Article
Materials Science, Multidisciplinary
Ana Carolina Fernandes da Silva, Luiz Angelo Berni
Summary: Porous silicon, discovered in the mid-1950s, has various applications and is being studied as black silicon to reduce silicon surface reflectance. The study produced samples with varying refractive indexes and found that samples with six layers of refractive index ranging from 1.4 to 2.4 achieved the best results with a reflectance of 5%. The influence of porous layer thickness on reflectance profile was also observed.
Article
Biochemistry & Molecular Biology
Aatrayee Das, Sonia Kundu, Mradu Gupta, Arup Mukherjee
Summary: This work developed an eco-sound nano-bio-hybrid sorbent using sustainable materials for sorptive elimination of congo red and phosphates from aquatic environment. The study demonstrated the near-uniform impregnation of rhombohedral calcium carbonate crystals throughout the biopolymer matrix, and the high adsorption capacity of the developed nanobiohybrid. In addition, the nanobiohybrid showed persistent antibacterial properties.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Analytical
Yu Tang, Yunke Bi, Hao Wei, Zhongyu Hou, Zi Wang
Summary: A general method for improving the dynamic range of electrochemical sensing devices based on 3D porous electrodes through morphological optimization has been introduced. By increasing the array height of 3D-pSi, the electrochemical active surface area (EASA) was raised and linear range of detection of H2O2 was expanded, making it crucial for the fast detection of high concentrations of H2O2 in scenarios such as fuel cells and catalytic oxygen reduction reaction systems.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Electrochemistry
Hui Xu, Yuanhai Bao, Shasha Zuo, Pengdong Chen, Yuanqiang Zhu, Xiuqin Kong, Yong Chen
Summary: In this study, biomass porous carbon KGL is prepared using ginkgo leaves as the precursor and KOH as the activator, and the KGL/CR electrode is fabricated by confining azo dye Congo red into the nanopores of KGL. The results show that KGL has good adsorption performance for organic dye and KGL/CR has excellent capacitance performance.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Haitham T. Hussein, Mustafa K. A. Mohammed, Reham Kamel, Uday M. Nayef
Summary: In this study, n-type porous silicon was fabricated via photoelectrochemical etching with different etching current densities, and copper oxide nanoparticles were deposited on the surface. The results showed that the presence of CuO-NPs led to significantly improved photoelectric performance.
Article
Environmental Sciences
Sara Al-Salihi, Ahmed M. Jasim, Maria M. Fidalgo, Yangchuan Xing
Summary: The highly porous g-Al2O3 nanoshells synthesized from alumina coated carbon black demonstrated excellent adsorption capacity for the removal of Congo Red dye from aqueous solutions. The adsorption equilibrium could be reached within 30 minutes, with a high removal efficiency of 98.6% achieved at pH 4.0. The adsorption capacity of the Al2O3 nanoshells was significantly higher than that of alumina/CB, showing superior performance in dye removal.
Article
Engineering, Environmental
Sudipta Chatterjee, Godfred Ohemeng-Boahen, Divine Damertey Sewu, Barnabas Asamoah Osei, Seung Han Woo
Summary: Alkali treatment increased the adsorption capacity of goethite impregnated chitosan capsules for Congo red and caused changes in their physico-chemical properties, morphology, and mechanical stability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Review
Materials Science, Multidisciplinary
Hashim Alhmoud, Daniel Brodoceanu, Roey Elnathan, Tobias Kraus, Nicolas H. Voelcker
Summary: Metal-assisted chemical etching (MACE) offers control over size, shape, and porosity of porous silicon nanostructures in a single step, making them suitable as biomaterials. The simplicity and flexibility of MACE are advantages, but the complexity of reaction parameters and lack of a complete model hinder rational design. Current understanding of the MACE reaction mechanism still contains uncertainties.
PROGRESS IN MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
D. Basu, J. Das, S. M. Hossain
Summary: This study investigates the performance of porous silicon (PS) optical biosensors with different morphologies. The PS thin films with different morphological characteristics were prepared by varying the parameters of the electrochemical etching process. Reflectance based optical sensing of glucose was performed on all samples, and it was found that the nano PS sample with 5 min etching time exhibited the best performance with high sensitivity and short response time. In contrast, the macro PS samples showed non-linear calibration curves and poor reproducibility and repeatability.
Article
Chemistry, Physical
Haneen D. Jabbar, Makram A. Fakhri, Mohammed Jalal AbdulRazzaq
Summary: The structure of gallium nitride (GaN) on porous silicon (psi) substrate was fabricated by depositing high purity GaN on psi substrate using pulsed laser deposition method. The properties of the fabricated structure were investigated, showing homogeneous distribution of GaN on the psi substrate.
Article
Materials Science, Multidisciplinary
Fedor Ptashchenko
Summary: This study investigates the reactions that can occur on hydrogenated silicon surfaces in aqueous solutions of HF under the influence of both negative and positive ionic complexes using quantum-chemical calculations. It was revealed that the H -> F substitution reaction has a high energy barrier, making classical electrochemical dissolution of silicon unlikely. Additionally, it was found that barrier-free reactions of direct fluorination can occur on certain silicon faces, shedding light on the mechanism of silicon etching and the factors affecting the rate of electrochemical etching of silicon.
COMPUTATIONAL MATERIALS SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
C. Arab, R. El Kurdi, D. Patra
Summary: Zn(Cur)O NPs were synthesized and characterized, with adsorption increasing as the nanoparticle amount increases and dye concentration decreases. An acidic medium was found to improve the adsorption process.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Materials Science, Ceramics
Rohit Malik, Young-Wook Kim, Woo H. Nam
Summary: Porous SiC ceramics with a core-shell structure were fabricated by sintering nano-SiC powder-carbon black compacts in air. During sintering, oxidation of SiC particles led to the formation of a SiO2 shell, while low-temperature phase transformation and precipitation of non-graphitic carbons were also observed.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Emad Moghimi, Mohammad Esmaeil Azim Araghi
Summary: This study investigates the physical and chemical properties of porous silicon, as well as its application in optoelectronic devices. A setup was constructed to create uniform porous silicon with consistent pore diameter and depth, confirmed by FESEM measurements. Topography parameters and fractal dimensions were calculated and compared using AFM images. The optical band gap of silicon and porous silicon was also compared. The fabricated samples were then tested as gas sensors, exposed to ethanol and acetone vapors ranging from 100 to 400 ppm. Interesting results of the application of these samples are reported in the results section.
Article
Chemistry, Physical
Ali A. Yousif, Husam R. Abed, Alwan M. Alwan
Summary: The work involved the fabrication of macro porous silicon layers using Laser Assisted Etching and studied their morphology, structure, and luminescence characteristics. Analysis revealed that as the etching time increased, the thickness and pore diameter of the silicon layer also increased. Gas sensing experiments showed that the sandwich electrode configuration exhibited higher efficiency and faster responses.
Article
Electrochemistry
Ahmed Zaki Al-Hakemy, Abu Bakr Ahmed Amine Nassr, Ahmed Hosny Naggar, Mohamed Salaheldin Elnouby, Hesham Mohamed Abd El-Fattah Soliman, Mahmoud Ahmed Taher
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2017)
Article
Polymer Science
Norhan Nady, Ahmed H. El-Shazly, Hesham M. A. Soliman, Sherif H. Kandil
Article
Biochemistry & Molecular Biology
Elbadawy A. Kamoun, Alaa Fahmy, Tarek H. Taha, Esmail M. El-Fakharany, Mohamed Makram, Hesham M. A. Soliman, Hassan Shehata
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2018)
Article
Chemistry, Physical
A. I. Abd-Elhamid, H. F. Aly, Hesham A. M. Soliman, Ahmed A. El-Shanshory
JOURNAL OF MOLECULAR LIQUIDS
(2018)
Article
Materials Science, Multidisciplinary
Asmaa Nour, Nazly Hassan, Heba M. Refaat, Hesham M. A. Soliman, A. El-Dissouky
MATERIALS RESEARCH EXPRESS
(2018)
Correction
Materials Science, Multidisciplinary
Asmaa Nour, Nazly Hassan, Heba M. Refaat, Hesham M. A. Soliman, A. El-Dissouky
MATERIALS RESEARCH EXPRESS
(2018)
Article
Chemistry, Physical
H. Shokry Hassan, A. B. Kashyout, H. M. A. Soliman, M. A. Uosif, N. Afify
APPLIED SURFACE SCIENCE
(2013)
Article
Materials Science, Multidisciplinary
Abdel-Hady Kashyout, Hesham M. A. Soliman, Marwa Nabil, Ahmed A. Bishara
Article
Nanoscience & Nanotechnology
H. F. Aly, M. A. Akl, Hesham M. A. Soliman, Aref M. E. AbdEl-Rahman, A. I. Abd-Elhamid
APPLIED NANOSCIENCE
(2015)
Article
Chemistry, Physical
A. Abd-Elhamid, Elbadawy A. Kamoun, Ahmed A. El-Shanshory, Hesham M. A. Soliman, H. F. Aly
JOURNAL OF MOLECULAR LIQUIDS
(2019)
Article
Chemistry, Physical
A. A. Nayl, A. Abd-Elhamid, Ahmed A. El-Shanshory, Hesham M. A. Soliman, El-Refaie Kenawy, H. F. Aly
APPLIED SURFACE SCIENCE
(2019)
Article
Engineering, Electrical & Electronic
Ahmed Zaki Al-Hakemy, Abu Bakr Ahmed Amine Nassr, Ahmed Hosny Naggar, Mohamed Salaheldin Elnouby, Hesham Mohamed Abd El-Fattah Soliman, Mahmoud Ahmed Taher
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2020)
Article
Chemistry, Multidisciplinary
A. I. Abd-Elhamid, A. A. Nayl, Ahmed A. El Shanshory, Hesham M. A. Soliman, H. F. Aly
Article
Engineering, Chemical
Norhan Nady, Noha Salem, Ahmed H. El-Shazly, Hesham M. Soliman, Sherif H. Kandil
DESALINATION AND WATER TREATMENT
(2017)
Article
Chemistry, Analytical
Mengmeng Guo, Na Luo, Yueling Bai, Zhenggang Xue, Qingmin Hu, Jiaqiang Xu
Summary: A porous heterostructure WO3-C/In2O3 was designed and prepared for a miniature H2 sensor, which showed higher response value, lower operating temperature, fast response-recovery speed, and low limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Feng Hu, Hui Hu, Yuting Li, Xiaohui Wang, Xiaowen Shi
Summary: Arsenic contamination in water bodies is a significant health risk. This study developed a chitosan-catechol modified electrode for rapid and accurate detection of trace amounts of arsenic. The modified electrode demonstrated good detection capability and resistance to ionic interference, making it suitable for in situ detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Yantao Zhang, Qian Liu, Tao Tian, Chunhua Xu, Pengli Yang, Lianju Ma, Yi Hou, Hui Zhou, Yongjun Gan
Summary: In this study, a lysosome-targeting buffering fluorogenic probe (Lyso-BFP) was designed and synthesized, demonstrating excellent photostability, pH specificity, and responsiveness to lysosomal acidification in living cells. The performance of Lyso-BFP in pH sensing was attributed to the inhibition of the photo-induced electron transfer process. Lyso-BFP allowed for wash-free imaging and long-term real-time monitoring of lysosome pH changes based on its off-on fluorescence behavior and buffer strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wei Cai, Wenbo Sun, Jiayue Wang, Xiaokui Huo, Xudong Cao, Xiangge Tian, Xiaochi Ma, Lei Feng
Summary: In this study, a near-infrared fluorescent probe HCBG was developed for imaging of alpha-GLC. HCBG exhibited excellent selectivity and sensitivity towards alpha-GLC in complex bio-samples, and showed good cell permeability for in situ real-time imaging. Through the high-throughput screening system established by HCBG, a natural alpha-GLC inhibitor was successfully isolated and identified. This study provides a novel fluorescence visualization tool for discovering and exploring the biological functions of diabetes-related gut microbiota, and a high-throughput screening approach for alpha-GLC inhibitor.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Trey W. Pittman, Xi Zhang, Chamindie Punyadeera, Charles S. Henry
Summary: Heart failure is a growing epidemic and a significant clinical and public health problem. Researchers have developed a portable and affordable diagnostic device for heart failure that can be used at the point-of-care, providing a valid alternative to current diagnostics approaches.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Anders O. Tjell, Barbara Jud, Roland Schaller-Ammann, Torsten Mayr
Summary: An optical hydrogen peroxide sensor based on catalytic degradation and the detection of produced oxygen is presented. The sensor offers higher resolution and better sensitivity at lower H2O2 concentrations. By removing O2 from the sample solution, a more sensitive O2 sensor can be used for measurement. The sensor has been successfully applied in a flow-through cell to measure H2O2 concentration in different flow rates.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Seong Jae Kim, Ji-hun Jeong, Gaabhin Ryu, Yoon Sick Eom, Sanha Kim
Summary: Surface-enhanced Raman spectroscopy (SERS) is a high-sensitivity, label-free detection method with various analytical applications. Researchers have developed a hydrophobic SERS substrate based on engineered carbon nanotube arrays (CNT-SERS) and studied the role of structural design at both micro and nanoscales. The substrate demonstrated controlled self-enrichment capability and enhanced sensitivity, with a significant increase in the SERS signal. The study also proposed a theoretical model and a concentration strategy inspired by plants for analyte deposition on microarrays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Dan Zhao, Renjun Jiang, Xiaoqiang Liu, Subbiah Alwarappan
Summary: In this study, a novel ternary composite material was constructed by assembling cerium vanadate nanorods on reduced graphene oxide-microcrystalline cellulose nanosheets, and it was used for real-time monitoring of the concentration of superoxide anions in vivo. The ternary composite showed excellent conductivity, large surface area, and abundant active sites, leading to a wider linear range, high sensitivity, low detection limit, and fast response time for superoxide anion detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Tengfei Wang, Liwen Wang, Guang Wu, Dating Tian
Summary: In this study, a covalent organic framework material TaTp-COF with porous and uniform spheres was successfully prepared via hydrothermal reaction, and it was found to significantly enhance the aggregation-induced emission (AIE) of berberine. The unique emission properties of berberine on TaTp-COF were studied and utilized for the sensitive detection of berberine.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Lin Li, Yilei Ding, Lei Xu, Shuoran Chen, Guoliang Dai, Pengju Han, Lixin Lu, Changqing Ye, Yanlin Song
Summary: In this study, a novel TTI based on a ratiometric fluorescent nanosensor is designed, which has the advantages of high accuracy and low cost. Experimental and theoretical investigations confirm its pH responsiveness and demonstrate its good sensitivity and reliability. By monitoring the total volatile basic nitrogen, this TTI can accurately predict food spoilage and can be adaptively modified for different types of food. The TTI based on this nanosensor enables visual monitoring of food quality.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Fangju Chen, Xueting Wang, Wei Chen, Chenwen Shao, Yong Qian
Summary: Lung cancer is the second most common malignant tumor worldwide. Drug resistance in lung cancer leads to treatment failure and recurrence in majority of patients. This study developed a fluorescent prodrug that can be activated in cancer cells to release drugs, and its signal can be tracked by imaging. It shows a unique autophagy-driven ferroptosis effect, indicating its potential for targeting drug-resistant cancer cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Weichao Li, Qiming Yuan, Zhangcheng Xia, Xiaoxue Ma, Lifang He, Ling Jin, Xiangfeng Chu, Kui Zhang
Summary: This study developed a high-performance gas sensor for formaldehyde detection by modifying ZnSnO3 with ZnO QDs and SnO2 QDs. The modified sensor showed improved sensing response and lower working temperature. The presence of ZnO QDs formed rich heterojunctions, increased surface area, and provided oxygen deficiency for formaldehyde sensing reaction, thus enhancing the sensor performance. This research provides an alternative method to enhance the sensing properties of MOS by QDs modification.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Joung-Il Moon, Eun Jung Choi, Younju Joung, Jin-Woo Oh, Sang-Woo Joo, Jaebum Choo
Summary: A novel nanoplasmonic substrate was developed for biomedical applications, which showed strong hot spots for detecting biomarkers at low concentrations. The substrate, called AuNPs@M13, was made by immobilizing 60 nm gold nanoparticles onto the surface of an M13 bacteriophage scaffold. It demonstrated higher sensitivity and lower limit of detection compared to commercially available assays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Ning Li, Ya Zhang, Ying Xu, Xiaofang Liu, Jian Chen, Mei Yang, Changjun Hou, Danqun Huo
Summary: The molecular subtype of breast cancer guides treatment and drug selection. Invasive tests can promote cancer cell metastasis, so the development of high-performance, low-cost diagnostic tools for cancer prognosis is crucial. Liquid biopsy techniques enable noninvasive, real-time, dynamic, multicomponent, quantitative, and long-term observations at the cellular, genetic, and molecular levels. A Cu-Zr metal-organic framework (MOF) nanoenzyme with monatomic Cu attachment has been synthesized and proven to have high catalytic performance. The sensor constructed using this nanoenzyme shows potential for accurate classification of breast cancer serum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Jeongmin Kim, Hyemin Kim, Seunghyun Park, Hyeonaug Hong, Yong Jae Kim, Jiyong Lee, Jaeho Kim, Seung-Woo Cho, Wonhyoung Ryu
Summary: This study presents a method to fabricate independently functioning microneedle (MN) electrodes with narrow intervals for high precision electrochemical sensing. The optimized mixture of photocurable polymer and single-wall carbon nanotubes was used to mold single composite MNs, which were then attached to pre-patterned electrodes. Plasma etching and electropolymerization were performed to enhance the electrochemical activity, and Prussian blue and glucose oxidase were electrodeposited on the MNs for glucose detection. The MN electrodes showed good sensitivity and linearity, and the feasibility of glucose detection was demonstrated in an in vivo mouse study.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)