Article
Spectroscopy
Junwei Hou, Tengze Xu, Yanbin Ning, Bingxuan Huang, Ye Yang, Qingyao Wang
Summary: Ti3+ self-doped TiO2-x nanotube arrays were prepared and characterized, showing high visible light response, photocurrent, and photoelectrocatalytic activities. The improved performance was attributed to the synergistic effect of narrowed energy gap and enhanced electron transportation, providing new opportunities for high-performance solar cells and photocatalysts.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Environmental Sciences
Yen -Ping Peng, En-Xian Zhang, Chia -Hung Chen, Wu -Xing Chen
Summary: In this study, iron was deposited onto titanium dioxide nanotube arrays (TNAs) using the impregnation method to enhance its photocatalytic ability. The results showed that the iron modification successfully attached iron nanoparticles evenly to the TNAs, resulting in improved degradation of trichloroethylene (TCE) in a photoelectrochemical (PEC) system. The Fe-TNAs exhibited red-shifted absorption wavelength and reduced recombination of photo-generated electron-hole pairs, leading to enhanced TCE degradation.
Article
Chemistry, Physical
Bowen Gao, Mingxuan Sun, Wen Ding, Zhipeng Ding, Wenzhu Liu
Summary: A series of gamma-graphyne/TiO2 nanotube array heterostructures were synthesized by a simple and environmentally friendly method. The modified heterostructures showed improved performance in photoelectrocatalytic degradation and nitrogen fixation, indicating great potential for applications in photoelectrochemical and photoelectrocatalytic processes.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Electrochemistry
Sanghyeon Moon, Santosh S. Patil, Sangwoo Yu, Wonjoo Lee, Kiyoung Lee
Summary: The feasibility of electrochemical detection of 2,4,6-trinitrotoluene (2,4,6-TNT) using TiO2 nanotubes synthesized through electrochemical anodization of Ti was explored. The study found that the anodic TiO2 nanotubes exhibited good electrochemical sensing properties and could distinguish different compounds based on reduction peaks. Further research is suggested to enhance the efficacy of TiO2 nanotube arrays for the electrochemical reduction of explosive compounds by introducing metal dopants, quantum dots, or vacancy engineering.
ELECTROCHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Zhong-Hang Xing, Xiao-He Liu, Qing-Yun Chen, Yun-Hai Wang
Summary: Efficient and durable NiFe-OOH/TiO2 NTs photoelectrodes were prepared by electrodeposition, demonstrating admirable stability for water oxidation and selective oxidation of benzyl alcohol.
JOURNAL OF NANOPARTICLE RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Na Wang, Renrong Zheng, Jiang Chen, Zan Ding, Haisheng San, Shaoda Zhang
Summary: This study presents a self-driven electrochemical ultraviolet photodetector (EUVPD) using defect-engineered TiO2 nanotube arrays modified with single-walled carbon nanotubes (SWCNTs) to enhance photoelectric performance. The EUVPDs based on Ar-annealed TNAs modified with 0.1 mg/mL of SWCNTs exhibited higher responsivity, higher on/off current ratio, and faster response time compared to unmodified and air-annealed ones. The performance enhancement is attributed to the efficient separation and transport of photoexcited carriers through the electrochemical redox reaction in the SWCNTs network anchored on the defect-engineered TNAs/electrolyte heterojunction nanostructure.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2022)
Article
Materials Science, Coatings & Films
Junling Qin, Zhiguang Cao, Hui Li, Zixue Su
Summary: TiO2 nanotubes with a diameter down to around 6 nm were successfully fabricated in ammonium fluoride-containing ethylene glycol electrolyte through a one-step anodic oxidation method. By systematically studying the influences of various factors, the growth mechanism of TiO2 nanotubes with ultra-small pore diameter and cell size was revealed.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Physical
Nikolay A. Zos'ko, Aleksandr S. Aleksandrovsky, Tatyana A. Kenova, Marina A. Gerasimova, Nikolay G. Maksimov, Oxana P. Taran
Summary: This study proposes a facile and eco-friendly method of activating anodic TiO2 nanotubes (TNTs) using cyclic voltammetry (CV). The photoelectrochemical properties of CV-activated TNTs are compared with those of non-activated TNTs and TNTs activated by hydrogen-thermal reduction. The results show that CV-Na2SO4 activated TNTs demonstrate significantly improved photocurrent density and enhanced photoactivity compared to the other methods. The redistribution of defects induced by activation explains the increased photoelectrochemical activity of TiO2-based anodes.
Article
Electrochemistry
Xin Zhou, Nikita Denisov, Gihoon Cha, Imgon Hwang, Patrik Schmuki
Summary: This study compares the photoresponse of vertically erected single crystal anatase layers with that of TiO2 nanotube layers, showing that the de-fluorinated VE-anatase layers exhibit significantly higher photocurrents due to faster electron transport in these single crystal electrodes.
ELECTROCHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Muhammad Bilal Hanif, Guru Karthikeyan Thirunavukkarasu, Viktoriia Liapun, Hryhorii Makarov, Maros Gregor, Tomas Roch, Tomas Plecenik, Karol Hensel, Marcel Sihor, Olivier Monfort, Martin Motola
Summary: This study presents an environmentally friendly synthesis of TiO2 nanotube (TNT) layers and demonstrates their photocatalytic performance and HO radical production rate. The best preparation condition was using AgNO3 as the electrolyte, which resulted in TNT layers with suitable morphological features and crystal structure.
Article
Chemistry, Physical
Changwan Zhuang, Zhiyuan Song, Zhuobin Yu, Caili Zhang, Jian Wang, Yiming Liu, Qiang Zhao
Summary: This study presents a novel approach of constructing a-TNTAs/Ni2P composite photo-anode to enhance the efficiency of oxygen evolution, providing a simple and efficient method to promote the OER performance of optical semiconductors.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Shi -Wei Lin, Mei-Hong Tong, Yan-Xin Chen, Rui Chen, Hai-Peng Zhao, Xia Jiang, Kai Yang, Can-Zhong Lu
Summary: Composite of rare earth oxides with TiO2 nanotube arrays effectively modifies the PEC behavior of TiO2. A CeO2/TiO2 heterojunction was prepared by loading CeO2 nanoparticles on anodized TiO2 nanotube arrays, demonstrating high photocurrent density and hydrogen evolution rate.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ming Meng, Yamin Feng, Chunyang Li, Zhixing Gan, Honglei Yuan, Honghui Zhang
Summary: Black 3D-TiO2 nanotube arrays were successfully fabricated on titanium meshes using an electrochemical reduction method. The optimized arrays showed a maximal photocurrent density of 1.6 mA/cm(2) and a Faradic efficiency of 100%, four times higher than that of pristine 3D-TiO2 NTAs. The improved water splitting activity is attributed to the introduction of oxygen vacancies, which shrink the bandgap and enhance visible light utilization.
Article
Engineering, Electrical & Electronic
Asmaa Kadim Ayal, Ahlam Mohammed Farhan, Araa Mebdir Holi, Asla Abdullah Al-Zahrani, Ying-Chin Lim
Summary: The influence of manganese concentration on the deposit of Mn nanoparticles on CdS nanoparticles as a sensitizing coat in photoelectrochemical applications was investigated. The successful incorporation of Mn nanoparticles within CdS nanoparticles and TiO2 nanotubes was achieved by diverse characterization techniques. The optimal combination was found to be 7 mM of Mn deposited onto CdS/TiO2 nanotube, which improved the photoelectrochemical performance by increasing absorption in the visible region.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Mei-Hong Tong, Tian-Ming Wang, Shi-Wei Lin, Rui Chen, Xia Jiang, Yan-Xin Chen, Can-Zhong Lu
Summary: TiO2 is widely used as a photocatalyst for water splitting due to its high activity, low cost, abundance, safety, and stability. However, its further utilization is limited by its wide band gap and rapid recombination speed. In this study, ultra-thin carbon-doped TiO2 nanotube arrays were fabricated, which exhibited high photoelectrochemical activity and significantly narrowed band gaps and decreased charge resistance. The results suggest that ultra-thin carbon doping in TiO2 nanotube arrays can optimize photocatalysts for PEC water splitting.
APPLIED SURFACE SCIENCE
(2023)
Review
Chemistry, Analytical
Siti nor Hidayah Arifin, Radin Mohamed, Adel Al-Gheethi, Chin Wei Lai, G. Yashni
Summary: This article reviews the potential of using TiO2 nanotubes for photocatalytic degradation of TCC and TCS in greywater. The results show that TiO2 nanotubes have high efficiency in degrading TCC and TCS, with removal rates ranging from 33% to 99% for TCC and 1.73% to 90% for TCS. Moreover, photocatalytic degradation of TCC and TCS has led to the production of nonhazardous photoproducts.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Environmental Sciences
Siti Nor Hidayah Arifin, Radin Maya Saphira Radin Mohamed, Adel Al-Gheethi, Chin Wei Lai, Yashni Gopalakrishnan, Nur Diyana Hairuddin, Dai-Viet Vo
Summary: This study investigated the degradation of triclocarban (TCC) in aqueous solution using a modified zeolite/TiO2 composite synthesized through electrochemical anodization. It was found that the reaction rate was significantly high at pH 11, with a loading size of 0.75 cm(2) and an initial TCC concentration of 5 ppm. Furthermore, high-performance liquid chromatography analysis revealed the presence of eleven intermediate products during the photocatalytic degradation of TCC.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Multidisciplinary Sciences
Farrokhfar Valizadeh Harzand, Seyyed Navid Mousavi Nejad, Aziz Babapoor, Seyyed Mojtaba Mousavi, Seyyed Alireza Hashemi, Ahmad Gholami, Wei-Hung Chiang, Maria Giovanna Buonomenna, Chin Wei Lai
Summary: Metal-organic frameworks (MOFs) are porous crystalline materials composed of metal and organic material, with properties such as tunability, large surface area, and high porosity. They have various applications in environmental protection, biosensors, regenerative medicine, medical engineering, cell therapy, catalysts, and drug delivery. MOF-based asymmetric membranes improve stability and specificity, while conjugated membranes increase the area of functional groups, making them attractive for drug and biosensor fabrication. MOF-assisted membranes provide a platform with different properties and characteristics for biomedical applications. The latest version of MOF materials/membranes has potential applications in medical engineering, cell therapy, drug delivery, and regenerative medicine.
Review
Chemistry, Physical
Zahra Pouramini, Seyyed Mojtaba Mousavi, Aziz Babapoor, Seyyed Alireza Hashemi, Chin Wei Lai, Yousef Mazaheri, Wei-Hung Chiang
Summary: The use of antibiotics and dyes has caused severe water pollution and health risks, necessitating their elimination from water sources. Adsorption and photodegradation are economical, simple, and reusable methods for removing harmful water contaminants. Metal-organic frameworks (MOFs), such as ZIF-8 and ZIF-67, are effective adsorbents and photocatalysts due to their high porosity, adjustability, and crystal structure. This article reviews the design and synthesis methods of ZIF-8 and ZIF-67 composites and discusses their role as adsorbents and photocatalysts in wastewater pollution removal, aiming to provide insights for the development of highly effective ZIF-8/67-based materials.
Article
Engineering, Environmental
G. Ambarasan Govindasamy, Rabiatul Basria S. M. N. Mydin, Nasrin K. Ramtan Gadaime, Srimala Sreekantan
Summary: Transformation of plain Chitosan to antibacterial polymer nanocomposite with embedment of Quercetin-ZnO/CuO through green synthesis approach showed promising outcomes in wound healing management. The ZnO/CuO-Cs-1wt.% exhibited high cell viability, biodegradability, enhanced cell migration and wound closure. The in vivo excisional open wound studies in rats further supported the effectiveness of ZnO/CuO-Cs-1wt.% in wound recovery.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Review
Chemistry, Physical
Mojtaba Binazadeh, Jamal Rasouli, Samad Sabbaghi, Seyyed Mojtaba Mousavi, Seyyed Alireza Hashemi, Chin Wei Lai
Summary: Environmental pollution is a global issue, and strategies are needed to remove organic contaminants from water supplies. Photocatalytic membrane reactors (PMRs) have emerged as an efficient and cost-effective solution, with the ability to effectively remove contaminants while minimizing environmental impact. This study investigates the working and fouling mechanisms in PMRs, explores the interplay between fouling and photocatalytic activity, and highlights the significance of photocatalysis in membrane fouling mechanisms.
Article
Chemistry, Analytical
Masoomeh Yari Kalashgrani, Aziz Babapoor, Seyyed Mojtaba Mousavi, Solmaz Feizpoor, Seyyed Alireza Hashemi, Mojtaba Binazadeh, Wei-Hung Chiang, Chin Wei Lai
Summary: The performance of IRMOF-3 for removing naphthalene from aqueous media is evaluated for the first time in this study. IRMOF-3 shows high adsorption capacity for naphthalene removal, with an optimum removal efficiency of 80.96% at specific conditions. The results demonstrate that IRMOF-3 is an effective adsorbent for naphthalene removal from wastewater.
Article
Engineering, Chemical
Amna Jwad Kadem, Yin Xin Teo, Swee-Yong Pung, Srimala Sreekantan, Sivakumar Ramakrishnan
Summary: This study investigates the yellowing discoloration of LEDs caused by TiO2 particle degradation in encapsulants. Mn particles were coupled with TiO2 particles using photo-reduction to mitigate the negative effects of TiO2 particles on LED lifespan and chromaticity change. The optimal parameters for Mn-TiO2 coupling were determined, and the resulting particles showed superior dispersibility and minimal agglomeration. The Mn-TiO2 particles exhibited the lowest photodegradation rate and highest photodegradation efficiency among the tested particles, making them suitable fillers in LED encapsulants.
BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS
(2023)
Article
Chemistry, Physical
Magdeline Tze Leng Lai, Kian Mun Lee, Thomas Chung Kuang Yang, Chin Wei Lai, Chia-Yun Chen, Mohd Rafie Johan, Joon Ching Juan
Summary: The construction of a p-n heterojunction photocatalyst successfully overcomes the low photo-catalytic activity caused by rapid charge recombination and limited photo-response range. In this study, an interlayer of expanded MoS2 coupled with Bi2WO6 (BW-IEM) photocatalyst was synthesized, achieving a Methylene Blue (MB) removal rate of up to 97% (5.18 x10-2 min-1) under the irradiation of low power 1W LED white light. The outstanding photocatalytic performance of the p-n heterojunctions BW-IEM photocatalyst is attributed to the enhancement of light harvesting, improvement in the separation of charge carriers, and coexistence of oxygen vacancy. The main reactive oxygen species (ROS) responsible for the photo-degradation of MB were center dot Oz radicals and center dot OH. This work provides a new strategy for the potential IEM photocatalyst as a matrix in a p-n heterojunction composite.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Polymer Science
Jin Kwei Koh, Chin Wei Lai, Mohd Rafie Johan, Sin Seng Gan, Wei Wei Chua
Summary: This study investigates the effects of silica on polyacrylamide (PAM) using comprehensive rheological data. Modified PAM shows distinct chemical structures compared to bare PAM, but both are hydrophilic fluids. The rheological performance of all modified PAM shows an undulated trend for all concentrations of silica and selected temperatures, but all modified PAM perform better than bare PAM. Therefore, a formulation of 0.5 wt% silica is promising for PAM modification, even simulating the performance of bored pile drilling. In terms of thermal stability, the rheological performance of bare PAM and modified PAM shows better results at 60 and 40°C, respectively.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Sina Yaghoubi, Aziz Babapoor, Sayyed Mojtaba Mousavi, Seyyed Alireza Hashemi, Vahid Rahmanian, Ahmad Gholami, Navid Omidifar, Mojtaba Binazadeh, Fatemeh Fallahi Nezhad, Yousef Mazaheri, Wei-Hung Chiang, Chin Wei Lai
Summary: Metal-organic framework (MOF) membranes, constructed with organic ligands and metal ions or clusters, have wide applications in biomedicine. However, there are still fundamental gaps in the studies on MOF membranes.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Review
Chemistry, Physical
Seyyed Mojtaba Mousavi, Seyyed Alireza Hashemi, Fatemeh Fallahi Nezhad, Mojtaba Binazadeh, Milad Dehdashtijahromi, Navid Omidifar, Yasamin Ghahramani, Chin Wei Lai, Wei-Hung Chiang, Ahmad Gholami
Summary: Metal-organic frameworks (MOFs) have shown great promise as carriers for drug delivery in various biological applications. Recent advancements in hybrid nanostructures have led to the development of innovative MOF-loaded nanocomposites with highly porous structures and low toxicity. This review study focuses on the use of MOF materials in cancer treatment, imaging, and antibacterial effects, particularly in oral cancer cells. It highlights the importance of accurately designing and producing anticancer and antibacterial agents to minimize side effects and maximize effectiveness, as well as the need for thorough testing of new anticancer drugs for efficacy and safety.
Review
Energy & Fuels
Shakeel Ahmed, Priynka Sharma, Satyaranjan Bairagi, Nelson Pynadathu Rumjit, Shivani Garg, Akbar Ali, Chin Wei Lai, Seyyed Mojtaba Mousavi, Seyyed Alireza Hashemi, Chaudhary Mustansar Hussain
Summary: Energy depository devices control energy utilization in various applications and the selection of materials for batteries and supercapacitors is crucial for enhancing energy storage capability. Traditional materials have environmental issues, leading to a switch towards eco-friendly biobased polymers. These polymers show great potential as energy repository dielectric layers in high-performing batteries and supercapacitors.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Pharmacology & Pharmacy
Wan Nuramiera Faznie Wan Eddis Effendy, Rabiatul Basria S. M. N. Mydin, Amirah Mohd Gazzali, Srimala Sreekantan
Summary: This study investigated the use of titania nanotube arrays (TNAs) for localised cisplatin (CDDP) treatment of nasopharyngeal carcinoma (NPC) cells. The results showed that the CDDP-loaded TNA nanosystem significantly inhibited NPC cell growth and caused cellular damage and shrinkage.
ADVANCED PHARMACEUTICAL BULLETIN
(2023)
Article
Nanoscience & Nanotechnology
Norhan Hussein, Rabiatul Basria S. M. N. Mydin, Wan Nuramiera Faznie Wan Eddis Effendy, Amirah Mohd Gazzali, Khairul Arifah Saharudin, Srimala Sreekantan
Summary: This study investigates the interaction of neuron-like SH-SY5Y cells on Titania nanotube arrays (TNA) surface in a nutrient-rich environment. The results show that FBS-loaded TNA exhibits zero-order FBS release and enhances the adhesion and proliferation of SH-SY5Y cells. The findings reveal the potential of TNA nano-topology in delivering FBS to neuronal cell lines and improving cellular proliferation activity.
INTERNATIONAL NANO LETTERS
(2023)
