Article
Energy & Fuels
Yanli Qi, Hongshun Zhao, Yuhan Wu, Yurong Ren
Summary: The application of cool materials effectively mitigates heat island effect and slows down global warming by saving energy. The non-white appearance highlights their potential to address architectural issues and reduce dazzling risk.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Construction & Building Technology
Huangjuan Liu, Fajun Wang, Sheng Lei, Junfei Ou, Wen Li
Summary: In this study, a colorful superhydrophobic coating with high solar reflectivity was successfully prepared, exhibiting excellent resistance to pollution and corrosion, while meeting the building energy saving standards to significantly reduce energy consumption in summer.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Physical
M. M. Mikhailov, S. A. Yuryev, A. N. Lapin
Summary: The study investigated the effect of solid-state modification of titanium dioxide powder with zirconia and silica nanoparticles on the composition, structure, and diffuse reflectance spectra. It was found that the modified powders showed a decrease in reflectance coefficient in the visible spectrum and an increase in the near-IR region under the influence of solar irradiation. Additionally, the modified powders exhibited higher photostability compared to the non-modified powders.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Dongjie Wang, Zheling Zhang, Guisheng Zhu, Xiaoling Zhang, Jian Xiong, Jian Zhang
Summary: In this study, the use of aluminum and indium co-doped titanium dioxide as compact layers in carbon-based mesoscopic perovskite solar cells demonstrated significant improvement in device performance, with an efficiency increase of over 15% compared to pristine titanium dioxide.
Article
Polymer Science
Iryna Kovinchuk, Nadiia Haiuk, Giuseppe Lazzara, Giuseppe Cavallaro, Georgii Sokolsky
Summary: The photocatalytic degradation of low-density polyethylene (PE) films with titanium and manganese dioxide nanoparticles was investigated. Composite PE films with different photocatalysts were prepared and subjected to UV irradiation. Tests and measurements on the PE films were conducted to evaluate the effects of the nanoparticles on the degradation and thermal behavior of PE. The results showed the coupling effects of titanium and manganese dioxide nanoparticles on PE degradation, and the influence of the nanoparticles on the tensile properties and wettability of the films.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Multidisciplinary Sciences
Jun Peng, Felipe Kremer, Daniel Walter, Yiliang Wu, Yi Ji, Jin Xiang, Wenzhu Liu, The Duong, Heping Shen, Teng Lu, Frank Brink, Dingyong Zhong, Li Li, Olivier Lee Cheong Lem, Yun Liu, Klaus J. Weber, Thomas P. White, Kylie R. Catchpole
Summary: Perovskite solar cells are at the forefront of emerging photovoltaic technologies due to their rapid development in efficiency and stability. This study introduces a reverse-doping process to fabricate nitrogen-doped titanium oxide electron transport layers, which significantly improves the charge transport performance and fill factor of the cells.
Article
Chemistry, Physical
Jinglun Zhou, Dengxu Wang, Lihong Wang, Yuanqi Zhang, Shengyu Feng
Summary: A modified nano titanium dioxide photocatalyst was prepared by sol-gel method and surface modification for the degradation of high-density polyethylene (PE) films. The modified photocatalyst significantly improved the degradation properties of PE films under UV irradiation, with decreased tensile elongation retention rate, decreased molecular weight, and increased melt flow rate, making it a promising candidate for sustainable plastic degradation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Multidisciplinary
Surachet Hongkailers, Yaxuan Jing, Yanqin Wang, Napida Hinchiranan, Ning Yan
Summary: The upcycling of spent plastics has become a more urgent topic due to the rapid generation of plastic waste. The conversion of PET into arenes was demonstrated using a Co/TiO2 catalyst, achieving a TPA conversion rate of 75.2 mol% under optimized conditions.
Article
Engineering, Environmental
Prapatsorn Kaewkam, Apichaya Kanchanapaetnukul, Janista Khamyan, Nattapon Phadmanee, Kun-Yi Andrew Lin, Krisana Kobwittaya, Sanya Sirivithayapakorn
Summary: The study investigated the effects of TiO2 phases and UV light on photodegradation of LDPE films, finding that using TiO2-900°C with UV-C light resulted in the highest degradation efficiency. Analysis of crystal structure and elemental composition provided insights into the degradation mechanism of LDPE films.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Weihua Hong, Feng Gao, Chao Zhang, Xi Zhou, Xiaoting Deng, Shu Jiang, Shaofeng Yin
Summary: Organic-inorganic hybrid perovskite solar cells have shown promising properties but their commercialization is limited by challenges in carrier transport and interface stability. This study introduces a new strategy of using a three-dimensional TiO2 structure as the electron transport material to improve the stability of the donor/acceptor interface. The resulting devices demonstrate accelerated charge transport, reduced nonradiative recombination, extended interface, and shortened internal photoexcitons diffusion distance, leading to a top power conversion efficiency of 19.6% and excellent long-term stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Materials Science, Multidisciplinary
A. R. Zanatta
Summary: The anatase and rutile phases of a series of titanium dioxide samples were investigated by optical diffuse reflectance spectroscopy, showing the potential of estimating the phase composition with good precision. The optical bandgaps were also determined and correlated with the rutile mass ratio.
RESULTS IN PHYSICS
(2021)
Review
Chemistry, Multidisciplinary
Abdul Halim Hamdany, Alfrendo Satyanaga, Dichuan Zhang, Yongmin Kim, Jong R. Kim
Summary: This review presents the applications of photocatalytic TiO2 in cement composite materials, discussing the basic mechanism and factors affecting photocatalytic performance. However, cementitious materials containing TiO2 also face challenges such as decreasing surface area and mass transfer limitations.
APPLIED SCIENCES-BASEL
(2022)
Article
Energy & Fuels
Eduardo Linhares Qualharini, Carina Mariane Stolz, Matheus Martini, Eduardo Polesello, Clara Rocha da Silva
Summary: The study examined the addition of titanium dioxide in cement tiles for building facades to achieve fast assembly and self-cleaning effects. Results showed that cement tiles with 5% titanium dioxide meet the regulatory requirements for outdoor use and have the potential to be used as cool facades.
Article
Dentistry, Oral Surgery & Medicine
Paulo Henrique Martins Fernandes, Ester Alves Ferreira Bordini, Fernanda Balestrero Cassiano, Lucas Jose de Azevedo-Silva, Brunna Mota Ferrairo, Paulo Noronha Lisboa-Filho, Carlos Alberto Fortulan, Diana Gabriela Soares dos Passos, Ana Flavia Sanches Borges
Summary: The addition of TiO2 nanoparticles showed significant chemical, superficial, and biological changes in the reinforced materials. HA/TiO2Np5% demonstrated the best results for cell viability, while HA/TiO2Np8% showed the best results for mineralized matrix deposition.
Article
Chemistry, Physical
Albina A. Valeeva, Irina B. Dorosheva, Ekaterina A. Kozlova, Anna A. Sushnikova, Anna Yu Kurenkova, Andrey A. Saraev, Hartrmuth Schroettner, Andrey A. Rempel
Summary: In this study, titanium foil was anodized to grow titanium dioxide nanotubes (TiO2 NT) using an original technique. After calcination and platinization, the photocatalytic activity of TiO2 NT was significantly enhanced due to the unique morphology and large specific surface area, leading to a high rate of separation of photogenerated excited electrons and holes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)