Article
Chemistry, Physical
Khushboo Punia, Ganesh Lal, Saurabh Dalela, Satya Narain Dolia, Parvez Ahmad Alvi, Shiv K. Barbar, Kunal B. Modi, Sudhish Kumar
Summary: The study reveals the impact of Gd substitution on the structural, optical, photoluminescence, and magnetic properties of Zn1-xGdxO nanocrystals, including crystallinity, band gap energy, emission characteristics, and magnetization behavior. Gd substitution results in a reduction in the average crystallite size of Zn1-xGdxO nanocrystals and confirms the coexistence of paramagnetic and weak ferromagnetic ordering in the presence of Gd.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
N. H. Alonizan
Summary: Pure and Al-doped ZnO nanoparticles were synthesized using hydrothermal technique. The structural and phase analysis showed that Al doping increased the crystallite size and caused compressive stress formation in the material network. Other studies investigated the impact of different Al doping ratios on powder morphology, optical bandgap, and electronic defects localized in the material band-gap.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Inorganic & Nuclear
F. I. H. Rhouma, Mohamed Amara Gdaiem, F. Belkhiria, M. Daoudi, A. Bchetnia, R. Chtourou
Summary: The effect of Bi substitution on the structural and optical properties of Pr0.01Zn0.97O materials was investigated. Bi incorporation increased the size and band gap energy of nanocrystals and resulted in interesting evolution of photoluminescence, demonstrating the potential application of this material in optoelectronics devices.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
S. S. Ghosh, A. Sil
Summary: 5 and 7.5 at% Mn doped ZnO samples were prepared by microwave treatment following thermal curing. The XRD phase analysis reveals the presence of Mn in different forms and successful bonding with ZnO to form new compounds. Microwave treatment induces structural evolution of the samples, reduces the photoluminescence peak intensity, and increases the saturation magnetisation.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Khushboo Punia, Ganesh Lal, Shiv K. Barbar, Satya Narain Dolia, Parvez Ahmad Alvi, Saurabh Dalela, Sudhish Kumar
Summary: This article discusses the cooperative magnetism induced by oxygen vacancies and defects in ZnO nanocrystals of different sizes, showing that smaller nanocrystals exhibit enhanced ferromagnetic behavior. The presence of oxygen vacancies and valence fluctuations also play a crucial role in mediating the magnetism of the ZnO nanocrystals.
Article
Crystallography
Nada Al Taisan, Shalendra Kumar, Adil Alshoaibi
Summary: In this paper, the synthesis and characterization of pure and TM (Mn, Cr) doped BiFeO3 nanoparticles using the sol-gel technique were reported. The nanoparticle structure presented a rhombohedral distorted perovskite structure with R3c space group, along with a minor phase of Bi2Fe4O9. TM doping resulted in a decrease in lattice parameters and particle size. The bandgap was found to decrease with TM doping, while the dielectric constant and ac conductivity increased.
Article
Materials Science, Ceramics
Smita Dey, Asit Kumar Kar
Summary: The study investigates the structural and optical properties of polypyrrole-ZnO composites with different amounts of ZnO, finding that the addition of ZnO slightly affects the conjugation of the polymer chain and causes a blue shift in the pi-pi* transition. The research uses a FRET model to theoretically predict the energy transfer efficiency, Forster radius, and separation between donor and acceptor, showing that tuning the ZnO content can adjust the emission properties of the PPy-ZnO composite.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Lutfi Arda, Ozgul Karatas, Mehmet Can Alphan, Ersin Ozugurlu
Summary: Zn0.95-xMg0.05CoxO nanoparticles with varying cobalt concentrations were synthesized using the sol-gel technique. The nanoparticles exhibited a single phase structure and their surface morphology and emission spectra were influenced by synthesis conditions and doping elements. The effect of cobalt concentration on line widths and g-factor of ESR spectra was investigated. Furthermore, it was found that Mg/Co co-doped ZnO nanoparticles exhibited room temperature ferromagnetism, making them potential materials for spin-based technologies.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
R. Pena-Garcia, Y. Guerra, S. Castro-Lopes, Y. M. Camejo, Joao M. Soares, A. Franco, E. Padron-Hernandez, M. Cabrera-Baez
Summary: This study analyzed the effects of Sr and Ni doping on the morphological, electronic, and magnetic properties of ZnO nanoparticles, revealing differences in particle shapes, lattice structure changes, and magnetic contributions.
CERAMICS INTERNATIONAL
(2021)
Article
Optics
Vijay Singh, Rajamouli Boddula, G. N. Nikhare, Ji Bong Joo
Summary: The study successfully synthesized orange-red emitting Eu3+ doped CaAl4O7 phosphors with desired phase and good photoluminescence properties. The phosphors exhibit sharp emission peaks and high color purity in the orange-red region, making them suitable for applications in the field of luminescent materials.
Article
Materials Science, Multidisciplinary
Huying Yan, Jian Xue, Wenjing Chen, Jialing Tang, Ling Zhong, Tingdong Zhou, Xinwei Zhao
Summary: This paper investigates the relationship between the origin of magnetism in Zn1-xCoxO nanoparticles and oxygen vacancy or carrier concentration, revealing that a higher carrier concentration is critical to promoting ferromagnetism. The magnetic properties of Co-doped ZnO may originate from oxygen vacancies or carriers.
Article
Chemistry, Physical
H. S. Lokesha, A. R. E. Prinsloo, P. Mohanty, C. J. Sheppard
Summary: The effects of Cr ion doping on the structure, optical and magnetic properties of ZnO were investigated. Zn1-xCrxO (0 ≤ x ≤ 0.05) samples were prepared using the solution combustion method. X-ray diffraction results showed that all samples had a hexagonal structure. Transmission electron microscopy (TEM) revealed the particle size of Zn1-xCrxO with x = 0, 0.03 and 0.05 to be 48.2 ± 2.1 nm, 29.4 ± 2.2 nm, and 25.3 ± 2.1 nm, respectively. The band-gap slightly decreased from 3.308 ± 0.003 eV to 3.291 ± 0.003 eV with an increase in Cr content. Room temperature ferromagnetism (RTFM) was observed in ZnO and Cr-doped ZnO through magnetization measurements. The origin of RTFM was attributed to negatively charged zinc vacancies (VZn) and singly ionized oxygen vacancies (Vo+). The replacement of Zn2+ sites by Cr3+ ions in hexagonal ZnO was confirmed by electron paramagnetic resonance (EPR) results. The observed long-range ferromagnetic ordering was explained by the bound magnetic polaron (BMP) mechanism.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
E. Ozugurlu
Summary: The sol-gel method was used to prepare Zn1-xCdxO nanoparticles with various Cd concentrations, and the structural and optical properties were analyzed experimentally and theoretically. The study showed that the addition of Cd alters the crystal structure of ZnO and significantly affects the band-gap and optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
C. Gomez-Polo, S. Larumbe, A. Gil, D. Munoz, L. Rodriguez Fernandez, L. Fernandez Barquin, A. Garcia-Prieto, M. L. Fdez-Gubieda, A. Muela
Summary: The study investigates the effects of Cr and N doping on the properties of TiO2 anatase nanoparticles, including adsorption capacity, photocatalytic performance, and antibacterial response. Doping with Cr and Cr/N enhances adsorption capacity and photocatalytic performance, with Cr-TiO2 nanoparticles exhibiting antibacterial activity under visible light. The differences in electrostatic charge and nanoparticle dispersion are suggested as the main reasons for the varied antibacterial response among the doped nanoparticles.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Muhammad Ramzan, Muhammad Abdul Moiz, Abdullah Mumtaz, Muhammad Babar Khalid, Syed Wilayat Husain
Summary: Based on first-principle calculations and experimental synthesis, Cr-doped ZnO is found to be the most suitable material with enhanced photocatalytic activity, supported by band gap reduction and red shift observed in both computational and experimental results.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)