Article
Chemistry, Physical
Ruiyi Li, Wen Tao, Xiulan Sun, Yirui Shen, Zaijun Li, Yongqiang Yang
Summary: In this study, Ta2O5 photocatalyst with excellent photodegradation performance was successfully synthesized by introducing GGQD. The photocatalyst showed much higher efficiency in tetracycline photodegradation under solar light compared to traditional Ta2O5, paving a new way for constructing metal nanomaterials with desirable photoelectric properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Chemical
Ma Qiang, Han Xiaomin, Lv Ke, Dong Rui, Hang Zhang, Xin Bo, Zheng Kewen
Summary: This study investigates the preparation and photocatalytic properties of graphene-ZnO nanorod composite with ultrasonic treatment, showing that composite materials prepared with appropriate proportions of raw materials exhibit good photocatalytic performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Physics, Applied
Shuning Wang, Maojun Zheng, Dongkai Jiang, Hao Yuan, Hao Chen, Yunlong Fan, Fanggang Li, Wenlan Zhang, Li Ma, Wenzhong Shen
Summary: Zinc oxide (ZnO) is a promising UV detector material with advantages of wide bandgap, rich resources, simple preparation, and environmental friendliness. However, its complicated preparation processes and complex device structures have limited its application. In this study, a high-performance UV detector based on graphene quantum dot-sensitized GaP@ZnO nanocomposite was successfully fabricated using a simple spin-coating method. This research provides a new method for preparing high-performance optoelectronic devices using material composites and surface modification.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Ravli Maulana Yusuf, Silmi Rahma Amelia, Yusuf Rohmatulloh, Mitsuhiro Sansui, Popy Listiani, Yo Ichikawa, Mitsuhiro Honda, Tety Sudiarti, Atthar Luqman Ivansyah
Summary: Graphene Oxide Quantum Dots (GOQD) have been extensively studied for their applications in photocatalysis and antibacterial activities. This study synthesized GOQD/ZnO nanosheets using pyrolysis and hydrothermal methods, and investigated their photocatalytic and antibacterial properties. The results showed that p-GOQD/ZnO exhibited better photocatalytic activity and antibacterial performance compared to h-GOQD/ZnO, due to its superior characteristics such as synergistic effects, low dislocation density, large surface area, and defects.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Physical
Sina Bazazi, Saeedeh Jodeyri, Seyedeh Parisa Hosseini, Nasser Arsalani, Bahaaldin Rashidzadeh, Soghra Fathalipour, Farzad Seidi, Esmail Hashemi
Summary: This work presents a new green and cost-effective method for synthesizing ZnO/CQD photocatalyst. The presence of carbon quantum dots (CQD) in ZnO nanoparticles enhances the photocatalytic degradation rate. The prepared Z-CQD nanocomposites exhibit higher degradation rate compared to pure ZnO.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yingdi Ma, Yanli Liu
Summary: In this study, a composite photocatalyst of rGO-ZnO was prepared and characterized. The results showed that the rGO-ZnO composites exhibited significantly enhanced photocatalytic activity in the degradation of methyl orange, which was attributed to the high specific surface area and conductivity of rGO, facilitating efficient charge separation in the rGO-ZnO nanocomposite.
Review
Chemistry, Multidisciplinary
Hayfa Alajilani Abraheem Jamjoum, Khalid Umar, Rohana Adnan, Mohd. R. Razali, Mohamad Nasir Mohamad Ibrahim
Summary: Graphene/metal oxide nanocomposites have emerged as a sustainable photocatalytic technology with significant potential in water processing. Various parameters and the structure of the photocatalyst play a crucial role in determining the degradation rate of pollutants.
FRONTIERS IN CHEMISTRY
(2021)
Article
Environmental Sciences
Riu Riu Wary, Dulu Brahma, Maqsuma Banoo, Ujjal K. Gautam, Pranjal Kalita, Manasi Buzar Baruah
Summary: Designing intimate contact between nanostructures and 2D materials is important for influencing charge carrier movement. In this study, a hybrid material of nanostructured zinc oxide and reduced graphene oxide was successfully designed and synthesized. The composite material exhibited excellent photocatalytic activity under visible-light irradiation and showed potential for solar energy utilization.
ENVIRONMENTAL RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Jian-Fu Tang, Yi-Da Sie, Zong-Liang Tseng, Ja-Hon Lin, Lung-Chien Chen, Cheng-Liang Hsu
Summary: In this study, a photodetector and humidity sensor based on zinc oxide nanowires (ZnO NWs) with CsPbBr3 perovskite quantum dots (PQDs) were developed. The excellent optoelectronic properties of PQDs make them ideal for semiconductor sensors. The experimental results showed that the performance of PQD/ZnO NWs was superior to that of ZnO NWs, especially in terms of humidity response and photocurrent.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Mengyu Chen, Xingtong Chen, Wenchen Ma, Xiaojuan Sun, Longjia Wu, Xiongfeng Lin, Yixing Yang, Rui Li, Dongyang Shen, Yu Chen, Song Chen
Summary: A solution to the problems caused by ZnO nanoparticles is reported, using tetramethylammonium hydroxide to stabilize SnO2 nanoparticles and induce charge injection. SnO2-based devices exhibit high electroluminescence efficiency and long operational lifetime, with superior shelf stability, enabling QLEDs with real stability.
Article
Chemistry, Physical
Manh Hoang Tran, Taehyun Park, Jaehyun Hur
Summary: By incorporating graphene quantum dots, the ZnO film's physical and chemical characteristics are improved, leading to enhanced transport of photogenerated carriers and longer charge lifetimes. Under appropriate GQD concentration, the ZnO:GQD/Poly-TPD photodiode shows balanced energy structure, increased mobility, and reduced charge recombination compared to other devices, demonstrating excellent performance in UV detection.
APPLIED SURFACE SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Gunasekaran Madhan, A. Ayisha Begam, L. Vetri Varsha, Rajamani Ranjithkumar, Devaraj Bharathi
Summary: In this study, CS/ZnO nanocomposite with enhanced antibacterial and photocatalytic properties was successfully synthesized using Sida acuta. The nanocomposite showed remarkable growth inhibition activity against B. subtilis and E. coli, while also exhibiting time-dependent photo degradation activity under sunlight irradiation. Overall, the functionalization of biopolymer CS with inorganic ZnO enhanced the bio and catalytic properties of the nanocomposite.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Physical
Ummi Kalsum Hasanah Mohd Nadzim, Nur Hanis Hayati Hairom, Mohamad Alif Hakimi Hamdan, Mohd Khairul Ahmad, Aishah Abdul Jalil, Nurfatehah Wahyuny Che Jusoh, Sofiah Hamzah
Summary: This study focuses on the performance of different morphologies of zinc oxide nanoparticles in thiophene desulfurization. The results show that flower-like zinc oxide flakes exhibit the best performance in thiophene desulfurization. Moreover, all zinc oxide morphologies apply to pseudo-second-order models. The optimal conditions for thiophene desulfurization are pH 7, 0.05 g/L zinc oxide flakes loading, and 90 minutes of contact time.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Shikai Jin, Omar Allam, Kyungbin Lee, Jeonghoon Lim, Michael J. Lee, Sze Hou Loh, Seung Soon Jang, Seung Woo Lee
Summary: In this study, a hybrid carbon framework consisting of reduced graphene oxide and oxygen functionalized carbon quantum dots (CQDs) was successfully synthesized. The incorporation of CQDs resulted in consistent improvements in alkali-ion storage performance, with impressive reversible capacity, rate capability, and cycling stability. Density functional theory calculations provided insights into the electrochemical reactivity trends of CQDs with different alkali-ions.
Article
Engineering, Chemical
Meng-Lin Hsieh, Ruey-Shin Juang, Yasser Ashraf Gandomi, Chun-Chieh Fu, Chien-Te Hsieh, Wei-Ren Liu
Summary: In this study, a heterogeneous graphene quantum dot (GQD)/ZnO composite was proposed as a photocatalyst for degrading antibiotics, and the introduction of N-GQDs significantly enhanced the photocatalytic activity and reaction rate. Optimizing the composition of the GQD/ZnO catalyst achieved high removal ratio and significantly improved rate constant.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Physics, Applied
Mehdi Hesani, Ahmad Yazdani, Kourosh Rahimi
JOURNAL OF APPLIED PHYSICS
(2019)
Article
Materials Science, Multidisciplinary
Kourosh Rahimi, Ahmad Yazdani
Article
Engineering, Electrical & Electronic
Samira Sharifi, Ahmad Yazdani, Kourosh Rahimi
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2020)
Article
Materials Science, Multidisciplinary
Asiye Shokri, Ahmad Yazdani, Kourosh Rahimi
MATERIALS TODAY COMMUNICATIONS
(2020)
Article
Multidisciplinary Sciences
Samira Sharifi, Ahmad Yazdani, Kourosh Rahimi
SCIENTIFIC REPORTS
(2020)
Article
Materials Science, Multidisciplinary
Kourosh Rahimi
Summary: The research proposed a vdW g-ZnO/2H-TiS2 heterostructure adjustable by electric field and strain, featuring a narrow indirect bandgap and large potential drop for optoelectronic devices. Additionally, the study also revealed the tunability of the bandgap and absorption of the heterostructure under different electric fields and strains.
Article
Nanoscience & Nanotechnology
S. Hamidreza Hoseyni, Kourosh Rahimi, Behrad Barakati, Ali Sadeghi, S. Majid Mohseni
Summary: Magnetic anisotropy (MA) is crucial in the design of future spintronic and magnetic devices, especially in structures with few angstroms thickness. Using first-principles calculations, we found that the interface MA in Co/phosphorene heterostructures is comparable to that of ferromagnet/heavy-metal interfaces, despite the weak spin-orbit coupling strength of phosphorus atoms. Furthermore, the magnetic anisotropy energy (MAE) of the system can be significantly increased by applying strain, with the MA varying from perpendicular to in-plane directions.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2021)
Article
Multidisciplinary Sciences
Samira Sharifi, Kourosh Rahimi, Ahmad Yazdani
Summary: Manganese ferrite (MnFe2O4) nanoparticles were synthesized and combined with exfoliated MoS2 nanosheets to create a nanocomposite for supercapacitors. The addition of MoS2 significantly increased the specific capacitance of MnFe2O4, leading to higher energy density, power density, and improved stability, making it suitable for supercapacitors.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Multidisciplinary
Mehdi Hesani, Kourosh Rahimi, Ahmad Yazdani
Summary: The study investigated the relationship between charge doping and correlations in BaFe2As2 using DFT+DMFT, showing that electronic correlations strengthen systematically from electron-doping to hole-doping regimes. Due to its multi-orbital nature, correlations in BaFe2As2 are orbital-dependent, with the Fe-3d(xy) orbital exhibiting the most correlation.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Physics, Condensed Matter
Asiye Shokri, Ahmad Yazdani, Kourosh Rahimi
Summary: The study reveals that the antimonene/palladium ditelluride heterostructure exhibits semiconductor properties and can be controlled to form different types of semiconductors or conductors by changing external electric field and strain parameters. Additionally, the heterostructure shows absorption of light in the ultraviolet and visible regions, indicating its potential for electronic and optoelectronic applications.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Chemistry, Inorganic & Nuclear
Nasrin Abdollahi, Azar Ostovan, Kourosh Rahimi, Mansour Zahedi, Alireza Z. Moshfegh
Summary: Metal-organic frameworks (MOFs) have shown promising potential as photocatalysts for environmental remediation. In this study, TMU-32 MOF exhibited high photocatalytic activity due to its large specific surface area and appropriate band gap energy. Fe3O4@TMU-32 nanocomposite, prepared by combining TMU-32 with Fe3O4 nanoparticles, showed good recyclability and photocatalytic efficiency. This research provides valuable insights for the development of efficient photocatalysts.
INORGANIC CHEMISTRY
(2021)
Article
Energy & Fuels
Mohamad Taghi Dejpasand, Samira Sharifi, Esmaiel Saievar-Iranizad, Ahmad Yazdani, Kourosh Rahimi
Summary: This study investigated the effect of boron and nitrogen doping on the electrochemical energy storage properties of graphene quantum dots (GQDs), finding that N-GQDs showed higher specific capacitance, specific energy, and specific power compared to GQDs and B-GQDs. Additionally, N-GQDs exhibited better cycling stability with 80% capacity retention.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Kourosh Rahimi, Alireza Z. Moshfegh
Summary: The vdW heterostructure of hg-C3N4/g-ZnO has the potential to be a solar-driven photocatalyst for water-splitting reaction with reduced electron-hole recombination rate. By applying external perpendicular electric fields and biaxial strains, band alignment, bandgap energy, and transition type can be tuned to optimize efficiency for water-splitting photocatalysis.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Asiye Shokri, Ahmad Yazdani, Kourosh Rahimi
MATERIALS CHEMISTRY AND PHYSICS
(2020)
Article
Chemistry, Physical
Kourosh Rahimi
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)
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)
