Article
Engineering, Electrical & Electronic
Hemant Ramakant Hegde, Santhosh Chidangil, Rajeev K. Sinha
Summary: This study presents the synthesis and surface immobilization of Au nanostars, Au nanocubes, and Au nanorods for refractometric sensing applications. The results demonstrate that Au nanostars with LSPR peak at 767nm exhibit the highest RI sensitivity among the tested nanostructures.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Applied
Malgorzata Skwierczynska, Przemyslaw Wozny, Marcin Runowski, Piotr Kulpinski, Stefan Lis
Summary: Cellulose has the potential to be a promising material for surface-enhanced Raman scattering (SERS) substrates due to its wide availability, low cost, ease of fabrication, high flexibility, and low optical activity. This study demonstrates the development of a cellulose-based substrate that owes its SERS activity to the presence of gold nanorods in its internal structure, ensuring superior stability and reproducibility. The substrate exhibits plasmonic activity and provides easy and reproducible detection of different analytes via the SERS technique.
CARBOHYDRATE POLYMERS
(2022)
Article
Engineering, Environmental
Spela Slapnicar, Gregor Zerjav, Janez Zavasnik, Matjaz Finsgar, Albin Pintar
Summary: This study investigated the plasmonic Au (1 wt%) catalysts on hydrothermally synthesized TiO2 nanorods. Different sizes of Au nanoparticles (Au NPs) on Au/TiO2 catalysts were obtained by adjusting the mixing duration and calcination parameters. The presence of localized surface plasmon resonance effect was observed in all UV-Vis diffuse reflectance spectra of the catalysts, regardless of the size of Au particles. The study also identified superoxide anion radicals (O2 & BULL;-) as the main reactive oxygen species responsible for the oxidation of bisphenol A (BPA) under visible-light illumination.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Yunshan Fan, Yara Aceta, Esther Hessong, Athena Bengston, Laris A. Biageyian, Quan P. Huynh, Robert M. Corn
Summary: Diffraction patterns observed in SPRI microscopy measurements of single gold nanorods exhibit complex behavior near the longitudinal plasmonic resonance band, with a unitless ratio parameter M-R created to describe the diffraction pattern distribution. Results show that this behavior only occurs in the anomalous dispersion region, when the laser wavelength used is shorter than the AuNR plasmonic resonance maxima.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Physics, Multidisciplinary
Yao Li, Yonggang Yang, Chengbing Qin, Yunrui Song, Shuangping Han, Guofeng Zhang, Ruiyun Chen, Jianyong Hu, Liantuan Xiao, Suotang Jia
Summary: By utilizing two-photon photoluminescence measurements, this study revealed the ultrafast dynamics of individual Au nanobipyramids, demonstrating a two orders of magnitude enhancement in photoluminescence and the transition of nonlinearity. The presence of intermediate states in noble metal nanoparticles plays a critical role in understanding their ultrafast dynamics, as shown in this research.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Analytical
Kimia Kermanshahian, Abbas Yadegar, Hamid Moghimi, Hedayatollah Ghourchian
Summary: This study confirms the ability of Fe3O4@Au nanoparticles in iodide oxidation and utilizes the synergy between these nanoparticles and molybdate ions to enhance the etching rate, resulting in a rapid, cost-effective, and ultrasensitive genosensor for H. pylori detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Lin Li, Fenglian Qi, Jiong Guo, Jing Fan, Wenxiang Zheng, Murtaza Ghulam, Weizhi Wang, Zihui Meng, Lili Qiu
Summary: In this study, Fe2O3@Au hexagonal nanodisks with tunable near-infrared (NIR) absorptions were successfully prepared. The localized surface plasmon resonance (LSPR) peaks of Au nanodisks were accurately tuned in the NIR therapeutic window. The Fe2O3@Au nanodisks showed low cytotoxicity and high photothermal therapy (PTT) performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Analytical
Meng-Qi He, Yongjian Ai, Wanting Hu, Xiaomeng Jia, Lei Wu, Mingyu Ding, Qionglin Liang
Summary: By using DNA as an etching agent, it is possible to control the morphology and optical properties of plasmonic nanoparticles, while also introducing fluorescence properties. This strategy allows for precise tuning of localized surface plasmon resonance (LSPR) and fluorescence-composited dual-mode signals.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Jia-hui Sun, Bin Liu, Ding Liang, Meng -lei Zhu, Xiao-niu Peng, Xi-na Wang, Hui Yuan, Zhong-Jian Yang, Ya-lan Wang
Summary: This study investigates the enhancement of photocatalytic hydrogen production efficiency in water splitting by modulating the structure of nano materials. The addition of Au nanorods and MoS2 quantum dots significantly improves the photocatalytic activity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Analytical
Meng Sun, Yutong Song, Haoyu Wu, Qi Wang
Summary: In this paper, three different structures of surface plasmon resonance (SPR) sensors based on the Kretschmann configuration were designed and the effects of SiO2 shapes on the SPR sensor were investigated. The sensitivity of Au/SiO2 nanospheres was found to be 2875.4 nm/RIU, which is 25.96% higher than that of the sensor with a gold array. The increase in sensor sensitivity is attributed to the change in SiO2 material morphology.
Article
Materials Science, Multidisciplinary
Fei Hu, Ting Li, Tianbiao Sun, Yidan Liu, Dongqi Yu, Rongrong Jia, Liyi Shi, Lei Huang
Summary: This work presents a controllable, green, and facile strategy for preparing Au NRs@MnO2 core/shell nanosheets using the LSPR effect of gold nanorods. MnO2 is obtained through the reduction of KMnO4 with photoelectrons induced by the LSPR effect. Methanol is found to be significant in maintaining the shape of Au nanorods by acting as a hole scavenger, and the OER performance of the resulting Au NRs@MnO2 is notably enhanced under proper irradiation and stable after 1000 cycles.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Ruoqi Ai, Christina Boukouvala, George Lewis, Hao Wang, Han Zhang, Yunhe Lai, He Huang, Emilie Ringe, Lei Shao, Jianfang Wang
Summary: A simple method for reshaping immobilized Au nanoplates through plasma treatment is demonstrated, resulting in the formation of nearly periodic right pyramid arrays on the surface. The gaseous environment in the plasma-treatment system, specifically nitrogen-containing environments, plays a significant role in the reshaping process. The reshaped Au nanoplates exhibit enhanced optical properties, including higher refractive index sensitivities and increased surface-enhanced Raman scattering intensities.
Article
Materials Science, Multidisciplinary
Jian-Ping Sun, Ya-Tao Ren, Kai Wei, Ming-Jian He, Bao-Hai Gao, Hong Qi
Summary: Photoacoustic imaging benefits from the use of gold nanorods as contrast agents. The size change of gold nanorods affects their absorption, heat transfer, and photoacoustic characteristics. Increasing the specific surface area enhances thermal coupling and improves heat transfer, while absorption characteristics determine the photothermal and photoacoustic responses. Therefore, improving absorption characteristics is more important than increasing specific surface area, and increasing specific surface area can enhance the photostability of gold nanorods.
RESULTS IN PHYSICS
(2022)
Article
Chemistry, Analytical
Bin Zhang, Xiaoming Wang, Wei Hu, Yiquan Liao, Yichang He, Bohua Dong, Minggang Zhao, Ye Ma
Summary: This work presents a photo-responsive Au@Fe3O4 nanozyme with excellent peroxidase-like activity based on gold nanoparticles (Au NPs). The hot electrons of Au NPs excited by a surface plasmon resonance (SPR) effect enhance the catalytic activity of Au@Fe3O4 in oxidizing 3,3′,5,5′-tetramethylbenzidine (TMB) and detecting hydroquinone (HQ). The magnetic separation and reusability of the nanozyme further contribute to its cost-effectiveness. The sensor exhibits a detection linear range of 0-30 μM and a lowest detection limit of 0.29 μM. Good recovery rates are achieved in the detection of real water samples, providing promising references for the development of HQ detection technology in seawater.
Article
Chemistry, Applied
Jin-Feng Liao, Ya-Ting Cai, Jun-Yan Li, Yong Jiang, Xu-Dong Wang, Hong-Yan Chen, Dai-Bin Kuang
Summary: The optoelectronic performance of CsPbBr3 nanocrystal is limited by charge carrier recombination and narrow light absorption range, which can be resolved through coupling with plasmonic Au nanoparticles. The CsPbBr3-Au nanocomposite exhibits excitation-wavelength dependent carrier transfer behavior, leading to improved CO2 photocatalytic reduction activity.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Mostafa R. Abukhadra, Fatma M. Dardir, Mohamed Shaban, Ezzat A. Ahmed, Mamdouh F. Soliman
ENVIRONMENTAL CHEMISTRY LETTERS
(2018)
Article
Chemistry, Multidisciplinary
Mohamed Shaban, Mostafa R. Abukhadra, M. G. Shahien, Suzan S. Ibrahim
ENVIRONMENTAL CHEMISTRY LETTERS
(2018)
Article
Polymer Science
Mohamed Shaban, Mostafa R. Abukhadra, Aya S. Mohamed, Mohamed G. Shahien, Suzan S. Ibrahim
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2018)
Article
Engineering, Environmental
Mohamed Shaban, Mohamed Rabia, Walid Fathallah, Neama Abd El-Mawgoud, Asmaa Mahmoud, Heba Hussien, Omnia Said
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2018)
Article
Engineering, Chemical
Mostafa R. Abukhadra, Mohamed Rabia, Mohamed Shaban, Francis Verpoort
ADVANCED POWDER TECHNOLOGY
(2018)
Article
Physics, Multidisciplinary
E. Shivanian, M. R. Ansari, M. Shaban
CANADIAN JOURNAL OF PHYSICS
(2019)
Article
Engineering, Chemical
Mohamed Shaban, Abdallah M. Ashraf, Heba AbdAllah, H. M. Abd El-Salam
Article
Environmental Sciences
Mostafa R. Abukhadra, Fatma M. Dardir, Mohamed Shaban, Ezzat A. Ahmed, Mamdouh F. Soliman
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2018)
Article
Nanoscience & Nanotechnology
Mohamed Shaban, Mohamed Rabia, Sara Ezzat, Naglaa Mansour, Ebtisam Saeed, Said M. Sayyah
JOURNAL OF NANOPHOTONICS
(2018)
Article
Materials Science, Ceramics
Mohamed Shaban, Mohamed I. Sayed, Mohamed G. Shahien, Mostafa R. Abukhadra, Zeinab M. Ahmed
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2018)
Article
Optics
Mohamed A. Basyooni, Ashour M. Ahmed, Mohamed Shaban
Article
Multidisciplinary Sciences
Mohamed Shaban, Fatma Mohamed, Semsem Abdallah
SCIENTIFIC REPORTS
(2018)
Article
Materials Science, Multidisciplinary
Mohamed Shaban, Mona Ali, Kamal Abdelhady, Aftab Aslam Parwaz Khan, Hany Hamdy
Article
Chemistry, Physical
Abdelrahman M. Rabie, Mohamed Shaban, Mostafa R. Abukhadra, Rania Hosny, Sayed A. Ahmed, Nabel A. Negm
JOURNAL OF MOLECULAR LIQUIDS
(2019)
Article
Multidisciplinary Sciences
Mohamed Shaban, Mostafa R. Abukhadra, Mohamed Rabia, Yasmin Abd Elkader, Mai R. Abd El-Halim
RENDICONTI LINCEI-SCIENZE FISICHE E NATURALI
(2018)