Article
Engineering, Chemical
Yun-Yun Song, Xu Zhang, Jia-Lei Yang, Zhong-Qiang Zhang, Guang-Gui Cheng, Yan Liu, Guo-Jun Lv, Zhao-Peng Yu
Summary: Industrial wastewater and produced water containing oil droplets must be processed properly to meet environmental standards before discharge, as it can pose a serious threat to marine life, the ecological environment, and human health. To address the challenge of oil-water separation, a superhydrophobic-superoleophilic surface with conical micro-arrays was developed to achieve ultrafast sorption of micro-oil droplets in water, providing a theoretical basis and technical support for fabricating underwater apparatuses for efficient oil droplet recovery from multiphase mixtures.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Tukhar Jyoti Konch, Trisha Dutta, Arindom Bikash Neog, Raktim Gogoi, Kalyan Raidongia
Summary: This study demonstrates the potential of using layered double hydroxides for ion pumping, achieving efficient anionic transport and energy harvesting. The results show that it can achieve high power density under conditions of salinity gradient.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Xiang Zhang, Azhen Du, Yongsheng Luo, Cunjing Lv, Yu Shrike Zhang, Shujie Yan, Yuanda Wu, Jingjiang Qiu, Yong He, Lixia Wang, Qian Li
Summary: Controlling the morphology and spreading behavior of liquids on solid surfaces can be achieved by designing hydrophilic micropillar arrays. The arrangement and shape of the micropillars play a crucial role in determining the shape of the liquid droplet and the spreading pattern. Surface energy barriers caused by micropillar edges were found to be key factors influencing the anisotropic spreading of the liquid.
SURFACES AND INTERFACES
(2022)
Article
Multidisciplinary Sciences
P. Cherukupally, W. Sun, D. R. Williams, G. A. Ozin, A. M. Bilton
Summary: A wax-wetting sponge was designed to efficiently recover oil droplets, especially in cases where low temperatures cause paraffin wax crystallization and high viscosity in crude oil. This sponge can effectively adsorb oil droplets from wastewater between 5 and 40 degrees Celsius, with the adsorbed oil being easily released upon rinsing with heptol.
Article
Chemistry, Physical
Yue Chen, Xuanhan Chen, Zhenhong Zhu, Mingyuan Sun, Shen Li, Minfeng Gan, Shi-Yang Tang, Weihua Li, Shiwu Zhang, Lining Sun, Xiangpeng Li
Summary: This study developed foam-core liquid metal (FCLM) droplets that can be manipulated in 3D in an electrolyte. The FCLM droplets are made by coating liquid metal on the surface of a copper-grafted foam sphere and actuated by electrically inducing Marangoni flow. Multiple droplets can form 3D structures, showing potential for wider applications.
Article
Chemistry, Physical
Xiang Wang, Tao Hu, Xiao Wang, Han Sheng, Jin Tan, Sunmiao Fang, Wei Deng, Xuemei Li, Jun Yin, Wanlin Guo
Summary: This research reports a new electrokinetic effect that generates electricity between a water droplet and an electrode by utilizing a charge gradient, and the direct correlation between the electrical output and the surface charge gradient allows the water droplet to sense and read stored information.
Article
Physics, Multidisciplinary
Katrina Smith-Mannschott, Qin Xu, Stefanie Heyden, Nicolas Bain, Jacco H. Snoeijer, Eric R. Dufresne, Robert W. Style
Summary: This study found that a stretched soft substrate can exhibit asymmetric wetting behavior, affecting the sliding and static shape of droplets. The stretch significantly influences droplet dynamics, and static droplets appear elongated, all due to droplet-induced deformations of the substrate.
PHYSICAL REVIEW LETTERS
(2021)
Article
Thermodynamics
Jiang Bian, Gaoya Ding, Dan Guo, Yang Liu, Xuewen Cao
Summary: Revealing the surface crystallization mechanism of short-chain alkanes is crucial for the development of the natural gas liquefaction industry. Molecular dynamics simulations were used to investigate the surface crystallization process of n-hexane nanodroplets and explain the underlying mechanism. The results showed that the crystallization process of supercooled heavy hydrocarbon droplets can be divided into two stages, with torsion energy and Lennard-Jones energy playing important roles.
Article
Engineering, Multidisciplinary
Lu Chen, Ming Gao, Jia Liang, Dongmin Wang, Liang Hao, Lixin Zhang
Summary: The study found that the best way to accelerate droplet merging and shedding on a gradient wetting circular surface is to apply a wetting gradient, which can accelerate this process. Additionally, the velocity of droplets merging and shedding increases with the wetting gradient, and the more hydrophilic the original surface, the better the optimization effect of accelerating drainage by applying a wetting gradient.
ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS
(2022)
Article
Thermodynamics
Pavel Strizhak, Roman Volkov, Omar Moussa, Dominique Tarlet, Jerome Bellettre
Summary: Through experimental research on water and tetradecane-based droplets, it is shown that there are significant differences in the parameters of child droplets produced from two-component droplets and emulsion droplets in micro-explosions, with heating temperature playing a decisive role. The conditions for generating high-temperature fine mist aerosols through micro-explosive breakup of droplets have been established experimentally.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Chemistry, Multidisciplinary
Shengyang Zhou, Yuhao Hu, Weiwen Xin, Lin Fu, Xiangbin Lin, Linsen Yang, Shuhua Hou, Xiang-Yu Kong, Lei Jiang, Liping Wen
Summary: This study demonstrates the introduction of extrinsic surface charge into nanofluidic channels and its potential applications in tunable ion transport behaviors and salinity-gradient energy harvesting.
ADVANCED MATERIALS
(2023)
Article
Physics, Applied
Huimin Hou, Xiaomin Wu, Zhifeng Hu, Sihang Gao, Zhiping Yuan
Summary: This study investigates the impact of the surface inclination angle on the dynamic behavior of condensate droplets and establishes a relationship between the transport distance, transport height, jumping direction of droplets, and the surface inclination angle. Additionally, a droplet motion equation is developed to describe the trajectory of droplets after they jump off the surface. The study also demonstrates the phenomenon of multi-hop jumping on the inclined superhydrophobic surface and provides a mathematical model to predict the multi-hop jumping transport distance, which has significant implications for the application of droplet jumping.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Jinming Zhang, Wei Ding, Uwe Hampel
Summary: This study deconstructs a complex surface defect into three primary surface defects and uses large-scale Molecular Dynamics simulations to investigate the mechanisms of droplet-solid static friction forces induced by these defects. Three element-wise static friction forces related to the primary surface defects are revealed, and it is found that the static friction force induced by chemical heterogeneity is contact line length dependent while the static friction force induced by atomic structure and topographical defect is contact area dependent. The latter causes energy dissipation and leads to a wiggle movement of the droplet during the static-kinetic friction transition.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Physics, Applied
Hiroshi Matsuura, Hiromitsu Furukawa, Atsushi Kondo, Tamio Tanikawa, Hideki Hashimoto
Summary: This study analyzed the mechanisms of jet atomization based on a frequency analysis of atomization sounds in the audible range and revealed the resonance between the hydrophilic diaphragm and the surface wave in symmetrical jet atomization. The study also showed that acoustic analysis of atomization sounds can be utilized for advanced atomization control, particularly in providing uniform dispersions of droplets containing various substances.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Thermodynamics
D. V. Antonov, R. M. Fedorenko, P. A. Strizhak
Summary: The paper presents the findings of experimental research on the formation of child droplets during puffing and micro-explosion of droplets of suspension fuels. Various factors have been investigated, including droplet size, heating temperature, component concentration, and particle size and concentration. Two modes of droplet fragmentation, micro-explosion and puffing, have been consistently observed. Recommendations for the development of atomization technologies for fuel droplets have been provided.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Physical
Wenjing Tan, Chunmei Gao, Shifeng Ji, Yunqing Xing, Yi Guo, Baogui Liang
Summary: Membrane separation technology is widely used in wastewater treatment due to its cost-effectiveness and productivity. However, organic membrane fouling caused by humic acid is a major barrier to its further development. This study successfully addressed this issue through the production of composite materials and self-cleaning membranes, providing beneficial strategies and solutions for membrane contamination problems.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Qichang Peng, Qingdong Ruan, Bin Wang, Jinyuan Liu, Chao Huang, Xingwang Zhu, Dan Li, Liangliang Liu, Yinchuan Wang, Xiaolin Zhang, Jia Yan, Paul K. Chu, Hui Xu
Summary: The escalating issue of water pollution has led to significant attention in the field of photocatalysis. In this study, OV-Sb2WO6-X photocatalyst with oxygen vacancies was synthesized, which exhibited enhanced charge separation efficiency and improved photocatalytic activity. The introduction of oxygen vacancies was successfully controlled and characterized, and the modified photocatalyst showed superior degradation efficiency for dye wastewater treatment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wangcheng Zhang, Cunchuan Zheng, Hu Xie, Weichao Du
Summary: By using a specific curing agent ETB, the problem of dispersion and stability for oily epoxy resin in cement slurry system has been successfully solved. The application of the emulsified curing agent ETB in oilfield cement slurry system shows good rheological performance, resistance to high temperature and high pressure water loss, and corrosion resistance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
O. I. Krivonos, A. Babenko, O. B. Belskaya
Summary: This study synthesized biochar based on sapropel and investigated the effects of chemical modification on its textural characteristics, acid-base properties, and adsorption properties. The results showed that the chemical modification increased the fraction of micropores, specific surface area, and changed the surface properties of biochar. The experiment also revealed that biochar pretreated with alkali exhibited the maximum adsorption capacity for copper ions. A conceptual model identifying the mechanisms of copper adsorption on sapropel-based biosorbent was proposed.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
H. Lachhab, N. Benzbiria, A. Titi, S. Echihi, M. E. Belghiti, Y. Karzazi, A. Zarrouk, R. Touzani, C. Jama, F. Bentiss
Summary: The corrosion inhibitory potency of two new pyrimidine-pyrazole derivatives, PPA and PPC, was evaluated for mild steel in 1 M HCl. The results showed enhanced inhibition activities with increased concentration, reaching maximal values of 91.15% and 92.39% for PPA and PPC, respectively. However, the mitigation potency decreased with increasing temperature. SEM and XPS analysis revealed that PPA and PPC adsorbed on the mild steel surface, forming a shielding layer that prevented the dissolution of the steel in the acidic solution.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Shanmugapriya Sivalingam, D. Jeya Sundara Sharmila, Goutham Golla, Lakshmanan Arunachalam, Tarunendu Singh, G. Karthikeyan, A. Shanthi, Kannan Malaichamy
Summary: This study aims to develop a nano-biofungicide comprising of volatile essential oil molecules to enhance its efficacy in the field of agriculture through easily scalable green synthesis technique. The nano biofungicide was prepared through one pot hot melt ultrasonication technique with easy water dispersibility and long term stability. The physico-chemical analysis revealed that, nano bio-fungicides were amorphous sphere-shaped nanoparticles with low melting point. The encapsulation efficiency of major components of essential oil was determined, and it was found that they followed Higuchi model of release kinetics. The essential oil loaded nanostructured lipid carrier showed significantly higher mycelial growth inhibition compared to pure essential oil, indicating enhanced bio-efficacy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yinlong Li, Yingqing Zhan, Yiwen Chen, Hongshan Jia, Ximin Chen, Fei Zhu, Xulin Yang
Summary: In this study, ZnO quantum dots decorated MXene nanosheets were used as a functional filler for waterborne epoxy coating. The improved dispersion and synergy of ZnO QDs and MXene nanosheets enhanced the anticorrosion performance of the coating.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Fucheng Guan, Jing Tao, Qiang Yao, Zheng Li, Yihang Zhang, Shi Feng, Jianbin Sun, Qiang Yang, Xuecui Song, Jing Guo, Yuanfa Liu
Summary: This paper presents a method for preparing adsorbent materials based on biomass that can efficiently adsorb methylene blue. The experimental results show that the material has a hierarchical structure, high adsorption capacity, and reusability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Pengfei Hu, Zuli Mo, Weiliang Wang, Chengzhe Li, Zhaojia Guo, Guanqing Lin, Zhimin Guo
Summary: This study developed a novel in-situ particle vision and measurement (PVM) system to investigate heterocoagulation between coarse and fine particles in mineral processing. The experimental results showed that the degree of heterocoagulation decreased with increasing pH and stirring speed. Furthermore, under certain hydrodynamic conditions, coal particles were more distributed at the rear of the glass bead.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Tanveer ul Haq Zia, Anwar ul Haq Ali Shah, Behisht Ara, Kashif Gul
Summary: A label-free immunosensor for detection of hepatitis C core antigen was fabricated using a ternary nanocomposite based on polypyrrole, silver doped zinc oxide, and exfoliated graphene. The immunosensor demonstrated low detection limit, high selectivity, and stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoyan Feng, Jiachen Li, Lijun Liang, Linli Zhu, Sa Liu, Li Ren
Summary: In this study, polystyrene divinylbenzene microspheres were surface-modified by poly(carboxybetaine methacrylate) to develop an efficient hemoperfusion adsorbent for the removal of protein-bound toxins. The modified microspheres showed increased adsorption capacity and better biocompatibility, making them promising for clinical hemoperfusion therapy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoye Bi, Dong Xue, Yunpeng Wang, Chencheng Lv, Zexiong Li, Tao Zhao
Summary: This research aimed to develop a durable and formaldehyde-free flame retardant treatment for cotton fabrics. The results demonstrated successful grafting of phosphorous acid (PA) onto cotton fabrics, leading to enhanced flame resistance while maintaining the desired fabric characteristics.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Ruolin Wang, Wenjuan Sun, Haisheng Han, Dongping Tao
Summary: This study finds that Al-starch colloidal depressants can effectively inhibit the flotation of ultrafine calcite and chlorite, and increase the grade of valuable minerals. The chemisorption of Al-starch on mineral surface changes the functional group peaks and generates new O-Al functional groups.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wondimu K. Wakejo, Ali Maged, Beteley T. Meshesha, Joon W. Kang, Abayneh G. Demesa, Sandip Chakrabarti, Thallada Bhaskar, Ashok Kumar Gupta, Amit Bhatnagar
Summary: Simultaneously removing different pharmaceutical pollutants from wastewater is an important environmental issue, and the use of a system that can remove multiple contaminants at once is necessary. Functionalized biochar (FBC) has been found to be effective in simultaneously removing acetaminophen and ciprofloxacin and other pharmaceutical pollutants.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yu Wang, Fengwen Yan, Jie Wu, Zhijun Huang, Liuting Song, Shunda Yuan
Summary: In this study, Cu single atoms are anchored on the external surface of g-C3N4 nanofibers to maximize atom utilization. This catalyst exhibits excellent Fenton-like catalytic activity and good stability due to the full utilization of Cu active sites.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)