Article
Construction & Building Technology
Mallikarjun M. Hulagabali, Gaurang R. Vesmawala, Yogesh D. Patil
Summary: This study investigates the influence of graphene-based nanomaterials, including graphene oxide (GO) and reduced graphene oxide (rGO), on cement composites. GO and rGO were synthesized using an improved Hummer's method, and various characterization techniques were employed to analyze their structure and properties. The addition of GO and rGO to cement composites improved their rheology, workability, microstructure, and mechanical strength. The incorporation of graphene oxide and reduced graphene oxide into cement paste has the potential to revolutionize the construction industry by enhancing material performance and sustainability.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Chemical
Jacob Strimaitis, Samuel Adjepong Danquah, Clifford F. Denize, Sangram K. Pradhan, Messaoud Bahoura
Summary: Researchers incorporated synthesized GO and rGO in AC electrodes and found that they moderately enhance the rate resistance and capacity. However, the overall ineffectiveness of GO and rGO is attributed to their isolation and infrequent distribution method.
Article
Environmental Sciences
Jiali Zhu, Jing Shang, Tong Zhu
Summary: The study found that the intrinsic structure of soot is more similar to reduced graphene oxide, and it can serve as a potential carbo-photocatalyst with similar defective sites and optoelectronic performance. This finding is crucial for understanding the role of soot in photochemical aging processes.
ENVIRONMENTAL POLLUTION
(2021)
Review
Physics, Multidisciplinary
Jeffrey J. Richards, Paolo Z. Ramos, Qingsong Liu
Summary: The recent advances in computational and experimental methods have revealed the microstructural link to the rheology of carbon black suspensions. This understanding shows the significant role of restructuring, build-up, and break-up of carbon black agglomerates in simple shear, rationalized by the Mason number. The Mason number not only predicts reversible thixotropy at higher shear intensities, but also explains the evolution of microstructure at lower shear intensities. Insights from carbon black suspensions are broadly applicable to various soft matter, including colloidal gels for different applications.
FRONTIERS IN PHYSICS
(2023)
Article
Energy & Fuels
D. Carrillo-Pena, R. Mateos, A. Moran, A. Escapa
Summary: Microbial electrosynthesis using a carbon felt electrode modified with reduced graphene-oxide (rgoCF) as a methanogenic biocathode showed improved methane production compared to a control carbon felt electrode (CF). The rgoCF electrode generated almost 30% higher current density and had lower charge transfer and ohmic resistances by 50%. The presence of bacteria and archaea was also increased in the rgoCF electrode. The study estimated that a high-quality biogas (>95% methane concentration) can be produced within a certain CO2 feeding rate range.
Article
Chemistry, Physical
Yul Hui Shim, Eun Ho Cho, So Youn Kim
Summary: This study investigates the relationship between the microstructure and rheological properties of graphene oxide (GO) suspensions, and provides guidelines for tuning the rheological properties of 2D colloids.
Article
Materials Science, Ceramics
Mehdi Chougan, Francesca Romana Lamastra, Daniela Caschera, Saulius Kaciulis, Eleonora Bolli, Claudia Mazzuca, Seyed Hamidreza Ghaffar, Mazen J. Al-Kheetan, Giampiero Montesperelli, Alessandra Bianco
Summary: There is a growing interest in using nanosized fillers, such as graphene oxide (GO), in cement-based construction materials to enhance mechanical properties. The interaction between GO and cement can significantly improve the macroproperties of cement. A GO water suspension was selected for its reproducibility and environmental safety. Various tests, including morphological characterization and mechanical property evaluation, were performed on samples with different dosages of GO. Results showed that an extra-low dosage of GO (0.01%) exhibited the most promising enhancement in mechanical strength.
CERAMICS INTERNATIONAL
(2023)
Article
Mechanics
Yuan Lin, Ying Wang, Zixin Weng, Dingyi Pan, Jiawang Chen
Summary: The presence of bubbles in non-colloidal suspensions significantly affects the shear thinning behavior, with large bubbles enhancing shear thinning and nano-bubbles suppressing it. Additionally, nano-bubbles influence the particle organization behavior, leading to a larger critical strain for the finish of the organization process. Therefore, a degassing process is essential to obtain reliable rheological properties of the two-phase suspension system.
Article
Mechanics
Pavan Kumar Singeetham, K. V. S. Chaithanya, Sumesh P. Thampi
Summary: This study focuses on the flow characteristics and deformation dynamics of compound particles in microfluidic devices, revealing that under conditions of low Reynolds number and low Capillary number, the velocity and pressure fields are analyzed for compound particles in linear flow, along with the deformed shape of the confining drop.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Chemistry, Multidisciplinary
Jong-Chul Yoon, Xinyue Dai, Kyeong-Nam Kang, Jongha Hwang, Myung-Jun Kwak, Feng Ding, Ji-Hyun Jang
Summary: The in situ deoxidation and graphitization mechanism using a Fischer-Tropsch reaction catalyst allowed for high-quality reduced graphene oxide sheets under low temperature conditions. The process suppressed carbon loss in graphene oxide sheets, resulting in near-perfect graphene with lower electrical resistance and acting as an efficient catalyst for hydrogen and oxygen evolution reactions.
Article
Mechanics
Enzo d'Ambrosio, Donald L. Koch, Sarah Hormozi
Summary: Experimental measurements were carried out to investigate the effect of particle shape on the rheology of a dense, viscous suspension. The results showed that both spherical particles and particles with flattened faces exhibited shear thinning behavior, with the latter showing a stronger effect. The resistance to particle rolling was found to be enhanced by the flattened faces, leading to a higher viscosity at low shear stress in the suspension of particles with flattened faces compared to the suspension of spherical particles.
JOURNAL OF FLUID MECHANICS
(2023)
Article
Materials Science, Multidisciplinary
Ya-Wei Hao, Pan Yang, Li-Jun Yang, Liu-Xin Yang, Li Guo
Summary: This report aims to demonstrate a highly effective method of obtaining graphene oxide (GO)/reduced graphene oxide (RGO) paper through Ultraviolet (UV) laser direct writing. By removing oxygen-containing groups and introducing layered micro-nano structures on one side of the GO film, the prepared GO/RGO papers exhibit anisotropic deformation triggered by ethanol vapor and have potential applications as stimuli-response actuators.
Article
Green & Sustainable Science & Technology
Z. Eroglu, B. Sundu, O. Metin
Summary: A novel ternary heterojunction photocatalyst was fabricated by decorating reduced graphene oxide/black phosphorus binary heterojunctions with carbon nitride quantum dots. Different ratios of binary and ternary heterojunctions were prepared to investigate their synergistic coupling and superior photo physical properties. The ternary heterojunctions exhibited enhanced photocatalytic performance compared to their pristine components.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Materials Science, Ceramics
Zhizheng Dai, Xianli Yu, Yue Wang, Lili Wang, Xin Wang
Summary: A CF10/rGO film was fabricated by incorporating 10 wt% carbon fiber into graphene oxide dispersion, which exhibited good mechanical properties, improved room-temperature ferromagnetism, and excellent electromagnetic wave absorption performance.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Juhua Luo, Ziyang Dai, Mengna Feng, Mingmin Gu, Yu Xie
Summary: This study provides an efficient strategy to fabricate nanocomposites with high stability and efficient charge separation. The nanocomposites exhibit excellent photocatalytic performance and magnetic separability under visible light.
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)