Article
Polymer Science
Yunwei Wang, Li Li, Yiming Wang, Qingsong Yang, Zhishuang Ye, Liang Sun, Fan Yang, Xuhong Guo
Summary: The study systematically investigated the effect of counterions on interactions among SPB particles, revealing the mechanisms of counterions on the interactions and local ordered structure among PAA chains in concentrated SPBs by combining SAXS, WAXS, and rheology techniques.
Article
Chemistry, Multidisciplinary
Liang Sun, Haoya Han, Zhiyong Liu, Zhinan Fu, Chen Hua, Enguang Ma, Jiangtao Guo, Jichang Liu, Li Li, Bo Fang, Xuhong Guo
Summary: The distribution and stability of nanosized gold nanoparticles in spherical polymer brushes were studied, and small-angle X-ray scattering was validated as an effective characterization method.
Article
Polymer Science
Ziyu Zhang, Yuhua Zhang, Yang Tian, Zhinan Fu, Jiangtao Guo, Guofeng He, Li Li, Fang Zhao, Xuhong Guo
Summary: This paper reports the successful continuous preparation of nanosized spherical polyelectrolyte brushes (SPBs) in a self-made microreactor. The effects of residence time, monomer concentration, and feed ratios on the conversion of monomers and SPB structures were investigated. The SPBs obtained in the microreactor exhibited a short reaction time, narrow size distribution, and effective inhibition of calcium carbonate scale.
Article
Engineering, Chemical
Chen Hua, Ziwei Li, Kaimin Chen, Liang Sun, Liang Yu, Xuhong Guo
Summary: Zwitterionic polymer brushes are widely used as hydrophilic and antifouling materials, but they still exhibit adsorption for proteins and other substances in practical application. In this study, a simple and efficient method was employed to prepare zwitterionic spherical polymer brushes and study their interaction with proteins. The findings have important implications for the development of zwitterionic materials with controllable adsorption and desorption of proteins.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Review
Chemistry, Physical
Liam R. J. Scarratt, Gregor Trefalt, Michal Borkovec
Summary: This article discusses interactions between charged interfaces in concentrated suspensions of charged nanoparticles or solutions of polyelectrolytes. Like-charged situations result in a repulsive structure, while oppositely charged situations lead to a saturated layer causing charge reversal.
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
(2021)
Article
Polymer Science
Yifan Guo, Lianwei Li, Jinxian Yang
Summary: In this study, the influence of the topological effect on the complexation between polyelectrolytes and divalent ions was investigated using a combination of static light scattering, dynamic light scattering, and atomic force microscopy. The results showed that the intrachain interaction was weaker in bottlebrush samples compared to linear samples, while the interchain interaction displayed the opposite trend. The addition of Ca2+ led to a conformational change in the linear sample, whereas the overall conformations of the bottlebrush samples remained almost unchanged.
Article
Engineering, Mechanical
Tingting Zhang, Qi Lu, Xiaozhi Zhang, Shujuan Liu, Qian Ye, Feng Zhou
Summary: Polyelectrolyte brush-functionalized COF nanosheets with fine dispersion stability in water were successfully prepared. As a water-based lubricant additive, it effectively reduces friction and wear and exhibits remarkable lubrication performance.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Engineering, Chemical
Yuhua Zhang, Ziyu Zhang, Yang Tian, Zhinan Fu, Chen Hua, Li Li, Fang Zhao, Xuhong Guo
Summary: In this study, a two-step continuous flow strategy was designed to construct PS@HMEM core-shell nanoparticles in a microreactor. The structure of PS@HMEM core-shell nanoparticles was characterized and it was found that feeding through a single or two streams had a significant advantage for optimization. This work provides a new strategy for synthesizing other functional nanoparticles.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Dongjiu Xie, Oumeima Jouini, Shilin Mei, Ting Quan, Yaolin Xu, Zdravko Kochovski, Yan Lu
Summary: The hollow C@MnO nanoparticles can serve as highly efficient sulfur host materials, providing an effective solution to suppress the shuttle effect in Li-S battery.
Article
Materials Science, Biomaterials
Chen Hua, Kaimin Chen, Xuhong Guo
Summary: Glycoproteins are important in biological activities and disease diagnosis, and a facile and eco-friendly method to fabricate spherical polymer brushes with multiple boronic acid groups for glycoprotein separation has been developed. The material shows fast binding speed and high capacity for glycoproteins under physiological conditions, indicating potential for disease diagnosis.
JOURNAL OF MATERIALS CHEMISTRY B
(2021)
Article
Polymer Science
Ekaterina B. Zhulina, Oleg V. Borisov
Summary: We studied the dispersion of cylindrical polyelectrolyte brushes with rigid backbones and polymer-decorated nanorods with tunable solubility. The thermodynamic stability of the dispersions was affected by the brush-forming PE chains. We focused on the conformational transition caused by thermal and deionization stimuli, which resulted in the loss of dispersion stability in weakly ionized polyion-decorated nanorods. Theoretical predictions were compared with experimental results to provide rationalization and semi-quantitative interpretation.
Article
Chemistry, Physical
Kazuhiko Matsumoto, Jingyuan Zhang, Nozomi Yoneda, Koma Numata, Kazuki Okuno, Rika Hagiwara
Summary: Concentrated electrolytes have shown great potential in electrochemical deposition. In this study, electrodeposition of Cr metal using a concentrated aqueous solution of Cr(II) (4.0 mol kg-1) without any additives was successfully achieved. The effects of concentration, current density, and agitation on the deposition process were investigated.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Polymer Science
Michael T. Kelly, Ethan W. Kent, Bin Zhao
Summary: Stepwise conformational transitions of molecular bottlebrushes were achieved using two distinct stimuli-responsive polymers and PEO as side chains. The transitions were driven by pH-induced soluble-to-insoluble and/or temperature-triggered lower critical solution temperature transitions of the responsive side-chain polymers.
Article
Biochemistry & Molecular Biology
Chiaki Yoshikawa, Keita Sakakibara, Punnida Nonsuwan, Tomohiko Yamazaki, Yoshinobu Tsujii
Summary: A simple and versatile method for fabricating nonbiofouling coatings using well-defined bottlebrushes instead of CPBs is reported in this study. The CPB-type bottlebrush films showed significantly better nonbiofouling characteristics than those of the SDPB-type bottlebrush films.
Article
Polymer Science
Yiming Yang, Di Jia
Summary: Compared to the charge-charge interaction, the role of the dipole-dipole interaction has long been ignored in the phase behaviors of charged macromolecules in solutions. This perspective introduces the unacknowledged role of dipole-dipole interaction in the phase behaviors of charged macromolecular solutions, which can form complex, self-regulating structures with various applications. It sheds light on how charged biomacromolecules such as DNA, RNA, and proteins assemble life's basic and coherent structures and discusses recent achievements and merging trends in the phase behaviors of charged macromolecules in solutions.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Environmental
Jiahao Zhang, Shengyu Bai, Zhongqi Li, Guanyao Gu, Hucheng Wang, Lai Wei, Xun Sun, Fuzhen Xuan, Xuhong Guo, Yiming Wang
Summary: In this study, we demonstrate a reversible phase transition of poly(N-isopropylacrylamide) (PNIPAm) in response to light instead of temperature through a simple signal transformation strategy. By using a photoacid and PNIPAm-based copolymers, the lower critical solution temperature (LCST) of the copolymers can be reversibly changed upon switching on/off light, resulting in a fast (<0.5 min) and reversible phase transition without changing the ambient temperature. This concept enables the fabrication of light-controlled dynamic patterns and conceptually smart soft actuators composed of the copolymers, offering potential for the development of new non-contact smart objects with adaptive responsiveness.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Yinglin Zhang, Long Chen, Bo Yan, Fuping Zhang, Yulin Shi, Xuhong Guo
Summary: The utilization of hazardous textile sludge as a precursor for energy production has significant practical implications for sustainable economic and environmental development. In this study, a novel Cu8S5/NSC catalyst with abundant mass transfer channel was successfully designed through direct pyrolysis of textile sludge waste. The catalyst exhibited excellent electrocatalytic activity and stability, outperforming the benchmark Pt/C||RuO2 in water splitting for energy production.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Wenting Fan, Fang Zhao, Ming Chen, Jian Li, Xuhong Guo
Summary: A new microreactor with continuous serially connected micromixers (CSCM) was developed for coprecipitation synthesis of Fe3O4 nanoparticles. Numerical simulation revealed that the V-typed and U-typed CSCM microchannels exhibited better mixing performance due to the promotion of Dean vortices. Fe3O4 nanoparticles synthesized in the V-typed microchannel possessed better dispersity, uniformity, and crystallinity compared to those obtained in the capillary microreactor. The new CSCM microreactor can be a potent device for intensifying the synthesis of similar inorganic nanoparticles.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Engineering, Manufacturing
Kedong Zhang, Zhihao Li, Shanshan Wang, Peng Wang, Yuping Zhang, Xuhong Guo
Summary: In this study, a new nanofluid (Fe3O4@CNTs nanofluid) was prepared and its coupling effect with micro-texture on the cutting performance of TiC ceramic tools under the action of a magnetic field was revealed. The results showed that TTC + FC-0.5 exhibited lower cutting forces and surface roughness compared to TC + F-0.5, with further improvements at higher magnetic field strengths.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Materials Science, Multidisciplinary
Jiaxiong Li, Changhao Yan, Hucheng Wang, Erfu Lu, Yiming Wang, Xuhong Guo, Jie Wang
Summary: Chemically fueled smart supramolecular gels with dynamic gel-sol-gel transition behavior driven by the consumption of biocompatible cyclodextrin (CD) were developed. The gel-sol-gel transition process is highly dynamic and tunable, and the gel state can be maintained after the depletion of the fuel. This research may contribute to the development of biocompatible non-equilibrium materials for high-tech applications, especially in the field of biomedicine.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Agriculture, Multidisciplinary
Enguang Ma, Zhinan Fu, Kai Chen, Liang Sun, Yuhua Zhang, Zhiyong Liu, Li Li, Xuhong Guo
Summary: A novel enzyme-responsive fluorescent nanopesticide was developed using a continuous nanoprecipitation method. The nanopesticide demonstrated good water dispersibility, storage stability, and enhanced wettability compared to commercial formulations. The controlled release of pesticides was achieved through protein degradation caused by trypsin. By tracking fluorescence, the deposition, distribution, and transport of the nanopesticide on target plants were accurately monitored. Furthermore, the nanopesticide showed high control efficacy against Plutella xylostella L. and has promising potential in sustainable plant protection due to its eco-friendly composition and absence of organic solvent.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Liang Sun, Zhinan Fu, Enguang Ma, Li Li, Zhiyong Liu, Xuhong Guo
Summary: We report on the design and synthesis of hollow silica-supported gold nanocatalysts via an in-situ colloidal polyelectrolyte template strategy. The resulting hollow SNPs@AuNPs exhibited superior catalytic activity and reusability for the reduction of p-nitrophenol by sodium borohydride in aqueous solution. This synthetic strategy can potentially be extended to fabricate multifunctional nanomaterials with diverse compositions for applications in catalysis, energy, and other important domains.
Article
Materials Science, Ceramics
Yanliang Ji, Simon Becker, Zichen Lu, Alexander Mezhov, Regine von Klitzing, Schmidt Wolfram, Dietmar Stephan
Summary: This study reveals the significant influence of resting time on the rheological properties of cement suspensions, which is closely related to non-absorbed polycarboxylate superplasticizers (PCEs) size variation. Adsorbed PCE during resting tends to bridge particles instead of dispersing them, leading to an increased yield stress.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Chemistry, Multidisciplinary
Zhinan Fu, Enguang Ma, Zheng Yang, Li Li, Xuhong Guo
Summary: This study reports a novel continuous-flow nanoprecipitation strategy for synthesizing hollow mesoporous organosilica nanoparticles (MONPs) with highly uniform and tailored properties. The synthesized hollow nanoparticles possess a large surface area, narrow size distribution, large hollow cavity, and thin shell, and exhibit degradability through the incorporation of organic moieties. Furthermore, the potential of these hollow nanoparticles as drug carriers is demonstrated.
Article
Chemistry, Physical
Zhinan Fu, Lizhen Wang, Weijun Zhang, Xuan Tang, Wenxin Xia, Jinxia Li, Kuanwen Wang, Lihui Zhou, Xuhong Guo, Sheng Dai
Summary: ZIF-8-derived single atom catalysts with different hollow carbon nanoarchitectures are synthesized using a polyelectrolyte brush-templated-growth approach. Fe, Co, Cu, and Pd single-atom catalysts are successfully synthesized, with Fe catalysts showing superior oxygen reduction reaction performance. The study explores the morphology and structure of the derived materials, revealing the exposure of high-quality single-atom active sites and the promotion of mass transfer in the electrochemical process.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Biochemistry & Molecular Biology
Xuexue Liang, Ge Bai, Chun Hua Niu, Zhong Wei, Zhi Gang Lei, Kai Chen, Xuhong Guo
Summary: Plant diseases caused by fungi and bacteria are a major threat to crop production and food security. In this study, CMCS/PA/Zn2+ nanoparticles were developed using carboxymethyl chitosan, phytic acid, and metal ions via flash nanoprecipitation. These nanoparticles showed outstanding antibacterial and antifungal activities and can release Zn2+ in an acidic environment, making them environmentally-friendly and safe agricultural antimicrobials.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Analytical
Chuanlu Ding, Hao Xing, Xuhong Guo, Huihui Yuan, Cuihua Li, Xiulan Zhang, Xin Jia
Summary: Multifunctional label-free N-doped ratiometric fluorescence carbon dots (N-CDs) are developed from tea leaves extract and o-phenylenediamine by a mild solvothermal method. The N-CDs have nitrogen- and oxygen-containing functional groups on the surface, providing excellent hydrophilia. The N-CDs exhibit two completely independent ratiometric fluorescence channels for detecting Hg2+ and H2O, showing potential in multifunctional detection.
ANALYTICAL METHODS
(2023)
Article
Chemistry, Multidisciplinary
Enguang Ma, Zhinan Fu, Liang Sun, Kai Chen, Zhiyong Liu, Zhong Wei, Li Li, Xuhong Guo
Summary: In this study, a flash nanoprecipitation (FNP) method using a versatile multi-inlet vortex mixer (MIVM) was used to fabricate deformable hollow mesoporous organosilica nanoparticles (HMONs). The synthesized HMONs had high surface area (571.1 m(2) g(-1)), narrow size distribution (PDI = 0.03), and large hollow cavity. The particle sizes (457-629 nm) of the HMONs could be controlled by adjusting the mixing Reynolds (Re) number. Transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS) results revealed the deformability of the HMONs in solution. The deformable HMONs, with lower Young's modulus (EY) of 53.20 MPa compared to non-deformable HMONs (176.55 MPa), showed improved affinity to the leaf surface and enhanced insecticidal activity against Meloidogyne incognita, demonstrating great potential for sustainable agricultural applications.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Polymer Science
Xin Liu, Xuhong Guo, Qi Liao
Summary: In this study, an algorithm for accurately estimating viscosity is developed using molecular dynamics simulations and the Green-Kubo formula. This algorithm can be applied to complex systems with long correlations, such as macromolecular and biological simulation systems.
