Article
Chemistry, Physical
Rafal Chodun, Marlena Dypa, Bartosz Wicher, Katarzyna Nowakowska - Langier, Sebastian Okrasa, Roman Minikayev, Krzysztof Zdunek
Summary: This study investigated a Gas Injection Magnetron Sputtering technique for target temperature control by using various frequencies of plasma pulse generation to limit heat dissipation. The results showed that target temperature did not affect the chemical and phase composition of coatings, but the thickness of fabricated coatings increased in hot sputtering processes.
APPLIED SURFACE SCIENCE
(2022)
Article
Energy & Fuels
Nonjabulo P. D. Ngidi, Edigar Muchuweni, Vincent O. Nyamori
Summary: This study compared the photoanode performance of boron- or nitrogen-doped reduced graphene oxide (B- or N-rGO) nanocomposites integrated with TiO2. N-rGO-TiO2 exhibited the best performance, demonstrating enhanced electron transportation and collection rates. Utilizing N-rGO-TiO2 as the photoanode material can improve the efficiency of DSSCs.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Vasiliy Pelenovich, Huidong Liu, Xiaomei Zeng, Yan Liu, Kang Liu, Bing Yang
Summary: A new approach to deposit graded solar selective absorbers using non-equilibrium reactive RF magnetron sputtering has been proposed, demonstrating promising results. The method involves a relaxation process of target poisoning in a reactive O2/Ar atmosphere to achieve gradient composition, with the potential to adjust thickness and element distribution profile. This method offers simplicity and high production yield compared to existing methods.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Materials Science, Multidisciplinary
Muhammad Norhaffis Mustafa, Nor Alwani Azhari, Yusran Sulaiman
Summary: In this study, a compact layer of reduced graphene oxide-titanium dioxide (rGO-TiO2) was prepared by one-step electrodeposition, which effectively suppressed dark current and improved the performance of dye-sensitized solar cells. The incorporation of rGO-TiO2 compact layer increased the electron lifetime and charge collection efficiency, demonstrating its potential for enhancing DSSC performance.
Article
Chemistry, Multidisciplinary
Grzegorz Wisz, Paulina Sawicka-Chudy, Maciej Sibinski, Dariusz Ploch, Mariusz Bester, Marian Cholewa, Janusz Wozny, Rostyslav Yavorskyi, Lyubomyr Nykyruy, Marta Ruszala
Summary: In this study, titanium dioxide/copper oxide thin-film solar cells were prepared using the reactive direct-current magnetron sputtering technique. The influence of the deposition time of the top Cu contact layer on the structural and electrical properties of photovoltaic devices was analyzed. The structural and morphological characterization of the TiO2/CuO/Cu2O solar cells was fully studied using X-ray diffraction (XRD), scanning electron microscopy (SEM), and current-voltage (I-V) characteristics.
Article
Chemistry, Physical
Matthieu Grao, James Redfern, Peter J. Kelly, Marina Ratova
Summary: The study investigated the composite photocatalyst Bi12TiO20/Bi4Ti3O12 as an alternative to titanium dioxide, utilizing pulsed DC reactive magnetron co-sputtering to produce polycrystalline thin films. Results showed considerably higher efficiency of the composite photocatalyst compared to TiO2, with performance increasing over repeated usage, attributed to the presence of oxygen vacancies and longer lifetimes of photogenerated species.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Xiaowei Fan, Xuguo Huai, Jie Wang, Li-Chao Jing, Tao Wang, Juncheng Liu, Hong-Zhang Geng
Summary: A novel and facile method for reducing graphene oxide (GO) film using electron transfer and nascent hydrogen between aluminum (Al) film and hydrochloric acid (HCl) solution was reported. The reduction process only takes 5 minutes, significantly shorter than other chemical methods, and produces graphene film with improved properties.
Article
Engineering, Chemical
Le Van Cuong, Dang Lam Tuan Cuong, Le Tran Trung Nghia, Le Khac Hung, Nguyen Thai Hoang, Ly Tan Nhiem, Pham Trong Liem Chau, Mai Thanh Phong, Nguyen Huu Hieu
Summary: In this study, a TiO2/rGO composite material was synthesized through the co-precipitation method, and it was found that the choice of reducing agents had a significant impact on the performance of the material. By using the appropriate reducing agents, the band-gap energy of the photoanode material was narrowed and the efficiency of dye-sensitized solar cells (DSSCs) was enhanced. The findings of this research are expected to contribute to the optimization of TiO2/rGO composite synthesis and the commercial application of DSSCs.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Energy & Fuels
Jung-Chuan Chou, Jun-Xiang Chang, Po-Hui Yang, Ruei-Hong Syu, Chih-Hsien Lai, Po-Yu Kuo, Yu-Hsun Nien, Yu-Che Lin, Po-Feng Chen, Shang-Wen Zhuang
Summary: The photovoltaic performance of dye-sensitized solar cells was investigated under different light densities, and it was found that the introduction of titanium tetrachloride treatment and reduced graphene oxide into the photoanode effectively improved the photovoltaic efficiency.
IEEE JOURNAL OF PHOTOVOLTAICS
(2023)
Article
Engineering, Electrical & Electronic
Yu-Hsun Nien, Hui-Hsuan Hsu, Zhen-Rong Yong, Geng-Ming Hu, Huang-Hua Chen, Manjunath Rangasamy, Jung-Chuan Chou, Po-Yu Kuo, Chih-Hsien Lai, Cheng-Chu Ko, Jun-Xiang Chang
Summary: This study synthesized titanium dioxide nanofibers doped with ZrO2 and rGO to modify the photoanode of DSSCs, improving the photovoltaic performance. With decreasing light intensity, DSSCs showed an upward trend in photovoltaic performance, reaching a peak photovoltaic conversion efficiency of 9.12%. The enhancement in photovoltaic conversion efficiency was attributed to reduced electron recombination and improved compatibility with the dye N719 under low light intensities.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Physics, Applied
Kao-Wei Min, Ming-Ta Yu, Chi-Ting Ho, Pin-Ru Chen, Jenn-Kai Tsai, Tian-Chiuan Wu, Tung-Lung Wu
Summary: In this research, the doctor blade coating method was used to prepare dye-sensitized solar cells (DSSCs) and dope the original titanium dioxide (TiO2, P25) photoanode (PA) with single-layer graphene (G), graphene quantum dots (GQDs), and gold (Au) nanoparticles. Doping with G, GQDs, and Au effectively increased the short-circuit current density (J(sc)), conversion efficiency (eta), and decreased the internal structure impedance (R-k) of DSSCs. The photoanode of the DSSC effectively activated the photogenerated electrons in the film by doping single-layer graphene, and TiO2 captured its electrons through graphene, resulting in improved efficiency of DSSCs.
MODERN PHYSICS LETTERS B
(2022)
Article
Chemistry, Physical
Simiao Sha, Hui Lu, Shaolin Yang, Tong Li, Jiandong Wu, Jinfu Ma, Kang Wang, Chunping Hou, Zhilin Sheng, Yingchun Li
Summary: The paper discusses the use of zinc oxide-reduced graphene oxide composite photoanodes to enhance the photoelectric conversion efficiency of dye-sensitized solar cells. By comparing the performance of cells under different deposition conditions, it was found that the best results were achieved under specific conditions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Materials Science, Multidisciplinary
Cuong Lam Tuan Dang, Cuong Van Le, Nghia Tran Trung Le, My Thi Tra Nguyen, Diep Chau Tran, Khang Tan Pham, Hoang Thai Nguyen, Chau Trong Liem Pham, Nam Minh Hoang, Phong Thanh Mai, Hieu Huu Nguyen
Summary: The study investigated the preparation and characterization of TiO2/rGO nanocomposites and their application in fabricating photoanodes for DSSCs. The optimal rGO weight percentage of 0.6% in the TiO2/rGO nanocomposite material resulted in significantly improved short-circuit current density and energy conversion efficiency compared to pristine TiO2 material. The experiment demonstrated the efficiency of the hydrothermal co-precipitation method in producing well-defined TiO2 nanoparticles on rGO sheets, suggesting the promising potential of eco-friendly TiO2/rGO nanocomposites for DSSC commercialization.
Article
Materials Science, Multidisciplinary
Dang Lam Tuan Cuong, Le Van Cuong, Le Tran Trung Nghia, Dinh Ngoc Trinh, Nguyen Thi Thuy Linh, Nguyen Duy Hai, Pham Trong Liem Chau, Nguyen Thai Hoang, Mai Thanh Phong, Nguyen Huu Hieu
Summary: In this study, titanium dioxide/reduced graphene oxide (TiO2/rGO-TG) nanocomposite was successfully synthesized and used for the fabrication of photoanode in dye-sensitized solar cells (DSSCs). The optimum material for fabricating photoanode in DSSCs was found to be the sample with 1.0 wt.% rGO under the ultrasonic power of 720 W, which achieved a power conversion efficiency of 6.37%. Furthermore, DSSCs with the presence of rGO exhibited better stability compared to DSSCs fabricated from commercial TiO2.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Chemistry, Physical
Xiaomei Zeng, Vasiliy Pelenovich, D. Neena, Chang Xu, Xiangyu Zhang, Alexander Pogrebnjak, Bing Yang, Sheng Liu
Summary: This paper evaluates the thermal stability of high-entropy AlCrNbSiTi-based selective solar absorbers (SSAs) in air and vacuum medium. The SSAs were prepared using a non-equilibrium reactive RF magnetron sputtering method. The stability of the SSAs was evaluated using different elemental compositions. The results show that the AlCrNbSiTi target with an element ratio of 3:2:1:1:2 exhibits the highest stability after heating.
JOURNAL OF ALLOYS AND COMPOUNDS
(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
Chemistry, Physical
Dien-Thien To, Joon Ching Juan, Meng-Hsuan Tsai, Chia-Hsin Wang, Chih-Wen Pao, Chi-Liang Chen, Yu-Chuan Lin
Summary: FeCx catalysts were synthesized by co-pyrolyzing iron nitrate with various CN sources. The Fe-d-C3N4-(0.3)-Py catalyst exhibited the highest CO2 conversion, olefin yield, and olefin STY, attributed to its high surface FeCx concentration. A correlation between surface FeCx and hydrocarbon/olefin STY was established.
CATALYSIS SURVEYS FROM ASIA
(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
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
Fisheries
Shauna L. Mahajan, Estradivari, Lenice Ojwang, Gabby N. Ahmadia
Summary: Co-designing research is recognized as a method to advance equitable and inclusive research with real-world impact. However, challenges can arise in the co-design process. Through examples, we discuss the themes of funding, research culture, diverse interests, authorship norms, and inclusion balance, highlighting both successes and failures. Continuous learning and adaptation are key to creating collaborative, inclusive, and impactful research through co-designing efforts.
ICES JOURNAL OF MARINE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Chiu Ling Ong, Yew Chong Lai, Thorsten Heidelberg, Wai Kit Tang, Vannajan Sanghiran Lee, Nader Ghaffari Khaligh, Joon Ching Juan
Summary: In this study, ashless and non-corrosive dimercaptobenzothiadiazole derivatives (BBST and BOST) were synthesized and evaluated. BBST exhibited superior performance in terms of extreme pressure and anti-wear properties, surpassing the conventional additives MCCP and ZDDP.
