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2022 Advances in science and Engineering Technology International Conferences, ASET 2022

作者： Aljaghoub, Haya Alashkar, Adnan Alami, Abdul Hai Tawalbeh, Muhammad University of Sharjah Department of Industrail Engineering and Engineering Management Sharjah United Arab Emirates American University of Sharjah Materials Science and Engineering PhD Program Sharjah United Arab Emirates University of Sharjah Department of Sustainable and Renewable Energy Engineering Sharjah United Arab Emirates

ISBN: (纸本)9781665418010

The paper investigates the correlation between solar irradiance and sunlit hours for the city of Sharjah, United Arab Emirates. This correlation is a strong function of the weather conditions, and is vital for the design and operation of solar energy systems. The Angstrom Model is a straightforward tool that establishes a linear relationship where the model parameters b and a (slope and y-intercept, respectively) are evaluated through plotting of experimental measurements. Wind speed and relative humidity are collected to interpret their effect on the quality of incident solar radiation. The model takes into consideration winter and summer months of the year 2021, hence it provides a complete weather pattern for the year. With continuous data logging, the model will be developed to predict the weather patterns of the city of Sharjah. © 2022 IEEE.

关键词： Solar energy

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Correction: Comparative study on formic acid sensing properties of flame-made Zn2SnO4 nanoparticles and its parent metal oxides

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Physical Chemistry Chemical Physics 2023年第27期25卷 18497-18498页

作者： Matawee Punginsang Kanittha Inyawilert Mameaseng Siriwalai Anurat Wisitsoraat Adisorn Tuantranont Chaikarn Liewhiran Department of Physics and Materials Science Faculty of Science Chiang Mai University Chiang Mai 50200 Thailand PhD Program in Nanoscience and Nanotechnology (International Program/Interdisciplinary) Faculty of Science Chiang Mai University Chiang Mai Thailand Graduate School Chiang Mai University Chiang Mai Thailand Center of Excellence in Materials Science and Technology Chiang Mai University Chiang Mai 50200 Thailand National Security and Dual-Use Technology Center National Science and Technology Development Agency (NSTDA) Klong Luang Phathum Thani 12120 Thailand

Correction for ‘Comparative study on formic acid sensing properties of flame-made Zn2SnO4 nanoparticles and its parent metal oxides’ by Matawee Punginsang et al., Phys. Chem. Chem. Phys., 2023, 25, 15407–15421, htt...

Correction for ‘Comparative study on formic acid sensing properties of flame-made Zn₂SnO₄ nanoparticles and its parent metal oxides’ by Matawee Punginsang et al., Phys. Chem. Chem. Phys., 2023, 25, 15407–15421, https://***/10.1039/D3CP00845B.

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Piezoelectricity of strain-induced overall water splitting of Ni(OH)2/MoS2 heterostructure

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Journal of materials Chemistry A 2023年第7期11卷 3481-3492页

作者： Le, Kim Tuyen Pham, Nguyet N. T. Liao, Yin-Song Ranjan, Ashok Lin, Hsun-Yen Chen, Po-Han Nguyen, Hoang Lu, Ming Yen Lee, Seung Geol Wu, Jyh Ming Department of Materials Science and Engineering National Tsing Hua University 101 Section 2 Kuang Fu Road Hsinchu300 Taiwan Department of Chemistry University of Science Vietnam National University Ho Chi Minh City Viet Nam School of Chemical Engineering Pusan National University 2 Busandaehak-ro 63 beon-gil Geumjeong-gu Busan46241 Korea Republic of Department of Organic Material Science and Engineering Pusan National University 2 Busandaehak-ro 63 beon-gil Geumjeong-gu Busan46241 Korea Republic of PhD Program in Prospective Functional Materials Industry National Tsing Hua University 101 Section 2 Kuang Fu Road Hsinchu300 Taiwan High Entropy Materials Center National Tsing Hua University 101 Section 2 Kuang Fu Road Hsinchu300 Taiwan Vietnam National University Ho Chi Minh City Linh Trung Ward Thu Duc City Ho Chi Minh City700000 Viet Nam

In this study, we synthesized several active sites of molybdenum disulfide (MoS2) nanoflowers (NFs) decorated with Ni(OH)2 nanoparticles (NPs) to form heterostructures. Our results revealed that Ni(OH)2/MoS2 NF heterostructures caused the splitting of water into hydrogen (H2) and oxygen (O2) gas. The Ni(OH)2/MoS2 NF interface exhibited strain-induced piezoelectric potential (piezopotential) that promoted charge separation, reducing the kinetic barrier in the water splitting process and promoting the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). In high-resolution transmission microscopy images, the measured lattice fringe d spacing was approximately 0.67 nm, which was higher than the reported value. The calculated tensile strain of Ni(OH)2/MoS2 NF heterostructures was approximately 3.5%. The findings based on density-functional theory and using the finite element method indicated that the interfacial piezopotential generated between Ni(OH)2 and MoS2 NFs enhanced charge transfer and electrochemical reactions. To obtain a current density up to 10 mA cm−2, we set the overpotential and Tafel slope of Ni(OH)2/MoS2 NF heterostructures at 155 mV and 62.1 mV dec−1 for the HER and 328 mV and 69.3 mV dec−1 for the OER, respectively. Moreover, a high Faraday efficiency (84.1%) was observed over 48 h, with no significant decline in the HER and OER. © 2023 The Royal Society of Chemistry.

关键词： Molybdenum disulfide

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Improved camptothecin encapsulation and efficacy by environmentally sensitive block copolymer/chitosan/fucoidan nanoparticles for targeting lung cancer cells

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International Journal of Biological Macromolecules 2024年第Part2期277卷 133901页

作者： Don, Trong-Ming Hong, Yu-Ting Jheng, Pei-Ru Chuang, Er-Yuan Huang, Yi-Cheng Department of Chemical and Materials Engineering Tamkang University New Taipei City Taiwan College of Life Sciences Department of Food Science National Taiwan Ocean University Keelung Taiwan Graduate Institute of Biomedical Materials and Tissue Engineering International PhD Program in Biomedical Engineering Taipei Medical University Taipei Taiwan Cell Physiology and Molecular Image Research Center Taipei Medical University–Wan Fang Hospital Taipei Taiwan

In this study, thermo-sensitive poly(N-isopropyl acrylamide) (PNP) was polymerized with pH-sensitive poly(acrylic acid) (PAA) to prepare a PAA-b-PNP block copolymer. Above its cloud point, the block copolymer self-assembled into nanoparticles (NPs), encapsulating the anticancer drug camptothecin (CPT) in situ. Chitosan (CS) and fucoidan (Fu) further modified these NPs, forming Fu-CPT-NPs to enhance biocompatibility, drug encapsulation efficiency (EE), and loading content (LC), crucially facilitating P-selectin targeting of lung cancer cells through a drug delivery system. The EE and LC reached 82 % and 3.5 %, respectively. According to transmission electron microscope observation, these Fu-CPT-NPs had uniform spherical shapes with an average diameter of ca. 250 nm. They could maintain their stability in a pH range of 5.0–6.8. In vitro experimental results revealed that the Fu-CPT-NPs exhibited good biocompatibility and had anticancer activity after encapsulating CPT. It could deliver CPT to cancer cells by targeting P-selectin, effectively increasing cell uptake and inducing cell apoptosis. Animal study results showed that the Fu-CPT-NPs inhibited lung tumor growth by increasing tumor cell apoptosis without causing significant tissue damage related to generating reactive oxygen species in lung cancer cells. This system can effectively improve drug-delivery efficiency and treatment effects and has great potential for treating lung cancer. © 2024 Elsevier B.V.

关键词： Nanoparticles

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Passivation of Perovskite Films Using Ionic Liquids

Passivation of Perovskite Films Using Ionic Liquids

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2022 Advances in science and Engineering Technology International Conferences, ASET 2022

作者： Alashkar, Adnan Ibrahim, Taleb Khamis, Mustafa Hai Alami, Abdul American University of Sharjah Materials Science and Engineering PhD Program Sharjah United Arab Emirates American University of Sharjah Department of Chemical Engineering Sharjah United Arab Emirates American University of Sharjah Department of Biology Chemistry and Enviromental Sciences Sharjah United Arab Emirates University of Sharjah Department of Sustainable and Renewable Energy Engineering Sharjah United Arab Emirates

ISBN: (纸本)9781665418010

In this paper, the carrier recombination, and dynamics of Perovskite Solar Cells (PSC) are investigated. Ionic Liquids (IL) are presented in the bulk perovskite in an attempt to improve the dynamics of the charge transport layer. Time Resolved Photoluminescence (TRPL) is utilized to study the fast electronic decay of the perovskite samples and the influence of the IL on the stability of the perovskite film. The ILs are added to the perovskite in three ratios (5%, 10%, and 20%). The results showed that the presence of the ILs increases the electron lifetime inside the perovskite layer. In addition, 10% IL/perovskite displayed the highest increase of 72% in the lifetime. Where, for higher ratios, the lifetime started deteriorating. © 2022 IEEE.

关键词： Ionic liquids

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An Ultrastable Tetrabenzonaphthalene-Linked conjugated microporous polymer functioning as a high-performance electrode for supercapacitors

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Journal of the Taiwan Institute of Chemical Engineers 2024年 158卷

作者： Samy, Maha Mohamed Mohamed, Mohamed Gamal Sharma, Santosh U Chaganti, Swetha V Lee, Jyh-Tsung Kuo, Shiao-Wei Department of Materials and Optoelectronic Science College of Semiconductor and Advanced Technology Research Center for Functional Polymers and Supramolecular Materials National Sun Yat-Sen University Kaohsiung804 Taiwan Chemistry Department Faculty of Science Assiut University Assiut Egypt International PhD Program for Science National Sun Yat-sen University Kaohsiung80424 Taiwan Department of Chemistry National Sun Yat-Sen University Kaohsiung80424 Taiwan Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung807 Taiwan

Background: Conjugated microporous polymers (CMPs) have been applied widely in several energy storage applications. Triphenylamine derivatives are good electrode materials that can be processed into SC devices because of their high charge mobilities, unique electronic properties, and high redox activity. Methods: We prepared two novel tetrabenzonaphthalene-linked conjugated microporous polymers (TBN-pH CMPs) through [4 + 2] and [4 + 3] Schiff-base condensations of 2,7,10,15-tetra(4-formylphenyl)tetrabenzonaphthalene (TBN-PhCHO) with tetrakis(4-aminophenyl)ethene (TPE-4NH2) and tris(4-aminophenyl)amine (TPA-3NH2), respectively. Fourier transform infrared, and solid-state 13C NMR spectroscopy investigated the structures of the as-prepared CMPs. Significant Findings: These CMPs, had large surface areas and outstanding thermal stability at temperatures of up to 400 °C, making them suitable for use as electrodes in supercapacitor (SC) systems. Indeed, the TBN-TPA CMP–based electrode had high specific capacitances (251 F g − 1 measured at 0.5 A g–1) and capacity retentions (94%, measured after 5000 cycles at 10 A g–1) when tested in three-electrode systems. We attribute the remarkable electrochemical activity and conductivity of the TBN-TPA CMP electrode to its large specific surface area (230 m2 g–1) and chemical structure featuring stacking of the benzene rings of its redox-active triphenylamine moieties. © 2023 Taiwan Institute of Chemical Engineers

关键词： Supercapacitor

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Photoresponse of Thermally Evaporated Copper Oxide-Based Solar Cells 1

Photoresponse of Thermally Evaporated Copper Oxide-Based Sol...

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1st Middle East and North Africa Solar Conference, MENA-SC 2023

作者： Alami, Abdul Hai Ayoub, Mohamad Alashkar, Adnan Alasad, Shamma Mdallal, Ayman Khuri, Siren Aljaghoub, Haya University of Sharjah Sustainable Energy & Power Systems Research Centre Sustainable and Renewable Energy Engineering Department Sharjah United Arab Emirates American University of Sharjah Materials Science and Engineering PhD Program Sharjah United Arab Emirates American University of Sharjah Mechancial Engineering Department Sharjah United Arab Emirates University of Sharjah Sustainable Energy & Power Systems Research Centre Sharjah United Arab Emirates University of Sharjah Industrial Engineering and Engineering Management Department Sharjah United Arab Emirates

ISBN: (纸本)9781665491464

This study reports on the fabrication and characterization of a copper oxide (CuO)-based photoactive cell. Copper was thermally evaporated onto two substrates and post-treated using chemical and thermal treatments to obtain different semiconducting types of CuO. Absorption measurements were conducted to obtain the bandgaps of CuO, which were found to be 1.51 eV and 1.21 eV, for the chemically and thermally treated CuO, respectively. Finally, a chronoamperometry test was conducted to confirm the photoresponse of the cell, which showed a doubling of output current values under light conditions compared to dark conditions. © 2023 IEEE.

关键词： Copper oxides

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Advances in liposomal nanotechnology: from concept to clinics

RSC Pharmaceutics

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RSC Pharmaceutics 2024年第5期1卷 928-948页

作者： Reem M. Senjab Nour AlSawaftah Waad H. Abuwatfa Ghaleb A. Husseini Biomedical Engineering Program College of Engineering American University of Sharjah Sharjah P.O. Box 26666 United Arab Emirates ghusseini@aus.edu Materials Science and Engineering Ph.D. Program College of Arts and Sciences American University of Sharjah Sharjah P.O. Box 26666 United Arab Emirates Department of Chemical and Biological Engineering College of Engineering American University of Sharjah Sharjah P.O. Box 26666 United Arab Emirates Biosciences and Bioengineering PhD Program College of Engineering American University of Sharjah Sharjah P.O. Box 26666 United Arab Emirates

Liposomes, spherical phospholipid vesicles with a unique morphology mimicking that of body cells, have emerged as versatile nanoparticles for drug delivery. Their biocompatibility, low cytotoxicity, targeted delivery, and hydrophobic and hydrophilic characteristics make them stand out over traditional drug delivery systems. Liposomes can be tailored in size, composition, lamellarity, and surface charge, offering a unique level of customization for various applications. Extensive research in liposome technology has led to the development of a wide range of liposomal formulations with enhanced functionalities, such as PEGylated liposomes, ligand-targeted liposomes, and stimuli-responsive liposomes. Beyond their crucial role in cancer treatment, liposomes play a significant role in influenza, COVID-19, cancer, and hepatitis A vaccines. They are also utilized in pain management, fungal treatment, brain targeting, and topical and ocular drug delivery. This review offers insight into the types of liposomes, their composition, preparation methods, characterization methods, and clinical applications. Additionally, it discusses challenges and highlights potential future directions in liposome-based drug delivery.

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Constructing conjugated microporous polymers containing triphenylamine moieties for high-performance capacitive energy storage

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Polymer 2023年 264卷

作者： Samy, Maha Mohamed Gamal Mohamed, Mohamed Sharma, Santosh U. Chaganti, Swetha V. Hassan Mansoure, Tharwat Lee, Jyh-Tsung Chen, Tao Kuo, Shiao-Wei Department of Materials and Optoelectronic Science College of Semiconductor and Advanced Technology Research Center for Functional Polymers and Supramolecular Materials National Sun Yat-Sen University Kaohsiung804 Taiwan Chemistry Department Faculty of Science Assiut University Assiut71515 Egypt International PhD Program for Science National Sun Yat-sen University Kaohsiung80424 Taiwan Department of Chemistry National Sun Yat-Sen University Kaohsiung80424 Taiwan Ningbo Institute of Material Technology and Engineering Chinese Academy of Science Ningbo315201 China Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung807 Taiwan

In this research we developed two triphenylamine (TPA)-linked conjugated microporous polymers (CMPs), TPA-TAB and TPA-TBN, through Suzuki couplings of tris(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)amine (TPA-BO) with the aryl bromides tetrakis(4-bromophenyl)benzidine (TAB-Br4) and 2,7,10,15-tetrabromotetrabenzonaphthalene (TBN-Br4), respectively. These CMPs, which have substantial surface surfaces and outstanding thermal stability, could be employed as electrode materials in supercapacitor (SC) devices. In a three-electrode SC, the TPA-TAB CMP exhibited ultrahigh specific capacitance (684 F g−1 at 0.5 A g−1) and long-term stability, with a capacitance retention of 99.5% after 5000 cycles (at 10 A g−1). Moreover, a two-electrode symmetric SC incorporating TPA-TAB CMP presented a capacitance of 117 F g−1 and a high retention of 98% when subjected to 5000 cycles at 10 A g−1. This exceptional performance resulted from was achieved through the use of redox-active TPA units and a large BET surface area (490 m2 g−1). Accordingly, such TPA-CMPs appear to have promise for use in charge and energy storage applications. © 2022 Elsevier Ltd

关键词： Supercapacitor

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Flake-like structure of SrTiO3 nanoparticles dispersed on graphene oxide: A selective and sensitive electrochemical sensor for determination of chloramphenicol in milk and honey samples

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Food Chemistry 2024年 444卷

作者： Sakaleshpur Kumar, Gagankumar Ballur Prasanna, Sanjay Lokesh Marenahalli, Bhuvan Shadakshari, Sandeep Arehalli Shivamurthy, Santhosh Rajabathar, Jothi Ramalingam Chimatahalli Shanthakumar, Karthik Han, Young-Kyu Department of Chemistry SJCE JSS Science and Technology University Karnataka570006 India Department of Energy and Materials Engineering Dongguk University-Seoul Seoul100-715 Korea Republic of Taipei10608 Taiwan International PhD Program for Biomedical Engineering Taipei Medical University 250 Wuxing St Taipei11031 Taiwan N.M.K.R.V. College for Women's Karnataka 560011 India Department of Chemistry College of Science King Saud University P.O. Box. 2455 Riyadh11451 Saudi Arabia

The use of Chloramphenicol (CAP), a potent antibiotic with broad-spectrum capabilities in food-producing animals has been restricted by the European Union and several other countries due to its severe side effects. Thus, CAP must be detected quickly and sensitively. In this investigation, the preparation of SrTiO3 nanoparticles was carried out utilizing a hydrothermal technique. The as-synthesized strontium titanate was decorated on the graphene oxide (SrTiO3/GO) using an ultrasonication method. An electrochemical sensor was developed by employing a modified electrode consisting of SrTiO3/GO, which can accurately detect CAP in food samples. The synergistic effect of SrTiO3 and GO could improve the peak current response. Remarkably, the SrTiO3/GO-modified glassy carbon electrode has a LOD and sensitivity of 6.08 µM nM and 2.771 µA·μM−1·cm−2, respectively. This modified electrode was evaluated in food samples and had an outstanding reaction with a high percentage of recovery, which makes it a potential electrocatalyst for CAP detection. © 2024 Elsevier Ltd

关键词： Titanium compounds

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