Article
Energy & Fuels
Yibo Zhao, Lu Chang, Wenjing He, Shuyue Xu, Keling Liu, Tingting Huang, Yueyang Li, Minjie Cui, Jiyan Xie
Summary: Polyaniline-based carbon nanofibers were treated with a mixed acid and then reacted with potassium permanganate to obtain manganese dioxide/carbon nanofiber composites. The effects of acid treatment time, reaction temperature, reactant ratio, and the addition method of potassium permanganate on the electrochemical properties of composites were thoroughly studied. The results showed that the optimization parameters were 6 h for acid treatment time, 70 degrees C for reaction temperature, and a reactant ratio of 1:2. In addition, sufficient mixing of the reactants in advance was crucial for the formation of uniformly shaped MnO2 nanoflakes. The acid treatment increased the specific capacitance of the composites from 88.7 to 166.7 F/g, and the composites achieved a lifespan of up to 1000 cycles with 85.08% capacity retention.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
R. Packiaraj, Kamaraj Mahendraprabhu, P. Devendran, N. Nallamuthu, Baskaran Palanivel, K. S. Venkatesh, Ramesh Karuppannan
Summary: This research successfully prepared single-metal oxides, binary-metal oxides, and ternary mixed-metal oxides through simple methods, showing that mixed transition-metal oxides can exhibit superior electrochemical performance compared to single and binary metal oxides by tuning their structure and properties. The fabricated electrode materials showed excellent capacitance and energy storage capabilities, making them promising for high-performance energy storage device applications.
Article
Chemistry, Physical
Longbiao Yu, Rui Zhang, Ruixin Jia, Wenhao Jiang, Xiaoyu Dong, Xuehua Liu, Haijie Cao, Binghui Xu
Summary: This study synthesized nanosized cobalt monoxide anode material and nanosized lithium cobalt oxide cathode material using few-layered graphene oxide and metallic cobalt foils through a hydrothermal reaction. Both the CoO@RGO anode and the LCO cathode exhibited impressive lithium-ion storage properties.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Deyao Xu, Xuanda Long, Juanxiu Xiao, Zhiliang Zhang, Guiyu Liu, Haixia Tong, Zeng Liu, Neng Li, Dong Qian, Junhua Li, Jinlong Liu
Summary: Constructing CoO-CoSe2 heterostructures through partial selenization of CoO and using reduced graphene oxide as a platform, a novel hybrid material (CoO-CoSe2@N-CNTs/rGO) with excellent electrocatalytic performance for oxygen evolution reaction was successfully fabricated. The exceptional performance is attributed to the synergistic effect between CoO and CoSe2, N doping effect in CNT and rGO, and the confining effect of N-CNTs and rGO for CoO-CoSe2, resulting in more active sites and enhanced conductivity.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Elvira Rozhina, Svetlana Batasheva, Regina Miftakhova, Xuehai Yan, Anna Vikulina, Dmitry Volodkin, Rawil Fakhrullin
Summary: This study compared the interactions of carbon nanomaterials and nanoclays with human lung adenocarcinoma cells, finding that carbon nanomaterials were more toxic and genotoxic to cells. The shape of the nanomaterials did not significantly affect their internalization and cytotoxicity.
APPLIED CLAY SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Md Faruk Hossain, Gymama Slaughter
Summary: This work presents a highly sensitive non-enzymatic NO biosensor using functionalized nanomaterials, demonstrating good electrocatalytic activity and detection performance. By selectively allowing NO passage and limiting interference from other species, the sensor shows good reproducibility, selectivity, and stability, promising potential for NO monitoring applications.
MICROELECTRONIC ENGINEERING
(2021)
Article
Polymer Science
Naveen Chandra Joshi
Summary: In this study, a zirconia/polythiophene nanocomposite was successfully synthesized for supercapacitors. The synthesis method was efficient and cost-effective. The nanocomposite exhibited high specific capacitance, cyclic stability, energy density, and power density.
Article
Chemistry, Physical
Ieva Vanskevice, Mariya A. Kazakova, Jan Macutkevic, Nina V. Semikolenova, Juras Banys
Summary: In this paper, the dielectric properties of hybrid polyethylene composites containing cobalt nanoparticles and multi-wall carbon nanotubes (MWCNT) were investigated for electromagnetic shielding applications. It was found that the complex dielectric permittivity of the composites increased with higher MWCNT concentrations, and composites with high concentrations of fillers had high microwave absorption, making them suitable for electromagnetic shielding applications.
Article
Materials Science, Multidisciplinary
Biao Zeng, Pin Zhang, Hongjian Li, Yuhui Peng, Longlong Qin, Zewen Qu, Leilei Qiu, Xiaohui Gao, Shengxiang Huang, Lianwen Deng
Summary: The magnetic nitrogen-doped carbon nanotubes (Co@NCNTs) coated with cobalt nanoparticles have strong dielectric loss, magnetic loss and electromagnetic wave absorption performance, with a minimum reflection loss value of -21.0 dB at 4.96 GHz. The thin-wall carbon nanotubes show potential as high-efficiency EMW absorbers due to their unique structure and properties.
RESULTS IN PHYSICS
(2021)
Article
Chemistry, Inorganic & Nuclear
Xue Zhao, Xiyan Liu, Feng Yang, Qidong Liu, Zeyao Zhang, Yan Li
Summary: By using graphene oxide as a support, well-dispersed CoWO4 nanoparticles were prepared to facilitate the controlled growth of single-walled carbon nanotubes. CoWO4 proved to be a superior catalyst precursor for obtaining nanoparticles with a well-controlled size, while graphene oxide acted as a feasible substrate to ensure the uniform formation and dispersibility of nanoparticles in aqueous solution. This strategy may have broad applications in the preparation of various functional nanomaterials.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Energy & Fuels
Yuri Zakharov, Galina Simenyuk, Ekaterina Kachina, Valery Pugachev, Vadim Dodonov, Denis Yakubik, Tatiana Trosnyanskaya, Zinfer Ismagilov
Summary: Nanostructured composites (NSCs) based on multiwalled carbon nanotubes (MWCNTs) filled with individual and mixed Ni/Co hydroxides nanoparticles were prepared, showing a significant increase in electrical capacitance, especially within the 5-10 wt% filler content range. The precipitation process of hydroxides also plays a role in influencing the morphology and capacitance performance of the fillers.
Article
Environmental Sciences
Krassimira Ilieva-Makulec, Anna Augustyniuk-Kram, Izabella Olejniczak, Kamil Karaban, Marek Nowicki, Tomasz Runka, Andrzej Kulczycki, Jaroslaw Kaluzny
Summary: The study found that multiwalled carbon nanotubes had a potential impact on soil organisms, especially with higher sensitivity in nematodes. Contamination by CNTs significantly affected the dynamics and diversity of soil fauna and microbial communities, potentially leading to long-term consequences for soil functioning and nutrient cycling.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Multidisciplinary
Muhammad Afaq, Muhammad Shahid, Iqbal Ahmad, Sheraz Yousaf, Amira Alazmi, M. H. H. Mahmoud, Islam H. El Azab, Muhammad Farooq Warsi
Summary: A mixed-phase Co3O4-CoFe2O4@MWCNT nanocomposite was synthesized through a large-scale and cheap ultrasonication followed by annealing. The synthesized catalysts were characterized through XRD, FTIR, and SEM, and then tested for bifunctional electrocatalytic activity. The Co3O4-CoFe2O4@MWCNT nanocomposite showed higher current density and smaller Tafel slope compared to Co3O4-CoFe2O4, due to the uniform incorporation of Co3O4-CoFe2O4 and the enhanced electrochemical active surface of MWCNTs. The results demonstrate the potential of the synthesized nanocomposite for high-potential energy applications.
Article
Chemistry, Multidisciplinary
Shaoying He, Junqin Huang, Qiang Zhang, Wan Zhao, Zhiai Xu, Wen Zhang
Summary: An artificial nanozyme N-CNTs@Co with efficient oxidase-mimicking activity was developed in this study, showing a higher activity compared to iron-centered nanomaterials. It can catalyze oxygen to produce reactive oxygen species, leading to a favorable antibacterial effect against Staphylococcus aureus and Escherichia coli. The nanozyme exhibited high antibacterial efficiency without the development of resistance in bacteria and was further confirmed in wound healing experiments in vivo.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Energy & Fuels
Runze He, Xingyu Huang, Ligang Feng
Summary: This article systematically and comprehensively reviews the recent advances in electrocatalytic performance and optimization strategies of transition-metal sulfides for oxygen evolution reaction (OER). By optimizing the structure and chemical states, the intrinsic activity of metal sulfides has been enhanced. Challenges and opportunities in further developing high-activity and long-term durable metal sulfide materials are also discussed. Additionally, problems and future challenges in improving the catalytic performance of metal sulfide materials are presented.
Article
Chemistry, Physical
Swati Panda, Sugato Hajra, Haejin Jeong, Basanta Kumar Panigrahi, Phakkhananan Pakawanit, Deepak Dubal, Seonki Hong, Hoe Joon Kim
Summary: A polymeric composite material based on calcium titanate was developed as a piezoelectric nanogenerator for energy harvesting. This material showed improved electrical performance and biocompatibility. The device could collect signals generated from skipping exercises and monitor human health using digital signal processing techniques and artificial neural networks.
Article
Chemistry, Physical
Swapnil Sanjay Karade, Raghunandan Sharma, Saso Gyergyek, Per Morgen, Shuang Ma Andersen
Summary: It is challenging to reduce the noble-metal loading in oxygen evolution reaction (OER) catalysts while maintaining their catalytic performance. This study introduces a highly active OER catalyst, IrO2@Ir/TiN, composed of IrO2 with Ir rich surface nanoparticles supported over nano TiN coated with TiOxNy. The catalyst exhibits superior OER performance with small, uniformly dispersed IrO2@Ir nanoparticles and high durability due to robust catalyst support and strong catalyst-support interaction. The synthesized IrO2@Ir/TiN catalyst with 40 wt % Ir loading shows a mass-normalized OER activity of 637 Ag-Ir(-1), which is 2.4 times higher than that of the commercial benchmark IrO2 OER electrocatalyst. The catalyst also demonstrates excellent durability (79 % retention) compared to the commercial equivalent (66 % retention) during an accelerated stress test.
Article
Chemistry, Multidisciplinary
Amar M. Patil, Sunil Moon, Youngho Seo, Sanjib B. Roy, Arti A. Jadhav, Deepak P. Dubal, Keonwook Kang, Seong Chan Jun
Summary: This study demonstrates the unique core-shell architecture of metal organic framework derived N-S codoped carbon@CoxSy micropetals decorated with Nb-incorporated cobalt molybdate nanosheets, which significantly improves the electrochemical performance of high-energy-density battery-type materials. The optimized electrode exhibits a high specific capacity and excellent cycle stability. A flexible quasi-solid-state supercapacitor with a layer-by-layer deposited reduced graphene oxide/Ti3C2TX anode also achieves high specific energy and capacity retention over 10,000 charge-discharge cycles.
Article
Materials Science, Multidisciplinary
Helapiyumi Weerathunga, Thu Trang Do, Hong Duc Pham, Robert Jones, Jennifer MacLeod, TaeYoung Kim, Deepak Dubal
Summary: A freestanding, ultra-flexible, and washable joule heater was developed using a biocompatible poly(styrene-isoprene-styrene) (SIBS) polymer as binder and carbon black (CB) as heating material. The heater exhibited a minimum resistivity and conductivity of 26 m omega cm and 7.4 S cm(-1), respectively. It also demonstrated excellent stability and performance even after mechanical property tests such as bending, repetitive bending, twisting, and washing.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Physical
Mahesh Y. Chougale, Muhammad Umair Khan, Jungmin Kim, Jordan Cosgrove, Rayyan Ali Shaukat, Qazi Muhammad Saqib, Maniram Banjade, Swapnil R. Patil, Cameron Brown, Deepak Dubal, Jinho Bae
Summary: This study investigates the use of snake ecdysis as advanced electronic materials for energy harvesting, sensing, and storage applications. The snake ecdysis exhibits high porosity, flexibility, piezo-sensitivity, and tribopositivity, making it suitable for developing high-performance piezoelectric and triboelectric devices. The results demonstrate the potential of snake ecdysis for sustainable self-driven electronic devices.
Article
Green & Sustainable Science & Technology
Chinmayee Padwal, Hong Duc Pham, Linh Thi My Hoang, Sagadevan Mundree, Deepak Dubal
Summary: Biomass, such as agricultural waste, is a sustainable source for electrode materials production in energy storage systems. The pre-treatment of biomass is crucial for determining material quality and device performance. Traditional methods using aggressive chemicals pose environmental and health risks. This study introduces deep eutectic solvents (DES) as green, inexpensive, and effective solvents for rice-husk biomass pre-treatment. The results show that DES efficiently removes inorganic impurities while preserving organic content. DES-treated rice-husk is then transformed into silicon/carbon nanocomposites, which exhibit excellent electrochemical properties for lithium-ion batteries.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Baliram Nadekar, Girish S. Gund, Yogesh B. Khollam, Shoyebmohamad F. Shaikh, Dattatray S. Wavhal, Deepak P. Dubal, Pravin More
Summary: With the rapid growth in the manufacturing industry, the emission of hazardous volatile organic compounds (VOCs) has increased, leading to a demand for highly sensitive, selective, and stable gas sensors. We have addressed the issues associated with chemoresistive alcohol sensors by using iodine-doped polyvinyl acetate (IPVAc) films, which offer benefits like low power consumption, ease of manufacture, and long-term stability. These films demonstrated high selectivity for alcohols over other VOCs and stable sensitivity performance over a wide temperature range. Therefore, plasma-polymerized IPVAc films can be applied for highly selective, sensitive, and stable VOC sensing applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
M. Barclay, K. Firestein, X. Wang, N. Motta, D. Dubal, K. Ostrikov
Summary: Non-thermal atmospheric pressure plasma is used to assist the synthesis of high specific capacitance MnO2 supercapacitor materials, with the addition of plasma-activated water (PAW) providing an efficient approach and promoting hydration of electrode materials. The use of PAW improves both the specific capacitance and cycle stability of the electrodes.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Agricultural Engineering
Shahrooz Rahmati, Luqman Atanda, Athukoralalage Don K. Deshan, Lalehvash Moghaddam, Deepak Dubal, William Doherty, Kostya (Ken) Ostrikov
Summary: Due to the increasing energy consumption and population growth, there is a need for alternative resources to produce chemicals and energy, leading to the pursuit of a circular economy. Lignocellulosic biomass, specifically sugarcane bagasse, can be converted into high-value products in sustainable lignocellulose biorefineries. In this study, autohydrolysis treatment of sugarcane bagasse was developed using low-temperature plasma and ball-mill treatment to produce xylooligosaccharides (XOS) with a variable degree of polymerization.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Multidisciplinary
Jinhu Wang, Reza Abazari, Soheila Sanati, Aleksander Ejsmont, Joanna Goscianska, Yingtang Zhou, Deepak P. P. Dubal
Summary: Urea oxidation reaction (UOR) is a promising alternative to water oxidation for green hydrogen production. A water-stable fluorinated Cu(II) metalorganic framework (Cu-FMOF-NH2) was developed as a resistant, low-cost, and environmentally friendly electrocatalyst. Cu-FMOF-NH2 exhibited superior performance to other catalysts, including commercial RuO2 catalyst, achieving high current density at low voltage.
Article
Green & Sustainable Science & Technology
Hong Duc Pham, Syam G. Krishnan, Tony Wang, Joseph F. S. Fernando, Chinmayee Padwal, Dmitri V. Golberg, Deepak P. Dubal
Summary: Due to the rapid expansion of the portable electronics and electric vehicles market, the demand for rechargeable batteries is huge and may lead to a shortage of critical minerals, particularly nickel. This study successfully upcycled nickel oxide (NiO) material from spent nickel-metal hydride batteries to develop sustainable electrodes for lithium-ion batteries and supercapacitors. The recycled NiO showed promising capacity as a cathode material, exhibiting excellent rate capability and cycle life in traditional electrolytes. This upcycling process offers a potential solution for future generation energy storage devices and sustainable supply of critical minerals, contributing to a clean environment.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2023)
Article
Green & Sustainable Science & Technology
Somnath Khaladkar, Girish Gund, Oshnik Maurya, Bhavesh Sinha, Paresh Salame, Deepak Dubal, Rajendra Deshmukh, Archana Kalekar
Summary: A unique architecture of NiSe nanoparticles decorated on reduced graphene oxide (rGO) has been developed, which significantly improves the electrochemical performance of NiSe. The hybrid supercapacitor based on NiSe/rGO demonstrates a high energy density and good cyclic stability, making it a promising candidate for high-performance hybrid supercapacitors.
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Xijue Wang, Hong Duc Pham, Chinmayee Padwal, Tony Wang, Joseph F. S. Fernando, Kostya (Ken) Ostrikov, Dmitri Golberg, Deepak Dubal
Summary: The surging demand for high-energy cathode materials, driven by the increasing adoption of lithium-ion batteries in electric vehicles, renewable energy storage, and portable electronics, has prompted researchers to explore new methods for their production. This investigation presents a promising approach using ultrfast microwave solid-state process to synthesize high-voltage LiNi0.5Mn1.5O4 (LNMO) cathode materials. Microwave irradiations not only greatly accelerate the reaction kinetics, leading to a much shorter synthesis time, but also enhance the homogeneity and performance of LNMO cathode. The results demonstrate the potential of this method in manufacturing oxide materials for energy storage applications.
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
(2023)
Review
Chemistry, Multidisciplinary
Reza Abazari, Soheila Sanati, Majed A. Bajaber, Muhammad Sufyan Javed, Peter C. Junk, Ashok Kumar Nanjundan, Jinjie Qian, Deepak P. Dubal
Summary: Metal-organic frameworks (MOFs) are a new family of materials with unique features such as hierarchical porosity, active metal centers, and large surface area. Zr-based MOFs, including NU-1000, demonstrate superior stability and are ideal for energy and environmental applications. This review provides a comprehensive overview of the synthesis, unique surface properties, and applications of NU-1000 MOFs in catalysis, CO2 reduction, batteries, hydrogen storage, gas storage/separation, and other environmental fields. The current challenges and future directions for NU-1000 MOFs in practical applications are also discussed.
Article
Chemistry, Physical
Suaad A. Alomari, Deepak P. Dubal, Jennifer Macleod, Sagar Jadhav, Chinmayee Padwal, Nunzio Motta
Summary: This study demonstrates the great potential of 3D nitrogen and phosphorus co-doped holey rGO aerogel (NPHG) cathodes for high-performance lithium-ion capacitors by utilizing a simple and low-cost hydrothermal method to fabricate the material.
APPLIED SURFACE SCIENCE
(2023)