Review
Pharmacology & Pharmacy
Saman Sargazi, E. R. Simge, Sultan Sacide Gelen, Abbas Rahdar, Muhammad Bilal, Rabia Arshad, Narges Ajalli, Muhammad Farhan Ali Khan, Sadanand Pandey
Summary: Recent studies have investigated the usage of nanoparticles (NPs) in treating and diagnosing various diseases, particularly cancer. The primary purpose is to design a specific NPs-based drug delivery system for targeted cell treatment. NPs can be used as agents for photothermal therapy (PTT) and photodynamic therapy (PDT) due to their slow degradation, controlled release, optimum surface functionality, and high optical absorbance. However, titanium dioxide (TiO2) NPs, which possess tremendous photocatalyst activity, have limitations in terms of absorption and potential side effects.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2022)
Article
Biology
Seemab Iqbal, M. Fakhar-e-Alam, K. S. Alimgeer, M. Atif, Atif Hanif, Nafeesah Yaqub, W. A. Farooq, Shafiq Ahmad, Yu-Ming Chu, Muhammad Suleman Rana, Amanullah Fatehmulla, Hijaz Ahmad
Summary: This study highlights the importance of titanium oxide nanostructures blending with gold nanoparticles as novel photosensitizing agents, and further investigates the impact of this combination on cancer cells.
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
(2021)
Article
Nanoscience & Nanotechnology
Yike Hou, Asim Mushtaq, Zhe Tang, Eithne Dempsey, Yuling Wu, Yuguang Lu, Cong Tian, Jabeen Farheen, Xiangdong Kong, M. Zubair Iqbal
Summary: This work reports on the design of Ag decorated TiO2 hybrid nanorods with dual functionalities of enhanced photodynamic therapy and antibacterial activity. The Ag-TiO2 HNRs showed high intracellular ROS production in cancer cells under UV conditions, resulting in cancer cell apoptosis. They also exhibited strong antibacterial activity against Escherichia coli and Staphylococcus aureus.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2022)
Article
Chemistry, Multidisciplinary
Congcong Xing, Linlin Yang, Ren He, Maria Chiara Spadaro, Yu Zhang, Jordi Arbiol, Junshan Li, Bed Poudel, Amin Nozariasbmarz, Wenjie Li, Khak Ho Lim, Yu Liu, Jordi Llorca, Andreu Cabot
Summary: This study aims to investigate the electrochromic performance of defect-engineered brookite titanium dioxide nanorods (TiO2 NRs) with different lengths as potential energy storage materials. The results show that TiO2 NRs with inherent defects exhibit improved electrochromic performance, including enhanced resistance to degradation, shorter response times, and increased coloration efficiency.
Article
Nanoscience & Nanotechnology
Pranjyan Dash, Senthilkumar Thirumurugan, Ching-Li Tseng, Yu-Chien Lin, Sung-Lung Chen, Udesh Dhawan, Ren-Jei Chung
Summary: This study developed dumbbell-shaped nanocomposites consisting of titanium dioxide/gold nanorods coated with mesoporous silica shells. Methotrexate was loaded onto the nanocomposites and upconversion nanoparticles were decorated to enhance the therapeutic effects. In vitro and in vivo experiments demonstrated the synergistic photodynamic therapy, photothermal therapy, and chemotherapy effects of the nanocomposites, making them a promising candidate for cancer treatment using near-infrared light.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Biochemistry & Molecular Biology
Andra Dinache, Simona Nistorescu, Tatiana Tozar, Adriana Smarandache, Mihai Boni, Petronela Prepelita, Angela Staicu
Summary: This study focuses on characterizing the spectral properties of TiO2 nanoparticles functionalized with three different porphyrin derivatives. UV-Vis absorption and FTIR-ATR spectroscopy were used to investigate the porphyrin-TiO2 complexes. The efficiency of singlet oxygen generation, an important factor in photodynamic therapy, was also evaluated. The results demonstrate that the porphyrin complexes with TiO2 exhibit higher singlet oxygen generation efficiency compared to bare porphyrins, making them potential candidates for in vitro photodynamic therapy assays.
Article
Materials Science, Multidisciplinary
Chanagun Wongburapachart, Phuwadej Pornaroontham, Kyusung Kim, Pramoch Rangsunvigit
Summary: Photocatalysis is an eco-friendly technology that can contribute to achieving the Sustainable Development Goals. However, conventional photocatalysts have limitations such as slow kinetics, limited excitation wavelengths, and environmental restrictions. This study focuses on the development of a photo-chargeable photocatalyst that can operate even in the absence of light, and investigates the effects of synthesis conditions on its photocatalytic properties.
Article
Chemistry, Multidisciplinary
Xuefei Zhou, Xiuxiu Wang, Jinxing Li, Xuejun Zhang
Summary: By synthesizing metal phthalocyanines to sensitize TiO2 nanoparticles and nanorods, and preparing four composite photocatalytic materials, the effective photocatalytic degradation of Rhodamine B was achieved. The study found that the loading of metal phthalocyanine during photocatalysis process expanded the material's photoresponse range and enhanced its light absorption performance.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Chemistry, Multidisciplinary
Seyed Naveed Hosseini, Xiaodan Chen, Patrick J. Baesjou, Arnout Imhof, Alfons van Blaaderen
Summary: The study successfully synthesized highly crystalline, organic-solvent-dispersible TiO2 nanorods through a modified nonhydrolytic sol-gel route, with some semi-spherical titania nanocrystals removed. The nanorods were predominantly anatase, while the semi-spherical crystals also contained the TiO2(B) phase.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Chengyu Yang, Yukun Zhu, Daohao Li, Yiming Liu, Chen Guan, Xiaofei Man, Shuchao Zhang, Lixue Zhang, Dongjiang Yang, Yan Xu
Summary: This study developed TiO2@RP NRs as a photosensitizer for the synchronous PDT and PTT treatments for ccRCC and demonstrated their feasibility and effectiveness through in vitro and in vivo experiments. TiO2@RP NRs were shown to efficiently kill ccRCC cells under NIR irradiation while causing minimal damage to normal kidney cells, highlighting a promising photo-driven therapy for kidney cancer.
Article
Chemistry, Multidisciplinary
Tanya Gupta, Samriti, Junghyun Cho, Jai Prakash
Summary: Titanium dioxide (TiO2) is a top semiconductor photocatalyst with the optical band gap and photocatalytic properties that can be further tuned by adjusting the nanostructures. One-dimensional TiO2 nanostructures are of great importance in various fields due to their directional transmission properties resulting from their geometry.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Xiaodan Chen, Seyed Naveed Hosseini, Marijn A. van Huis
Summary: In this study, the transformation of anatase TiO2 nanorods into rock-salt TiO nanoparticles at high temperature was investigated. An intermediate stage during the transformation was identified between 950-1200 degrees C. Understanding the phase and morphology evolution at high temperatures is essential for the functionality of nanocrystals in various applications.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Siyuan Zhang, Zewen Sun, Yue Zhou, Wenshu Chen, Qianhui Wu, Jianhua Sun, Leiming Lang
Summary: Ag nanoparticles significantly enhance the photocatalytic activity of self-organized TiO2 nanotube structures. In this study, novel Ag/TiO2 tube-in-tube fibers were prepared using a simple electrospinning technology and calcination process. As a photocatalyst, the composite efficiently catalyzes the photodegradation of the model organic pollutant, rhodamine B, under visible light irradiation, showing superior photocatalytic activity compared to undoped TiO2 tube-in-tube fibers. This enhancement is attributed to the plasmonic characteristics of Ag nanoparticles, which promote light absorption and charge transfer feasibility. The simple, low-cost, and green fabrication route of the composite provides a novel means for preparing similar materials, holding great promise for wider application in the future.
Article
Chemistry, Physical
Alejandra Romero-Moran, Jose L. Sanchez-Salas, Joel Molina-Reyes
Summary: The study established the influence of the crystalline phase and agglomeration degree of TiO2 nanoparticles on photocatalytic hydroxyl radical formation and bacterial inactivation in TiO2/SiO2 composite coatings. A relationship between hydroxyl radicals' formation and charge carrier transfer mechanism between defect levels in SiO2 and TiO2 embedded nanoparticles was established through a simple spectroscopic method. This correlation complements the lack of mechanisms behind the photocatalytic activity in TiO2/SiO2 composites.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Nanoscience & Nanotechnology
Yukari Yamazaki, Tetsuya Toyonaga, Naoto Doshita, Kohsuke Mori, Yasutaka Kuwahara, Suzuko Yamazaki, Hiromi Yamashita
Summary: Hydrogen spillover can assist in introducing defects in a TiO2 crystal, while crystal facet engineering offers a promising approach to influencing the recombination step of photo-generated electrons and holes. In this study, rutile TiO2 nanorods were synthesized with different aspect ratios and Pt-deposited TiO2-x nanorods were obtained via reduction treatment assisted by hydrogen spillover. The Pt/TNR with a higher aspect ratio reduced at 200 degrees C exhibited the highest activity in photocatalytic H-2 production under visible light irradiation due to the synergistic effect of Ti3+ defects introduction and spatial charge carrier separation induced by crystal facet engineering.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Mathematical & Computational Biology
Mir Sajjad Hashemi, Mohammad Partohaghighi, Hijaz Ahmad
Summary: Fractional derivatives are mathematical instruments used to model real phenomena in science. This study develops models for human liver and hearing loss using three different fractional operators and obtains approximate solutions through numerical techniques.
INTERNATIONAL JOURNAL OF BIOMATHEMATICS
(2023)
Article
Mathematical & Computational Biology
Taye Samuel Faniran, Matthew O. Adewole, Hijaz Ahmad, Farah A. Abdullah
Summary: This study presents a compartmental mathematical model to describe the transmission and spread of tuberculosis (TB) in HIV-HCV co-infected cases. The analysis of the model shows that the disease-free equilibrium solution is globally asymptotically stable if the basic reproduction number R-0 is less than 1. Numerical investigation confirms the existence of a unique endemic equilibrium solution. Additionally, the model is reformulated as an optimal control problem, considering time-dependent controls to minimize the spread of tuberculosis. Numerical simulations and cost-effectiveness analysis demonstrate the effectiveness of vaccination and public health education in reducing the spread of tuberculosis in HIV-HCV co-infected cases.
INTERNATIONAL JOURNAL OF BIOMATHEMATICS
(2023)
Correction
Physics, Multidisciplinary
A. Soleiman, Ahmed E. Abouelregal, Hijaz Ahmad, Phatiphat Thounthong
Article
Mathematics, Applied
Ibrahim Yalcinkaya, Durhasan Turgut Tollu, Alireza Khastan, Hijaz Ahmad, Thongchai Botmart
Summary: This paper investigates the qualitative behavior of a fuzzy difference equation with positive fuzzy numbers and positive integer. Two examples are provided to demonstrate the effectiveness of the obtained results.
Article
Mathematics, Applied
Amar Benkerrouche, Sina Etemad, Mohammed Said Souid, Shahram Rezapour, Hijaz Ahmad, Thongchai Botmart
Summary: This paper studies the existence and uniqueness of solutions to a Caputo variable-order initial value problem in the impulsive settings for the first time. The existence results are proved using two fixed point theorems. The Ulam-Hyers stability of solutions is established for the variable order impulsive initial value problem. Finally, an example is provided to demonstrate the correctness of the results.
Article
Multidisciplinary Sciences
Shiva Jagadeesh, Marpadaga Chenna Krishna Reddy, Nainaru Tarakaramu, Hijaz Ahmad, Sameh Askar, Sherzod Shukhratovich Abdullaev
Summary: A mathematical analysis is conducted on the thermal radiation and heat absorption effects of 3D MHD Williamson nanoliquid motion on a stretching sheet. Convective heat and mass boundary conditions are considered. The study aims to develop heat transfer techniques and highlights the importance of Williamson nanofluids in various applications. The obtained results are compared with previous studies, and the present study is regarded as a significant innovation.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
Imran Siddique, Rubina Adrees, Hijaz Ahmad, Sameh Askar
Summary: This article investigates the influence of magnetohydrodynamics and heat absorption on the time-dependent free convection flow of an incompressible Jeffrey fluid over an infinite, vertically heated plate with homogeneous heat flux. The constitutive equation for heat flow employs the Prabhakar-like fractional derivative. The Laplace transform technique is used to obtain the exact solution for the momentum and thermal profiles. Graphical analysis reveals the impact of flow and fractionalized parameters on the thermal and momentum profiles. A comparison between the ordinary model and the Prabhakar-like fractional model demonstrates that the latter better captures the memory effect of the thermal and momentum fields.
SCIENTIFIC REPORTS
(2023)
Article
Mathematics, Applied
Hasan Kara, Hueseyin Budak, Sina Etemad, Shahram Rezapour, Hijaz Ahmad, Mohammed K. A. Kaabar
Summary: This paper derives equalities and presents new trapezoid-type and midpoint-type inequalities via twice differentiable functions and conformable fractional integrals. These new inequalities are obtained by utilizing the convexity property, power mean inequality, and Holder's inequality. The results show that this new family of inequalities generalizes previous research studies and also obtains other relevant results.
JOURNAL OF FUNCTION SPACES
(2023)
Article
Physics, Applied
Muhammad Farooq, Hijaz Ahmad, Dilber Uzun Ozsahin, Alamgeer Khan, Rashid Nawaz, Bandar Almohsen
Summary: This paper investigates the Poiseuille flow of non-isothermal couple stress fluid of Reynolds model between two heated parallel inclined plates using the AHPM and OHAM-DJ methods. The approximate solutions for various flow properties are obtained and compared, showing excellent resemblance between the two methods.
MODERN PHYSICS LETTERS B
(2024)
Article
Multidisciplinary Sciences
Tariq Munir, Arslan Mahmood, Shafaq Fatima, Amjad Sohail, Muhammad Fakhar-e-Alam, Muhammad Atif, Noman Rafaqat
Summary: Nanostructured materials play a crucial role in electronic applications and device performance enhancement. Cobalt sulfide, as a transition metal sulfide, has attracted considerable interest in research. In this study, (Al and Zn) doped cobalt sulfide nanoparticles were successfully fabricated using a facile co-precipitation method, and their structural, optical, and electrical properties were analyzed.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Banat Gul, Muhammad Salman Khan, Muhammad Aasim, Ahmad A. Ifseisi, Gulzar Khan, Hijaz Ahmad
Summary: In this study, novel types of lead-free halide perovskites were characterized for their electronic, optical, and thermoelectric properties. The results showed that these materials possess an indirect band gap semiconducting nature, with CsSnI3 having a smaller band gap and higher energy efficiency. The linear optical properties were also calculated, indicating possible applications in optoelectronic devices.
Article
Materials Science, Multidisciplinary
Banat Gul, Muhammad Salman Khan, Bashir Ahmad, Mostafizur Rahaman, Paride O. Lolika, Guenez Wafa, Hijaz Ahmad
Summary: Using density functional theory calculations, the electronic, structural, optical, and thermoelectric properties of novel tungsten-based dichalcogenide materials were investigated. The calculated optical constants and thermoelectric parameters indicate the potential applications of these materials in optoelectronic and thermoelectric devices.
MATERIALS ADVANCES
(2023)
Article
Mathematics, Applied
Nadia Khan, Sehrish Ayaz, Imran Siddique, Hijaz Ahmad, Sameh Askar, Rana Muhammad Zulqarnain
Summary: Optimization techniques are used to find the best combination of inputs and parameters for the most efficient solution. Aggregation operators play a crucial role in discerning between two distributions and extracting information. This research aims to extend the interaction AOs to IVPFHSS and develop operational laws for decision-making. The proposed model shows more effectiveness and consistency in handling inaccurate data based on IVPFHSS.
Article
Thermodynamics
Fuzhang Wang, Niaz Ali Shah, Imtiaz Ahmad, Hijaz Ahmad, Muhammad Kamran Alam, Phatiphat Thounthong
Summary: In this article, the analytical solution of Burgers' equations is approximated using the multistage homotopy asymptotic method, a commonly used technique in modern physics and fluid mechanics. The proposed algorithm is an accurate and simple semi-analytic tool for solving non-linear problems. The research evaluates the efficiency and accuracy of the method for solving non-linear partial differential equations over a large time span, and numerical comparison with the variational iteration method demonstrates the efficacy and accuracy of the proposed method.
Article
Physics, Multidisciplinary
Asmat Ullah Yahya, Imran Siddique, Nadeem Salamat, Hijaz Ahmad, Muhammad Rafiq, Sameh Askar, Sohaib Abdal
Summary: This research focuses on the enhancement of thermal distribution in Williamson hybrid nanofluid flow. Nichrome and TC4 nanoparticles are uniformly dispersed in water as the base fluid. An elongating surface is used to observe the flow and thermal transition phenomenon in the presence of magnetic field and heat radiation. The boundary condition is governed by suction and slip. The solution involves transforming the boundary-value problem into ordinary differential form and using Matlab code with the Runge-Kutta procedure to compute velocity and temperature profiles under the influence of controlling factors. Comparative computations show that the heat for the hybrid nanofluid case is greater than that for the nanofluids, and an enhancement in thermal distribution is observed with an increasing concentration of Nichrome.
