Article
Chemistry, Physical
Kabir O. Otun, Morena S. Xaba, Shuang Zong, Xinying Liu, Diane Hildebrandt, Salah M. El-Bahy, Zeinhom M. El-Bahy
Summary: In this study, NiO and NiO/Ni composite electrodes were synthesized using a double-linker MOF strategy, exhibiting higher specific capacitances and good capacitance retention in cycling tests. Electrochemical kinetic analysis indicated pseudocapacitive behavior of these electrodes, making them suitable for electrochemical energy storage applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
Nazish Parveen, Sajid Ali Ansari, Batool Taher Al-Abawi, Mohammad Omaish Ansari
Summary: Hierarchical three dimensional nanoflakes (H3DN) of nickel oxide (NiO) were successfully designed and grown on carbon microfibers (CMF) as a binder free electrode material for supercapacitor applications via a facile hydrothermal method, exhibiting superior electrochemical performance and cyclic stability.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Multidisciplinary
Ramya Ramkumar, Ganesh Dhakal, Jae-Jin Shim, Woo Kyoung Kim
Summary: Transition metal oxide aerogels have unique properties such as high porosity, large surface area, and ultralow density, making them a fascinating class of compounds. In this study, annealed NiO/Ni aerogels were used to fabricate a two-electrode supercapacitor device with high specific capacitance and cycling stability. The aerogels demonstrated good energy and power densities, showing their potential for practical applications in energy storage.
Article
Engineering, Chemical
Florencia Jerez, Paula Vitale, Marcela A. Bavio
Summary: This study synthesized ternary composites at laboratory and bench scale, with a possible evaluation for industrial scale-up. Polyaniline was synthesized on nickel oxide-carbon black (NiO-CB) using chemical polymerization, and modifications were made for bench scale production. The materials obtained at both scales showed similar physicochemical properties and excellent electrochemical performance.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Chemistry, Physical
Johnson William, I. Manohara Babu, G. Muralidharan
Summary: Ag incorporated NiO/CeO2 ternary mixed oxides were synthesized and their structural, morphological and electrochemical characteristics were analyzed. The results demonstrate that Ag incorporated NiO/CeO2 exhibits superior electrochemical performance, making it a suitable candidate for supercapacitor electrode fabrication.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Environmental
Jing Wang, Feng Zheng, Yi Yu, Pengfei Hu, Mingjun Li, Jiao Wang, Jifang Fu, Qiang Zhen, Sajid Bashir, Jingbo Louise Liu
Summary: Advanced supercapacitors with improved specific capacitance, long cycling life, high power density, and energy density are fabricated using ternary metal oxides nano-ribbon electrodes. The nano-grafting results in reactive interfaces with interpenetrating channels for efficient ion transport and electron conduction, significantly enhancing the supercapacitive performances.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Natasha Arshad, Muhammad Usman, Muhammad Adnan, Muhammad Tayyab Ahsan, Mah Rukh Rehman, Sofia Javed, Zeeshan Ali, Muhammad Aftab Akram, George P. Demopoulos, Asif Mahmood
Summary: Designing multifunctional nanomaterials for high performing electrochemical energy conversion and storage devices has been challenging. The researchers in this study reported the fabrication of a reduced graphene oxide-based ternary composite NiO/MnO2/rGO (NMGO) that had a range of active sites for enhanced electrochemical activity. The modified structure exhibited high conductivity, excellent charge storage capacity, and stability. The NMGO//MWCNT asymmetric device demonstrated good energy density, excellent power density, and capacitance retention.
Article
Materials Science, Multidisciplinary
Huidong Xie, Jie Li, Cheng Chen, Fangfang Dang, Yingying He
Summary: Four different composites were synthesized using a solvothermal method, showing that combining NiO with CuO or GO results in reduced crystallinity and grain size of NiO, while significantly improving specific capacitance. Among them, NiO/CuO-0.3/GO(-30) exhibited the highest specific capacitance.
Article
Chemistry, Physical
Mahasweta Chatterjee, Samik Saha, Sachindranath Das, Satyaranjan Bhattacharyya, Swapan Kumar Pradhan
Summary: In this work, CuO@NiO@MWCNT (CNC) ternary hybrid nanostructures were successfully synthesized solvothermally for energy storage applications, with CNC1 showing superior electrochemical performance. The optimized use of MWCNT in CNC1 resulted in better morphology, leading to a significant reduction in charge transfer parameters.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Hilal Pecenek, Fatma Kilic Dokan, M. Serdar Onses, Erkan Yilmaz, Ertugrul Sahmetlioglu
Summary: This research reports a facile and rational synthesis procedure to fabricate a high-performance supercapacitor electrode. The NiO/MnO2/CNT composite exhibits a wonderfully stratified flower-like morphology and shows high specific capacitance and good cyclic stability.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Chemistry, Physical
Maha Alanazi, Taher Ghrib, Filiz Ercan, Mizna Alsubaie, Tuna Demirci, Omer Kaygili, Tarek S. Kayed, Ismail Ercan
Summary: Heterojunctions of alternating MnO2 and NiO thin films were successfully synthesized and characterized. Increasing the number of NiO/MnO2 heterojunctions improves the electrical conductivity and specific capacitance, while reducing the bandgap.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Shradha Dutt, Sonali Verma, Anoop Singh, Prerna Mahajan, Bhavya Padha, Aamir Ahmed, Sheng-Joue Young, Vinay Gupta, Dena N. Qasim Agha, Sandeep Arya
Summary: This study investigates the structural and electrochemical performance of an electrodeposited MnO2/ rGO-conductive fabric nanocomposite as a binder-free electrode for supercapacitors. The results show significant capacitance and outstanding cyclic stability of the synthesized nanocomposite.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Guosheng Wang, Zhaoxiong Yan, Nenghuan Wang, Ming Xiang, Zhihua Xu
Summary: In this study, NiO/Ni metal-organic framework composites were successfully synthesized by tuning the conversion degree of NiO to Ni-MOF, leading to enhanced performance of the electrode material for supercapacitors. The assembled asymmetric supercapacitor with NiO/Ni-MOF-25 exhibited superior electrochemical performance and decent cyclic durability, achieving a high energy density and power density. This work provides a facile way to design and synthesize composite electrode materials for powerful supercapacitors.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Hilal Pecenek, Fatma Kilic Dokan, M. Serdar Onses, Erkan Yilmaz, Ertugrul Sahmetlioglu
Summary: This study reports a compressible supercapacitor electrode with high performance and compressibility, suitable for flexible electronics. The electrode is prepared by coating NiO/MnO2/CNT composite onto a sponge, demonstrating excellent cycling stability and mechanical stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Emre Cevik, Ayhan Bozkurt, Seyda Tugba Gunday, Talal F. Qahtan, Qasim A. Drmosh, Khaled A. Elsayed, Sultan Akhtar, Ayyaz Mustafa
Summary: In this research, metal oxide-based nanomaterials, NiO/Fe2VO4 (VFN), were synthesized via a facile sonication strategy and calcination, forming nano-hybrid materials with a size of 5-10 nm. Activated carbon (AC) based nanocomposite electrodes with VFN (5-15%) exhibited excellent physicochemical properties and conductivity. These nanocomposite electrodes showed promising electrochemical performance in supercapacitor applications using anhydrous glycerol/KOH gel electrolyte. The device with C/VFN15 electrodes displayed an excellent specific capacitance of 290 F g-1 at a current density of 1 A g-1 and a specific energy of 40 Wh kg-1 at a power of 250 W kg-1 with non-aqueous electrolyte. The material also exhibited promising cyclic stability and could retain 90% of its initial capacitance after 10,000 cycles. Additionally, a device with C/VFN15 showed better performance and could light up a RGB LED under various angles.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Weilu Wang, Xiangke Zeng, Shan He, Haidong Zhang, Guangming Jiang, Yang He, Yunqi Liu, Fan Dong, Xianming Zhang, Steven L. Suib
Summary: A series of Fe-doped alumino-borate catalysts (18% Fe-PKU-1) with different crystalline qualities were obtained by varying synthesis conditions. The crystalline quality was found to be correlated with the surface composition and electronic structure of Fe-PKU-1, especially for the boron species, as shown by Angle-resolved X-ray Photoelectron Spectroscopy, pyridine adsorption infrared spectroscopy, and potentiometric titration. By systematically changing the synthesis conditions, the catalyst with the appropriate crystalline quality exhibited the highest surface compositions of boron and oxygen vacancies, resulting in strong surface Lewis acidity and excellent catalytic performance in glycerin ketalization, with 97% conversion and 99% selectivity in DL-1,2Isopropylideneglycerol (Solketal).
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Engineering, Environmental
Yuhan Li, Bangfu Chen, Ping Ouyang, Youyu Duan, Wee-Jun Ong, Fan Dong
Summary: In this study, the specific reactive oxygen species (ROSs) for C6H6 photo-oxidation over ZnSn(OH)6 with hydroxyl vacancies (ZHS160) were identified as holes, electrons, H2O, and O-2/.O-2(-) except .OH. The well-designed ZHS160 exhibited exceptional photo-oxidation rate of low concentration C6H6, surpassing the pristine ZnSn(OH)6. The intermediates formed during the reaction were characterized using in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), gas chromatography-mass spectrometry (GC-MS), and density functional theory (DFT) simulations.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Zhilan Du, Dashuang Wang, Xinfang Zhang, Zhiyu Yi, Jihai Tang, Pingan Yang, Rui Cai, Shuang Yi, Jinsong Rao, Yuxin Zhang
Summary: A novel core-shell structure material, SiO2@NiFe LDH, was synthesized by a one-step hydrothermal method and spontaneous electrostatic self-assembly. The SiO2@NiFe LDH-3 nanocomposite showed excellent microwave absorption properties with a reflection loss of -53.78 dB and an effective absorption bandwidth of 8.24 GHz. It is expected to be a promising non-precious, metal-based microwave absorber for eliminating electromagnetic wave contamination.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Ruofei Tang, Hong Wang, Xing'an Dong, Shihan Zhang, Lili Zhang, Fan Dong
Summary: In this study, a high-energy ball milling method was used to fabricate single-atom nickel loaded on the surface of g-C3N4 catalyst, and the loading amount was optimized. The results showed that the uniform dispersion of single-atom nickel played a decisive role in enhancing catalytic performance. This study provides guidance for the design of photocatalysts with highly dispersed single-atom catalytic active sites.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Qing Sun, Xin Yang, Tie Shu, Xianfeng Yang, Min Qiao, Dashuang Wang, Zhaohui Liu, Xinghua Li, Jinsong Rao, Yuxin Zhang, Pingan Yang, Kexin Yao
Summary: In this work, C-N@NiFe2O4@MXene/Ni nanocomposites were successfully synthesized, and the overall dielectric properties were improved effectively due to the introduction of the C-N network structure. As a result, the composite achieved a minimum reflection loss of -50.51 dB at 17.3 GHz and an effective absorption bandwidth of 4.95 GHz (13.02-18 GHz) at an ultralow thickness of 1.5 mm. This research provides a novel strategy for materials to maintain good absorption performance at an ultralow thickness level.
Article
Biochemistry & Molecular Biology
Xin Yang, Tie Shu, Haoyu Huang, Hongquan Yi, Yanchi Zhang, Wei Xiao, Liang Li, Yuxin Zhang, Minghao Ma, Xingyuan Liu, Kexin Yao
Summary: By constructing a ZIF-8-derived ZnO/C/N composite (ZOCC) interface layer on the surface of the Zn anode, the uncontrolled dendrite growth in aqueous zinc ion batteries (AZIBs) is controlled, thus improving the stability and electrochemical properties.
Article
Chemistry, Physical
Qin Cheng, Ming Huang, Lei Xiao, Shiyong Mou, Xiaoli Zhao, Yuqun Xie, Guodong Jiang, Xinyue Jiang, Fan Dong
Summary: Rational engineering of oxygen vacancies in a metal oxide-based catalyst plays a crucial role in regulating catalytic performances for CO2 reduction. In this study, a facile and effective method was developed to prepare In2O3 nanorods with varying oxygen vacancy concentrations. The abundant oxygen vacancies in the catalyst significantly improved CO2 activation and achieved a high formate Faradaic efficiency with excellent stability. This work provides a feasible strategy to finely tune the oxygen vacancy concentration for highly efficient electrolytic CO2 reduction.
Article
Chemistry, Physical
Jielin Wang, Xin Li, Shujie Shen, Ruimin Chen, Qin Ren, Jieyuan Li, Fan Dong
Summary: By adjusting the concentration of dissolved oxygen, the selective generation of reactive oxygen species is quantified and can be used to regulate the oxidation selectivity of ammonia oxidation reactions.
Article
Biochemistry & Molecular Biology
Pingan Yang, Wenxian Ye, Haibo Ruan, Rui Li, Mengjie Shou, Yichen Yin, Xin Huang, Yuxin Zhang, Jiufei Luo
Summary: In this study, core-shell heterostructured nanocomposites (Fe NWs@SiO2) were successfully prepared, consisting of ferromagnetic nanowires (Fe NWs) as the core and silica (SiO2) as the shell. These composites exhibited enhanced electromagnetic wave absorption and oxidation resistance and were synthesized using a simple liquid-phase hydrolysis reaction. The microwave absorption properties of Fe NWs@SiO2 composites with different filling rates were tested and analyzed, with the sample filled with 50 wt% showing the best comprehensive performance. At a matching thickness of 7.25 mm, the minimum reflection loss (RLmin) could reach -54.88 dB at 13.52 GHz and the effective absorption bandwidth (EAB, RL < -10 dB) could reach 2.88 GHz in the range of 8.96-17.12 GHz. The enhanced microwave absorption performance of the core-shell structured Fe NWs@SiO2 composites could be attributed to the magnetic loss of the composite, the core-shell heterogeneous interface polarization effect, and the small-scale effect induced by the one-dimensional structure. Theoretically, this research provided Fe NWs@SiO2 composites with highly absorbent and antioxidant core-shell structures for future practical applications.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Multidisciplinary Sciences
Yangyang Yu, Ye He, Ping Yan, Shengyao Wang, Fan Dong
Summary: The selective photocatalytic conversion of CO2 and H2O to high value-added C2H4 can be achieved by alloying Cu with Ag on TiO2, overcoming the difficulties in C-C coupling and desorption of C2H4* intermediates. The optimized Cu-Ag ASNCs catalyst exhibits a significantly enhanced C2H4 formation rate and selectivity compared to current work.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Chemistry, Multidisciplinary
Xueli Mei, Xueyang Zhao, Yaoyao Chen, Bangwei Deng, Qin Geng, Yali Cao, Yizhao Li, Fan Dong
Summary: This study reports that Fe-doped CeO2 can be used as an effective catalyst for the synthesis of H2O2, exhibiting high 2e-ORR performance compared to pristine CeO2. The doping of Fe leads to lattice distortion and the formation of oxygen vacancies and Ce3+, thereby improving the activity of Fe-CeO2 for 2e-ORR. The prepared Fe-CeO2-3 catalyst shows optimal 2e-ORR performance with certain Fe doping amount and calcination temperature.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Lei Xiao, Weidong Dai, Shiyong Mou, Xiaoyan Wang, Qin Cheng, Fan Dong
Summary: In this study, a new method was developed to electrocatalytically reduce nitrate to ammonia using formaldehyde oxidation reaction as an intermediate step. This method achieved a high conversion rate with reduced voltage requirement, leading to energy and carbon emission savings. Furthermore, this method also allowed simultaneous treatment of formaldehyde and nitrate pollutants in wastewater.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Chuan Jing, Jinyu Ma, Qing Sun, Yanhong Li, Xiao Tang, Faling Ling, Yongjie Wang, Wendong Zhang, Xianju Zhou, Yuxin Zhang
Summary: This study prepared a series of MOF-based derivatives using suitable methods and evaluated their electrochemical performance. It was found that phosphating treatment can enhance the material's electrical conductivity, while the layered structure facilitates the intercalation/deintercalation of electrolyte ions, and oxidation inhibits the release of electrochemical performance. Therefore, the enhancement effect in terms of electrochemical performance is ranked as follows: phosphorization > layer structure > oxidation. This study provides reliable criteria for the design and screening of advanced electrode materials.
Article
Engineering, Environmental
Ruimei Fang, Xinyue Huang, Xiao'ai Luo, Yanjuan Sun, Zixun Liu, Liang Ao, Fan Dong, Haibao Huang
Summary: Engineering oxygen vacancies on 6-MnO2 is an efficient strategy to enhance its catalytic activity for formaldehyde oxidation. In this study, a reductant-based redox method was used to enrich oxygen vacancies on 6-MnO2 catalysts. Different reductants were employed during preparation process, and isopropanol was found to be the best reductant, resulting in excellent stability and catalytic activity of the MnO2-Iso catalyst.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Shupei Liu, Xinfang Zhang, Jinsong Rao, Liang Yu, Wei Lu, Huan Zhou, Shibo Chen, Yuxin Zhang, Xiaoying Liu
Summary: In this study, Ni-Co/DE@SP microcapsules with corrosion inhibitor were successfully prepared, exhibiting improved anti-corrosion performance, good adsorption capacity, and enhanced wear resistance in NaCl solution.