Article
Chemistry, Applied
Xiuxuan Fang, Yingzhi Zhu, Haotian Dong, Na Ma, Wei Dai
Summary: In this work, a (MOF-818)-on-(Cu-BTC) composite was designed and synthesized to enhance water-stability and desulfurization. The composite showed remarkable sulfur capture ability and retained its structural integrity even in water. This novel approach provides a new idea for adsorptive desulfurization in the presence of water environment.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Environmental
Yan Yin, Yueyang Xu, Konglu Guo, Peng Zhang, Yongping Zeng
Summary: In this study, it was found that Cu+ cation plays a significant and highly effective role in adsorptive desulfurization in Cu+-modified UiO-66(Zr), leading to improved adsorption capacity for thiophene.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Chaofeng Huang, Yibin Tong, Junqing Li, Junchen Peng, Dandan Dong, Yajuan Chen, Minmin Liu, Wei Sun, Qinqin Wang, Mingyuan Zhu, Fei He
Summary: In this study, a simple protonation strategy was implemented to enhance the adsorption capability of Cu-N-C for desulfurization. The protonation not only increased the bonding strength between Cu-N-C and organosulfur but also reconstructed the positive electric field of Cu-N-C, resulting in accelerated mass transfer and higher adsorption kinetics. This research is of great significance for adsorption-related catalysis, separation, and purification.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yu -Yang Gu, Guoliang Liu, Shi-Chao Qi, Chen Gu, Tao Yang, Xiao-Qin Liu, Lin -Bing Sun
Summary: For the first time, PMOFs decorated with Cu2O active sites and functionalized with azobenzene have been prepared, allowing for controllable adsorption of benzothiophene through light regulation.
Article
Chemistry, Physical
Yu -Yang Gu, Guoliang Liu, Shi-Chao Qi, Chen Gu, Tao Yang, Xiao-Qin Liu, Lin -Bing Sun
Summary: In this study, we prepared photo-switchable metal-organic frameworks decorated with Cu2O active sites, showing controllable guest capture. The obtained PMOFs exhibited higher adsorption capacity due to strong interaction with guest molecules. The azobenzene moieties in the PMOFs could freely switch between trans and cis isomerization upon light irradiation, leading to controlled exposure and shelter of the active sites for tailored guest capture.
Article
Engineering, Chemical
Jia-Xin Shen, Shi-Xian Mao, Li Wan, Wen-Xuan Wu, Meng-Meng Jin, Yu-Xia Li, Xiao-Qin Liu, Lin-Bing Sun
Summary: By grafting octadecylphosphonic acid (OPA) onto metal nodes on the surface of metal-organic frameworks, a superhydrophobic microenvironment has been tailored to stabilize CuI against oxidation. The research results demonstrate that modifying surface properties can enhance the activity and stability of Cu(I) materials, showing potential applications in desulfurization and other fields.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Yan Zhang, Haryo Wibowo, Li Zhong, Mika Horttanainen, Zunbo Wang, Caimeng Yu, Mi Yan
Summary: This study investigated different CO2 adsorbents and found that Mg/Cu-BTC@MWCNT had the highest CO2 adsorption capacity and selectivity under various conditions. Additionally, regeneration experiments showed that Mg/Cu-BTC@MWCNT exhibited high stability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Review
Energy & Fuels
Saheed A. Ganiyu, Saheed A. Lateef
Summary: This review focuses on the milestones achieved over decades regarding different non-carbonaceous adsorbents for adsorptive desulfurization of sulfur compounds in liquid fuels, discussing the synthesis strategies, adsorption mechanisms, cost effectiveness, efficiency and other factors affecting the performance and operability of adsorbents.
Article
Chemistry, Physical
Shu Shi, Yu-Xia Li, Shuai-Shuai Li, Xiao-Qin Liu, Lin-Bing Sun
Summary: Cu+-containing materials have promising applications in adsorption and catalysis. A mild and controllable approach for Cu+ site fabrication has been a challenge. This study presents a novel double-solvent strategy for Cu+ site fabrication in MIL-101(Cr). The resulting Cu+-modified MIL-101(Cr) exhibits good desulfurization performance.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Engineering, Chemical
Shivam Singh Tomar, Nishith Verma, K. D. P. Nigam
Summary: This study proposes an enhanced radial mixing approach in coiled flow inverter (CFI) as an alternative to packed bed adsorptive desulphurization (ADS). Cu-carbon nanofiber (Cu-CNF) was synthesized using Cu-tartrate as the precursor and applied in the ADS process of liquid fuels in CFI. Experimental results showed that Cu-CNF slurry effectively removed thio-phene from n-hexane, achieving a sulfur (S) loading of 103 mg/g at a thiophene concentration of 2000 ppmw-S and a flow rate of 120 cc/min using five CFI units connected in series. Recycling was introduced in CFI for the first time, and three CFI units connected in series with a recycle ratio of 2 achieved the same removal efficiency as five CFI units without recycling. The results indicate that CFI is an efficient technology with the potential to replace packed bed adsorbers.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Kubra Akin, Volkan Ugraskan, Birol Isik, Fatih Cakar
Summary: This study investigated the performance of montmorillonite-filled SA-GEL-MMT ternary biocomposite microbeads in the adsorptive removal of crystal violet dye. The maximum removal of the dye was found to be 92.1% under specific conditions. The kinetic studies showed that the adsorption of the dye followed pseudo-second-order kinetics. The use of SA-GEL-MMT was found to be highly effective and reusable for wastewater treatment.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Applied
Yang Zhao, Yuxiang Chen, Cheng Qian, Hao Wang, Hao Jiang, Cheng Niu, Junhao Gai, Qiyue Zhao, Yue Lou, Benxian Shen, Di Wu, Hui Sun, Yujun Tong
Summary: This study presents a synthesis approach for AgY@Cu-BTC hybrid composite to enhance sulfides capture and moisture resistance. Characterizations, computational simulation, and dynamic adsorption measurement were conducted to evaluate the adsorption performance. The results show that AgY@Cu-BTC exhibits higher adsorption capacity and better moisture resistance for sulfides compared to the individual components.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Qiuping Fu, Denghong Shi, Changli Mo, Jie Lou, Shaoqi Zhou, Lei Zha, Jialin Wang, Wei Yan, Jun Luo
Summary: In this study, a porous foam-like composite Cu-BTC@agarose (Cu-BTC@AG) was prepared by compounding high crystallinity Cu-BTC with agarose to solve the problem of difficult recovery when Cu-BTC is used in water treatment. The adsorption behavior of Cu-BTC@AG towards methylene blue (MB) in wastewater was systematically studied, and the adsorption mechanism was explored using isothermal adsorption and adsorption kinetics models. The results showed that the adsorption capacity of Cu-BTC@AG for MB increased with increasing MB initial concentration and reached equilibrium within 120 minutes.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Chemistry, Physical
Yunping Wei, Nan Wang, Xingcen Liu, Meng Lin
Summary: In this experiment, a Cu-BTC metal-organic framework was prepared and used to compose a TA-Cu complex. The modified electrode showed good performance as an electrochemical glucose sensor, with a linear response to glucose concentration, high sensitivity, low detection limit, and good stability.
Article
Chemistry, Analytical
Xuesong Shan, Keru Song, Siyu Huang, Jianwen Wang, Fengyue Shi, Dongyu Zhao
Summary: The annealing approach is utilized to synthesize carbon-based materials, specifically by using polystyrene microspheres as a template to composite with carbon nanotubes loaded with Cu-Ni ions. Subsequent high-temperature treatments result in the formation of a three-dimensional porous structure and attachment of Cu-Ni ions to the material. Coating the material with polyaniline and conducting additional high-temperature treatments achieves nitrogen doping. Electrochemical analysis demonstrates that the materials exhibit high specific capacitance and excellent capacitance retention rate, while the assembled supercapacitor possesses outstanding energy and power density.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
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)