Review
Chemistry, Multidisciplinary
Milena Tomic, Milena Setka, Lukas Vojkuvka, Stella Vallejos
Summary: This review summarizes recent research efforts and developments in nanomaterials for sensing volatile organic compounds, focusing on key materials such as metal oxides, conductive polymers, and carbon-based materials. It delves into the characteristics and tuning of these materials to enhance functionality in VOCs sensing. Additionally, the need for exploring new hybrid material combinations and incorporating other transducing principles for mixed output concepts is identified.
Article
Chemistry, Analytical
Yutong Han, Yuan Ding, Wenyu Zhang, Haozhe Zhuang, Zifeng Wang, Zhanhong Li, Zhigang Zhu
Summary: Transition metal carbides/nitrides (MXenes) and transition metal dichalcogenides (TMDs) have shown great potential in gas sensors due to their surface properties. In this study, SnS2 nanoflakes were integrated with Ti3C2Tx skeleton platforms for VOC detection. The SnS2/Ti3C2Tx sensor exhibited fast response/recovery times, excellent selectivity, and reliable long-term stability, making it a promising option for VOC detection at room temperature.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Materials Science, Multidisciplinary
Susan Samadi, Mahsa Nouroozshad, Seyed Amirabbas Zakaria
Summary: The research utilized the Staudenmaier method to synthesize reduced graphene oxide for the ZnO@SiO2/rGO nanocomposite preparation. The analysis through SEM, EDS, XRD, FT-IR, and TEM confirmed the structure of the fabricated nanocomposite and its potential application as a gas sensor.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Mostafa Shooshtari, Sten Vollebregt, Yas Vaseghi, Mahshid Rajati, Saeideh Pahlavan
Summary: Detection of hazardous toxic gases for air pollution monitoring and medical diagnosis has been researched. In this paper, a Titanium dioxide (TiO2)-based gas sensor enhanced with gold nanoparticles was fabricated and characterized. The presence of gold nanoparticles on the surface of TiO2 was found to enhance the sensitivity response of gas sensors by up to about 40%. The fabricated gas sensor showed sensitivity to acetone, methanol, and ethanol vapors at room temperature and the recovery time of the gold decorated TiO2 sensor was less than 40 seconds.
Article
Chemistry, Physical
Jun Min Suh, Donghwi Cho, Sangmin Lee, Tae Hyung Lee, Jae-Wook Jung, Jinho Lee, Sung Hwan Cho, Tae Hoon Eom, Jung-Wuk Hong, Young-Seok Shim, Seokwoo Jeon, Ho Won Jang
Summary: This study focuses on highly porous and periodic 3D TiO2 nanostructures for indoor air quality monitoring. The nanostructures show unprecedented gas response and extremely fast response time, providing promising perspectives for the development of chemoresistive gas sensors in the Internet of Everything application.
Review
Chemistry, Inorganic & Nuclear
Riya Alice B. John, A. Ruban Kumar
Summary: The presence of toxic and harmful gases pose serious threats to human health and the environment. Selective detection of these gases, using metal-oxide-based nano-materials, is becoming increasingly important. While there is a thriving area for monitoring VOCs and combustible gases, research in gas detection is still relatively limited.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Jun Min Suh, Young Geun Song, Jung Hwan Seo, Myoung Sub Noh, Min Gyu Kang, Woonbae Sohn, Jinho Lee, Kwangjae Lee, Donghwi Cho, Seokwoo Jeon, Chong-Yun Kang, Young-Seok Shim, Ho Won Jang
Summary: Researchers irradiate high-power lasers on existing metal-oxide nanostructures to expose the hidden inner surface, leading to enhanced surface area for chemical sensor applications and remarkable gas-sensing performance. Decorating noble metal catalysts on both inner and outer surfaces of the nanostructures results in high gas response and selectivity to volatile organic compounds. The effects of high-power laser irradiation on the morphological evolution of metal-oxide nanostructures can be numerically simulated and experimentally verified, providing a new perspective for the time-efficient development of nanostructure-based electronic devices.
Article
Chemistry, Multidisciplinary
Eduardo Fernandez, Paula G. Saiz, Nikola Perinka, Stefan Wuttke, Roberto Fernandez de Luis
Summary: This paper evaluates the potential of 2D printing technologies to create thin film gas sensors from IL/MOF composites. The sensors show a rapid response to changes in gas concentration and can detect variations in the range of 10k-100k ppm in less than a second. The IL/MOF materials offer possibilities to tailor the sensor's porosity, chemistry, selectivity, and electrical response.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Environmental Sciences
Qi Pan, Qing-Yu Liu, Jing Zheng, Yan-Hong Li, Song Xiang, Xiao-Jie Sun, Xiao-Song He
Summary: Gas emitted from landfills contains a large quantity of volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs), some of which are carcinogenic, teratogenic, and mutagenic. The global hazards of VOCs and SVOCs in landfill gas to human health remain unclear. To quantify the global risk distributions of these pollutants, the composition and concentration data of VOCs and SVOCs from 72 landfills in 20 countries were collected and their human health risks were assessed. Organic compounds in landfill gas primarily result from the biodegradation of natural organic waste or the emissions and volatilization of chemical products. The respiratory system, particularly the lung, was found to be the major target organ of VOCs and SVOCs, with additional adverse health impacts ranging from headache and allergies to lung cancer. Aromatic and halogenated compounds were the primary sources of health risk, while ethyl acetate and acetone from the biodegradation of natural organic waste also exceeded the acceptable levels for human health. Overall, VOCs and SVOCs affected residents within 1,000 m of landfills. Air temperature, relative humidity, air pressure, wind direction, and wind speed were the major factors that influenced the health risks of VOCs and SVOCs. Currently, landfill risk assessments of VOCs and SVOCs are primarily based on respiratory inhalation, with health risks due to other exposure routes remaining poorly elucidated. In addition, potential health risks due to the transport and transformation of landfill gas emitted into the atmosphere should be further studied.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Chemistry, Analytical
Quan Zou, Toshio Itoh, Woosuck Shin, Makoto Sawano
Summary: This study tests the classification performance of a sensing system using simulated VOC gases and finds that the AIST sensors have better sensing ability than commercial sensors. An artificial neural network is developed to predict gas concentration with excellent performance. This study provides a promising method for rapidly screening respiratory diseases.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Health Care Sciences & Services
Dian Kesumapramudya Nurputra, Ahmad Kusumaatmadja, Mohamad Saifudin Hakim, Shidiq Nur Hidayat, Trisna Julian, Budi Sumanto, Yodi Mahendradhata, Antonia Morita Iswari Saktiawati, Hutomo Suryo Wasisto, Kuwat Triyana
Summary: The RT-qPCR method is widely used for detecting SARS-CoV-2, but clinicians prefer to diagnose COVID-19 by combining clinical signs and symptoms, laboratory tests, imaging, and multivariable clinical prediction models. Researchers report the development of a low cost, noninvasive method using a portable electronic nose (GeNose C19) to rapidly screen for COVID-19.
NPJ DIGITAL MEDICINE
(2022)
Review
Engineering, Electrical & Electronic
Avik Sett, Tanisha Rana, Umamaheswari Rajaji, Rinky Sha, Ting-Yu Liu, Tarun Kanti Bhattacharyya
Summary: This review paper discusses the potential of using 2D nanomaterials-based gas sensors in non-invasive disease detection. These sensors, by identifying biomarkers in human breath, can distinguish between healthy patients and those with diseases. The paper explores the characteristics of 2D nanomaterials, their sensing mechanism, and methods used in the selective detection of biomarker molecules, while also providing insights on future developments.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Agronomy
Anna Taglienti, Fabrizio Araniti, Amalia Piscopo, Antonio Tiberini
Summary: This study found that infection with onion yellow dwarf virus induces changes in volatile organic compounds in onions during storage, mainly mono- and poly-sulfides. Statistical analysis allowed clustering of samples based on the composition of volatile organic compounds and identification of key compounds responsible for such classification.
Article
Engineering, Environmental
Seongbin Lee, Sooyeon Kim, Sang Soo Han, Dong-Wan Kim, Jiwon Lee, Youngtak Oh
Summary: In this study, Fe3O4-doped reduced graphene oxide (Fe-rGO) materials were prepared via a liquid-phase reduction technique under different coagulation conditions. The Fe-rGO adsorbents showed an effective and selective adsorption of amphiphilic VOCs, which was attributed to the synergistic effect of Fe3O4 nanoparticles and O active sites. The strategy of fabricating a metal oxide-carbon heterostructure provides a selective adsorption platform for amphiphilic VOCs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Liang Wang, Ying Cheng, Saianand Gopalan, Fang Luo, Khairunnisa Amreen, Ritesh Kumar Singh, Sanket Goel, Zhenyu Lin, Ravi Naidu
Summary: Currently, various advanced methods are being used in gas sensing and monitoring, including detecting hazardous gas leaks and monitoring ambient air. Commonly used technologies include photoionization detectors, electrochemical sensors, and optical infrared sensors. However, these sensors, which are nonselective or semiselective, can be affected by unwanted analytes. To address this issue, gas separation and discrimination technologies such as gas permeable membranes, metal-organic frameworks, microfluidics, and IR bandpass filters have been developed. Although these technologies have not been extensively utilized in the field for vapor intrusion monitoring, they show promise for further development and application. This review provides an overview and summary of the existing gas separation and discrimination technologies for popular gas sensors used in environmental applications.
Article
Engineering, Electrical & Electronic
Hosam M. Gomaa, H. A. Saudi, I. S. Yahia, H. Y. Zahran
Summary: A new approach has been developed in this study to investigate the correlation between the optical and electrical conductivities of cerium sodium borate glasses. The amorphous nature of the samples was proven through X-ray diffraction analysis. The optical conductivity and dielectric parameters were fitted using Lorentz-Drude and Cole-Cole models, respectively. The study also analyzed the changes in different parameters with varying CeO2 content.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Health Care Sciences & Services
Rasha M. K. Mohamed, Osama R. Shahin, Nadir O. Hamed, Heba Y. Zahran, Magda H. Abdellattif
Summary: Patient behavioral analysis is crucial for treating patients with head trauma, neurological disease, and mental illness. The advancement of smart healthcare and the Internet of Things has revolutionized the traditional healthcare system, offering improved medical facilities and assisting doctors and hospitals. Collecting and monitoring patient's medical information and health data, and analyzing it using machine learning algorithms, helps determine the patient's exact health state.
JOURNAL OF HEALTHCARE ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
Walaa M. Taha, Mohamed Morsy, Nadra A. Nada, Medhat A. Ibrahim
Summary: This study investigates the interaction between carbon nanotubes and metal oxides using computational methods. The results demonstrate that the interaction enhances the reactivity of carbon nanotubes, with CNT-Co3O4 showing potential applications in sensing devices.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Biochemistry & Molecular Biology
Mohamed Morsy, Ahmed I. I. Abdel-Salam, Islam Gomaa, Hesham Moustafa, Haitham Kalil, Ahmed Helal
Summary: The demand for reactive dyes has increased rapidly, resulting in the contamination of soil and water streams by dye-containing effluent waste. In response, researchers have focused on using functionalized nanomaterials to remove these harmful dyes. A 3D polyurethane foam loaded with reduced graphene oxide (rGO) and ZnO nanocomposite has been proposed as an efficient structural design for dye degradation under visible light. The synthesized structure exhibited an exceptional adsorption capacity for the degradation of Methylene blue (MB) dye, with complete degradation observed within 3 hours.
Article
Crystallography
Samer H. Zyoud, Ibrahim S. Yahia, Moyad Shahwan, Ahed H. Zyoud, Heba Y. Zahran, Mohamed Sh. Abdel-wahab, Malek G. Daher, Mohamed Nasor, Ghaseb N. Makhadmeh, Nageeb Hassan, Akram Ashames, Naser Qamhieh
Summary: In this study, pure and Ag-doped ZnO submicron structures were prepared using laser-assisted chemical bath synthesis (LACBS) without a catalyst. The photocatalytic degradation of Methylene Blue was investigated under blue laser irradiation. The prepared Ag-decorated ZnO showed enhanced photocatalytic activity due to its high surface area and catalytic activity. The visible light absorption was improved by tuning the band-edge, enabling effective dye degradation.
Article
Materials Science, Multidisciplinary
Ayman I. Madbouly, Wael S. Hassanien, Mohamed Morsy
Summary: A novel polyurethane foam/rGO/BaTiO3 pressure sensor was prepared for the detection and monitoring of various human activities. The sensor exhibited excellent quality, high sensitivity, and fast response and recovery behavior without noticeable hysteresis. It offers potentialities and efficiency for pressure-sensing appliances.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Physical
Samer H. Zyoud, Samer O. Alalalmeh, Omar E. Hegazi, Ibrahim S. Yahia, Heba Y. Zahran, Hamed Abu Sara, Samir Haj Bloukh, Moyad Shahwan, Ahed H. Zyoud, Nageeb Hassan, Akram Ashames, Malek G. Daher, Ghaseb N. Makhadmeh, Ammar Jairoun, Naser Qamhieh, Mohamed Sh. Abdel-wahab
Summary: Antimicrobial resistance is a significant threat to global health due to factors such as water scarcity and suboptimal hygienic practices. A comprehensive strategy is needed to address AMR, including improved access to potable water, development of innovative antibiotics, and exploration of alternative treatment modalities such as using zinc oxide nanoparticles for water purification and antimicrobial applications. The Laser-Assisted Chemical Bath Synthesis technique facilitates the fabrication of pure ZnO nanostructures, providing a potential solution for mitigating pathogen proliferation and managing wastewater.
Article
Crystallography
Samer H. H. Zyoud, Wissal Jilani, Abdelfatteh Bouzidi, Thekrayat H. H. AlAbdulaal, Farid A. A. Harraz, Mohammad S. S. Al-Assiri, Ibrahim S. S. Yahia, Heba Y. Y. Zahran, Medhat A. A. Ibrahim, Mohamed Sh. Abdel-wahab
Summary: The new proton-conducting composite electrolyte films (PCCEFs) consisting of polyvinyl alcohol (PVA) with varying ammonium fluoride salt concentrations were created using an expanded liquid casting process. The X-ray diffraction (XRD) study confirms the composite electrolyte films (CEFs) formation. The suggested composites evaluated successful CUT-OFF laser filters and attenuation, as well as limiting laser power systems.
Article
Crystallography
Samer H. Zyoud, Vanga Ganesh, Che Azurahanim Che Abdullah, Ibrahim S. Yahia, Ahed H. Zyoud, Atef F. I. Abdelkader, Malek G. Daher, Mohamed Nasor, Moyad Shahwan, Heba Y. Zahran, Mahmoud S. Abd El-sadek, Elbadawy A. Kamoun, Saleh M. Altarifi, Mohamed Sh. Abdel-wahab
Summary: This study synthesized pure and Ni-doped (1%, 2%, and 3%) nanostructures using a novel laser-assisted chemical bath synthesis technique. Various analysis methods were used to characterize the samples and demonstrate their excellent photocatalytic performance.
Article
Chemistry, Physical
Hesham Moustafa, Mohamed H. Hemida, Mohamed A. Shemis, Alain Dufresne, Mohamed Morsy
Summary: This study presents a highly efficient humidity sensing material based on folic acid (FA) functionalized graphene oxide (GO) embedded in a chitosan (CS)/polyvinyl alcohol (PVA) matrix. The nanosensors with various GO-FA contents were fabricated and characterized for their morphology, tensile strength, Raman spectroscopy, antibacterial activities, and humidity sensing properties. The sensor C10, with 10% GO-FA content, exhibited the highest sensitivity and ultrafast response/recovery times (2.6 s/3.5 s), making it suitable for intelligent food packaging and preservation.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Applied
Rania Badry, Maroof A. Hegazy, Ibrahim S. Yahia, Hanan Elhaes, Heba Y. Zahran, Medhat A. Ibrahim
Summary: In this study, PVA-based nanocomposites were synthesized using the conventional casting method, incorporating zinc oxide nanoparticles and graphene oxide. The optical properties of the synthesized nanocomposites were characterized, showing improved absorption and reduced optical band gap with the addition of nanofillers.
BIOINTERFACE RESEARCH IN APPLIED CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
A. A. G. El-Shahawy, W. Kamal, O. M. Sayed, W. M. A. El Rouby, H. Y. Zahran, I. S. Yahia, S. I. El-Dek, A. A. Farghali
Summary: This suggested research focuses on the construction of a nanocomposite as a pharmaceutical carrier to regulate and preserve the release of Ketoprofen and Pentoxifylline. The results show that the prepared nanocomposites can control and continue the release of the drugs, and Langmuir model fits the sorption equilibrium of Ketoprofen and Pentoxifylline onto the nanocomposites.
DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES
(2022)
