Article
Chemistry, Physical
Akita Atsunobu, Shoma Sugita, Shin-ichi Naya, Hiroaki Tada
Summary: In this study, radial heteromesocrystals composed of anisotropic SnO2(head)-TiO2(tail) nanorods with heteroepitaxial junction were successfully synthesized by a hydrothermal reaction using SnO2 nanocrystals as seeds. These heteromesocrystals exhibit significantly higher photocatalytic activity for the aerobic partial oxidation of ethanol to acetaldehyde compared to radial TiO2 homomesocrystals. The enhanced photocatalytic activity can be attributed to efficient light harvesting by multiple light scattering, effective charge separation through one-directional electron transport, and the electrocatalytic activity of SnO2 for the two-electron oxygen reduction reaction.
CATALYSIS COMMUNICATIONS
(2021)
Article
Energy & Fuels
Saravanan Rajendran, Lalitha Gnanasekaran, Tuan K. A. Hoang, D. E. Diaz-Droguett, F. Gracia, M. A. Gracia-Pinilla
Summary: This study synthesized a TiO2@SnO2 catalyst through the integration of sol-gel and thermal decomposition methods, which exhibited significantly enhanced hydrogen adsorption. The composite demonstrated a mesoporous nanostructure with hindered pores by SnO2. The oxidation states of TiO2 also played a crucial role in hydrogen adsorption.
Article
Chemistry, Multidisciplinary
Minh Hai Nguyen, Kyo-Seon Kim
Summary: Understanding the growth mechanism of TiO2 nanorods (TNRs) is crucial for producing high-performance materials with controlled morphology and structure. Experimental observations suggest a new possible growth mechanism for TNRs, showing potential for application in high-performance perovskite solar cells. These findings provide a foundation for further research and application of TNR thin films in photovoltaic devices.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Engineering, Electrical & Electronic
Parveen Kumar, Shruti Vashishth, Isha Sharma, Vivek Verma
Summary: Recent observations have shown that a few drops of water on the surface of oxide materials can generate eco-friendly and cost-effective electricity, known as a hydroelectric cell (HEC). The production cost of HEC is very low, and porous SnO2 samples prepared by solid-state sintering have been shown to be effective for HEC. Various analyses such as X-ray diffraction, SEM, and Barrett-Joyner-Halenda technique were used to study the properties of the samples. Peal current and voltage values were obtained for circular and square pellets, demonstrating the dissociation of water and conduction phenomenon in the samples.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Jiabao Wang, Zhenkai Ji, Xiuzhen Xu, Tiantian Chen, Bo Chen, Guohua Gao, Jiwei Ma, Xipeng Nie, Xiaobin Xu
Summary: This work presents a hybrid lithographic method for growing TiO2 nanorod arrays with arbitrary patterns. The method combines top-down soft lithography and bottom-up hydrothermal approach. The morphology and density of the nanorods can be controlled by adjusting the precursor concentration, reaction time, temperature, and patterns. The work provides a new strategy for the low-cost and facile preparation of patterned TiO2 nanorod arrays and has potential applications in micro-nano-optoelectronic devices and other fields.
Article
Chemistry, Analytical
Bharat Sharma, Ashutosh Sharma, Jae-ha Myung
Summary: The study developed TiO2-SnO2 heterostructures sensors using a novel fabrication technique and investigated the adsorption properties of acetone gas on different surfaces through DFT calculations. The sensor showed ultra-sensitive response towards acetone vapors, high selectivity, repeatability, and long-term stability. The results provide a foundation for the development of advanced gas sensors for detecting hazardous materials in human environments, particularly for diabetic patients.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Mingjia Bai, Mei Chen, Xu Li, Qingji Wang
Summary: A highly selective and responsive NO2 gas sensor based on ZnO/SnO2 heterojunction was fabricated using chemical vapor deposition. The sensor exhibited high response values in a wide range of NO2 concentrations, with excellent selectivity and repeatability.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Yuan Luo, Kun Xie, Yiyang Feng, Qiuping He, Keqiang Zhang, Shizhou Shen, Feng Wang
Summary: The La(OH)(3) nanomd/walnut shell biochar composite (LN-WB) effectively adsorbed phosphate over a wide pH range, with a removal efficiency close to 100% at an initial phosphorus concentration of 10 mg P/L. The adsorption process was mainly controlled by chemisorption, and the loading efficiency of La on WB was up to 73.89%.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Bowen Zhang, Xiangli An, Saisai Zhang, Chongyang Wang, Zhiyong Zhao, Hari Bala, Zhanying Zhang
Summary: In this study, a highly regular array of TiO2 nanorods was prepared on FTO by a modified in situ hydrothermal method, followed by the growth of a uniform SnO2 layer on the nanorods to form a core-shell nanocomposite through an ion-layer adsorption-reaction process. The TiO2/SnO2 sensors exhibited improved gas sensing performance compared to TiO2 sensors, including higher sensitivity to ethanol, lower working temperature, and better long-term stability. The highest ethanol response was achieved when the growth cycle of the SnO2 shell was two times. The gas-sensing mechanism of the TiO2/SnO2 nanocomposites was attributed to their unique core-shell structure and the heterojunction between TiO2 and SnO2.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Shan Pian, Guojun Dong, Youhong Xiao, Rumin Li, Yu Su
Summary: In this study, almond-shaped Na2TiOSiO4 crystals were prepared using a novel method, and the morphology of uranium adsorbents was controlled by adjusting the acid-base ratio. The Walnut adsorbent, with a higher specific surface area and surface potential, exhibited twice the adsorption capacity of the Almond adsorbent and halved the equilibrium time compared to the Almond-b adsorbent. The adsorption mechanism of the adsorbent was proposed and confirmed. This research holds great promise for practical applications such as uranium recovery from seawater and nuclear wastewater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Zhikun Hu, Zerui Chen, Qianqian Liu, Wei Zhao, Yifei Xu, Hao Bin Wu
Summary: This study developed compact heterostructured particles with improved Na storage capacity by loading SnO2 nanoparticles into nanoporous TiO2 followed by carbon coating, aiming to increase the energy density of SIBs. The resulting TiO2@SnO2@C particles inherit the structural integrity of TiO2 and have extra capacity contribution from SnO2, delivering a volumetric capacity of 393 mAh cm(-3) notably higher than that of porous TiO2 and commercial hard carbon. The heterogeneous interface between TiO2 and SnO2 promotes charge transfer and facilitates redox reactions in the compact heterogeneous particles. This work demonstrates a useful strategy for electrode materials with high volumetric capacity.
Article
Chemistry, Physical
Jiale Deng, Juan Gao, Mei Liu, Lingcheng Zheng, Yanfen Wang, Yueqin Wang, Changzhao Chen, Yang Li, Gang He, Yin Liu
Summary: In this study, novel Ag and ZIF-8 nanoparticles were synthesized and used to decorate plasmonic TiO2/Ag/ZIF-8 nanorod array films, which showed improved photo-catalytic and photoelectrochemical properties under visible light irradiation. The synergistic effect of Ag and ZIF-8 nanoparticles was attributed to the extended absorption range of visible light and the suppression of carrier recombination.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yangyang Chen, Lianhuan Wang, Heyu Sun, Dongdong Zhang, Yiping Zhao, Li Chen
Summary: The study demonstrates that the catalytic performance of NGO-TiO2 composite catalysts can be improved with an appropriate ratio of NGO loading. A new mechanism explains how NGO enhances the TiO2 performance and addresses the posttreatment issue effectively.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Atsunobu Akita, Ryota Kojima, Hisashi Sugime, Hiroaki Tada
Summary: Heteroepitaxial growth from SnO2 seeds and FeOx surface modification significantly enhance the photocatalytic activity and exhibit electrocatalytic activity in the oxygen reduction reaction.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Pengru Yan, Zeyulin Zhang, Yu Xu, Hao Chen, Dazheng Chen, Qian Feng, Shengrui Xu, Yachao Zhang, Jincheng Zhang, Chunfu Zhang, Yue Hao
Summary: Ga2O3 has attracted attention due to its large bandgap and high breakdown electric field. The low-cost, non-vacuum, easy-to-operate mist-CVD method has been focused on. This study demonstrates the application potential of β-Ga2O3/GaN heterojunction in devices and the advantages and future development potential of the mist-CVD method.
Correction
Chemistry, Physical
Chen Luo, Yan Shao, Hua Yu, Hong-zhi Ma, Yu-hao Zhang, Long Gu, Bo Yin, Ming-bo Yang
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Stefano Borocci, Armando Camerlingo, Felice Grandinetti, Maria Rutigliano, Nico Sanna
Summary: The complexes of He, Ne, Ar, Kr, and Xe with B3N3H6 were investigated using MP2, CCSD(T), and SAPT ab initio methods. The complexes can be described as mono-, di-, and tri-coordinated to the N atoms, with stability following the order N-mono < N-di < N-tri. The interactions are dominated by dispersion and the binding energies are within the range of 1 or 2 kcal mol(-1). The results were compared with a recent DFT study on larger BN sheets complexes [Phys. Chem. Chem. Phys. 24 (2022) 2554-2566.].
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
V. Nagarajan, R. Bhuvaneswari, R. Chandiramouli
Summary: In this study, stable phosphoborane was used as a sensor to detect isobutane and n-propane in Liquefied Petroleum Gas (LPG). Phosphoborane demonstrated structural stability and semiconducting nature, and exhibited promising adsorption properties for the LPG molecules.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Xiaoxi Xu, Zijiang Yang, Bayaer Buren, Maodu Chen
Summary: In this study, the time-dependent wave packet method was used to investigate the reaction channels and mechanisms of Ca+ + HD. The results show that the CaH+ + D reaction channel plays a primary role, which is consistent with experimental results. Complex forming and direct-abstraction reaction mechanisms exist in this reaction process.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Keshab Pandey, Hae Kyung Jeong
Summary: A free-standing silicon-carbon nanofiber composite film was synthesized and investigated for supercapacitor applications. It exhibited high specific capacitance, energy density, and power density. After 5000 cycles, the film showed excellent specific capacitance retention and Coulombic efficiency.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Xinyu Zhang, Haosong Li, Xiaoyu Cao, Jing Gao, Yong Wei, Jianzhuo Zhu
Summary: The evaporation behavior of nanosized water aggregations on two-dimensional electroneutral solid surfaces with different surface polar unit densities was investigated. The results showed that the evaporation rate changes non-monotonically with the surface polar unit density, and the minimum evaporation rate is obtained when the surface has a modest surface polar unit ratio of 66.7%.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Yanyan Xu, Rui Dai, Xiaojie Wang, Zhijun Qiao, Haowei Wen, Dianbo Ruan, Yuzuo Wang
Summary: This article presents an innovative solvothermal sodium insertion method for synthesizing Triphylite-NaFePO4, which demonstrates optimal electrochemical performance in sodium-ion batteries.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Meiyi Jiang, Kun Yang, Yancheng Liu, Li Yao
Summary: The geometric structure and electronic properties of transition metal M (M = Cu, Fe, Mn)-TiO2 (101) surface adsorbed by NO2 and N2O were calculated by density functional theory (DFT) and DFT + U theory. The results showed that the adsorption of NO2 and N2O on Mn and Fe atoms is more stable, and a large number of active electrons are formed around these atoms, facilitating the catalytic reactions.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Sergey A. Vyrko, Yulia G. Polynskaya, Nikita A. Matsokin, Andrey M. Popov, Andrey A. Knizhnik, Nikolai A. Poklonski, Yurii E. Lozovik
Summary: In this study, carbon nanobracelets, which are cyclic molecules composed of alternating polycyclic regions and double carbon chains, were investigated using spin-polarized density functional theory. The results show that carbon nanobracelets with odd number of monomers exhibit distinct electronic energy levels, band gaps, and carbon chain deformation compared to those with even number of monomers.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Chanchan Wang, Quan Yang, Yanzhi Ding, Xiaoyong Lu, Dong Tian
Summary: It has been found that the introduction of buffer layers improves the electrical performance of solid oxide fuel cells (SSOFCs). In this study, varying ratios of Gd-doped CeO2 were used as buffer layers in YSZ-based SSOFCs. The results demonstrate that the performance of SSOFCs is enhanced when a buffer layer is added, with the highest performance achieved using Ce0.8Gd0.2O2-delta (GDC20) as the buffer layer. This suggests that the use of GDC series buffer layers is an attractive strategy to optimize performance loss due to electrolyte-electrode interactions.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Wang Li, Yi-Fan Zhang, Jia-Bin Huang, Chang-Yang Wang, Feng Zhang, Jiu-Zhong Yang, Long Zhao
Summary: The gas-phase reaction of propargyl with vinylacetylene was investigated using synchrotron photoionization and molecular-beam mass spectrometry methodologies. The formation mechanisms of the resulting cyclic structures were examined using quantum computations. Two previously unidentified isomers were detected and identified for the first time.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Avijit Pramanik, Sanchita Kundu, Olorunsola Praise Kolawole, Kaelin Gates, Paresh Chandra Ray
Summary: This study investigates the influence of aspect ratio and quantum confinement on the single-photon and two-photon absorption cross-section of perovskite CsPbI3 nanorods. Experimental data shows that CsPbI3 nanorods have an extremely high two-photon absorption cross-section, significantly surpassing organic chromophores and other CsPbBr3 nanocrystals. Moreover, adjusting the aspect ratio can significantly enhance the absorption ability. Additionally, the study also reveals a moderate quantum confinement effect on the single-photon and two-photon absorption cross-section of the nanorods.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Hyon-Tae Pak, Jin-A Choe, Kyong-Sik Ju, Yong -Son Rim
Summary: Drug-loaded cellulose diacetate (CDA) membranes were prepared using different compositions of mixed solvent. The microstructure and performance of the membranes were investigated, and a method to predict drug release properties was proposed. The results showed that the composition of the mixed solvent significantly affected the overall performance of CDA membranes, and the release rates of drugs were related to Δdelta and the intrinsic viscosity of CDA.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Gabriella E. Ravin, E. Curotto
Summary: We have developed a systematic approach to optimize the training set sizes for neural networks in fitting ab initio potential energy surfaces. Using this approach, we have constructed several spectroscopic quality potential energy surfaces for [Li(H2)n]+, n = 1 - 9. The ground state properties have been computed for all the systems and selected states.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Guohua Xu, Lei Xu, Feng Zhang, Chunling Yu, Yu Song
Summary: NiS1.03@Ni7S6/carbon composite was successfully prepared using corn stalk as a carbon source via a simple adsorption-sulphurization process. The composite exhibited a specific capacitance of 1554.6 F/g at 1 A/g as a supercapacitor electrode, with a capacitance retention rate of 80.4% after 5000 cycles. Furthermore, the NiS1.03@Ni7S6/carbon//AC asymmetric supercapacitor showed a high energy density of 41.2 Wh kg-1 at a power density of 750 W kg-1, and excellent cycling stability with 86.8% capacitance retention after 10,000 cycles.
CHEMICAL PHYSICS LETTERS
(2024)