Article
Chemistry, Physical
Yushen Lu, Hong Zhang, Qin Wang, Aiqin Wang
Summary: The study involves the use of hydrochloric acid pretreatment and microwave-assisted oxalic acid leaching to transform red palygorskite-rich clay into white clay with improved dispersion and surface active sites. The resulting white clay, with a high specific surface area, can act as an effective nanofiller to enhance the toughness and reinforcing properties of polymers.
APPLIED CLAY SCIENCE
(2022)
Article
Metallurgy & Metallurgical Engineering
Yu-juan Zhang, Jun-min Sun, Guo-zhi Lu, Ting-an Zhang, Yan-bing Gong
Summary: The leaching kinetics of alumina extraction from coal gangue with hydrochloric acid was investigated. The effects of calcination activation temperature and leaching conditions on the alumina extraction efficiency were studied. The results showed that under the optimal conditions of a calcination temperature of 700°C, dissolution at 150°C for 2 hours in hydrochloric acid with a concentration of 20%, and a liquid-to-solid ratio of 3:1, the alumina extraction efficiency can reach 91.56%. Notably, lithium was also leached simultaneously with alumina, with a leaching rate of 80.00%. The leaching of alumina followed the shrinking unreacted core model and was controlled by a chemical reaction, with an activation energy of 45.64 kJ/mol.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Engineering, Chemical
Bin Ji, Qi Li, Rick Honaker, Wencai Zhang
Summary: The leaching recovery of rare earth elements (REEs) from kaolinite samples was significantly increased by pretreatment through calcination, likely due to the liberation of encapsulated REE-bearing minerals and conversion to more soluble forms. This study also found that the REEs were primarily associated with REE-bearing minerals within kaolinite aggregates, with only a small fraction occurring in an ion-adsorption form. The research suggests that the modes of occurrence and association characteristics of REEs with kaolinite are complex.
MINERALS ENGINEERING
(2022)
Article
Engineering, Chemical
Mohammad Rezaee, Shihua Han, Daulet Sagzhanov, Behzad Vaziri Hassas, Tania M. Slawecki, Dinesh Agrawal, Hamid Akbari, Robert Mensah-Biney
Summary: This study investigated the effect of microwave power on phase transformation and leachability of spodumene. The results showed that microwave power has a significant impact on both phase transformation and leachability of spodumene. Microwave heating not only provides a faster and more energy-efficient calcination process, but also results in lower recovery values of certain elements during the leaching process, offering an advantage in downstream purification processes.
Article
Green & Sustainable Science & Technology
Bin Ji, Qi Li, Qingqing Huang, Wencai Zhang
Summary: Phosphatic clay, a waste material from phosphate ore beneficiation, was used in this study for rare earth element (REE) recovery. By using HCl extraction and calcination pretreatment methods, the recovery rates were improved. However, increasing the calcination temperature led to reduced recovery rates, likely due to mineral changes.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Metallurgy & Metallurgical Engineering
Zijie Ren, Zhi Liu, Yuhang Liu, Huimin Gao, Feida Wu, Yuhan Song
Summary: This study investigated the role and mechanism of calcination-water quenching in quartz purification process and explored the removal effect of calcination-water quenching at different positions. By adjusting the position of calcination-water quenching, the experimental results showed that the purification effects of grinding-calcination-water quenching-classification-acid leaching process and grinding-classification-acid leaching-calcination-water quenching process were relatively good.
MINING METALLURGY & EXPLORATION
(2023)
Article
Engineering, Chemical
Weidong Xing, Jie Wang, Liu Zhu, Xueyi Guo
Summary: An integrated hydrometallurgical method was proposed for recovering valued metals from spent TaCrTi sputtering targets, involving leaching, solvent extraction, and precipitation. The method successfully removed impurities and recovered Ta and Ti from the targets.
MINERALS ENGINEERING
(2021)
Article
Environmental Sciences
Chengming Li, Bing Song, Zhiliang Chen, Zequan Liu, Lei Yu, ZeJian Zhi, Yan Zhao, Hong Wei, Min Song
Summary: This study proposes using contaminated soils to prepare ceramsite as an effective method to address the threat of heavy metal-contaminated soils. The optimal mixing ratio of clay/sandy soil was determined to be 0.6:0.4, and the sintering temperature was found to be 1200 degrees C. High sintering temperature facilitated the reactions between heavy metals and aluminosilicates, leading to the immobilization of heavy metals in ceramsite.
Article
Chemistry, Inorganic & Nuclear
Ruixiang Guo, Gang Wang, Wei Liu, Zibei Yao, Weisheng Liu
Summary: The novel strategy of adsorption-desorption-adsorption allows the catalyst to release active material for homogeneous catalysis during heating and reabsorb for heterogeneous catalysis after cooling. This process not only achieves recyclability of the catalyst but also improves catalytic activity, potentially applicable to other immobilized catalysts.
DALTON TRANSACTIONS
(2021)
Article
Engineering, Chemical
Dan Zou, Hailian Li, Yuefeng Deng, Ji Chen, Yan Bai
Summary: A new approach for recovering lanthanum and cerium from rare earth polishing powder wastes was developed in this study. The process involves baking, leaching, precipitation, and calcination steps to obtain the final product, achieving high yields.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Bingxian Peng, Xinrui Li, Sulin Xiang, Linyan Lei, Mengqi Yang, Lei Zhu, Yang Qi
Summary: The experiments evaluated the release behavior of iodine in phosphate rock under different pHs and temperatures, showing that iodine exists in various forms and is mainly released in the forms of ion exchange and carbonate binding after leaching and calcination.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Chemical
Xiuwu Liu, Yang Zhong, Shijie Zhu, Songling Zhang, Jilin Cao
Summary: This study investigated the effects of different calcination temperatures and several acids (HCl, H2SO4, H2C2O4) on the fluorine removal performance of bauxite. It was found that the calcination temperature of 500 degrees C and the modification of H2SO4 had the best fluorine removal performance. The modified bauxite had a much higher fluoride removal rate compared to unmodified bauxite. The study also analyzed the influence of adsorbent amount, initial fluorine concentration, adsorption time, and temperature on the fluorine removal performance.
ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Geochemistry & Geophysics
Lei Zhang, Hangchao Chen, Jinhe Pan, Zhiping Wen, Shulan Shi, Xin Long, Changchun Zhou
Summary: This study examined the feasibility of enriching critical metallic elements (Li, Ga, and REY) from coal gangue through physical separation and calcination treatment. The results showed that calcination significantly enriched Li, Ga, and REY in coal gangue and improved their acid leaching recoveries.
Article
Engineering, Chemical
Dongxing Wang, Wei Li, Shuai Rao, Jinzhang Tao, Lijuan Duan, Kuifang Zhang, Hongyang Cao, Zhiqiang Liu
Summary: By calcining the spent electrode material in a nitrogen atmosphere, the proposed energy-saving pre-treatment process allows for easy leaching of metals from spent LIBs in H2SO4 solution without the need for reductants. This method destroys the layered crystal structure of the cathode material, enhancing metals leaching rates through refinement of crystalline size, increased defects, and amorphization. This study offers a cost-effective approach to improve metals leaching efficiency from spent LIBs.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Guangyan Hu, Honghu Tang, Dongdong He, Wei Sun, Li Wang
Summary: In this study, a dry digestion method was introduced for the selective recovery of sodium from red mud, with suppressed formation of silica gel. Under optimized conditions, approximately 85% of sodium was leached out, with silicon dissolution suppressed to 0.7%.
MINERALS ENGINEERING
(2021)
Article
Energy & Fuels
Huihui Zhu, Hongyu Chu, Yaming Zhu, Haitao Bai, Yunliang Xu, Chaoshuai Hu, Junxia Cheng, Xuefei Zhao
Summary: Ethylene residue pitch (ETP) is a by-product of crude oil pyrolysis. Thermal modification of ETP can enhance the quality of derived needle coke. Moderate thermal modification significantly improves the properties of the derived needle coke.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Article
Energy & Fuels
Chaoshuai Hu, Hongyu Chu, Yaming Zhu, Yunliang Xu, Junxia Cheng, Lijuan Gao, Shiquan Lai, Xuefei Zhao
Summary: The study found that mesophase cokes derived from extract-based coal tar pitch have larger and more orderly graphite structure, while residue-based cokes have higher micro-strength intensity. The Tmax values of the two cokes are opposite, and all data of the two cokes exhibit bipolar distribution.
Article
Chemistry, Multidisciplinary
Zijian Yang, Qingjie Fan, Shiquan Lai, Li Yue, Junxia Cheng, Yaming Zhu, Xuefei Zhao
Summary: In this study, N/O-codoped high-capacity porous carbons were prepared by catalytically synthesizing a quinoline pitch (QLP) and then activating it with KOH at high temperature. These porous carbons exhibited excellent electrochemical performances with hierarchical and interconnected pore structures and high N/O-doping contents. They maintained high specific capacitances even under high current densities and showed good cycling stability.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Medicine, General & Internal
Shuo Yang, Ming-Gang Wang, Yu-Sheng Nie, Xue-Fei Zhao, Jing Liu
Summary: The study found that a hybrid application of open and laparoscopic approaches was more effective and safer for repairing a giant ventral hernia than a single open or laparoscopic procedure, with fewer postoperative complications.
WORLD JOURNAL OF CLINICAL CASES
(2022)
Article
Chemistry, Applied
Ya Gao, Wei Qin, Ming-Qing Tian, Xuefei Zhao, Xu-Hong Hu
Summary: This study demonstrates a method for the defluorinative alkylation reactions of trifluoromethyl alkenes (TAs) with soft carbon nucleophiles, providing access to diversified fluorine-containing compounds without the need for organometallic reagents or transition metals.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Materials Science, Ceramics
Hong Jia, Xian Zhang, Zhenyi Feng, Xuefei Zhao, Yibing Zhu, Yidan Fan, Jinping Pan, Chaoliang Ding, Zhiling Zhang, Xiaoyun Xu, Yan Cao
Summary: Core-shell nanocomposites with tunable structure and excellent optical properties have attracted extensive attention in the photoelectric field. In this study, a novel optically active nanocomposite with a core-shell structure is designed and applied as a spectral down-converter in a broadband solar-blind UV photodetector. The findings demonstrate a notable enhancement in UV sensitivity.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Oncology
Xuefei Zhao, Xia Xia, Xinyue Wang, Mingze Bai, Dongdong Zhan, Kunxian Shu
Summary: This study established proteomic subtypes of gastric cancer and identified significant survival rate differences between two subtypes (S-I and S-II). It showed that S-I subtype is sensitive to chemotherapy and patients benefit from adjuvant chemotherapy. These findings were validated in an independent set, demonstrating the utility and potential of the deep learning-based workflow in prognosis prediction and therapeutic decision-making.
FRONTIERS IN ONCOLOGY
(2022)
Article
Physiology
Yu Zhang, Xuefei Zhao, Xin Man, Yue Ma, Wei Zhang, Yu Wang, Xing Lei, Suying Bai
Summary: The research found that muscone in muskrat musk can regulate the development of muskrat prostate by inhibiting apoptosis.
AMERICAN JOURNAL OF PHYSIOLOGY-REGULATORY INTEGRATIVE AND COMPARATIVE PHYSIOLOGY
(2022)
Article
Engineering, Chemical
Chunyang Zhang, Yilin Fang, Yaming Zhu, Hongyu Chu, Chaoshuai Hu, Yunliang Xu, Xuefei Zhao, Yonghui Bai
Summary: Coal pitch is an important raw material for producing artificial carbon/graphite materials. Its pyrolytic behavior plays a crucial role in determining the quality of the derived materials. The molecular structure and aromaticity of coal pitch significantly affect the carbon crystalline content, micro-strength, and resistance of the pyrolytic products.
ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Biomedical
Qingsong Ai, Mengyuan Zhao, Kun Chen, Xuefei Zhao, Li Ma, Quan Liu
Summary: This paper presents an optimized neural network architecture for brain-computer interface technology. By removing artifact components, augmenting data, and using ensemble learning and transfer learning methods, the control of a robotic arm with multiple degrees of freedom is achieved. Experimental results demonstrate improved classification accuracy and model generality.
JOURNAL OF NEURAL ENGINEERING
(2022)
Article
Chemistry, Physical
Lidong Yan, Yilin Fang, Jianfeng Deng, Yaming Zhu, Yuzhu Zhang, Junxia Cheng, Xuefei Zhao
Summary: This study investigates the synthesis of MCMBs using high-temperature coal tar pitch and coal pyrolytic extracts. The addition of coal pyrolytic extracts can alter the molecular structure of the blending pitch, promoting the generation of MCMBs. The MCMBs obtained through co-polycondensation exhibit good sphericity, lower surface morphology defects, and lower charge transfer resistance.
Review
Chemistry, Physical
Jingying Shi, Xuefei Zhao, Can Li
Summary: Surface passivation engineering is a crucial approach to enhance the performance of photoelectrodes in photoelectrochemical (PEC) water splitting. This review summarizes various passivation materials and their preparation methods, characterizations by PEC measurements and related spectral technologies. The distinct features of the passivation effect, separate from other modifications such as cocatalyst decoration, are highlighted. Significant progress in combining surface passivation engineering with other interfacial modification strategies for the rational design of photoelectrodes is demonstrated. Ideas for future research on surface passivation modification to improve the performance of photoelectrodes are also proposed.
Review
Endocrinology & Metabolism
Cunqing Yang, Xuefei Zhao, Xuedong An, Yuehong Zhang, Wenjie Sun, Yuqing Zhang, Yingying Duan, Xiaomin Kang, Yuting Sun, Linlin Jiang, Fengmei Lian
Summary: Diabetic peripheral neuropathy is a chronic metabolic disease that seriously affects patients' quality of life and can lead to amputation and neuropathic pain. Current treatment options only address symptoms and do not reverse nerve damage. Understanding the underlying mechanisms is crucial for prevention and the development of new therapies.
FRONTIERS IN ENDOCRINOLOGY
(2023)
Review
Endocrinology & Metabolism
Xuefei Zhao, Xuedong An, Cunqing Yang, Wenjie Sun, Hangyu Ji, Fengmei Lian
Summary: Insulin resistance (IR) is crucial in metabolism-related diseases and provides a basis for understanding chronic diseases. This study reviewed the causes, mechanisms, and treatments of IR. Various factors including genetics, obesity, and disease lead to abnormalities in the insulin signaling pathway and development of IR. Therapeutic strategies include exercise, dietary changes, chemotherapy, and traditional Chinese medicine treatments. Further research is needed to define biomarkers and explore targeted drug treatments for IR to improve patients' quality of life.
FRONTIERS IN ENDOCRINOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Shushuang Sun, Yaming Zhu, Zishuo Gu, Hongyu Chu, Chaoshuai Hu, Lijuan Gao, Xuefei Zhao
Summary: In this study, bamboo fiber activated carbon (BAC) with high specific surface area and pore volume was prepared through the optimized process using response surface method. Characterization methods were used to analyze the micro-structure of BAC, which showed that BAC maintained the original pores of the bamboo fiber. The adsorption capacity of BAC for crystal violet in simulated wastewater reached a removal rate of 99.96%, and the adsorption process conformed to the pseudo-second-order kinetic model and Langmuir adsorption isotherm model. BAC has great application prospects in dye wastewater treatment.
Article
Chemistry, Physical
Nadine J. Kanik, Artur Kuligiewicz, Jeffrey T. Cullen
Summary: This study examined the effects of different pre-treatments on the structural H-isotope composition of clay minerals. The results showed that different pre-treatments had varied impacts on different clay minerals, and the choice of pre-treatment should be based on the specific properties and mineralogy of the samples.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Lorenzo Lisuzzo, Giuseppe Cavallaro, Stefana Milioto, Giuseppe Lazzara
Summary: This study proposes Pickering emulsions based on wax and halloysite clay nanotubes for coating silk sutures to increase their loading capacity towards eosin. The presence of halloysite/wax microspheres on the surface of silk sutures has also been explored for controlled release of hydrophobic drugs. The influence of the coating on the thermal and mechanical properties of the sutures has been studied using various techniques. In conclusion, the wax/halloysite Pickering emulsions can successfully generate hydrophobic microdomains on the surface of silk sutures, leading to enhanced flexibility and improved loading capacity towards eosin.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Bruna F. Alves, Rita C. P. Nunes, Luiz C. Bertolino, Elizabete F. Lucas
Summary: Operational problems in the oil industry caused by the precipitation of paraffins can be prevented by using polymeric additives. This article evaluates the use of polymeric nanocomposites as pour point reducers in different types of crude oil and finds that they are more efficient than pure poly(ethylene-covinyl acetate) (EVA) in reducing the pour point. The nanocomposites also modify the wax crystals and reduce the viscosity of the oil samples.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
K. A. Daniels, C. C. Graham, A. C. Wiseall, J. F. Harrington, P. Sellin
Summary: Geological storage with clay buffer is widely preferred for removing hazardous radioactive waste. The impact of fluid salinity and void space on the swelling behavior of barrier bentonites was examined through experiments. The findings suggest that clay swelling is suppressed at higher salinities, which affects the void-filling process.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
N. Werling, A. Kuligiewicz, A. Steudel, R. Schuhmann, F. Dehn, K. Emmerich
Summary: Thermal treatment of clay minerals can be used to produce building materials and environmentally friendly binders. This process involves dehydration, dehydroxylation, breakdown of structure, and recrystallization of high temperature phases. Rehydration and rehydroxylation are important factors to consider for geopolymers and SCM.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Xuan Wang, Hao Ding, Zhuoqun Xu, Jianmeng Zhang, Yanbin Yao
Summary: Rutile nano-TiO2 was loaded onto the surface of sericite to prepare sericite-rutile composite particles, which were then modified with HDTMS and sprayed onto the substrates to form sericite-rutile/HDTMS composite coatings with UV shielding and superhydrophobic self-cleaning properties. The coating exhibited good UV shielding rate and remained superhydrophobic after UV irradiation. The hierarchical structure of the sericite-rutile composite and the low surface energy of HDTMS contributed to the superhydrophobicity and UV shielding effect of the coating.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Kailang Sun, Taojun Zhang, Jie Zhou, Yonghong Liu, Minfeng Zeng, Zhen Yang, Ruokun Feng, Xiaorong Ren, Peng Zhang, Baoyi Wang, Xingzhong Cao
Summary: Chitosan-Pd0 nano particles encapsulated in Al, Co-pillared montmorillonite nanocomposites were successfully synthesized using a facile one-pot heat treatment method. The Al, Co pillaring effectively expanded the surface area and generated numerous mesopores in the interlayer space of the MMt. The resultant nanocomposite exhibited similar high comprehensive catalytic performances as the one prepared by the regular divided-multistep method. The encapsulation of CS chains and doping of Co in the Al pillaring also contributed to the improved catalytic performance.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Nathalie Fagel, Isabel Israde-Alcantara, Reza Safaierad, Marttiina Rantala, Sabine Schmidt, Gilles Lepoint, Pierre Pellenard, Nadine Mattielli, Sarah Metcalfe
Summary: Environmental conditions significantly influence clay minerals, and studying clay sediments in tropical lakes can provide valuable insights into past environmental conditions. In this study, multiproxy records from sediment cores of three crater lakes in central Mexico were analyzed. The results showed that disordered kaolinite, formed through hydrolysis and hydrothermal alteration, was the predominant mineral in the sediments. The abundance of kaolinite varied in relation to organic carbon and organic matter-related elements, and showed opposite trends with lithogenic elements. Geochemical data suggested that the increase in kaolinite abundance is linked to the formation of organo-mineral aggregates and lake level changes in closed basins.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
M. J. Martin-Alfonso, A. Mejia, F. J. Martinez-Boza, P. Partal
Summary: The drilling industry is facing new challenges to develop eco-friendlier drilling fluids. Organic modified sepiolite dispersed in oil can be an excellent additive with suitable rheological properties. This study investigated the effect of alkyl ammonium modifiers on the microstructure and rheological properties of sepiolite-vegetable oil dispersions under high-temperature and high-pressure conditions.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Weiquan Zhan, Siyuan Yang, Shenxu Bao, Liuyi Ren, Cheng Liu
Summary: The interaction between talc and the depressor CMC was investigated through molecular dynamics simulation and density functional theory calculation. It was found that CMC showed stronger adsorption on the edge plane of talc due to enhanced interactions with polar groups and water molecules. The study also revealed specific interactions between H atoms in CMC and O atoms in the edge plane, as well as between O atoms in CMC and Si, Mg atoms in the edge plane. Hydration shells on the basal and edge planes of talc were examined to explain the phenomenon.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Pierre Dramou, Yiyang Sun, Xu Ni, Fangqi Wang, Hua He
Summary: In this study, a magnetic nanocomposite was prepared and used for the separation of rutin from real samples through magnetic solid phase extraction (MSPE). The nanocomposite exhibited high specific surface area, chemical and thermal stability, water solubility, and easy separation in aqueous solution. Characterization and experiments confirmed the successful synthesis and efficient enrichment ability of the nanocomposite.
APPLIED CLAY SCIENCE
(2024)
