Article
Materials Science, Multidisciplinary
Hai Wang, Xiaowen Qi, Lifen Liang, Yongfu Wang, Junyan Zhang, Xiangbo Meng
Summary: The tribological properties of self-lubricating polymer were improved by enhancing the properties of the transfer film through the use of graphene oxide (GO) reinforced polytetrafluoroethylene (PTFE)/poly-p-phenylene terephthamide (PPTA) composites (GPPs) prepared by dual-size synthesis. The tribological properties of GPPs were investigated using a ball-on-disk tribometer, revealing low friction coefficient (minimum = 0.061) and high hydrophobicity (maximum = 137.1385 degrees). The study elucidated the structure-property relationships and practical effect of transfer film enhancement induced by GO, aiming to provide guidance for the design of GO reinforced self-lubricating polymers.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Mechanical
Bo Yu, Kai Wang, Xianjuan Pang, Gensheng Wu, Jibin Pu, Haichao Zhao
Summary: By grafting octadecylamine onto graphene oxide through a simple amidation reaction, ODA-RGO was obtained as a lubricant additive, showing beneficial effects on lubrication and friction-reduction. The excellent tribological behavior was attributed to the formation of a protective film and the restacked shape of ODA-RGO.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Rukia Fatima, Muhammad Farooq Warsi, Muhammad Ilyas Sarwar, Imran Shakir, Philips O. Agboola, Mohamed F. Aly Aboud, Sonia Zulfiqar
Summary: A new AgO center dot CuO center dot WO3/rGO nanocomposite was designed and fabricated to study its degradation ability under visible light. The nanocomposite showed a high photocatalytic efficiency with a degradation rate of 95% for methylene blue in 40 minutes, indicating its strong potential for organic dye removal from water.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Waqas Ahmad, Qaizar Ahmad, Muhammad Yaseen, Imtiaz Ahmad, Fida Hussain, Badrul Mohamed Jan, Rabia Ikram, Minas M. Stylianakis, George Kenanakis
Summary: The study investigated the effect of different weight ratios of copper oxide nanoparticles and reduced graphene oxide as fillers on the mechanical, electrical, and thermal properties of waste polystyrene matrix. Results showed that the addition of both fillers led to a significant increase in the mechanical properties of the composite, with enhanced electrical conductance and thermal stability compared to pure waste polystyrene.
Article
Materials Science, Multidisciplinary
Hanjing Zhu, Meng Zhou, Ke Jing, Baohong Tian, Yi Zhang, Xu Li, Yunzhang Li, Xianhua Zheng, Heng Li, Zipeng Ma, Yong Liu, Alex A. Volinsky, Jin Zou
Summary: Two composites, 0.5Y2O3/Al2O3-Cu/30Mo3SiC and 0.3GO-0.5Y2O3/Al2O3-Cu/30Mo3SiC, were fabricated by fast hot press sintering. The effects of doped reduced graphene oxide (rGO) on the hot deformation behavior and microstructure of 0.5Y2O3/Al2O3-Cu/30Mo3SiC composites were investigated. The presence of molybdenum carbide (MoC) layers/nanoparticles at the rGO-Cu/Mo interface improved the interfacial bonding of the composite. Additionally, the addition of rGO resulted in enhanced flow stress and activation energy of hot deformation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Biochemistry & Molecular Biology
Zhijie Ren, Huanhuan Li, Jin Li, Jun Cai, Lian Zhong, Yingqi Ma, Yajie Pang
Summary: This study investigates the preparation of reduced graphene oxide/chitosan/gold nanoparticles (rGO/CHS/AuNPs) composites using chitosan with different molecular weights as reducing agent and stabilizer, and examines their composition, structure, and catalytic performance. The results indicate that rGO/CHS/AuNPs prepared using low molecular weight chitosan exhibit the best catalytic activity. This research is of significance for the development of efficient catalysts for the reduction of aromatic nitro compounds.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Materials Science, Ceramics
Wei Li, Hak Jin Sim, Hui Lu, Huatang Cao, Ying Chen, Ping Xiao
Summary: Reduced graphene oxide (rGO)-reinforced Al2O3 composites were fabricated by spark plasma sintering, and the effect of graphene oxide (GO) dimensions on the microstructure and mechanical properties of the composites was studied. Thin GO resulted in grain size refinement and grain boundary pinning effects, leading to higher hardness of the composites.
CERAMICS INTERNATIONAL
(2022)
Article
Automation & Control Systems
Guodong Xiao, Biao Zhao, Wenfeng Ding
Summary: The addition of graphene nanoparticles can enhance the flexural strength of metallic composites, but high concentrations can lead to an increase in micropores, severely affecting mechanical strength, and causing larger cracks around CBN abrasive grains. The mass fraction of graphene concentrations is optimized at 0.01 wt.% in terms of friction coefficient, wear morphology, and microstructure.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Polymer Science
Leice G. Amurin, Marcos D. Felisberto, Felipe L. Q. Ferreira, Pedro H. Soraes, Poliane N. Oliveira, Bruna F. Santos, Jose C. S. Valeriano, Daniel C. de Miranda, Glaura G. Silva
Summary: By dispersing reduced graphene oxide in an ultra high molecular weight polyethylene matrix, nanocomposites with high performance at low nanofiller contents were produced. The addition of graphene enhanced the wear resistance performance of the composite material, making it suitable for various high performance applications. This research result is of great significance for improving the performance of polymers.
Article
Engineering, Mechanical
Yuefeng Du, Zhenyu Zhang, Dong Wang, Lezhen Zhang, Junfeng Cui, Yapeng Chen, Mingliang Wu, Ruiyang Kang, Yunxiang Lu, Jinhong Yu, Nan Jiang
Summary: An improved method was used to fabricate highly aligned graphene-epoxy composites (AGEC) with horizontally oriented structure, which exhibited excellent tribological performance according to frictional tests results. This study highlights the potential of expanding the tribological applications of graphene-epoxy composites based on the excellent tribological properties of AGEC.
Article
Materials Science, Ceramics
Xinghua Su, Zhihua Jiao, Gai An, Mengying Fu, Qiang Tian, Xing Sun
Summary: This study found that the current density limit and furnace temperature are important control factors for flash sintering of Al2O3/rGO composites. Higher current density results in higher density, but excessive current density can lead to sample breakage. Under specific conditions, such as a furnace temperature of 800 degrees C, an electric field of 300 V cm(-1), and a current density limit of 33.33 A cm(-2), nearly completely dense Al2O3/rGO composites can be achieved.
CERAMICS INTERNATIONAL
(2021)
Review
Engineering, Mechanical
Ye Zar Ni Htwe, Aws. S. Al-Janabi, Yasmin Wadzer, Hussin Mamat
Summary: Nanolubricants have brought revolutionary and encouraging results in the field of lubrication. This review paper summarizes the effects of carbon, metal, metal oxide, and their composites and hybrid nanolubricants on tribology, as well as the popular measuring methodologies and the reasons behind these advancements. The study also includes the tribology results for different types of lubricants and emphasizes the prospects for further research in this area.
Article
Mechanics
Yaqian Liang, Long Jiang, Xiukuang Zhang, Zhenxiang Pei, Qian Lei
Summary: Cr3C2 and graphite reinforced Cu-Sn matrix composites were fabricated and their microstructure, mechanical properties, and tribological properties were investigated. The results showed that the addition of Cr3C2 improved the high-temperature stability and wear resistance of the composites.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Weiwei Xiao, Na Ni, Xiaohui Fan, Xiaofeng Zhao, Yingzheng Liu, Ping Xiao
Summary: This study reported an ambient flash sintering behavior of reduced graphene oxide/3 mol% yttria-stabilized ZrO2 composites, achieving dense and conductive composites at room temperature within a short time. The use of reduced graphene oxide as both a composite component and a conductive additive eliminates the need for vacuum and furnace, promising simplified fabrication equipment for energy and cost savings.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Wanxi Li, Boqiong Li, Yali Zhao, Xiaoqin Wei, Fang Guo
Summary: Component regulation and microstructure design are effective strategies to improve microwave absorption performance. A sandwich-like graphene-based absorbent with adjustable Fe3O4 content was synthesized through ultrasonic dispersion, blast drying, and roasting. The sandwich structure formed multiple interfaces, prevented nanoparticle aggregation, and facilitated interface polarization, resulting in enhanced impedance matching and microwave attenuation. The absorbent achieved an effective absorption bandwidth of 5.7 GHz and a minimum reflection loss value of -49.9 dB. Moreover, the synthesis process is simple and suitable for large-scale production and industrial applications. This facile route provides new ideas for designing graphene-based nanocomposites.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Huihua Min, Deqi Fan, Hao Zhang, Xueling Xu, Xiaofei Yang, Yi Lu
Summary: Harvesting solar energy to convert thermal energy is a promising technology with eco-friendly applications. This study presents a facile approach for constructing efficient photothermal conversion materials using a pillar hydrogel, enabling efficient solar-driven evaporation.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Qian-Qian Xiong, Tahir Muhmood, Cheng-Xiao Zhao, Jing-San Xu, Xiao-Fei Yang
Summary: Transition metal-containing MXene has great potential in various research fields and its performance relies on composition, structure, dimension, and surface chemistry. The rational design and controllable synthesis of ultrathin 2D MXene nanosheets with uniform surface terminations are of great importance.
Article
Chemistry, Multidisciplinary
Huimin Yu, Deyu Wang, Huanyu Jin, Pan Wu, Xuan Wu, Dewei Chu, Yi Lu, Xiaofei Yang, Haolan Xu
Summary: Lowering evaporation enthalpy is crucial for improving solar evaporation rate in solar-driven seawater desalination. This study presents a new approach to lower vaporization enthalpy by introducing heterogeneous interactions between hydrophilic hybrid materials and water molecules. The integration of 2D MoN1.2 nanosheets and rGO nanosheets forms stacked MoN1.2-rGO heterostructures, which significantly improve interfacial solar evaporation due to their massive junction interfaces. Molecular dynamics simulation reveals that the interactions between 2D MoN1.2 and rGO with water molecules lead to an imbalanced water state, breaking the hydrogen bonds and resulting in lowered vaporization enthalpy and improved evaporation rate (2.6 kg m(-2) h(-1)). This research provides a promising strategy for designing 2D-2D heterostructures to regulate evaporation enthalpy for cleaner water production.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yi Lu, Hao Zhang, Yida Wang, Xiaorong Zhu, Weiping Xiao, Haolan Xu, Gaoran Li, Yafei Li, Deqi Fan, Haibo Zeng, Zupeng Chen, Xiaofei Yang
Summary: The rational design of economic and high-performance electrocatalytic water-splitting systems is important for energy and environmental sustainability. A self-sustained water-splitting system based on the heterostructure of perovskite oxide and 2D Ti3C2Tx MXene was developed, showing high activity for solar-powered water evaporation and simultaneous electrocatalytic water splitting.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Environmental
Jun Deng, Chi Zhou, Yue Yang, Bing Nan, Lin Dong, Lingchao Cai, Lina Li, Zhu-Jun Wang, Xiaofei Yang, Zupeng Chen
Summary: A mesoporous carbon nitride-supported ruthenium single-atom photocatalyst was developed for the selective cleavage of lignin C-C bonds. The catalyst exhibited high activity and selectivity under visible-light irradiation and room temperature. This work explores the potential of single-atom catalysts for the photocatalytic production of aromatics from renewable biomass feedstocks.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Zhaolin Li, Tianchun Li, Jiaming Miao, Chengxiao Zhao, Yu Jing, Fengyan Han, Kan Zhang, Xiaofei Yang
Summary: An amide-functionalized highly crystalline covalent triazine framework (CTF-amide-X) was synthesized using a CF3SO3H-catalyzed trimerization strategy. Through a simple HCl treatment, CTF-1 was amide-functionalized while maintaining high crystallinity, which significantly enhanced photocatalytic activity.
SCIENCE CHINA-MATERIALS
(2023)
Article
Engineering, Environmental
Deqi Fan, Yi Lu, Xueling Xu, Yicheng Tang, Hao Zhang, Yan Mi, Xiaofei Yang
Summary: In this study, a novel approach of embedding photocatalytic materials and photothermal components into porous delignified wood is reported for water decontamination, hydrogen generation, and freshwater production. The well-designed all-in-one system effectively interfaces hydrogen-evolving semiconductor CdS with MoSe2, functioning as a co-catalyst and a photothermal agent, to drive the removal of pollutants, hydrogen production, and solar steam generation with high efficiency. The multifunctional system demonstrates a high hydrogen evolution rate and solar evaporation rate with an energy conversion efficiency up to 90.7% under one sun illumination. Encapsulation of photothermal-assisted photocatalytic systems with hydrogels effectively prevents the evaporation of toxic volatile organic compounds (VOCs) without compromising the solar steam generation performance. This study provides new insights into the rational design of novel multi-functional materials for environmental remediation and energy sustainability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Letter
Materials Science, Multidisciplinary
De-Qi Fan, Ye-Mei Liao, Xiang Wang, Yi Lu, Yan Mi, Xiao-Fei Yang
Review
Chemistry, Physical
Xiaoyan Chen, Taoyue Yuan, Xinyu Yang, Shunke Ding, Mengtao Ma, Tahir Muhmood, Xiaofei Yang
Summary: Per- and polyfluoroalkyl substances (PFASs) are emerging pollutants with high toxicity and bioaccumulation in aquatic environments. Advanced oxidation processes (AOPs) using photo/electrocatalytic heterogeneous systems can efficiently degrade PFASs in water. The structure of the photo/electrocatalysts plays a crucial role in reactive oxygen species production, electron transfer process, and degradation efficiency. This review focuses on the mechanisms and pathways of PFAS degradation in photo/electrocatalytic AOPs, as well as the structural designs and modifications of catalysts for enhanced PFAS degradation. Future research challenges and prospects in the field of PFAS remediation using photo/electrocatalytic heterogeneous AOPs are discussed.
Review
Energy & Fuels
Liuqing Yang, Wenxin Liu, Tianyu Hang, Linlin Wu, Xiaofei Yang
Summary: Artificial photocatalysis plays a crucial role in carbon neutrality, renewable resources generation, and sustainable society development. MXene, with its unique layered structure and tunable properties, has emerged as a promising contender for improving the performance of photocatalysts. This review discusses the multiple roles of MXenes in promoting photocatalysis, including active site anchoring, light-transmitting media, mass transfer medium, cocatalyst, and heat conductor. The current status, challenges, and future directions for MXene-based photocatalysts are also summarized and proposed.
Article
Chemistry, Physical
Daqiang Yan, Lin Zhang, Lei Shen, Runyu Hu, Weiping Xiao, Xiaofei Yang
Summary: Developing efficient Pd-based electrocatalysts for alkaline membrane fuel cells poses challenges due to strong oxygen adsorption and easy agglomeration. To address these issues, Pd/Co3O4-N-C multidimensional materials with porous structures were designed as ORR catalysts. The formation of Co-N and C-N bonds provided efficient active sites while the electronic interaction between Pd and N-doped Co3O4 prevented agglomeration and ensured exposure of active sites, leading to enhanced ORR kinetics. The Pd/Co3O4-N-C nanocompounds exhibited excellent ORR catalytic performance, ideal Pd mass activity, and durability, indicating their potential for fuel cell applications.
GREEN ENERGY & ENVIRONMENT
(2023)
Review
Chemistry, Physical
Weiping Deng, Yunchao Feng, Jie Fu, Haiwei Guo, Yong Guo, Buxing Han, Zhicheng Jiang, Lingzhao Kong, Changzhi Li, Haichao Liu, Phuc T. T. Nguyen, Puning Ren, Feng Wang, Shuai Wang, Yanqin Wang, Ye Wang, Sie Shing Wong, Kai Yan, Ning Yan, Xiaofei Yang, Yuanbao Zhang, Zhanrong Zhang, Xianhai Zeng, Hui Zhou
Summary: This review article focuses on the state-of-the-art catalytic transformation of lignocellulosic biomass into value-added chemicals and fuels, including the conversion of cellulose, hemicellulose, and lignin, as well as the gasification and pyrolysis of whole biomass. The opportunities, challenges, and prospects of woody biomass valorization are highlighted.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Hao Zhang, Yi Lu, Deqi Fan, Xueling Xu, Xiaodong Li, Xiaofei Yang
Summary: In this study, La1-xSrxCoO3 (LSC) perovskites were prepared using a hydrothermal and calcination method, and the oxygen evolution reaction (OER) activity was enhanced at x=0.1 composition. Two-dimensional (2D) Ti3C2 MXene dopant was introduced to improve electrocatalytic oxygen evolution and solar thermal evaporation. Strong interaction and charge-transfer between La1-xSrxCoO3 and Ti3C2 MXene accelerated the redox process. The obtained La0.9Sr0.1CoO3/Ti3C2 MXene (LSM) composite showed a low overpotential of 330 mV and excellent durability in 1 M KOH electrolyte. It also exhibited high solar-evaporation conversion efficiency of 96.8% under 1 sun irradiation. These findings demonstrate the great potential of perovskite-derived materials in solar desalination and electrocatalysis.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Jingyuan Zhao, Xuan Wu, Huimin Yu, Yida Wang, Pan Wu, Xiaofei Yang, Dewei Chu, Gary Owens, Haolan Xu
Summary: Direct conversion of low-grade heat into electricity has great potential for energy generation. This study presents a thermogalvanic cell that utilizes a cellulose fiber-based porous aerogel to harvest and convert thermal energy, while minimizing heat loss.
Article
Materials Science, Multidisciplinary
Jiapu Li, Ziyu Wang, Laiming Jiang, Zechuan Yu, Xu Ge, Jun Ou-Yang, Xiaofei Yang, Xiaobao Tian, He Tian, Benpeng Zhu
Summary: A photoacoustic sound generator based on vertical single-wall carbon nanotubes array with an internal nano-Helmholtz cavity is introduced. This device produces an audio signal through the forced vibration of the air inside the carbon nanotubes, and exhibits anomalous photoacoustic behavior with a resonance peak in the sound pressure level curve. The energy conversion efficiency is higher compared to a graphene sponge-based photoacoustic device. Additionally, this device can be used for music playing.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
