Article
Chemistry, Physical
Weixia Dong, Hao Wang, Qifu Bao, Xingyong Gu
Summary: Novel CaTi2O4(OH)(2) ultrathin nanosheets were successfully synthesized without using surfactant or template. The silk-like nanostructures exhibited high specific surface area, leading to excellent electrochemical performance as electrode materials for capacitors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Crystallography
Yunfei Du, Zhijie Xin, Guodong Li, Taotao Li
Summary: Ni(OH)(2) hexagonal nanoplates with different edge lengths were successfully prepared in large scale using NiCl2 and NaOH as raw materials via a simple hydrothermal route. The stacked Ni(OH)(2) structure consisted of a certain number of parallel Ni(OH)(2) hexagonal nanoplates along the (001) direction, each with a single-crystal structure and exposed planes of (001), (00-1), and (100). The formation mechanism of the stacked Ni(OH)(2) structures was discussed based on the crystal structure of Ni(OH)(2).
Article
Chemistry, Physical
Durai Govindarajan, Govindasamy Murugadoss, Kamalan Kirubaharan, Rajesh Kumar Manavalan, Gunasekaran Manibalan, Jasmin Shaikh, Mohammad Etesami, Soorathep Kheawhom
Summary: CuO-Ni(OH)2 nanocomposite-based electrode materials, synthesized by a facile low temperature chemical precipitation technique, exhibit impressive electrochemical supercapacitive behavior. Characterization analyses, including XRD, FT-IR, FE-SEM, TEM, and XPS, confirm the structure, phase purity, and surface chemical properties of the prepared nanocomposite. The CuO-Ni(OH)2 composite electrode shows high specific capacitance and superior OER performance, making it a promising alternative electrode for energy storage devices and electrochemical energy devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Environmental Sciences
Sultana Shaik, Rama Mohana Reddy Sirigireddy, Kumar Godugu, Venkatramu Vemula, Raghava Reddy Kakarla, Ekambaram Balaraman, Chinna Gangi Reddy Nallagondu, Tejraj M. Aminabhavi
Summary: An environmentally friendly FCDR strategy has been developed for the synthesis of (Z)-THIs using silica-supported perchloric acid as catalyst, with high stereospecificity. The method offers a wide substrate scope, high product yields, short reaction times, and reusable catalyst.
Article
Energy & Fuels
Ghulam Nabi, Rizwan Rafique, Abdul Majid, Waseem Raza, Thamer Alharbi, Mansour Alhabradi
Summary: In this study, vanadium-doped Co(OH)2 hexagonal nanosheets were successfully synthesized, exhibiting excellent electrochemical performance. With the increase in vanadium doping concentration, the morphology transformed from hierarchical structures to hexagonal nanosheets. Vanadium doping increased the specific capacitance, with a maximum capacitance of 1357 F/g. Furthermore, the sample showed a high capacitance retention of 89% after 3000 CV cycles. These improvements are attributed to the optimized nanosheet-based morphology and appropriate vanadium doping.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Maria Poienar, Bogdan-Ovidiu Taranu, Paula Svera, Paula Sfirloaga, Paulina Vlazan
Summary: The thermal behavior of the mixed valence iron oxides Fe-3(PO4)(2)(OH)(2) is investigated in this research paper under different atmospheres. The structure, morphology, and magnetic properties of the iron phosphates samples are analyzed, and the electrocatalytic properties of synthetic barbosalite Fe-3(PO4)(2)(OH)(2) materials for oxygen and hydrogen evolution reactions are studied. These findings provide important insights into the field of water splitting.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Dong Hyun Lee, Juyoung Baek, Dong Hwan Kim, Jong Wook Roh, Jeongmin Kim, Damin Lee
Summary: Transition metal-based binary and ternary compound arrays were grown directly on a porous Ni foam substrate using a one-step hydrothermal method. The ternary electrode with Ni, Cu, and Zn ions showed a larger surface area and higher entropy than the binary compounds, leading to a shorter diffusion path for electrolyte ions and improved charge transfer. The optimized NixCuyZnz(CO3)(OH)(2) compound exhibited a higher specific capacity and cycling stability than the binary electrode. An asymmetric supercapacitor fabricated with this compound showed high energy density and electrical properties in an illuminated LED device.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Multidisciplinary
Shima Moosakhani, Hamidreza Daghigh Shirazi, Simo-Pekka Hannula
Summary: CuSbS2 nanotubes were successfully prepared using AAO template and hot-injection method, with an average diameter of 200 nm and a wall thickness of 40 nm. Optical and electrochemical characterizations showed that the CuSbS2 NTs exhibit p-type conductivity, suitable band gap, as well as valence band and conduction band positions comparable to conventional materials used in solar cells.
Article
Chemistry, Multidisciplinary
Gyu Hyun Jeong, Hye Soung Jang, Jong Chan Yoon, Zonghoon Lee, Jieun Yang, A-Rang Jang, Gyeong Hee Ryu
Summary: A surfactant-assisted method was used to synthesize Zn(OH)2 nanosheets, and the thickness and shape of the synthesized nanosheets were controlled by varying the surfactant concentration. The characteristics of oxygen evolution reaction using ZnO/Zn(OH)2 nanosheets as catalysts were also studied.
Article
Materials Science, Multidisciplinary
Yunfeng Zhao, Yifu Zhang, Yan Cheng, Wensheng Zhao, Wenjie Chen, Changgong Meng, Chi Huang
Summary: The study synthesized a core-shell structure Co2SiO4@Ni(OH)2, which improved the electrochemical performance of cobalt silicate, exhibiting a specific capacitance superior to individual materials. This work applied the core-shell structure to electrode design, providing a new approach for the development of supercapacitors.
Article
Chemistry, Physical
Wenle Feng, Feng Zhang, Kaiying Wei, Bin Zhai, Chunling Yu
Summary: Porous carbons with controlled morphologies and porous structures were synthesized by adjusting the solvent species. The resulting materials exhibited high specific capacitance and energy density in supercapacitors, along with good cycling stability.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Energy & Fuels
Samira Alinavaz, Maryam Ghiyasiyan-Arani, Elmuez A. Dawi, Masoud Salavati-Niasari
Summary: Hydrogen has received extensive attention in the field of new energy, leading to numerous studies on hydrogen production, storage, and use. Among these, mixed metal oxide materials with double layer hydroxides are primarily studied for their hydrogen storage capacity. Comparing the capacity of Ho3Fe5O12/Mg2Al(OH)(7) nanocomposites with different ratios to pristine LDH, it has been demonstrated that the 1:1 ratio of Ho3Fe5O12 to Mg2Al(OH)(7) in the nanocomposites significantly enhances the storage capacity (422 mAhg(-1)) compared to pristine LDH (213 mAhg(-1)).
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Environmental
Yuntao Liang, Yuxi Zeng, Xiaofeng Tang, Wu Xia, Biao Song, Fubing Yao, Yang Yang, Yashi Chen, Chuangxin Peng, Chengyun Zhou, Cui Lai
Summary: In this study, Cu and Cu(OH)(2) were loaded on Ni foam using a one-step hydrothermal method to create a cathode for electrochemical reduction of NO3-. The Cu(OH)(2)-Cu/NF electrode exhibited a 91.5% conversion of NO3--N in 90 min and maintained excellent electrochemical performance after 20 cycles. This study provides a novel approach for designing efficient, stable, and inexpensive NO3- reduction electrodes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
T. S. Ghadge, A. L. Jadhav, Y. M. Uplane, A. V. Thakur, S. V. Kamble, B. J. Lokhande
Summary: This study focused on the preparation of Cu(OH)(2)@Cu flexible thin film electrodes (FTFEs) via different routes and their comparative electrochemical analysis. The results showed that the electrodes prepared via aqueous route exhibited good electrochemical stability and the highest specific capacitance in 1M NaOH solution.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Chengjun Zou, Zhifeng Li, Chunxiang Wang, Jiabin Hong, Jun Chen, Shengwen Zhong
Summary: Ni/Ni(OH)(2) nanocomposites with different interlayer anions were successfully synthesized using a facile electrochemical deposition method. The effect of interlayer anions on the morphology and electrochemical performance was studied through materials characterization and electrochemical tests. The results showed that Cl- intercalated nanocomposites exhibited higher specific capacitance and better cycle performance compared to SO42- interlayer anions.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Aixian Shan, Xueai Teng, Yu Zhang, Pengfei Zhang, Yingying Xu, Chengrang Liu, Hao Li, Huanyu Ye, Rongming Wang
Summary: This study synthesizes Pt nanoparticles decorated on MoS2 nanosheets and demonstrates their enhanced electrocatalytic activity and stability through electronic structure modulation, resulting in lower overpotential and smaller Tafel slope.
Article
Chemistry, Multidisciplinary
Pengfei Zhang, Hongmei Qiu, Huicong Li, Jiangang He, Yingying Xu, Rongming Wang
Summary: This study investigates the microscopic mechanism of OER on the surface of Ni12P5 using computational and simulation methods. It reveals that the nonmetallic P atom serves as the active site, and the dissociation process occurs stepwise. The rate-determining step of OER on Ni12P5 is the formation of the OOH group, leading to the lowest overpotential and enhanced catalytic activity compared to other nickel phosphides. Furthermore, the charge of Ni and P sites has a linear relationship with the adsorption energy of OH and O, which can be utilized for optimizing OER catalysts.
Article
Multidisciplinary Sciences
Zhuang Yan, Xingxing Li, Yusen Li, Chuangcheng Jia, Na Xin, Peihui Li, Linan Meng, Miao Zhang, Long Chen, Jinlong Yang, Rongming Wang, Xuefeng Guo
Summary: In this study, we demonstrate two configurations of a graphene-porphyrin-graphene single-molecule junction (SMJ) driven by electric field and proton transfer. The transistor configuration shows exceptional field-effect performance with high on/off ratio and gate efficiency. The other configuration reveals controllable proton transfer and tautomerization switching. This work provides insights into constructing multifunctional molecular nanocircuits and understanding the intrinsic properties of matters at the molecular scale.
Article
Chemistry, Physical
Huanyu Ye, Feng Yang, Yinghui Sun, Rongming Wang
Summary: This study visually recorded the complete evolution process of solid-phase chloroplatinic acid during the electron beam irradiation triggered reduction and nucleation of platinum nanocrystals using aberration-corrected environmental transmission electron microscopy. The research found that there is a critical size of approximately 2.0 nm, representing the start of crystallization, during the formation of nanocrystals.
Correction
Chemistry, Physical
Yuchen Zhu, Yinghui Sun, Hongzhou Zhang, Yang He, Wei Liu, Rongming Wang
Article
Chemistry, Multidisciplinary
Tianyu Xia, Kai Zhao, Youqi Zhu, Xiaoyan Bai, Han Gao, Ziyu Wang, Yue Gong, Menglin Feng, Shunfang Li, Qiang Zheng, Shouguo Wang, Rongming Wang, Haizhong Guo
Summary: Mixed-dimensional Pt-Ni alloy polyhedral nanochains were fabricated to address the unbalanced relationship between activity and stability in Pt nanocatalysts. These nanochains exhibited significantly enhanced mass activity for methanol oxidation reaction and improved stability against CO poisoning. Additionally, they achieved a higher half-wave potential for oxygen reduction reaction.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Haofei Zhao, Yuchen Zhu, Huanyu Ye, Yang He, Hao Li, Yifei Sun, Feng Yang, Rongming Wang
Summary: Nanocrystals play a crucial role in material sciences and industry. Designing nanocrystals with desired structures and properties is a major challenge that requires a deep understanding of atomic-scale dynamics. In situ transmission electron microscopy (TEM), especially environmental TEM, has provided valuable insights into nanocrystals. This comprehensive review highlights the progress in the understanding of nanocrystal dynamics, including nucleation and growth, structure evolution, and dynamics in reaction conditions.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yadi Cao, Yinghui Sun, Huanhuan Yang, Liang Zhou, Qianming Huang, Jiajie Qi, Pengfei Guan, Kaihui Liu, Rongming Wang
Summary: In this study, the directional migration and structural evolution of Au nanoparticles on anisotropic ReS2 were investigated using aberration-corrected transmission electron microscopy. It was found that Au nanoparticles with diameters below 3 nm preferentially migrate along the b-axis direction. Density functional theory calculations revealed that the lower diffusion energy barrier enables the directional migration. The coalescence kinetics of Au nanoparticles were quantitatively described using the relationship r(2) = Kt. This work provides an atomic-resolved dynamic analysis method for studying the interfacial structural evolution of metal/2D materials, which is crucial for understanding the stability of nanodevices based on mixed-dimensional nanomaterials.
Article
Materials Science, Multidisciplinary
Yu Zhang, Xue-Ai Teng, Ze-Qun Ma, Rong-Ming Wang, Woon-Ming Lau, Ai-Xian Shan
Summary: A novel synthesis strategy for FeOOH hollow tubes with one-dimensional and hollow features was proposed and successfully implemented. The FeOOH scaly hollow tubes exhibited outstanding catalytic activity, low Tafel slope, and robust stability as oxygen evolution reaction catalysts. This work enhances the feasibility to broaden the design ideas of transition metal-based catalysts.
Article
Chemistry, Multidisciplinary
Xiaoyan Bai, Tianqi Cao, Tianyu Xia, Chenxiao Wu, Menglin Feng, Xinru Li, Ziqing Mei, Han Gao, Dongyu Huo, Xiaoyan Ren, Shunfang Li, Haizhong Guo, Rongming Wang
Summary: Constructing a heterogeneous interface using different components is an effective way to achieve the bifunctionality of nanocatalysts, and synergistic interactions between multiple interfaces can optimize the performance of single-interface nanocatalysts. A multiple-interfaced sandwich-like nanostructure MoS2/NiSe2/reduced graphene oxide (rGO) is prepared, showing excellent catalytic performance in water splitting reactions. Assembled into a modified two-electrode system, the nanostructures exhibit an overpotential even exceeding that of noble metal nanocatalysts.
Article
Chemistry, Physical
Xiaodan Wang, Yao Lu, Rui Li, Dongsheng Ren, Xiaoyue Wang, Chunxue Liu, Rongming Wang, Xiang Hu, Zhenhai Wen, Xiangming He
Summary: This study reports a superlattice Zn3V2O7-C as a conversion-type cathode material for AZIBs, which exhibits high capacity and long-term stability.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yuan Ma, Yongqing Chen, Tao Guo, Hong-Hui Wu, Rongming Wang, Yang He, Luning Wang, Lijie Qiao
Summary: In this study, the atomic shuffling mechanism during twinning nucleation in rhenium nanocrystals was analyzed using in situ high-resolution transmission electron microscopy. It was found that the double-layered prismatic planes initially shuffle into single-layered BCT planes, and subsequently adjacent BCT planes shuffle in opposite directions to form the basal planes of the twin embryo. Molecular dynamic simulations further confirmed this shuffling mechanism. These findings provide direct evidence of shuffle-dominated twinning nucleation with atomic details, which may contribute to better control of this critical twinning mode in HCP metals.
Article
Chemistry, Multidisciplinary
Shiyu Zhu, Yun Liu, Yue Gong, Yuting Sun, Kang Chen, Yuan Liu, Weidi Liu, Tianyu Xia, Qiang Zheng, Han Gao, Haizhong Guo, Rongming Wang
Summary: PtCo@PtIr nanoparticles with a quasi-octahedral PtCo nanocrystal core and an ultrathin PtIr atomic layer shell are successfully designed and fabricated. With their unique geometric and core-shell features, the PtCo@PtIr nanoparticles exhibit significantly higher mass and specific activities as an ORR catalyst compared to a commercial Pt/C catalyst, and show extraordinary durability. Furthermore, when evaluated with the ORR-OER dual reaction, the PtCo@PtIr nanoparticles demonstrate a small ORR-OER overpotential gap, indicating their great potential as a bifunctional electrocatalyst for fuel cell applications.
Article
Chemistry, Physical
Delin Kong, Feng Tian, Yingying Xu, Shaoqun Zhu, Zetong Yu, Lefeng Xiong, Peipei Li, Huiyun Wei, Xinhe Zheng, Mingzeng Peng
Summary: In addition to three-dimensional structures, polar semiconductor heterostructures are developing towards two-dimensional scale with mix-dimensional integration for novel properties and multifunctional applications. In this study, 2D Janus MoSSe and 3D wurtzite GaN polar semiconductors were stacked to form MoSSe/GaN polar heterostructures by polarity configurations. The polarity reversal of GaN in contact with Janus MoSSe and strain modulation were utilized to enhance the structural stability and tune the electronic energy band profiles of the heterostructures.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Abu Talha Aqueel Ahmed, Sankar Sekar, Shubhangi S. Khadtare, Nurul Taufiqu Rochman, Bathula Chinna, Abu Saad Ansari
Summary: In this study, MnCo2S4 nanosheet catalyst was successfully synthesized and found to exhibit superior performance in hydrogen evolution. Compared to MnCo2S4, MnCo2S4 showed low overpotentials, moderate Tafel slope, and excellent sustainability. The outstanding performance can be attributed to the increased number of electrochemically active sites and enhanced electronic conductivity on the catalyst surface.
Article
Chemistry, Multidisciplinary
Victor V. Maltsev, Elena A. Volkova, Elizaveta V. Koporulina, Diana D. Mitina, Vladimir L. Kosorukov, Anna I. Jiliaeva, Daniil A. Naprasnikov, Konstantin N. Gorbachenya, Viktor E. Kisel
Summary: The phase relationships, crystal properties and luminescence kinetics of two complex systems were studied, including unit cell parameters, segregation coefficients of impurities, and lifetimes of energy levels.
Article
Chemistry, Multidisciplinary
Xiaoman Zhang, Wangwang Xu, W. J. Meng, Andrew C. Meng
Summary: This study successfully grew high-quality single crystal AlScN nanowires through ultra-high vacuum reactive sputtering technique and characterized their structure and properties. The nanowires exhibit significantly reduced mosaic spread and predominantly single ferroelectric domains, as well as a high piezoelectric constant.
Article
Chemistry, Multidisciplinary
Tom E. de Vries, Elias Vlieg, Rene de Gelder
Summary: Networks are important for describing relationships between people, roads between cities, reactions between chemicals, and other interactions. Bipartiteness, dividing the network into two groups, can facilitate the study of the network's structure. We have developed an algorithm that can find a near-optimal bipartisation within a reasonable time frame and used it to uncover the hidden structure of the CSD cocrystal network.
Article
Chemistry, Multidisciplinary
Chuchu Han, Jing Yang, Xin Zhang, Aisen Li, Jiang Peng
Summary: An elastic crystal based on a photo-reactive acylhydrazone derivative is reported, which exhibits reversible bending behavior under UV irradiation and heating. The crystal undergoes reversible E<->Z isomerization under light and heating conditions. The crystal demonstrates excellent elastic properties and the bending can be controlled to control the output direction of red light.
Article
Chemistry, Multidisciplinary
Lingfeng Zhang, Yu Wang, Yefeng Wang, Shuai Liu, Na Zhang, Mingmin Yang, Haixia Ma, Zhaoqi Guo
Summary: This study designs and synthesizes a series of high-energy salts compounds without heavy metal ions and azide groups. The molecular structures and stability of the compounds are confirmed through single-crystal X-ray diffraction and intermolecular interaction analysis. Furthermore, the thermal stability, energetic properties, and electrical initiation properties of the compounds are investigated, suggesting their potential as primary explosives.
