Article
Energy & Fuels
Yao Xie, Weimin Cheng, Haiming Yu
Summary: This study investigated the effects of HCl concentration and inorganic salt content on the performance of self-diverting acid using rheological measurement, dynamic light scattering, and infrared spectroscopy. The results showed that the steady-state viscosity and micellar length of the acid increased first and then decreased with the increase of HCl concentration. Additionally, the micellar length of the acid gradually increased with the increase of inorganic salt content.
Article
Polymer Science
Jian Tang, Takuya Katashima, Caidric Indaya Gupit, Xiang Li, Yoshiro Mitsukami, Yuki Yokoyama, Naoyuki Sakumichi, Ung -il Chung, Mitsuhiro Shibayama, Takamasa Sakai
Summary: The swelling behavior of polyelectrolyte gels is influenced by the ambient conditions, including the ionic pressure of the Gibbs-Donnan equilibrium and the conden-sation effect of counterions. This study investigated the swelling properties of polyelectrolyte gels in a divalent CaCl2 salt solution using model polyelectrolyte gels. The results showed that the swelling ratio increased with increasing pH, but the gel showed non-swellability independent of pH with increasing Ca2+ ion concentration.
Article
Polymer Science
Giuseppe Rosario Del Sorbo, Viviana Cristiglio, Daniel Clemens, Ingo Hoffmann, Emanuel Schneck
Summary: Aqueous mixtures of polyelectrolytes and oppositely charged surfactants can form clear and homogeneous solutions when one component is in excess, but macroscopic precipitates are formed around charge equilibrium. Near the phase boundary, nanometric polyelectrolyte/surfactant complexes can greatly increase the viscosity of aqueous solutions, governed by the composition and chemical nature of the polyelectrolyte and surfactant. The interaction between polycation JR 400 and sodium tetradecyl sulfate (STS) leads to a significant increase in viscosity, while no such increase is observed with sodium octyl sulfate (SOS) due to the absence of mixed aggregates.
Article
Engineering, Environmental
Yinuo Li, Tingting Wei, Long Chen, Kaixiang Wang, Yulin Shi
Summary: In this study, a salt/water system is developed for efficient separation of zwitterionic polymer and dye from chemical sludge. It is found that at high salt concentration, the separation factor greatly increases and the regenerated polymer fluids exhibit good reusability.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Juanming Wei, Wenfeng Jia, Luo Zuo, Hao Chen, Yujun Feng
Summary: In this study, a high viscosity water-soluble friction reducer (HVFR) was synthesized and investigated for its potential application in slick-water hydrofracking of shale oil and gas reservoirs. The results showed that HVFR exhibited significant drag reduction performance and could retain its viscosity under various conditions, indicating its prospective use in the oil and gas industry.
Review
Chemistry, Physical
Aranee Teepakakorn (Pleng), Makoto Ogawa
Summary: This article summarizes the studies on the interactions between water-soluble polymers and layered clay minerals, aiming to clarify the structure-property relationship in these hybrids. The reported applications of hybrids of layered clay minerals and water-soluble polymers include solid-electrolyte and gas barrier film for packaging, with additional examination on stability and self-healing characteristics necessary for practical applications.
APPLIED CLAY SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Kumika Ichihara, Tadashi Sugahara, Masaaki Akamatsu, Kenichi Sakai, Hideki Sakai
Summary: Increasing NaCl concentration reduced the spacing of alpha-gel, resulting in decreased viscosity; further increasing NaCl concentration increased domain interactions, leading to increased viscosity.
Article
Materials Science, Multidisciplinary
Siqi Rong, Lei Huang, Ruoyu Wang, Jialing Xu, Zhiyong Peng, Yunan Chen, Hui Jin, Liejin Guo
Summary: Supercritical water gasification (SCWG) technology is considered promising for treating oily wastewater, but the impact of mixed inorganic salts on the reactor during the SCWG process is not well studied. This study exposed Fe-based alloys and Ni-based alloys to an environment of inorganic chloride salt in supercritical water. The analysis revealed that in an environment of supercritical water containing inorganic chlorides, Fe-based alloys showed suppressed surface corrosion, while Ni-based alloys exhibited exacerbated surface corrosion.
Article
Chemistry, Physical
Di Yang, Bo Yang, Zongjun Jiang, Hao Zhang, Yin Zhong, Yang Shao
Summary: Research has found that adjusting the content of hydrophobic monomers can effectively improve the salt tolerance of polymers. Polymers with higher hydrophobic monomer content exhibit better salt tolerance. As the salt content increases, the radius of gyration of the polymers continuously decreases at low hydrophobic monomer contents, while it tends to increase and then decrease at high hydrophobic monomer contents. Increasing hydrophobic monomer content enhances the association effect of polymers, forming more hydrophobic regions and improving viscosity.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
Xinjie Luo, Pengfei Zheng, Ke Gao, Bing Wei, Yujun Feng
Summary: A copolymer was developed to control gas channeling and enhance oil recovery during enhanced WAG processes, by increasing aqueous solution viscosity through both heat and CO2. The copolymer can be thickened/gelled by heating and viscosified by bubbling CO2, with synergistic effects observed. These effects are completely reversible and in-situ thermo-induced gelation and CO2-triggered thickening effectively mitigated gas channeling in WAG flooding tests, leading to significantly higher oil recovery.
Article
Biochemistry & Molecular Biology
Philipp Schroeder, Stefan Cord-Landwehr, Monika Schoenhoff, Cornelia Cramer
Summary: This study investigates the composition and charge compensation of complex coacervates of chitosan and gum arabic, depending on pH and salt concentration. The individual polyelectrolyte yields were determined using thermogravimetric analysis and enzymatic hydrolysis/HPLC-ELSD for chitosan quantification. The mass ratio of polyelectrolytes in the complex coacervate remains constant regardless of pH, with either chitosan or gum arabic charges in excess depending on pH. The amount of extrinsic charge compensation in the complex coacervate is discussed, and the doping level is found to be suitable for describing pH-induced extrinsic charge compensation in such systems.
Article
Multidisciplinary Sciences
Rozeline Wijnhorst, Menno Demmenie, Etienne Jambon-Puillet, Freek Ariese, Daniel Bonn, Noushine Shahidzadeh
Summary: Deliquescence is a first-order phase transition that occurs when salt absorbs water vapor. This process significantly affects the stability of crystalline powders, which are crucial in various fields such as pharmacology, food science, and environmental/climate studies. Through microscopy techniques and Raman spectroscopy, we found that the salt sodium sulfate decahydrate, mirabilite, behaves differently from anhydrous salts during deliquescence. Mirabilite crystals not only lose their facets but also become soft and deformable, exhibiting properties of both crystalline and liquid states. These observations highlight the role of crystalline water and its mobility within the structure in the softness observed during deliquescence. The results have implications for applications such as thermal energy storage, where relative humidity plays a crucial role.
NATURE COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Xiaoqin Zhang, Bo Li, Feng Pan, Xin Su, Yujun Feng
Summary: This study compared the adaptability of a thermoviscosifying polymer (TVP) with HPAM for chemical EOR in low-permeability oil reservoirs. Results showed that TVP exhibited higher viscosity, thermal stability, and incremental oil recovery compared to HPAM, indicating its potential use in such reservoirs.
Article
Polymer Science
Thu Thao Pham, Tien Duc Pham, Shin-ichi Yusa
Summary: In this study, a diblock copolymer was synthesized via a reversible addition-fragmentation chain transfer radical polymerization. Water-soluble polyion complex (PIC) vesicles were formed by electrostatic interactions between the oppositely charged blocks. The vesicles exhibited pH- and thermo-responsive behavior, making them potential candidates for smart drug delivery systems.
Article
Chemistry, Organic
Huifang Lai, Jiexin Xu, Jin Lin, Biling Su, Daijun Zha
Summary: The Ritter-type reaction is an efficient tool for constructing amides, but the issue of chemical selectivity limits its efficiency and yield. We discovered that the inorganic salt hydrate MgSO4·2H2O can control chemical selectivity and overcome the shortcomings of other synthesis methods. It has a wide range of applications and significantly improves yield.
ORGANIC CHEMISTRY FRONTIERS
(2022)
Review
Food Science & Technology
Yi Xu, Md Mehedi Hassan, Arumugam Selva Sharma, Huanhuan Li, Quansheng Chen
Summary: This review summarized the recent advances in nano-optical strategies for bacteria and their metabolites sensing in the field of food safety. Nano-optical sensors, integrated with various technologies, have greatly improved the sensitivity and reduced the detection time and cost. However, challenges remain in the simple fabrication of biosensors and their practical application in complex matrices.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2023)
Review
Food Science & Technology
Zhiming Guo, Ping Chen, Nermeen Yosri, Quansheng Chen, Hesham R. Elseedi, Xiaobo Zou, Hongshun Yang
Summary: This review discusses recent advances in the detection of heavy metals in food and agricultural products using surface-enhanced Raman spectroscopy (SERS). The article covers the basic principles of SERS, advances in heavy metals detection, and the potential of combining chemometrics and multivariate analysis with SERS. The findings suggest that SERS is a powerful and promising technique for the detection of heavy metals.
FOOD REVIEWS INTERNATIONAL
(2023)
Review
Food Science & Technology
Md Mehedi Hassan, Yi Xu, Muhammad Zareef, Huanhuan Li, Yawen Rong, Quansheng Chen
Summary: The abuse of pesticides in agricultural land can cause residue increase and environmental pollution, ultimately affecting human health. Detecting trace amounts of residue in food and water is crucial. Recently, nanomaterial-based optical detection methods have gained interest due to their high sensitivity, low detection limit, and good selectivity. This review focuses on the application of these methods to monitor benzimidazole fungicide residue in food and water samples.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2023)
Review
Food Science & Technology
Hao Lin, Hao Jiang, Selorm Yao-Say Solomon Adade, Wencui Kang, Zhaoli Xue, Muhammad Zareef, Quansheng Chen
Summary: This article discusses the importance of food quality and nutrition and introduces VOCs analysis techniques for assessing food quality. These techniques are nondestructive, convenient, and environmentally friendly and can be applied to the transportation, storage, and processing of food.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2023)
Article
Chemistry, Applied
Peihuan He, Md Mehedi Hassan, Wenjing Yang, Zhaoxia Shi, Xinyu Zhou, Yi Xu, Qin Ouyang, Quansheng Chen
Summary: This study developed a label-free surface-enhanced Raman scattering (SERS) sensor using optimized rough silver nanoparticles (AgNPs@K30) for rapid detection of three main mycotoxins in rice. Two variable selection chemometric calibration methods were compared, and the genetic algorithm partial least square achieved high correlation coefficients for the detection of mycotoxins. The prepared SERS sensor showed great stability and reproducibility, indicating potential for predicting mycotoxins in real rice samples.
Article
Food Science & Technology
Hui Jiang, Jihong Deng, Quansheng Chen
Summary: This study presents a quantitative method utilizing olfactory sensor technique for determining fatty acids in stored wheat. An olfactory sensor array was prepared using chemical dyes, and a dung beetle optimizer algorithm was employed to select the best color variable combination for the sensor. The support vector regression model based on the selected color variables showed the best performance in detecting wheat fatty acid values.
Article
Biochemistry & Molecular Biology
Yuying Wang, Sisi Chen, Wanmei Chen, Jingjing Wang, Kun Li, Chengyi Hong, Kailong Zhang, Quansheng Chen
Summary: Beta-lactoglobulin is a protein found in milk that can cause severe allergic reactions. This study presents a novel fluorescent aptamer biosensor for detecting beta-lactoglobulin, which has a linear detection range of 1-100 ng mL (-1) and a limit of detection of 0.344 ng mL (-1). The method has been successfully used for detecting beta-lactoglobulin in milk samples.
Article
Chemistry, Analytical
Jinjin Wang, Mengke Xia, Jie Wei, Tianhui Jiao, Qingmin Chen, Quansheng Chen, Xiaomei Chen
Summary: This study presents a new dual-signal amplified cathodic electrochemiluminescence (ECL) biosensor for the ultrasensitive detection of zearalenone (ZEN) in maize, which is of significant importance in preventing mycotoxin contamination in cereals.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Review
Multidisciplinary Sciences
Devaraj Sabarinathan, Arumugam Selva Sharma, Marimuthu Murugavelu, Balakrishnan Kirubasankar, Indhiradevi Balusamy, Zhang Han, Huanhuan Li, Quansheng Chen
Summary: The development of nanoclusters based on incorporating biomolecules shows promising future as stable and high fluorescence biosensors with high sensitivity, detection level, and selectivity. The review provides an overview of recent advancements in synthesizing metal nanoclusters and their applications in food safety analysis.
Article
Chemistry, Applied
Songguang Zhao, Selorm Yao-Say Solomon Adade, Zhen Wang, Jizhong Wu, Tianhui Jiao, Huanhuan Li, Quansheng Chen
Summary: In this study, near-infrared (NIR) spectroscopy combined with partial least squares (PLS), backpropagation neural network (BPANN), and their combination (PLS-BPANN) were used to monitor the total sugar content of kombucha. A total of 16 mathematical models were constructed and evaluated. The results showed that the PLS-BPANN model outperformed others, with a determination coefficient (R2p) of 0.9437 and a root mean square error of prediction (RMSEP) of 0.8600 g/L, indicating good verification results. The findings suggest that NIR coupled with PLS-BPANN can be a nondestructive and online technique for monitoring total sugar changes.
Article
Chemistry, Applied
Qin Ouyang, Yanna Rong, Jiaqi Wu, Zhen Wang, Hao Lin, Quansheng Chen
Summary: This study applied Vis-NIR and CSA techniques to identify matcha grades, and the results showed that the sensor combined with the BPANN model can be satisfactorily applied in the identification of different matcha grades.
Article
Chemistry, Applied
Yumeng Li, Qingyang Si, Chuanyi Liu, Ziling Huang, Qingmin Chen, Tianhui Jiao, Xiaomei Chen, Quansheng Chen, Jie Wei
Summary: Improper use of kanamycin can result in trace residues in animal-derived foods, posing a potential threat to public health. In this study, a nonenzymatic self-driven hybridization chain reaction (SHCR) amplifier was developed for kanamycin determination, with 5800-fold higher sensitivity than conventional HCR circuit. The self-sustainable SHCR aptasensor demonstrated highly sensitive and reliable analysis of kanamycin in buffer, milk, and honey samples, offering great potential for amplified detection of trace contaminants in liquid food matrices.
Article
Chemistry, Applied
Huanhuan Li, Wenhui Geng, Zihan Zheng, Suleiman A. Haruna, Quansheng Chen
Summary: The misuse of chloramphenicol (CAP) has led to drug-resistant strains, posing a significant threat to public health. A flexible surface-enhanced Raman spectroscopy (SERS) sensor using gold nanotriangles (AuNTs) and polydimethylsiloxane (PDMS) film was proposed for rapid detection of CAP in food samples. The sensor showed promising results with high accuracy and compatibility with conventional methods, suggesting its potential for monitoring milk quality and safety.
Article
Agriculture, Multidisciplinary
Jinjin Wang, Silun Li, Jie Wei, Tianhui Jiao, Qingmin Chen, Munetaka Oyama, Quansheng Chen, Xiaomei Chen
Summary: To prevent contamination of cereals by mycotoxins, a sensitive and rapid method for mycotoxin detection is essential. In this study, a screening-capture-integrated electrochemiluminescence (ECL) aptasensor based on mesoporous silica films (MSFs) was developed for the ultrasensitive and highly selective detection of deoxynivalenol (DON) in wheat. The sensor combines size screening and specific capture to achieve quantitative detection of DON, providing a new approach for early detection of wheat mildew.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Agriculture, Multidisciplinary
Qin Ouyang, Mingming Zhang, Baoning Wang, Tahreem Riaz, Quansheng Chen
Summary: This study demonstrates the construction of a simple and cheap upconversion fluorescence nanosensor for the detection of fluoroquinolones residues. The sensor showed high efficiency in detection and storage stability. The effectiveness of the nanosensor was validated using enrofloxacin as a representative veterinary drug for fluoroquinolones.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
