Article
Materials Science, Multidisciplinary
Hao Li, Jiawei Wang, Ziwei You, Yuxi Yu, Pai Li, Liwei Xiong, Yunbin He
Summary: Nb-doped VO2 films were synthesized to enhance thermal sensing abilities, with the thermal hysteresis and resistivity decreasing while the transition temperature range widened as doping content increased. The strategy of Nb doping in VO2 showed promising results for thermal-sensing applications.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Chemistry, Inorganic & Nuclear
Habib Chenaina, Charfeddine Messaadi, Jalila Jalali, Hatem Ezzaouia
Summary: This study focuses on sol-gel derived SnO2-TiO2 thin films deposited on silicon wafer type Si (100) substrate using spin coating technique, followed by heat treatments at four different temperatures. XRD characterization reveals the formation of nano-crystalline phase at 400 degrees C and further crystallization with increasing annealing temperature. Optical and dielectric properties analysis demonstrates universal many body response over a broad frequency range, presenting variations in structure and performance of the films.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Materials Science, Ceramics
V Ganesh, Yugandhar Bitla, L. Haritha, Mohd Shkir, S. AlFaify
Summary: Cadmium oxide (CdO) thin films doped with different concentrations of yttrium (Y) were prepared using the spin coating technique. The study investigated the impact of Y doping on the structural, morphological, linear, and nonlinear optical properties of the CdO thin films. Results showed an increase in grain size with higher Y doping, and a significant suppression of both linear and nonlinear optical properties.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
D. Ait Elhaj, A. El Kissani, H. Ait Dads, H. Chaib, K. Elassali, A. Outzourhit
Summary: Copper iron tin sulfide (CFTS) thin films were prepared using a sol-gel spin-coating method without a sulfurization step. The optimal synthesis condition was found to be at 400 degrees Celsius for 40 minutes, resulting in pure phase thin films with good physical properties suitable for solar cell applications.
Article
Materials Science, Ceramics
Yan Liu, Zhibiao Ma, Yangyang Wang, Bingdong Yao, Jingxian He, Jing Li, Fengqing Zhang
Summary: In this study, a BTBF composite film was prepared using the sol-gel method on a FTO/glass substrate, and its structure, oxygen vacancy concentration, electrical properties, and aging were tested and analyzed at different annealing temperatures. The results showed that the sample annealed at 615°C exhibited the best crystallinity, ferroelectricity, and leakage current characteristics.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Aziz Nfissi, Mounir Belhajji, Abdelhak Chouiekh, Abdelilah Rjeb, Abdelfettah Barhdadi, Salaheddine Sayouri, Yahya Ababou
Summary: Cadmium oxide (CdO) thin films were successfully deposited on glass substrates by the sol-gel spin coating method. The effects of the annealing temperature and Zirconium (Zr) doping on the physical properties of the CdO thin films were investigated. It was found that 550 °C is the optimal annealing temperature with a good crystallinity for the CdO thin films. Then, by using this temperature, different Zr doping concentrations (0, 1, 3, 5 and 7%) were prepared at the same experimental conditions. The X-ray diffraction (XRD) patterns of all the as-prepared thin films showed a polycrystalline nature with a face centered cubic (FCC) structure and that Zr incorporated the sites of Cadmium (Cd) up to 3% concentration, while the excess Zr doping (x > 3%) aggregated at the grain boundaries of the CdO lattice. Scanning electron microscopy (SEM) analysis revealed homogeneous and dense grains distribution with a film thickness of 30 μm. The optical study showed an increase in optical transmittance of CdO with Zr doping up to 3% and then a decrease onwards within the same wavelength region. The optical band gap values increased from 2.41 to 2.67 eV with increasing Zr doping which was explained by the Burstein-Moss effect. The minimum electrical resistivity (5.32 x 10(-1) Ω·cm) was obtained for the film coated with 3% Zr using the four-probe method.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Haojie Qu, Yuxian Guo, Donghui Zhang, Bai Sun, Linli Yan
Summary: In this study, vanadium dioxide thin films were fabricated on Al2O3 substrates by sol-gel method and subsequent annealing process. The effects of annealing temperature on the structure, chemical state, surface morphology and electrical properties of the films were studied. The results showed that the films exhibited good phase transition property as the annealing temperature increased.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
M. F. Hasaneen, M. S. Shalaby, N. M. Yousif, A. K. Diab, E. F. El Agammy
Summary: Evenly Cr-doped CdO thin films were prepared with different percentages by the sol-gel method. The crystal structures were polycrystalline and the surface roughness increased with increasing Cr ratio. The optical band gap increased and Urbach energy decreased with increasing Cr ratio. The electrical resistivity and sheet resistance also decreased with increasing Cr ratio.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Engineering, Environmental
Do-Kyung Kim, Kyeong-Ho Seo, Dae-Hyeon Kwon, Sang-Hwa Jeon, Yu-Jin Hwang, Ziyuan Wang, Jaehoon Park, Sin-Hyung Lee, Jaewon Jang, In Man Kang, Xue Zhang, Jin-Hyuk Bae
Summary: A sustainable water etchant-based photopatterning method is proposed to achieve simultaneous oxide film patterning and minimize trap states. This method can fabricate high-performance aluminum oxide capacitors and bias-stable indium oxide thin-film transistors.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Raphael D. C. Balboni, Camila M. Cholant, Luana U. Kruger, Elton A. Moura, Guilherme K. Maron, Wladimir H. Flores, André Gundel, Darci A. Gatto, Agnieszka Pawlicka, Cesar A. O. Avellaneda, Robson Andreazza
Summary: Thin films of cerium dioxide and cerium dioxide doped with vanadium pentoxide were prepared as smart materials using a sol-gel route and spin coating deposition. Weathering processes and temperature effects were studied, showing that doping reduced degradation, increased resistance of the film with temperature, and enhanced charge insertion capacity at higher temperatures.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Materials Science, Multidisciplinary
K. Meziane, A. El Hamidi, E. Elmahboub, S. Diliberto, A. El Hichou, A. Almaggoussi, N. Stein
Summary: In this study, zinc oxide thin films containing lithium were prepared using different lithium salt precursors, with films prepared using lithium nitrates showing the highest crystallographic quality and best optical and electrical properties. All ZnO films exhibited good transparency with an average transmission around 85% in the visible range.
Article
Materials Science, Ceramics
Teldja Boucherka, Mariem Touati, Azzeddine Berbadj, Noureddine Brihi
Summary: Highly transparent and conductive thin films of pure and aluminum doped tin oxide were prepared on glass substrates using the sol-gel spin-coating method. The films exhibited polycrystalline structure, homogeneous surface morphology, and high transmittance in the visible and near infrared. The doped films showed the presence of additional elements and a band gap ranging from 3.82 to 3.89 eV. The films also displayed low resistivity and high figure of merits in the visible range, with the best performance observed for samples containing 2% aluminum.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Huihuang Xu, Hua Hao, Yanjiang Xie, Xin Wang, Jianlu Geng, Minghe Cao, Zhonghua Yao, Hanxing Liu
Summary: Lead-free BaZr0.25Ti0.75O3 films grown via a sol-gel method on Pt/Ti/SiO2/Si substrates exhibit good microstructure and energy storage performance, with moderate polarization and high breakdown strength, as well as excellent temperature stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
P. Vidhya, K. Shanmugasundaram, P. Thirunavukkarasu, T. Govindaraj, V. Balasubramani, B. Yogeswari, M. Karuppusamy
Summary: In this study, p-PbS/n-Si photodiodes were successfully fabricated using the jet nebulizer spray pyrolysis technique. The effect of substrate temperature on the properties of PbS thin films was investigated. X-ray Diffraction (XRD) confirmed the crystal structure of the films, while Field Emission Transmission Microscopy (FESEM) revealed changes in morphology with increasing temperature. The UV-Vis absorption spectrum showed an increase in bandgap with deposition temperature. The fabricated p-PbS/n-Si diode exhibited excellent rectification and photovoltaic properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Coatings & Films
Ali Mahmoodinezhad, Carlos Morales, Franziska Naumann, Paul Plate, Robert Meyer, Christoph Janowitz, Karsten Henkel, Malgorzata Kot, Marvin Hartwig Zoellner, Christian Wenger, Jan Ingo Flege
Summary: Indium oxide (InxOy) thin films were successfully deposited at low temperatures using plasma-enhanced atomic layer deposition (PEALD), showing high electrical conductivity and optical properties. The films are promising for high-quality thin-film deposition on thermally fragile substrates.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2021)
Article
Optics
Yuanyuan Li, Puxian Xiong, Bibo Lou, Hendrik C. Swart, Chonggeng Ma, Zhiguo Xia
Summary: Broadband NIR emission is achieved in Bi3+ activated perovskite oxides MZrO3 (M = Ba, Sr), and the luminescence mechanism is revealed through experimental and first-principles studies. The valence state of Bi3+ ions is confirmed to be trivalent, and the possibility of NIR emission from lower state bismuth is excluded. The selective occupancy of Bi3+ in different sites enables the emission discrepancy, where Bi3+ on M2+ sites accounts for visible emission while Bi3+ on Zr4+ sites shows NIR emission. The existence of Ba2+ vacancy has a significant influence on the emission spectra of Bi3+ visible emission.
JOURNAL OF LUMINESCENCE
(2023)
Article
Materials Science, Coatings & Films
Songyou Lian, Antonie J. Fourie, Jiangyong Wang, Hendrik C. Swart, Jacobus Johannes Terblans
Summary: Numerical research is conducted on grain boundary diffusion of Cu-Ni bilayer thin films, considering the composition-dependent interdiffusion coefficient and the position of the grain boundary. Fick's second law provides a quantitative assessment of the effects of various factors on the depth profile. A method is proposed to eliminate the impacts of grain boundaries and grain size on the grain boundary diffusion profile, yielding a profile similar to the direct volume diffusion profile. The calculated diffusion parameters are within the bounds of available data.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Chemistry, Multidisciplinary
Govind B. Nair, Sumedha Tamboli, R. E. Kroon, H. C. Swart
Summary: Non-contact thermometry using upconversion luminescence from lanthanide-doped nanoparticles is the ideal option for high precision, accuracy, sensitivity, and spatial resolution temperature probes. This study demonstrates the use of LaOF:Yb3+,Ho3+ upconversion nanoparticles as thermometers with high sensitivity and thermal stability in the temperature range of 303-673 K. The rod-shaped UCNPs with a trigonal crystal structure were obtained through microwave-assisted hydrothermal synthesis. The upconversion emissions from these UCNPs showed green and red emissions under continuous-wave laser irradiation, corresponding to thermally-coupled levels and Stark-split sublevels of the energy level, respectively.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
S. J. Mofokeng, F. V. Molefe, R. E. Kroon, H. C. Swart, T. P. Mokoena, M. S. Dhlamini, M. J. Sithole, L. L. Noto
Summary: ZnTiO3:Er3+,Yb3+ thin film phosphors were successfully deposited by pulsed laser deposition (PLD) at different substrate temperatures. The distribution of the ions in the films was homogeneous and chemical analysis confirmed uniform doping. The optical response of the phosphors varied with the silicon substrate temperature, and under 980 nm diode laser excitation, the ZnTiO3:Er3+,Yb3+ film phosphors displayed up-conversion emission from the Er3+ electronic transitions.
Article
Energy & Fuels
Busisiwe Petunia Mabuea, Elizabeth Erasmus, Hendrik Christoffel Swart
Summary: Tungsten carbide-based and molybdenum carbide-based nano-catalysts were synthesized and evaluated as electrocatalysts. The Ni-WC coated electrode exhibited the best catalytic activity for the hydrogen evolution reaction with the lowest overpotential and Tafel slope compared to Pt/C coated electrodes. The Ni-MoC and Co-MoC coated electrocatalysts also showed improved current production and potential change compared to Pt/C coated electrode. The durability test demonstrated the high stability of Co-WC, NiCo-WC, and Ni-MoC coated electrodes.
INTERNATIONAL JOURNAL OF SUSTAINABLE ENERGY
(2023)
Article
Biochemical Research Methods
Ashwini K. Sharma, Govind B. Nair, S. J. Dhoble, Robin E. Kroon, J. J. Terblans, H. C. Swart
Summary: Visible and near-infrared upconversion luminescence from BaY2F8: Yb3+, Tm3+ systems was studied under 980 nm laser excitation. BaY2F8:20 mol% Yb3+, x mol% Tm3+ and BaY2F8: y mol% Yb3+, 0.5 mol% Tm3+ phosphors exhibited prominent upconversion luminescence at 800 and 810 nm. The optimized doping concentrations of Yb3+ and Tm3+ in the BaY2F8 host matrix were evaluated, their spectroscopic properties were determined, and temperature-dependent behavior was investigated by studying the fluorescence intensity ratio of the upconversion peaks.
JOURNAL OF FLUORESCENCE
(2023)
Article
Physics, Condensed Matter
M. Y. A. Yagoub, H. C. Swart, E. Coetsee
Summary: Anomalous emission of ytterbium was observed in terbium-ytterbium co-doped CaF2 up-conversion nanophosphor, which has potential applications in optical communication, sensing, and imaging. The addition of lithium ions as charge compensators decreased the anomalous emission of ytterbium ions. Understanding and applying the mechanism of this anomalous emission could have significant technological implications.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Physics, Condensed Matter
Jai Prakash, Hendrik Swart
Summary: Plasmonic photocatalysts are multifunctional nanomaterials composed of noble metals and wide band gap semiconductors. They show promising opto-electronic and photocatalytic properties due to the unique surface plasmon resonance and photocatalytic properties of noble metals and semiconductors, respectively. Recently, they have shown great potential as multifunctional/multidisciplinary nanomaterials and have been extensively studied for their enhanced functionalities in the fields of energy and environment.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Physics, Multidisciplinary
Ishant Kumar, Avinash Kumar, Sandeep Kumar, Govind B. Nair, H. C. Swart, Arvind K. Gathania
Summary: In this study, Er3+ and Yb3+ co-doped SrTiO3 phosphors were synthesized and characterized. The phosphors exhibited green and red emissions under infrared excitation and showed temperature sensing capabilities. Additionally, the phosphors were used to design photonic molecular logic gates.
Article
Nanoscience & Nanotechnology
Govind B. B. Nair, Sumedha Tamboli, S. J. Dhoble, Hendrik C. C. Swart
Summary: Luminescence nanothermometers based on LaOF:Yb3+, Er3+ upconversion nanoparticles were studied. The fluorescence intensity ratio (FIR) of the nanoparticles was recorded at different temperatures in the visible and near-infrared regions. Optimal laser conditions were identified to prevent laser heating of the nanoparticles. The behavior of the nanoparticles under laser exposure was analyzed to determine the critical laser power below which laser heating was negligible. This approach serves as a benchmark for testing luminescent nanothermometers.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
E. H. H. Hasabeldaim, H. C. Swart, R. E. Kroon
Summary: The luminescence properties of CaF2:Tb3+ nanoparticles were investigated to understand the impact of CaF2 native defects on the photoluminescence dynamics of Tb3+ ions. The incorporation of Tb ions into the CaF2 host was confirmed through X-ray diffraction and X-ray photoelectron spectroscopy. Cross-relaxation energy transfer was observed in the photoluminescence spectra and decay curves upon excitation at 257 nm. However, the presence of traps was indicated by the unusually long lifetime of the Tb3+ ion and the decreasing emission lifetime of the D-5(3) level, which was further studied using temperature-dependent photoluminescence measurements, thermoluminescence, and lifetime measurements at different wavelengths. This study highlights the important role of CaF2 native defects in the photoluminescence dynamics of Tb3+ ions incorporated in a CaF2 matrix. The sample doped with 10 mol% of Tb3+ ions exhibited good stability under prolonged 254 nm ultraviolet irradiation.
Article
Physics, Condensed Matter
Osama K. M. Bashiar, R. E. Kroon, H. C. Swart, R. A. Harris
Summary: ZnO thin films with near-infrared emission were successfully fabricated using pulsed laser deposition under vacuum conditions, without the need for additional gases or implantation methods. The NIR emission was hypothesized to be caused by defects in the ZnO film due to high energy particle impacts on the sample surface.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Chemistry, Inorganic & Nuclear
Rethabile Makole, Zamaswazi P. Tshabalala, Mudalo Jozela, Franscious R. Cummings, Hendrik C. Swart, David E. Motaung
Summary: This study focuses on the gas sensing properties of Co3O4 - n-type semiconducting metal oxides (Co-nSMOs) heterostructures, particularly the Co3O4-In2O3 (Co-In) heterostructure which exhibited excellent selectivity and response towards xylene. The Co-In sensor showed good sensitivity, low limit of detection, and long-term stability. The improved performance can be attributed to enriched surface oxygen adsorption and the synergistic combination of Co3O4 and In2O3 at the nanoscale p-n heterojunction.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Thabang J. Theka, Boiketlo R. J. Thamaga, Zamaswazi P. Tshabalala, Rapelang G. Motsoeneng, Hendrik C. Swart, David E. Motaung
Summary: In this study, low-concentration benzene detection was achieved by loading Fe3+ on the surface of Co3O4/TiO2, and low detection limits were provided. The heterostructure-based sensor exhibited good stability and high response to benzene.
APPLIED SURFACE SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Sumedha Tamboli, Govind B. Nair, Ashwini K. Sharma, S. J. Dhoble, H. C. Swart
Summary: Luminescence thermometry is a unique tool for remote temperature sensing, which exploits the variations in the luminescence properties of the probe. Thermometry based on fluorescence intensity ratios (FIR) is widely used due to its self-referenced measure. A study discovered LaOF:Yb3+,Tm3+ upconversion nanoparticles that exhibit blue and near-infrared upconversion photoluminescence under 980 nm laser excitation, making them suitable for temperature sensing.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
A. Aly, M. Ghali, A. Osman, M. K. El Nimr
Summary: This study reports the discovery of naturally occurring luminescent graphene quantum dots (GQDs) in coconut water for the first time. The GQDs were identified through various measurements and were found to have dual sizes and emit different wavelengths of light. The GQDs were also utilized as an efficient optical sensor for aniline liquid detection.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zehua Chen, Wencheng Ma, Qinglu Fan, Yanhua Liu, Min Sun, Shuo Wang
Summary: The nanoscale e-VOPO4 materials were successfully prepared by hydrothermal synthesis and calcination, showing high purity and suitable particle size. It exhibited satisfactory electrochemical performance as cathode material for sodium ion batteries, making it a potential candidate for high energy storage systems.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Tao Liu, Yahui Liu, Le Ling, Zhongxi Sheng, Zao Yi, Zigang Zhou, Yongjia Yang, Bin Tang, Qingdong Zeng, Tangyou Sun
Summary: In this paper, a terahertz (THz) micronano device that can switch between bimodal absorption and plasmon-induced transparency (PIT) is proposed. The device consists of layers of graphene, silica, and vanadium dioxide, and has a simple structure, easy tuning, and wide-angle absorption. The device achieves perfect absorption at specific frequencies and is highly sensitive to environmental refractive index. It also has the functions of a three-frequency asynchronous optical switch and slow light effect.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Xiaobo Luo, Songhan Hu, Qiudong Duan, Dacheng Zhou, Jialin Chen, Yugeng Wen, Jianbei Qiu
Summary: The exploration of solar light absorption by a material is important in photonics and optoelectronics. This study reveals the potential of Ba3-xGa2O6:xBi3+ as a promising candidate for various photonic and optoelectronic applications, and demonstrates the use of the material in double-sided laser printing for three-dimensional optical imaging.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Hemin Wang, Yanling Hao, Lele Xiang, Xiaosi Qi, Lei Wang, Junfei Ding, Yunpeng Qu, Jing Xu, Wei Zhong
Summary: This study designed Fe3O4-FeCO3/MWCNTs/RGO MCNCs composites and fabricated large-scale samples using hydrothermal and freeze-drying methods. The microstructural investigation showed that these materials had a mixed-dimensional structure, which improved impedance matching features, polarization, and conduction loss abilities, leading to significantly enhanced electromagnetic absorption properties.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zhenshan Yu, Hao Chen, Xuequan Chen, Yu-Sheng Lin
Summary: This study presents a silicon dielectric metamaterial (SDM) composed of two outer symmetric semi-circular rings and two inner symmetric split-ring resonators (SRRs). The electromagnetic responses of the SDM device in different modes were studied through numerical simulations and experiments. Increasing the structure height of the SDM device resulted in red-shifted resonances and stronger intensities. This study provides a new design strategy for the development of frequency filtering, polarization switching, and resonance modulation characteristics in THz-wave applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yiming Qi, Na Zhang, Meng Zong, Yangxianzi Liu, Weixing Chen
Summary: This study prepares dielectric/carbon fiber based nanocomposites wave-absorbing materials using liquid diffusion and high temperature carbonization strategies. By tuning the element type, drying mode, and filling amount, the electromagnetic parameters and absorbing properties can be adjusted. The best synthesized sample shows excellent absorbing performance, making it suitable for a wide range of electromagnetic wave absorption applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Carlos D. Gonzales-Lorenzo, T. K. Gundu Rao, Alberto A. Ccollque-Quispe, Jorge Ayala-Arenas, Monise B. Gomes, Betzabel N. Silva-Carrera, Roseli F. Gennari, Valeria S. Pachas, F. Monzon-Macedo, H. Loro, Jose F. D. Chubaci, Nilo F. Cano, Rene R. Rocca, Shigueo Watanabe
Summary: In this study, CaSiO3 doped with different ppm of Eu was synthesized using the devitrification method. Various physical properties were analyzed, revealing that the intensity and temperature of the high-temperature TL peak increased with higher dopant amounts. Fluorescence measurements indicated the presence of Eu2+ and Eu3+ ions in the samples. EPR spectra confirmed the existence of two defect centers.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yanning Qu, Xinyang Li, Mei Cui, Renliang Huang, Wanquan Ma, Yunting Wang, Rongxin Su, Wei Qi
Summary: In this study, a new molybdenum disulfide/N,S-doped carbon quantum dots (MoS2/N,S-CQDs) heterojunction with enhanced light absorption and electrons transfer di-functional properties was constructed via a facile one-pot hydrothermal method. The heterojunction showed remarkable efficiencies in degrading methylene blue (MB) and malachite green (MG) in an actual water system under simulated sunlight irradiation. The facile synthetic technique and effective multifunctional properties of the composite have the potential for further research and industrial applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jiayi Wang, Penggang Ren, Xueyan Zhao, Zhengyan Chen, Yanling Jin, Zengping Zhang
Summary: In this study, a novel homojunction photocatalyst was developed by combining defective g-C3N4 and flaked g-C3N4, which showed excellent degradation performance and cycling stability, and exhibited practicality in several simulation experiments.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jing Yan, Xiaoxiao Zhao, Weixing Chen, Panbo Liu
Summary: This research presents a self-templated strategy to prepare a spherical superstructure of carbon nanorods through material modification and pyrolysis. The resulting material exhibits a large controllable radius of curvature and shows excellent microwave absorbing properties due to its high specific surface area and mesoporous structure.
MATERIALS RESEARCH BULLETIN
(2024)
Review
Materials Science, Multidisciplinary
Qinglin Zeng, Zepeng Lv, Shaolong Li, Bin Yang, Jilin He, Jianxun Song
Summary: Liquid metal batteries possess stable safety performance, high rate performance, and thermal stability. The electrolyte, an important component of the battery, plays a significant role in achieving these remarkable performance characteristics. This paper reviews the important research progress of liquid metal batteries electrolyte and discusses the influence of different electrolyte types on energy efficiency. It also highlights the limitations and challenges of existing electrolytes and proposes key development directions for liquid metal electrolytes.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Song Wu, Junli Wang, Xuanbing Wang, Di Jiang, Jinlong Wei, Xiaoning Tong, Zhenwei Liu, Qingxiang Kong, Naixuan Zong, Ruidong Xu, Linjing Yang
Summary: In this study, a composite electrode composed of Ti/TiH2/beta-PbO2_Mn3O4@C was fabricated and investigated for zinc electrowinning. The composite electrode exhibited low overpotential, Tafel slope, icorr, and high voltage stability, outperforming most reported Ti-based PbO2 electrode materials. The excellent catalytic activity can be attributed to the low resistance and porous interlayer of TiH2 nanosheets, as well as the addition of Mn3O4@C micro-flakes to the active layer.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
E. Tsoutsoumanos, T. Karakasidis, N. Laskaris, P. G. Konstantinidis, G. S. Polymeris, G. Kitis
Summary: This study investigates the correlation between nanocrystal dimensions and thermoluminescence signal magnitude through simulations conducted in Python. Two mathematical models, OTOR and IMTS, were used to derive theoretical luminescence signals. The obtained results were compared with experimental data and a thorough comparative discussion was conducted.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Vishnu Aggarwal, Sudhanshu Gautam, Aditya Yadav, Rahul Kumar, Bipul Kumar Pradhan, Brajesh S. Yadav, Govind Gupta, Senthil Kumar Muthusamy, Sumeet Walia, Sunil Singh Kushvaha
Summary: Recently, there has been a great demand for highly responsive photodetectors that can detect a wide range of wavelengths. Researchers have successfully fabricated a broadband metal-semiconductor-metal photodetector by integrating sputtered Bi2Se3 with laser molecular beam epitaxy grown GaN film. This photodetector shows high responsivity in both the ultraviolet and near-infrared regions.
MATERIALS RESEARCH BULLETIN
(2024)
