Article
Chemistry, Physical
Yu Zhang, Chao Li, Xianfu Liu, Jing Xu, Xingkun Yang, Zhang Zhang
Summary: A green and cost-effective strategy was developed to prepare platinum/graphene aerogel nanocomposites, which showed outstanding catalytic performance in the reduction of nitroaromatic compounds. Pt/GA-2 catalyst synthesized with a mass ratio of 2:1 exhibited the lowest activation energy value and promising prospects for industrial applications in wastewater treatment.
GREEN ENERGY & ENVIRONMENT
(2021)
Article
Chemistry, Multidisciplinary
Xia Xu, Liming Yang, Yanjun Cui, Bing Hu
Summary: The successful development of efficient and stable catalysts for 4-nitrophenol (4-NP) reduction reactions is important for environmental and ecological benefits. Fe3O4@Pt exhibits excellent catalytic performance for 4-NP reduction due to the synergistic effect between Fe and Pt, but suffers from instability. In this study, a stable composite nanomaterial is synthesized by utilizing the small-scale organic compound 2-hydroxyethylamine as a surfactant. The influence of monochromatic light and temperature on the kinetics of 4-NP reduction reaction by 2-hydroxyethylamine stabilized Fe3O4@Pt is investigated. The results show that both temperature and monochromatic light radiation have an impact on the kinetic regulation, with increased temperature promoting catalytic rate and monochromatic light radiation inducing agglomeration and inhibiting catalytic rate. This study provides a new approach for developing and regulating catalysts for heterogeneous catalysis reactions.
Article
Polymer Science
An Nang Vu, Hoa Ngoc Thi Le, Thang Bach Phan, Hieu Van Le
Summary: This article introduces a novel effluent treatment solution using noble metal-based nanocatalysts and NaBH4 as a reducing agent. The researchers propose a simple method to synthesize magnetic cellulose nanocrystals modified with magnetite and silver nanoparticles as a catalyst without using any reducing agents or stabilizers. The nanocomposite shows excellent catalytic degradation performance for organic pollutants and can be reused multiple times.
Article
Materials Science, Multidisciplinary
Yunlei Ma, Yunjing Zhu, Haopeng Yue, Guojian Jiang, Dandan Wu
Summary: In this study, a Co3O4-CuO nanocomposite catalyst dispersed on mesoporous silica nanospheres (MSN) was successfully synthesized via a hydrothermal method. The catalyst showed high dispersibility and a large specific surface area, enabling efficient contact with catalytic substrates. The catalytic reduction of 4-nitrophenol to 4-aminophenol was studied, and the nanocomposite catalyst exhibited excellent performance with complete conversion in 200 seconds.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Chemistry, Multidisciplinary
Yujie Liu, Haijun Zhou, Jinling Wang, Ding Yu, Zhaolei Li, Rui Liu
Summary: Core-shell nanoparticles (Fe3O4@PDA) wrapped with Ag were prepared using a simple and green synthesis method. The obtained nanoparticles showed excellent catalytic activity and selectivity, indicating their potential applications in various fields.
Article
Engineering, Chemical
Wangzhe Xia, Fei Zhao, Pai Fang, Mingze An, Junjiang Zhu, Kai Cheng, Minggui Xia
Summary: Magnetic Fe3O4 nanoparticles recycled from rolling oil sludge (ROS) were used as catalysts for 4-nitrophenol (4-NP) reduction. Compared with commercial nano-Fe3O4, the recycled Fe3O4 exhibited excellent 4-NP reduction performance with easy magnetic separation, complete conversion within 270 s, and stable activity after multiple cycles. The unique structure of Fe3O4@C on the surface of recycled Fe3O4 and the accelerated electron transfer on the carbon shell contributed to its superior activity. This study provides a new approach for utilizing ROS waste and synthesizing efficient 4-NP reduction catalysts.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Soumia Abdelkrim, Adel Mokhtar, Amal Djelad, Mohammed Hachemaoui, Bouhadjar Boukoussa, Mohammed Sassi
Summary: In this study, a facile method was developed to prepare magnetic alginate nanocomposite beads, which were used as catalysts for dye degradation. The prepared nanocomposite beads showed higher efficiency in degrading cationic dyes in both simple and binary systems. The reduction mechanism of the dyes on the catalyst surface was also investigated.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Liu Cui, Ziwei Bai, Ziqi Li, Zhaoyun Liu, Huanhuan Ma, Xiaoxu Chen, Kui Lin, Jia Hao, Yuanlu Cui, Fei Tian
Summary: Photocatalytic process using core-shell nano-catalyst is a highly efficient, environmentally friendly, and cost-effective method for removing or minimizing pollutants in wastewater. In this study, a recyclable and robust Cu2O/Fe3O4@C/Cu core-shell nanocomposite with excellent photocatalytic activity, stability, and magnetic recyclability is developed. It can efficiently convert 4-Nitrophenol to 4-aminophenol under UV light irradiation, and can be reused multiple times with good stability and magnetic separation ability. The proposed nanocomposite shows great potential for the elimination of pollutants in wastewater.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Paper & Wood
Ashi Khalil, Nauman Ali, Abdullah M. Asiri, Tahseen Kamal, Sher Bahadar Khan, Jawad Ali
Summary: A novel catalyst Ag@NiO/Alg hydrogel beads were synthesized by incorporating nanomaterial into polymer solution, which showed high catalytic efficiency in reducing RhB and MO. Experimental data indicated that the reactions followed pseudo-first order kinetics with high apparent rate constants when using Ag@NiO/Alg catalyst.
Article
Engineering, Electrical & Electronic
Krishnasamy Lakshmi, Ragunathan Jayashri, Krishna Kadirvelu
Summary: Increased industrial activity has resulted in the release of large quantities of phenolic compounds and their derivatives into the environment, with 4-nitrophenol being particularly harmful to human organs. A newly developed fluorescent nanocomposite CQDs@CeO2 shows exceptional properties and has high efficiency in reducing 4-nitrophenol.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Najwa Ahmad Kuthi, Sheela Chandren, Norazah Basar, Mohamad Shazwan Shah Jamil
Summary: In the past decade, there has been an increase in research on the synthesis of metal nanoparticles using biological systems, with plant-mediated synthesis being a focus of attention. This study developed a room-temperature method for synthesizing gold nanoparticles (AuNPs) using Carallia brachiata, a mangrove species from Peninsular Malaysia. The physicochemical properties of the AuNPs were found to be significantly dependent on pH, with alkaline pH resulting in more efficient catalytic activity.
FRONTIERS IN CHEMISTRY
(2022)
Article
Polymer Science
George Joseph, Dephan Pinheiro, Mothi Krishna Mohan, Sunaja Devi Kalathiparambil Rajendra Pai
Summary: Polyaniline/bismuth oxide (PANI/Bi2O3) nanocomposite was synthesized and used for the efficient catalytic reduction of 4-nitrophenol (4-NP). The composite exhibited high catalytic efficiency and stability, making it suitable for the reduction of nitro organic pollutants in water.
Article
Multidisciplinary Sciences
Abdullah A. Manda
Summary: In this work, a pulsed laser ablation in liquid (PLAL) technique was successfully used to synthesize a highly stable and recyclable magnetic nanocomposite Bi2O2.75/alpha-Fe2O3. The structural, morphological, and optical properties of the synthesized nanocomposite were studied and its catalytic activity in the reduction reaction of 4-nitrophenol to 4-aminophenol was quantitatively measured. The results showed excellent conversion and reproducibility, making PLAL a convenient method for fabricating efficient nanocatalysts.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Physics, Multidisciplinary
Abbad Al Baroot, Shamsuddeen A. Haladu, Mansur B. Ibrahim, Sultan Akhtar, Alhulw H. Alshammari, Taha AbdelMohaymen Taha, Khaled A. Elsayed, Abdullah A. Manda
Summary: SiO2/MoO3 nanocomposites with weight ratios of 3:1, 2:2, and 1:3 were synthesized using a nanosecond pulsed laser ablation method. The characterization results showed that the morphology and structure of the nanocomposites varied with the change in the MoO3 ratio, and the sample with the highest MoO3 content exhibited a compact morphology and a higher number of nanoparticles. The band gap energy of the nanocomposites increased with increasing MoO3 load. The nanocomposites demonstrated good catalytic performance for the reduction of 4-nitrophenol, and the reduction time decreased as the amount of MoO3 in the nanocomposite increased.
Article
Engineering, Chemical
Qiang Li, Huo Zhou, Guangyong Li, Yuxuan Ye, Dongsheng Xia
Summary: This study reported the preparation of magnetic Cu/Fe nanocomposite catalyst and investigated its catalytic performance for the reduction of 4-nitrophenol. The results showed that the fabricated catalyst had good magnetism and porous structures, and the Cu:Fe = 1.5 nanocomposite had higher catalytic activity and stability.
DESALINATION AND WATER TREATMENT
(2022)
Article
Chemistry, Physical
Rajalaxmi Sahoo, C. Reshma, D. S. Shankar Rao, C. V. Yelamaggad, S. Krishna Prasad
Summary: This study investigates the influence of the flexible spacer parity of a guest photoactive liquid crystalline dimer on the photonic bandgap features of the cholesteric and twist grain boundary smectic C phases of the host molecule. The results show that the parity of the photoactive dimer affects the width of the photonic bandgap and the blue-shift of the cholesteric phase. Additionally, the parity of the dimer also affects the layer spacing and two-dimensional periodicity of the liquid crystalline phases.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Sara Rozas, Alberto Gutierrez, Mert Atilhan, Alfredo Bol, Santiago Aparicio
Summary: This study presents a multiscale theoretical investigation on the use of bifunctional hydrophobic Deep Eutectic Solvent for carbon capture using tetrapropylammonium chloride, acetic acid, and ethanolamine. The characterization includes nanoscale analysis of CO2 absorption mechanisms and changes in liquid phase properties during gas capture.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Tabouli Eric Da-yang, Alhadji Malloum, Jean Jules Fifen, Mama Nsangou, Jeanet Conradie
Summary: In this study, the potential energy of different glycine tautomers and their interaction with Cu2+ cations was investigated. The results showed that the solvation medium and the presence of Cu2+ cations influenced the stability of glycine tautomers.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Xiaoliang Gou, Nan Ye, Qingqing Han, Junjie Cui, Long Yi Jin
Summary: In this study, amphiphilic rod-coil molecules with rigid DSA parts and flexible oligoether chains were designed and their assembly capacities were investigated. The morphology of the molecular aggregates was influenced by the pH of the solution and UV light, and the aggregates showed adsorption capacity for nitroaromatic compounds.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Shuang Liu, Liyan Shan, Cong Qi, Wenhui Zhang, Guannan Li, Bei Wang, Wei Wei
Summary: Optimizing the design of styrene-butadiene-styrene copolymer (SBS) is crucial for producing cost-effective SBS modifiers and improving road quality. This study examined the influence of SBS content and molecular structure on viscosity and compatibility. The results showed that the viscosity contribution of SBS is determined by its molecular structure and phase morphology.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Artem A. Petrov, Ekaterina A. Titova, Aydar A. Akhmadiyarov, Ilnaz T. Rakipov, Boris N. Solomonov
Summary: This work focuses on the thermochemistry of solvation of azeotropes. The enthalpies of dissolution of azeotropes in different mediums were determined, and the impact of the structure of the azeotropes on their properties in solution was discussed. A correlation between enthalpies of solvation and molar refraction was used to determine the vaporization enthalpies of azeotropes for the first time. The results were found to be consistent with literature data, obtained using direct and calculated methods. These findings contribute to the analysis of the structure-property relationships of azeotropes.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
L. V. Kamaeva, E. N. Tsiok, N. M. Chtchelkatchev
Summary: Understanding the correlations between liquids and solids allows us to predict the thermodynamic parameter range favorable for the formation of intriguing solid phases by studying liquids. In this study, we experimentally and theoretically investigated an Al-Cu-Co system within different composition ranges, and identified high-temperature solid phases. Our findings demonstrated the correlation between the boundaries of different solid phases and undercooling and viscosity in the concentration area.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
R. Aneesh Kumar, S. Jamelah Al-Otaibi, Y. Sheena Mary, Y. Shyma Mary, Nivedita Acharjee, Renjith Thomas, Renjith Raveendran Pillai, T. L. Leena
Summary: In this study, the interactions between doped and pristine coronenes and adenine nucleobases were investigated using Density Functional Theory. The optimal configurations, adsorption energies, charge transfer, and electrical properties of each complex were calculated. It was found that doped coronene had stronger adsorption strength and charge transfer compared to pristine coronene. The stability of the complexes was attributed to non-covalent interactions in the interactive region. The change in electrical conductivity of coronenes after adsorption suggested their sensitivity towards DNA bases. The predicted energy gap and prolonged recovery time for adenine-coronene configurations indicated the potential application of pristine/doped coronene in DNA detection.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Gang Zhou, Yongwei Liu, Biao Sun, Zengxin Liu, Cuicui Xu, Rulin Liu, Qi Zhang, Yongmei Wang
Summary: The CFD-DEM method was used to simulate the dust deposition pattern in the bronchus of anchor digging drivers, revealing the highest dust concentration in the vortex region of the working face. The study also found a positive correlation between dust particle diameter and bronchial deposition rate, and a negative correlation with alveolar deposition rate.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Yan Zhang, Yafei Luo, Lingkai Tang, Mingyan E, Jianping Hu
Summary: This study investigates the effects of different transition metal decorations on B12N12 nanocages on the adsorption properties of nitrosourea drugs using computational methods. The results reveal the presence of weak non-covalent interactions between metals and nanocages, and the interaction between drugs and nanocages plays a significant role in drug adsorption. Compared to free drugs, the adsorption of drugs on nanocages can facilitate electron transfer, reduce energy gaps and chemical hardness, indicating activity at the target site.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
C. I. Alcolado, J. Poblete, L. Garcia-Rio, E. Jimenez, F. J. Poblete
Summary: In this study, the selective oxidation of aromatic aldehydes was investigated using Ru(VI) as a catalyst and hexacyanoferrate (III) as a cooxidant in an alkaline medium. The reaction mechanism involves complex reaction orders for the oxidant and the aromatic aldehyde, while the reaction order for Ru(VI) is one. The proposed mechanism includes two catalytic cycles and the formation and decomposition of complexes. Quantitative structure-activity relationship analysis showed that deactivating groups in the para-position enhance the process.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Inez A. Barbieri, Marcos L. S. Oliveira, Franciele S. Bruckmann, Theodoro R. Salles, Leonardo Zancanaro, Luis F. O. Silva, Guilherme L. Dotto, Eder C. Lima, Mu. Naushad, Cristiano R. Bohn Rhoden
Summary: This study evaluated the adsorption of zolpidem on magnetic graphene oxide and synthesized magnetic graphene oxide adsorbents for zolpidem removal. The best magnetic nanoadsorbent was found to have a removal percentage of 87.07% at specific pH and temperature conditions. The results suggest that the removal of zolpidem is related to the surface chemistry of the adsorbent rather than the surface area of graphene oxide. The adsorbent showed excellent adsorption efficiency and magnetic behavior, making it a promising material for removing zolpidem from aqueous solutions.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Hongyan Huang, Chunquan Li, Siyuan Huang, Yuling Shang
Summary: This study examines the sensitivity of the thermal conductivity of water-based alumina nanofluids to changes in concentration, sphericity, and temperature. The results show that volume fraction and temperature have a significant impact on the thermal conductivity, while sphericity also needs to be considered. A support vector machine regression model was created to analyze the sensitivity of the thermal conductivity to different parameters. The findings indicate that temperature, sphericity, and volume fraction are the most sensitive variables.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Correction
Chemistry, Physical
V. M. Pergamenshchik, T. Bryk, A. Trokhymchuk
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Valentyn Rudenko, Anatolii Tolochko, Svitlana Bugaychuk, Dmytro Zhulai, Gertruda Klimusheva, Galina Yaremchuk, Tatyana Mirnaya, Yuriy Garbovskiy
Summary: This paper reports on the synthesis, structural characterization, spectral and nonlinear-optical properties of glass nanocomposites made of glass forming ionic liquid crystals and nanoparticles. The study reveals that by exciting the nanocomposites within their absorption band, a control over effective optical nonlinearities can be achieved, allowing the modification of the magnitude and sign of the effective nonlinear absorption coefficient. The proposed strategy using metal-alkanoates based glass-forming ionic liquid crystals and nanoparticles shows great potential for the development of nanophotonics and plasmonics technologies.
JOURNAL OF MOLECULAR LIQUIDS
(2024)