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学者姓名：林小城
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Abstract ：
Dispersion of SiO2 particles in aqueous solutions using block copolymers remains challenging, particularly due to degradation in highly alkaline environments and difficulty in achieving high solid content. Herein, we report the synthesis of an anionic block copolymer, poly(glyceryl methacrylate-b-sodium p-styrenesulfonate) (PGGMA-b-PSSS), containing abundant hydroxyl groups, via reversible addition-fragmentation chain transfer (RAFT) polymerization of sodium p-styrenesulfonate and glycidyl methacrylate monomers. The hydroxyl groups in PGGMA-b-PSSS serve as anchoring points, producing a steric hindrance effect between SiO2 particles by interacting with silanol groups on the particle surface. Furthermore, electrostatic repulsion from the poly(sodium p-styrenesulfonate) block significantly enhances the dispersibility of PGGMA-b-PSSS in aqueous systems. A systematic investigation of the dispersibility of SiO2 particles was conducted under various compositions and concentrations of PGGMA-b-PSSS across a wide alkaline pH range. Our results show the effective dispersion of sub-micron and micron-sized SiO2 particles, achieving solid contents of up to 35 wt% over a wide pH range (3–13). © 2025 Elsevier B.V.
Keyword ：
Alkalinity Alkalinity Anionic polymerization Anionic polymerization Block copolymers Block copolymers Dispersions Dispersions Living polymerization Living polymerization
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| GB/T 7714 | You, Jiejian , Jiang, Qing , Sun, Shihao et al. Efficient dispersion of high-content SiO2 particles across a broad pH range with anionic block copolymer in aqueous solution: An experiment and mechanism study [J]. | Journal of Molecular Liquids , 2025 , 429 . |
| MLA | You, Jiejian et al. "Efficient dispersion of high-content SiO2 particles across a broad pH range with anionic block copolymer in aqueous solution: An experiment and mechanism study" . | Journal of Molecular Liquids 429 (2025) . |
| APA | You, Jiejian , Jiang, Qing , Sun, Shihao , Lin, Xiaocheng , Sui, Jincheng , Liao, Xiafeng et al. Efficient dispersion of high-content SiO2 particles across a broad pH range with anionic block copolymer in aqueous solution: An experiment and mechanism study . | Journal of Molecular Liquids , 2025 , 429 . |
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It is a waste of gallium resource to discard the high aluminum-containing gallium electrolyte. The Ga/Al separation is difficult by only using lime precipitation because of high gallium loss rate. The present study employs an adsorption resin LSC-600P to recover gallium in the simulated gallium electrolyte and then uses lime to remove aluminum, leaving only alkali solution recycled. The results showed that the aluminum removal rate in the gallium electrolyte was 93.12% under the conditions of reaction temperature of 85 degrees C, addition of lime 2 times to the theoretical molar ratio of calcium to aluminum, reaction time of 3 h and stirring speed of 600 r/min. In the experiments of gallium adsorption, after six adsorption-desorption cycles, the adsorption rate of gallium by LSC-600P resin still reached 98.6%, and the adsorption rate of aluminum was lower than 4.5%. In the desorption process, the desorption rate of gallium was more than 98%, and the aluminum content in the stripping solution after desorption was almost negligible. The resin exhibits high adsorption affinity for gallium while demonstrating minimal adsorption for aluminum.
Keyword ：
Adsorption Adsorption Lime precipitation Lime precipitation LSC-600P LSC-600P Simulated gallium electrolyte Simulated gallium electrolyte
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| GB/T 7714 | Pan, Qi , Zhu, Zhen , Lin, Xiaocheng et al. Adsorption-Precipitation Method to Recover Gallium, Aluminum and Alkali from the Gallium Electrolyte in Zinc Refinery Plant [J]. | TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS , 2025 , 78 (4) . |
| MLA | Pan, Qi et al. "Adsorption-Precipitation Method to Recover Gallium, Aluminum and Alkali from the Gallium Electrolyte in Zinc Refinery Plant" . | TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS 78 . 4 (2025) . |
| APA | Pan, Qi , Zhu, Zhen , Lin, Xiaocheng , Guo, Bao , Jiang, Kaixi . Adsorption-Precipitation Method to Recover Gallium, Aluminum and Alkali from the Gallium Electrolyte in Zinc Refinery Plant . | TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS , 2025 , 78 (4) . |
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Diffusion dialysis (DD) presents a highly promising and cost-efficient approach for acid recovery, yet its performance is often hindered by the acid permeability of anion exchange membranes (AEMs). To address this challenge, a one-step approach has been developed to fabricate porous AEMs. Using brominated polyphenylene oxide (BPPO) as the porous base membrane, imidazole is employed for in-situ crosslinking and cationization. This approach not only retains the inherent porosity (>63.5 %) of the base membrane but also achieves an exceptionally thin selective layer (<0.3 mu m), thereby creating abundant free space volume. Through a concurrent enhancement of ion transport sites and crosslinking density, the membrane effectively breaks acid permeability-selectivity trade-off. The optimal IPPO-20h AEM demonstrates a remarkable increase in both the acid dialysis coefficient (U-H+ = 34.1 x 10(-3) m/h) and separation factor (S-H+/(Fe)2+ = 573.8) in the HCl/FeCl2 system, with enhancements of 4- and 31-fold, respectively, compared to the commercial DF120 AEM, at 25 degrees C. This high-performance AEM, synthesized via a straightforward and mild process, offers significant potential for large-scale acid recovery applications.
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| GB/T 7714 | Shao, Haiyang , Tan, Zhengke , Cheng, Yafei et al. One-step fabrication of porous anion exchange membranes for acid recovery breaking acid permeability-selectivity trade-off [J]. | JOURNAL OF MEMBRANE SCIENCE , 2025 , 723 . |
| MLA | Shao, Haiyang et al. "One-step fabrication of porous anion exchange membranes for acid recovery breaking acid permeability-selectivity trade-off" . | JOURNAL OF MEMBRANE SCIENCE 723 (2025) . |
| APA | Shao, Haiyang , Tan, Zhengke , Cheng, Yafei , Yue, Xiang'an , Yuan, Lei , Jian, Weixiong et al. One-step fabrication of porous anion exchange membranes for acid recovery breaking acid permeability-selectivity trade-off . | JOURNAL OF MEMBRANE SCIENCE , 2025 , 723 . |
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Sustainable chemistry principles underscore the pivotal role of solvent-free processes in the fabrication of anion exchange membranes (AEMs). This study presents an eco-friendly, solvent-free approach for AEM preparation via photopolymerization, utilizing 4-vinylpyridine as the monomer and divinylbenzene as the crosslinking agent. The polymerization, conducted at ambient temperature and completed within 20 min, was followed by post-polymerization N-alkylation with ethyl bromide to introduce pyridinium groups. The precise modulation of crosslinking and N-alkylation levels enabled meticulous control over the membranes' intrinsic chemical properties and their functional effectiveness in electrodialysis desalination. The optimal membrane's area resistance was recorded at 1.09 Omega cm2, while its transport number reached 0.965, outperforming the commercial AMV AEM in desalination efficacy. This work underscores the promise of solvent-free photopolymerization as a sustainable, high-performance strategy for fabricating AEMs, providing substantial advancements in both environmental sustainability and electrodialysis desalination performance.
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| GB/T 7714 | Cheng, Yafei , Zhang, Huanhuan , Yuan, Lei et al. Sustainable synthesis of high-performance anion exchange membranes for electrodialysis desalination via photopolymerization [J]. | JOURNAL OF MEMBRANE SCIENCE , 2025 , 721 . |
| MLA | Cheng, Yafei et al. "Sustainable synthesis of high-performance anion exchange membranes for electrodialysis desalination via photopolymerization" . | JOURNAL OF MEMBRANE SCIENCE 721 (2025) . |
| APA | Cheng, Yafei , Zhang, Huanhuan , Yuan, Lei , Shao, Haiyang , Lin, Xiaocheng . Sustainable synthesis of high-performance anion exchange membranes for electrodialysis desalination via photopolymerization . | JOURNAL OF MEMBRANE SCIENCE , 2025 , 721 . |
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To enrich and recover low-concentration (10 1 - 10 2 ppm) rare earth elements from ores and industrial wastes, high phase-ratio solvent extraction is favored. However, high phase-ratio solvent extraction is limited by low mass transfer efficiency in the continuous phase due to the insufficient contact between large volume continuous phase and sparse droplets. To realize efficient solvent extraction of rare earth ions from low concentrations (100 ppm) aqueous phase to oil phase with high phase ratio, we introduce a type of microchannel with sequential pore-throat geometry. This sequential pore-throat geometry creates capillary barriers and effectively retains dispersed droplets, leading to a reduction of apparent water - oil volume ratio and thereby major mass transfer enhancement in the continuous phase. We experimentally highlight its advantage over classic uniform microchannel for solvent extraction of rare earth ions under high phase ratios: in a double pore-throat microchannel, extraction equilibrium can be reached within 30 s under high phase ratios of 50 - 250; for an extreme phase ratio of 500:1, extraction efficiency can achieve 77 % within a quadruple pore-throat channel, while that within a uniform microchannel is only below 40 %. The superiority of sequential pore-throat microchannel for extraction at a high phase ratio is reproduced using different types of rare earth ions. We thus conclude that sequential porethroat geometry can drastically promote the performance of microfluidic-based solvent extraction at extreme phase ratios, for rare earth enrichment and potentially for other relevant applications.
Keyword ：
High phase ratio High phase ratio Microfluidics Microfluidics Rare earth elements Rare earth elements Solvent extraction Solvent extraction
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| GB/T 7714 | Ge, Xue-hui , Zhang, Huafeng , Huang, Xiaolian et al. Enhanced solvent extraction of rare earth elements in ultra-high phase ratio with pore-throat microchannels [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 353 . |
| MLA | Ge, Xue-hui et al. "Enhanced solvent extraction of rare earth elements in ultra-high phase ratio with pore-throat microchannels" . | SEPARATION AND PURIFICATION TECHNOLOGY 353 (2024) . |
| APA | Ge, Xue-hui , Zhang, Huafeng , Huang, Xiaolian , Liu, Zihan , Lin, Xiaocheng , Xu, Ke . Enhanced solvent extraction of rare earth elements in ultra-high phase ratio with pore-throat microchannels . | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 353 . |
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Microfluidic synthesis has emerged as a promising method for synthesizing metal-organic frameworks (MOFs). It overcomes the limitations of the traditional solvothermal method to regulate the structure and function of the MOFs. This study synthesized various MOFs with different structures and functions by controlling the reaction time and the ratio of metal ions to organic ligands through microfluidics and investigated their CO2 adsorption properties. The results showed that the microfluidic synthesized defective and hierarchical pore MOF-808 improved the adsorption performance of CO2 by nearly 110% and 30%, respectively, compared with solvothermal synthesized MOF-808.
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| GB/T 7714 | Ge, Xuehui , Liu, Zihan , Wei, Nanjie et al. Microfluidic Synthesis of Defective and Hierarchical Pore Zr Metal-Organic Framework Materials and CO2 Adsorption Performance Study [J]. | CRYSTAL GROWTH & DESIGN , 2024 , 24 (21) : 9084-9096 . |
| MLA | Ge, Xuehui et al. "Microfluidic Synthesis of Defective and Hierarchical Pore Zr Metal-Organic Framework Materials and CO2 Adsorption Performance Study" . | CRYSTAL GROWTH & DESIGN 24 . 21 (2024) : 9084-9096 . |
| APA | Ge, Xuehui , Liu, Zihan , Wei, Nanjie , Lin, Xiaocheng , Hu, Cejun . Microfluidic Synthesis of Defective and Hierarchical Pore Zr Metal-Organic Framework Materials and CO2 Adsorption Performance Study . | CRYSTAL GROWTH & DESIGN , 2024 , 24 (21) , 9084-9096 . |
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D-Allulose, a C-3 epimer of d-fructose, has great market potential in food, healthcare, and medicine due to its excellent biochemical and physiological properties. Microbial fermentation for d-allulose production is being developed, which contributes to cost savings and environmental protection. A novel metabolic pathway for the biosynthesis of d-allulose from a d-xylose-methanol mixture has shown potential for industrial application. In this study, an artificial antisense RNA (asRNA) was introduced into engineered Escherichia coli to diminish the flow of pentose phosphate (PP) pathway, while the UDP-glucose-4-epimerase (GalE) was knocked out to prevent the synthesis of byproducts. As a result, the d-allulose yield on d-xylose was increased by 35.1%. Then, we designed a d-xylose-sensitive translation control system to regulate the expression of the formaldehyde detoxification operon (FrmRAB), achieving self-inductive detoxification by cells. Finally, fed-batch fermentation was carried out to improve the productivity of the cell factory. The d-allulose titer reached 98.6 mM, with a yield of 0.615 mM/mM on d-xylose and a productivity of 0.969 mM/h.
Keyword ：
d-allulose d-allulose Escherichia coli Escherichia coli fermentation fermentation metabolic engineering metabolic engineering
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| GB/T 7714 | Guo, Qiang , Zheng, Ling-Jie , Zheng, Shang-He et al. Enhanced Biosynthesis of d-Allulose from a D-Xylose-Methanol Mixture and Its Self-Inductive Detoxification by Using Antisense RNAs in Escherichia coli [J]. | JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY , 2024 , 72 (26) : 14821-14829 . |
| MLA | Guo, Qiang et al. "Enhanced Biosynthesis of d-Allulose from a D-Xylose-Methanol Mixture and Its Self-Inductive Detoxification by Using Antisense RNAs in Escherichia coli" . | JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 72 . 26 (2024) : 14821-14829 . |
| APA | Guo, Qiang , Zheng, Ling-Jie , Zheng, Shang-He , Zheng, Hui-Dong , Lin, Xiao-Cheng , Fan, Li-Hai . Enhanced Biosynthesis of d-Allulose from a D-Xylose-Methanol Mixture and Its Self-Inductive Detoxification by Using Antisense RNAs in Escherichia coli . | JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY , 2024 , 72 (26) , 14821-14829 . |
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According to the hydration size and charge property of separated ions, the transport channel can be constructed to achieve precision ion separation, but the ion geometry as a separation parameter to design the channel structure is rarely reported. Herein, a reverse-selective anion separation membrane composed of a metal-organic frameworks (MOFs) layer with a charged "hourglass" channel as an ion-selective switch to manipulate oxoanion transport is developed. The gate in "hourglass" with tetrahedral geometry similar to the oxoanion (such as SO2- 4, Cr 2O2- 7, and MnO- 4) boosts the transmission effect oxoanion much larger than Cl- through geometric matching and Coulomb interaction. Specific channel structure exhibits an abnormal selectivity for SO2- 4/Cl- of 20, Cr 2O2- 7/Cl- of 6.6, and MnO- 4/Cl- of 4.0 in a binary-ion system. The transfer behavior of SO2- 4 in the channel revealed by molecular dynamics simulation and density functional theory calculation further indicates the mechanism of the abnormal separation performance. The universality of the membrane structure is validated by the formation of different nitrogen-containing modified layers, which also achieves in situ growth of the MOFs layer, and exhibits similar reversal separation performance. The geometric configuration control of ion transport channels presents a novel effective strategy to realize the precise separation of target ions. The metal-organic frameworks (MOFs) layer membrane with a charged "hourglass" gate exhibits high reverse-selectivity of oxoanion/Cl- ions and high flux of oxoanion. The free sulfate (F-SO2- 4) used to construct the gate utilizes the geometric matching and Coulomb interaction generated by its tetrahedral structure and charge to promote the transfer of oxoanions with similar geometric configurations. image
Keyword ：
anion selectivity anion selectivity channel configuration channel configuration geometric matching geometric matching metal-organic frameworks metal-organic frameworks
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| GB/T 7714 | Wu, Bin , Yan, Yunfei , Chu, Xiaorui et al. Reverse-Selective Anion Separation Relies on Charged "Hourglass" Gate [J]. | SMALL , 2024 , 20 (45) . |
| MLA | Wu, Bin et al. "Reverse-Selective Anion Separation Relies on Charged "Hourglass" Gate" . | SMALL 20 . 45 (2024) . |
| APA | Wu, Bin , Yan, Yunfei , Chu, Xiaorui , Miao, Jibin , Ge, Qianqian , Lin, Xiaocheng et al. Reverse-Selective Anion Separation Relies on Charged "Hourglass" Gate . | SMALL , 2024 , 20 (45) . |
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The electrocatalytic oxidation of 5-hydroxymethylfurfural (HMF) represents a promising pathway for producing biomass-derived value-added chemicals. Nevertheless, the use of extremely expensive ion exchange membranes (IEMs) as separators significantly sacrifices the economic benefit in large-scale applications. Herein, we report a cost-effective non-fluorine cation exchange membrane (CEM) by grafting sulfonic acid (-SO3- ) groups onto the aromatic side chain of the polyethersulfone (PES) polymer. By tuning the content of -SO3 - groups, the physicochemical properties of the resulting CEMs can be easily adjusted. Impressively, the optimal HBS-PES-1.0 CEM with fully grafted -SO3- groups can achieve a high HMF conversion of 100 %, FDCA selectivity of 98.0 %, and Faradaic efficiency of 98.3 % when used as the separator for electrocatalytic oxidation of HMF, surpassing that of the commercial Nafion 117 membrane (100 % HMF conversion, 98.1 % FDCA selectivity, and 97.4 % Faradaic efficiency). This study provides a cost-effective and high-performance CEM as a substitute for the expensive commercial membrane, paving the way to large-scale commercial applications of biomass upgrading through the electrolysis process.
Keyword ：
Biomass upgrading Biomass upgrading Cation exchange membrane Cation exchange membrane HMF electrocatalytic oxidation HMF electrocatalytic oxidation Side -chain type Side -chain type
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| GB/T 7714 | Zhang, Hongwei , Xu, Hao , Zhu, Zhen et al. Construction of non-fluorine side-chain cation exchange membranes for efficient 5-hydroxymethylfurfural electrocatalytic oxidation [J]. | JOURNAL OF MEMBRANE SCIENCE , 2024 , 706 . |
| MLA | Zhang, Hongwei et al. "Construction of non-fluorine side-chain cation exchange membranes for efficient 5-hydroxymethylfurfural electrocatalytic oxidation" . | JOURNAL OF MEMBRANE SCIENCE 706 (2024) . |
| APA | Zhang, Hongwei , Xu, Hao , Zhu, Zhen , Huang, Jinming , Zhang, Bowen , Cheng, Yafei et al. Construction of non-fluorine side-chain cation exchange membranes for efficient 5-hydroxymethylfurfural electrocatalytic oxidation . | JOURNAL OF MEMBRANE SCIENCE , 2024 , 706 . |
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Surfactant-stabilized multiphase emulsions are widely used. However, current studies on the dynamic adsorption of emulsions during flow are mainly focused on the droplet formation stage rather than the flow stage. In this study, the mass transfer of surfactants in microchannels during the droplet formation and flow phases (the overall process) was investigated and a mass transfer diffusion model and an adsorption kinetic model for emulsions were developed, which explained the mass transfer process in microchannels for low and high surfactant concentrations, respectively. Subsequently, dynamic interfacial tension values between the two phases were calculated using two surfactants (SDS and DTAB) to validate these models and the results were in good agreement with the experimental values. This study contributes to a deeper understanding of how surfactants diffuse throughout three-phase emulsions, thus shedding light on the mass transfer mechanisms inherent in these complex systems.
Keyword ：
dynamic mass transfer dynamic mass transfer microfluidic microfluidic model establishment model establishment surfactant surfactant three-phase emulsion structure three-phase emulsion structure
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| GB/T 7714 | Ge, Xue-hui , Jia, Bo , Shan, Zhiwei et al. The overall-process dynamic mass transfer research of surfactant at the three-phase emulsions interface [J]. | AICHE JOURNAL , 2024 , 71 (4) . |
| MLA | Ge, Xue-hui et al. "The overall-process dynamic mass transfer research of surfactant at the three-phase emulsions interface" . | AICHE JOURNAL 71 . 4 (2024) . |
| APA | Ge, Xue-hui , Jia, Bo , Shan, Zhiwei , Lin, Xiaocheng , Wang, Xiaoda . The overall-process dynamic mass transfer research of surfactant at the three-phase emulsions interface . | AICHE JOURNAL , 2024 , 71 (4) . |
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