim, Mariam Al Ali Al-Maadeed
Summary: This study synthesized silver nanoparticles using silver nitrate and sodium bromide precursors, and in situ synthesized polysulfone-poly(ethylene-glycol) block copolymer in the presence of silver. The resulting nanocomposite exhibited improved mechanical properties and thermal stability, with the silver nanoparticles reinforcing the material. The electrospun fibers of the nanocomposite showed enhanced wettability, making it suitable for oil/water emulsion separation applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)