Article
Chemistry, Multidisciplinary
Qun Wei, Lei Xu, Zhimeng Tang, Zhangbiao Xu, Cheng Xie, Lirong Guo, Wei Li
Summary: This article proposes a facile preparation method with characteristics of energy-saving, efficient and environmentally friendly. Graphite Intercalation Compounds (GICs) were synthesized using flake graphite (FG), H2SO4, and K2S2O8 as oxidative intercalations. EG (Expanded Graphite) was prepared from obtained GICs by microwave irradiation. The prepared EG demonstrated a high graphitization degree, less structural damage, and good industrial application prospects. The evaluation is: 8 points.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Environmental Sciences
Kazushi Noro, Yuna Kakimoto, Qi Wang, Satoshi Akiyama, Tetsuya Takikawa, Ryo Omagari, Yoshinori Yabuki, Takashi Amagai
Summary: The photodegradation of plastic waste generates microplastics (MPs) in marine environments. Plastics can adsorb hydrophobic organic pollutants, such as polycyclic aromatic hydrocarbons (PAHs), and can be transported long distances. However, the impact of adsorbed pollutants on photodegradation is still unknown.
MARINE POLLUTION BULLETIN
(2023)
Article
Engineering, Mechanical
Changshuai Shi, Kailin Chen, Xiaohua Zhu, Daqi Fu, Yuekui Qi, Feilong Cheng, Jianan Li
Summary: This study investigates the mechanical properties and corrosion behavior of 20G and 316L materials in solid expandable tubular (SET) experiments. The results indicate that the corrosion resistance of 316L SET is the strongest among the materials tested.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Engineering, Marine
Xinhao Liu, Wei Cao, Linqing Xie, Chengjun Sun, Fenghua Jiang
Summary: The global outbreak of COVID-19 has led to a surge in the use of disposable masks, and improper disposal of these masks can cause environmental pollution. A study on the aging characteristics of disposable masks in the natural environment found that the masks undergo changes in mechanical behavior, surface morphology, and chemical composition when exposed to UV radiation. It was observed that the different layers of the masks degrade at different rates, indicating potential impacts on the environment as the number of disposable masks continues to increase.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Physical
Zhicheng Liu, Fei Pan, Baiwen Deng, Zhen Xiang, Wei Lu
Summary: In this work, 3D worm-like expanded graphite/2D MoS2 nanosheets hybrids were successfully synthesized through a hydrothermal process, demonstrating excellent electromagnetic wave absorption performance. The MoS2/EG hybrids showed efficient wave absorption capability and an ultra-low filling ratio in the study.
Article
Materials Science, Multidisciplinary
Zhuguang Nie, Yang Feng, Qing Zhu, Ying Xia, Liping Luo, Lan Ma, Jie Su, Xingman Hu, Rumin Wang, Shuhua Qi
Summary: We have successfully synthesized a hybrid microwave absorbing material with a twodimensional layered structure, consisting of expanded graphite (EG) and boron nitride (BN). The material exhibits high performance for microwave absorption and broad absorption bandwidth. It is suitable for electromagnetic protection and high-temperature microwave absorption applications.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Fangkun Li, Xinyi Wang, Weixin He, Xijun Xu, Zhengbo Liu, Jiadong Shen, Yunfei Hu, Zhonghua Chen, Jun Liu
Summary: This paper reports a simple, economical, and easily scalable high-energy ball-milling method for the synthesis of Li2GeO3/expanded graphite (LGO/EG) as a high-performance anode for lithium-ion batteries. The LGO/EG exhibits a unique architecture with expanded graphite (EG) uniformly coating Li2GeO3 (LGO) particles, which effectively inhibits the agglomeration of LGO particles and provides outstanding high-rate performance and long-term cycle stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Lipin Feng, Jian Wu, Wenjuan Sun, Weimeng Cai
Summary: The effects of pore structure and pore size of porous carrier material on the phase transformation behavior of composite phase change materials (CPCMs) were studied. It was found that the addition of expanded graphites (EGs) could reduce the supercooling degree and improve the thermal conductivity of CPCMs. The web-like pore structure of EG-50 exhibited better performance, while decreasing pore size led to a decrease in phase transition temperature.
Article
Engineering, Electrical & Electronic
Saravanan Gengan, R. M. Gnanamuthu, Sanjay Sankaranarayanan, Venumbaka Maneesh Reddy, Bhanu Chandra Marepally, Ravi Kumar Biroju
Summary: In order to improve the selectivity, linear response and stability of non-enzyme glucose detection, we fabricated a Pt nanoflower (PtNF) anchored on rGO modified GCE (PtNF-rGO/GCE) using an environmentally friendly electrochemical method. The PtNF-rGO/GCE electrode exhibited excellent glucose electrooxidation in alkaline solution, with a linear range, sensitivity, and detection limit of 3.5 mM, 335.5 mu A mM-1 cm-1, and 53 mu M (S/N = 3) respectively. The PtNF-rGO/GCE electrode not only showed selectivity but also inhibited interfering molecules such as uric acid, dopamine, and ascorbic acid. This enables broad sensitivity, low-potential operation, stability, and rapid glucose current detection, expanding the applications of non-enzymatic glucose detectors.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Engineering, Chemical
Alina Madalina Darabut, Yevheniia Lobko, Yurii Yakovlev, Miquel Gamon Rodriguez, Katerina Veltruska, Bretislav Smid, Peter Kus, Jaroslava Novakova, Milan Dopita, Maryna Vorokhta, Vladimir Kopecky, Marek Prochazka, Iva Matolinova, Vladimir Matolin
Summary: Thermally expanded graphite (TEG), a promising filler, was prepared through thermal treatment of expandable graphite, resulting in a material with high electrical conductivity. The effects of temperature treatment on the morphology and chemical structure of TEG were thoroughly characterized.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Ning Xiang, Zunning Zhou, Xiaoxia Ma, Huichao Zhang, Xiangyuan Xu, Yongpeng Chen, Zerong Guo
Summary: In this paper, a novel preparation method of Ni-Zn ferrite intercalated EG (NZF/EG) is provided and the radar wave attenuation mechanism and performance of NZF/EG with different NZF ratios are analyzed and discussed. The as-prepared NZF/EG composites have potential application value in attenuating radar centimeter waves.
Article
Materials Science, Multidisciplinary
Peng Peng, Zhihao Zhao, Xiaoning Feng, Shudong Zhou, Yuanli Xu, Xudong Zhang, Zhikun Ma, Changjiang Zhang, Jiatai Wang
Summary: The phase transformation and lamellar structure formation of Ti-47.5Al-3Nb-1.5/3.5Cr alloys were investigated, and it was found that the lamellar precipitation temperature and interlamellar spacing are influenced by the cooling rate. The lamellae primarily precipitate at the boundary of the alpha and gamma phases, and higher Cr composition results in the bulging of gamma lamellae and the formation of steps between alpha and gamma lamellae.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Yumeng Zhao, Shasha Lv, Jie Gao, Zhou Zhou, Guma Yeli, Zhengcao Li
Summary: This study investigated the ion irradiation behavior of ET-10 and HOPG nuclear graphite in high temperature and high dose irradiation environments. Microstructural changes and defect evolution of graphite specimens were observed under different irradiation conditions. The effects of temperature on ion irradiation were divided into recovery and saturation stages, and the recovery degree of HWHM(G) was discussed. Overall, this study provides insights into defect evolution and crystallite size changes under temperature-dependent ion irradiation.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Food Science & Technology
Yanyu Hu, Wenjing Xu, Zhongyang Ren, Linfan Shi, Yucang Zhang, Shen Yang, Wuyin Weng
Summary: This study investigated the impact of drying rate on the physicochemical properties of emulsion films made from soy protein isolate (SPI) and soy oil. The micromorphology of the emulsion remained unchanged during 60 minutes of drying at a rate of 0.05 g s-1 m- 2, but the droplet size increased. Phase separation occurred at this drying rate but disappeared with higher rates. The tensile strength remained constant with increasing drying rate, while the elongation at break initially increased and then decreased.
FOOD PACKAGING AND SHELF LIFE
(2023)
Article
Polymer Science
Baomin Fu, Longlong Yang, Wenwen Xiang, Xiaoxuan Zou, Wenli Dai
Summary: Maintaining the mechanical properties and processability of thermally conductive polymer composites with high filling of heat conductive filler is challenging. An optimized hybrid filler system of flake graphite, expanded graphite, and short carbon fiber was introduced into PA6 matrix. The addition of expanded graphite effectively improved the thermal conductivity, while the addition of flake graphite maintained favorable processability. Furthermore, the hybrid filling of flake graphite and expanded graphite synergistically enhanced the thermal conductivity of the composite.
JOURNAL OF POLYMER ENGINEERING
(2023)
Article
Geochemistry & Geophysics
Wanjia Zhang, Wei Sun, Yuehua Hu, Jian Cao, Zhiyong Gao
Editorial Material
Chemistry, Physical
Wanjia Zhang, Zhitao Feng, Yuhang Yang, Wei Sun, Stephen Pooley, Jian Cao, Zhiyong Gao
Summary: Mono-functional chelating collectors have limited selectivity in mineral flotation. A new bi-functional collector, CEA, was developed in this study, capable of forming coordination bonds with Ca2+ ions and hydrogen bonds with anions on calcium mineral surfaces. CEA demonstrated promising selectivity in selectively separating fluorite and calcite from scheelite due to differences in electrical properties and hydrogen bonding abilities with the minerals.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Chemical
Wanjia Zhang, Liming Tao, Luobing Xun, Zhongxu Qi, Stephen Pooley, Wei Sun, Jian Cao, Zhiyong Gao
Summary: Pullulan polysaccharide (PU) has been evaluated as a potential depressant in the flotation separation of molybdenite from talc, showing effective results under the reagent scheme of 40 mg/L PU, 160 mg/L butyl xanthate (BX), and 25 mu L/L MIBC. FTIR and XPS analyses demonstrate that BX can desorb the pre-adsorbed PU on the surface of the molybdenite by competitive adsorption, highlighting the potential for industrial application in the flotation separation of molybdenite from talc.
MINERALS ENGINEERING
(2022)
Article
Engineering, Chemical
Wanjia Zhang, Jian Cao, Sihui Wu, Wei Sun, Zhitao Feng, Zhiyong Gao
Summary: The study synthesized chelating collectors based on heterocyclic thioketone framework and investigated their selectivity and mechanism through flotation experiments and theoretical calculations. The results showed that non-ionic collectors displayed better selectivity and weaker collecting ability, while strong ionic collectors exhibited the opposite behavior. This research not only revealed the potential of thioketones as selective sulfide collectors, but also provided a selectivity model based on bonding and charge transfer characteristics for further development of more selective sulfide collectors.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Wanjia Zhang, Yunxia Wu, Ruihua Fan, Jian Cao, Stephen Pooley, Wei Sun, Zhiyong Gao
Summary: Flotation technology is one of the greatest technologies in the 21st century that enables the large-scale utilization of mineral resources. Successful flotation separation relies on surfactants with unique selectivity towards different minerals. This study introduced a methyl group to synthesize a novel collector, sodium p-toluenesulfinate (SPTS), which demonstrated better selectivity than commonly used collectors SBS and EX. The improved selectivity of SPTS was attributed to its desolvation effect and the difference in hydration layers between galena and pyrite.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Wanjia Zhang, Xu Jiang, John Ralston, Jian Cao, Xin Jin, Wei Sun, Zhiyong Gao
Summary: Eosin Y, a commonly used dye for cotton and silk, is highly toxic and difficult to degrade. Around 20% of it becomes organic dye wastewater during the printing and dyeing process, posing serious harm to the environment and human health. In this study, naturally oxidized pyrite was chosen as a promising photocatalyst to degrade Eosin Y, achieving over 90% degradation under specific conditions.
MINERALS ENGINEERING
(2023)
Article
Engineering, Chemical
Xu Jiang, Wanjia Zhang, Ruihua Fan, Zixuan Zhang, Siyu Chen, Stephen Pooley, Lin Yang, Zhiyong Gao
Summary: In this study, dibutyl phosphonate (HDBP) was investigated as a collector for chalcopyrite. Flotation tests confirmed the selective and effective collection of chalcopyrite by HDBP at low concentrations and at environment-friendly pH. XPS, electrochemical tests, and DFT simulations provided further evidence to support this finding.
MINERALS ENGINEERING
(2023)
Article
Engineering, Chemical
Wanjia Zhang, Jing Chen, Shihong Xu, Xin Jin, Wei Sun, Zhiyong Gao
Summary: In this study, a thiazole depressant 2,4-thiazolidinedione (CSD7) is developed based on the selective chelation of heteroatoms to Cu2+, Pb2+, and Fe2+, achieving an efficient separation of molybdenite from chalcopyrite, galena, and pyrite in a collector-free flotation system.
MINERALS ENGINEERING
(2023)
Article
Engineering, Chemical
Wanjia Zhang, Xin Jin, Zhitao Feng, Renji Zheng, Jian Cao, Jing Chen, Wei Sun, Shihong Xu, Zhiyong Gao
Summary: Molybdenite is often found with chalcopyrite and other sulfide minerals, which hinders the efficient use of molybdenum resources. This study introduces acetoacetamide (CSD2) as a novel depressant to selectively separate molybdenite from chalcopyrite, galena, and pyrite. CSD2 allows for a collectorless flotation system, reducing costs and simplifying the process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Wanjia Zhang, John Ralston, Wei Sun, Zhitao Feng, Jian Cao, Shihong Xu, Xin Jin, Jing Chen, Renji Zheng, Zhiyong Gao
Summary: This article emphasizes the importance of evaluating the performance of collectors in flotation and proposes a flotation index (FI) based on mineral recovery as an evaluation method. The FI quantifies the actual collecting ability and selectivity, filling the gaps of existing evaluation indices. It can be used to evaluate collector flotation performance for mineral mixtures and industrial ores.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Proceedings Paper
Materials Science, Multidisciplinary
Wanjia Zhang, Zhiyong Gao, Runqing Liu, Haisheng Han, Pan Chen, Yue Yang, Lei Sun, Chenyang, Zhang, Yuehua Hu, Jian Cao, Wei Sun
9TH INTERNATIONAL SYMPOSIUM ON LEAD AND ZINC PROCESSING, PBZN 2020
(2020)
Article
Engineering, Chemical
Wanjia Zhang, Zhitao Feng, Happy Mulenga, Wei Sun, Jian Cao, Zhiyong Gao
CHEMICAL ENGINEERING SCIENCE
(2020)
