Article
Chemistry, Physical
Usharani Panda, Dilip Kumar Mishra, Sushanta Kumar Kamilla, V. Rama Rao Medicherla, Vasant Sathe, Jyoshnarani Mohapatra, Pravanjan Mallick
Summary: Ni-doped SnO2 powder samples were synthesized and characterized by various techniques, showing nanocrystalline rutile tetragonal structure, decreased bandgap with increasing Ni concentration, and confirmation of room temperature ferromagnetism. The incorporation of Ni ions into the lattice of pure SnO2 was confirmed through shifts in vibrational peaks observed in FTIR spectra.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Asmaa Al-Rasheedi, N. H. Alonizan, Akhlur Rahman Ansari, A. M. Abdel-Daiem, M. S. Aida
Summary: In this study, ZnO nanorods were successfully grown on glass substrate using the hydrothermal method, and the effect of zinc precursor salt concentration on nanorod properties was investigated. XRD, SEM, UV-visible optical transmittance and PL were used to analyze the structure and properties of the nanorods. The results showed that increasing the salt solution concentration led to the formation of ZnO nanorods with larger diameter and denser array.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Yalambaku Rajesh, Md Ahamad Mohiddon, M. Ghanashyam Krishna
Summary: Shape control of ZnO and Au nanostructures on thin films can be achieved by microwave assisted hydrothermal synthesis with different precursors. Zinc nitrate precursor leads to rice grain structures, while zinc acetate precursor results in hexagonal shapes.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Vikas Kumar, Rahul Madan, Bajinder Singh, Devendra Mohan
Summary: Pristine zinc oxide (ZnO) and graphene oxide (GO)-based GO/ZnO nanocomposites were prepared for room temperature acetone gas sensors. Structural analysis showed that increasing wt% of GO did not affect the crystal structure of ZnO. The nanocomposites exhibited a hexagonal plate-like structure, with different thicknesses depending on the wt% of GO. Raman spectroscopy confirmed the presence of fundamental bands of ZnO and GO in the nanocomposites.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Environmental
Rudzani Ratshiedana, Olayemi Jola Fakayode, Ajay Kumar Mishra, Alex Tawanda Kuvarega
Summary: The study focuses on the impact of silver ion doping on the photocatalytic activity of titanium dioxide for the degradation of tartrazine. Results show that optimal degradation of tartrazine can be achieved with a certain amount of doping, suggesting potential applications for removing similar organic pollutants from water.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Chemistry, Analytical
G. Mineo, K. Moulaee, G. Neri, S. Mirabella, E. Bruno
Summary: An extended experimental investigation and modeling of the interaction between WO3 and H2 were conducted, revealing two microscopic processes leading to gas detection, with quantified kinetic barriers. The chemo-resistive effect of H2 sensing by WO3 was explained through these processes, laying the foundation for the development of fast, sensitive, and low-temperature operating H2 sensors based on WO3.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Krishna Hari Sharma, Da-Ren Hang, Satish Bolloju, Jyh-Tsung Lee, Hui-Fen Wu, Sk Emdadul Islam, Mitch M. C. Chou, Chi-Te Liang, Rupesh Rohan Srivastava
Summary: A novel hierarchical MoS2/MoO3 nanocomposite with enhanced electrochemical and photocatalytic performance was reported. The growth of MoS2 onto α-MoO3 surface created a unique 2D/2D hierarchical structure, improving the electrical conductivity of the composite electrode and capacitance retention in a symmetric supercapacitor assembly. The remarkably enhanced visible-light-driven photocatalytic performance can be attributed to activated inert basal plane, facilitated interfacial charge transfer, and peculiar ultrathin nanosheet framework.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Physics, Condensed Matter
M. C. Manaka, B. M. Mothudi, M. S. Dhlamini
Summary: This paper reports on the thermoluminescence properties of an undoped SrSiO3/SiO2 phosphor synthesized by hydrothermal method. The results demonstrate its potential as a dosimetric material with a linear dose response in a wide range.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Chemistry, Physical
Marfa Egorova, Aleksandra Tomskaya, Svetlana Afanasyevna Smagulova
Summary: The optical and structural properties of carbon dots (CDs) synthesized using a hydrothermal method were investigated. Different precursors such as citric acid (CA), glucose, and birch bark soot were used to prepare CDs. The CDs were found to be disc-shaped nanoparticles with dimensions varying with different precursors. The CDs exhibited strong absorption in the ultraviolet region and bright luminescence in the blue-green region of the spectrum, with the luminescence depending on the synthesis time and type of precursors. The presence of functional groups in the CDs was found to be responsible for the observed radiative transitions.
Article
Materials Science, Multidisciplinary
Khurshaid Ahmad Malik, Javied Hamid Malik, Aadil Ahmad Bhat, Insaaf Assadullah, Radha Tomar
Summary: The Gd-doped ZnO nanostructures synthesized through the hydrothermal route exhibit good optical properties, enhanced photoluminescence activity, and can be applied in various fields such as sensors, UV-Lasers, phosphors, LEDs, and luminescent biolabels. The enhancement in luminescent property is attributed to an increase in crystallinity, complex defects, and electron-hole pair recombination rate.
Article
Chemistry, Multidisciplinary
Chadrasekhar Loka, Kee-Sun Lee
Summary: Ag-Ag2O-ZnO nanocomposite with localized surface plasmon resonance (LSPR) and p-n heterojunction structure was synthesized by hydrothermal process, which effectively improved the photocatalytic efficiency and suppressed the recombination of photogenerated electron-hole pairs. The nanocomposite exhibited excellent photocatalytic activity and achieved high degradation efficiency for different dyes under visible-light irradiation.
Article
Engineering, Environmental
Hind Alshaikh, Ahmed Shawky, L. Selva Roselin
Summary: This study demonstrates the photocatalytic reduction of mercury (II) ions (Hg2+) using CuAl2O4-decorated g-C3N4 heterojunction photocatalyst. The 3.0% CuAl2O4/g-C3N4 showed superior photocatalytic activity compared to pure g-C3N4 and CuAl2O4 under visible light irradiation. The enhanced performance is attributed to confined bandgap and suppression of photogenerated carrier recombination in this novel heterojunction design.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Chih-Chiang Wang, Chia-Lun Lu, Fuh-Sheng Shieu, Han C. Shih
Summary: Al-free and Al-doped V2O5 nanostructures were synthesized using a CVD process on Si(100), revealing that Al doping affected the crystallinity of V2O5 and decreased the photoluminescence intensity. The study showed that Al-doped V2O5 nanostructures have potential applications in smart windows and as electrode materials in Li-ion batteries.
Article
Physics, Applied
Kejun Wu, Pankaj Koinkar, Akihiro Furube
Summary: By combining transition metal dichalcogenide WS2 and gold nanoparticles with titanium dioxide, the WS2/TiO2/Au composite showed enhanced photocatalytic performance under visible light, making it suitable for future photocatalytic applications.
MODERN PHYSICS LETTERS B
(2022)
Article
Engineering, Electrical & Electronic
Lakshmi Kumari, Asit Kumar Kar
Summary: A series of ZnO nanomaterials were synthesized using chemical co-precipitation method with fixed proportions of precursors and varied solvents. The choice of solvent significantly influenced the morphology, absorption and photoluminescence properties of the nanomaterials, with alcoholic solutions showing more absorption in the visible range and particularly intense blue emission. The mechanism of solvent-mediated defect creation and emission in ZnO holds promise for future QD LED applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Bingyuan Ke, Xinghui Wang, Shoulin Cheng, Wangyang Li, Renming Deng, Congcong Zhang, Jie Lin, Qingshui Xie, Dong-Liang Peng
Summary: This study demonstrates an in situ plasma pretreatment method for achieving ultrahigh-power and stable thin-film electrodes using sputtered iron oxysulfide (FeOxSy) thin films. The pretreated FeOxSy thin films exhibit a remarkably high power density and stable cycling performance, thanks to their high structural integrity, perfect electrochemical reversibility, and near-surface charge exchanges.
SCIENCE CHINA-MATERIALS
(2023)
Article
Engineering, Environmental
Yonghui Xie, Juan Ao, Li Zhang, Yeqing Shao, Hong Zhang, Shuying Cheng, Xinghui Wang
Summary: This paper proposes a strategy for designing multi-functional bilayer structures, which uses a graphene nanoflowers layer to encapsulate a hybrid network skeleton composed of metallic Co and carbon nanotubes as a flexible sulfur cathode host. The developed host can chemically trap, electrochemically catalyze, physically block, and store lithium polysulfides. The experimental results demonstrate that the designed Co/CNT@GF-S exhibits superior performance in terms of high energy density and cycling stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Kangning Wang, Mengran Qin, Chuantao Wang, Ting Yan, Yanzhong Zhen, Xiaolei Sun, Jianwei Wang, Feng Fu
Summary: The construction of composite materials is an effective strategy to solve the problems of poor conductivity, manganese dissolution, and volume expansion of manganese-based materials. Herein, a CeO2/MnOx@C hollow composite cathode derived from the self-assembly of Ce-Mn-MOFs was synthesized. The 1% CeO2/MnOx@C composite cathode exhibits a high reversible capacity and excellent cycling stability, with a remarkable reversible specific capacity of 130 mAh/g at a current density of 500 mA g(-1), 6.5 times more than the pure MnOx (20 mAh/g), and a capacity retention of 99.5% after 800 cycles. This study provides a new strategy for designing rare-earth composite electrodes to improve electrochemical performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xiaolei Sun, Yao Chen, Yang Li, Feng Luo
Summary: In this study, oxygen-doped hierarchically porous carbons with partially graphitic nanolayers were synthesized from pyrolyzed Na-alginate biopolymers. The as-prepared Alg-C electrodes showed outstanding electrochemical features as lithium storage anodes, including high-rate capability and extended cycling lifetimes over 5000 cycles.
Article
Nanoscience & Nanotechnology
Yumei Zhou, Wangyang Li, Yonghui Xie, Liying Deng, Bingyuan Ke, Yijia Jian, Shuying Cheng, Baihua Qu, Xinghui Wang
Summary: A quasi-solid-state planar zinc-ion cell was developed with a vertical graphene film as an effective conductive modification layer, exhibiting advantages such as uniform zinc deposition/stripping, accelerated charge transport, and enhanced adhesion between active materials and current collectors. It showed high energy and power density as well as good cycling stability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Liying Deng, Wangyang Li, Jie Sun, Xinghui Wang, Qing Zhang, Chang Lin, Kui Pan, Qun Yan, Shuying Cheng
Summary: This study found that temperature is the key factor for fluorophlogopite mica to promote the growth of large-sized 2D materials as an alkali metal ion source. Variable temperature experiments revealed that fluorophlogopite mica can successfully incorporate alkali metal ions into the growth of large-sized 2D materials at high temperatures, resulting in highly crystalline MoO2 with a larger size compared to those without fluorophlogopite mica.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Yunda Lai, Tengjun Yang, Yang Yang, Wangyang Li, Yonghui Xie, Shuying Cheng, Li Qiao, Xinghui Wang
Summary: A Si@CNFs interlayer with three-dimensional porous and conductive structure is used to improve the cycling stability and energy density of lithium metal batteries by regulating lithium deposition behaviors and buffering volume changes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Xiaolei Sun, Wenhe Xie, Feng Luo
Summary: Nickel oxide (NiO) is a promising anode material for rechargeable lithium-ion batteries. A rational design for the fabrication of multilayered NiO submicron flakes using a selective chemical etching strategy followed by a calcination treatment is demonstrated. The multilayered NiO submicron flakes exhibit excellent cycling stability and rate capability when serving as lithium storage anodes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Biochemistry & Molecular Biology
Xiaolei Sun, Feng Luo
Summary: High-level N/O heteroatoms-doped carbonaceous flowers with hierarchical pore architecture were synthesized, which provided effective transport pathways for electrons/ions, leading to extraordinary storage properties in sodium-ion batteries.
Article
Nanoscience & Nanotechnology
Wangyang Li, Leimeng Sun, Weifan Cai, Xinghui Wang, Qing Zhang
Summary: A multilayer vertically aligned carbon nanotubes supported Si film (VACNTs@Si) with ferroconcrete-like sructures is developed through a layer-by-layer technique, enhancing both areal and volumetric capacities of Si-based anodes. The VACNTs frameworks facilitate electron transport and stabilize the anode structure, while the Si cladding layer provides a high capacity. This ferroconcrete-like structural design offers a promising strategy for fabricating electrodes with ultra-high areal and volumetric capacities.
SCRIPTA MATERIALIA
(2023)
Article
Nanoscience & Nanotechnology
Renming Deng, Bingyuan Ke, Yonghui Xie, Shoulin Cheng, Congcong Zhang, Hong Zhang, Bingan Lu, Xinghui Wang
Summary: Thin-film all-solid-state lithium-sulfur (TFLSBs) batteries were successfully fabricated using vertical graphene nanosheets-Li2S (VGsLi(2)S) composite thin-film cathode, lithium-phosphorous-oxynitride (LiPON) thin-film solid electrolyte, and Li metal anode. The solid-state Li-S system with an unlimited Li reservoir fundamentally eliminated the shuttle effect and maintained a stable VGs-Li2S/LiPON interface, demonstrating excellent long-term cycling stability and high temperature tolerance. This study presents a new development strategy for secure and high-performance rechargeable all-solid-state thin-film batteries.
NANO-MICRO LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Juan Ao, Yonghui Xie, Yunda Lai, Ming Yang, Jing Xu, Fan Wu, Shuying Cheng, Xinghui Wang
Summary: In this study, a hierarchically porous membrane consisting of CoSe2 nanoparticle-decorated carbon nanofibers containing carbon nanotubes (CoSe2@CNF/CNT) is constructed as a self-supported sulfur host for Li-S batteries. The modified CoSe2 nanoparticles serve as chemical trappers and electrocatalysts, enhancing the redox kinetics to inhibit the shuttle effect. This work offers a feasible approach to designing multi-functional sulfur hosts for high-energy-density Li-S batteries.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Physical
Xiaolei Sun, Meiyi Jing, Hong Dong, Wenhe Xie, Feng Luo
Summary: Transition metal oxides can enhance the gravimetric capacity of lithium-ion batteries. In this study, CuO-ZnO@Al2O3 submicroflakes were prepared and showed superior capacity, cycling stability, and rate capability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Biochemistry & Molecular Biology
Wenhe Xie, Congcong Liu, Chen Hu, Yuanxiao Ma, Xuefeng Li, Qian Wang, Zhe An, Shenghong Liu, Haibin Sun, Xiaolei Sun
Summary: In this study, a composite electrode of amorphous GeO2 and carbon was designed, which exhibited highly reversible alloying and conversion processes. The uniform distribution of highly amorphous GeO2 particles in the carbon nanofiber framework allowed for improved conductivity and buffering of volume changes, preventing material agglomeration. The composite electrode showed promising reversible capacity and potential for high-performance lithium-ion batteries.
Article
Chemistry, Multidisciplinary
Jing Xu, Juan Ao, Yonghui Xie, Yumei Zhou, Xinghui Wang
Summary: Beaded nanofibers consisting of carbon and CoSe2 nanoparticles were prepared and showed improved electrochemical performance in Li-S batteries, thanks to their physical adsorption and chemical catalysis effects. The CoSe2/C BNFs-S cathode demonstrated high reversible discharge specific capacity and excellent cycle stability.
