Article
Materials Science, Composites
Ming Dong, Robert J. Young, David J. Dunstan, Dimitrios G. Papageorgiou
Summary: Understanding the stress transfer mechanisms is crucial for the preparation of high performance nanocomposites. This study investigated the interfacial stress transfer from a polymer substrate to monolayer and few-layer MoS2. The layer-dependent and strain-dependent photoluminescence spectroscopy were used to examine the stress transfer efficiency. The results showed that the interlayer stress transfer efficiency of MoS2 was higher than that of graphene and the strength of the MoS2/polymer interface was similar to graphene-polymer interface.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Rongbin Wang, Thorsten Schultz, Alexandra Papadogianni, Elena Longhi, Christos Gatsios, Fengshuo Zu, Tianshu Zhai, Stephen Barlow, Seth R. Marder, Oliver Bierwagen, Patrick Amsalem, Norbert Koch
Summary: In2O3, a transparent transition metal oxide, can have an enhanced or depleted surface electron accumulation layer (SEAL) depending on the density of oxygen vacancies at the surface. By adsorbing molecular electron donors or acceptors, the SEAL of In2O3 can be tuned. This work demonstrates that adsorption of [RuCp*mes](2) restores the SEAL, while adsorption of F(6)TCNNQ depletes the SEAL and generates upward band bending at the In2O3 surface.
Article
Multidisciplinary Sciences
Arthur P. Baddorf
Summary: The absolute values of work functions can be determined in ultraviolet photoemission spectroscopy (UPS) by measuring the minimum kinetic energy of secondary electrons generated by a known photon energy. However, some samples produce spectra that are difficult to interpret due to additional intensity below the true secondary electron cutoff.
SCIENTIFIC REPORTS
(2023)
Article
Nanoscience & Nanotechnology
Debarati Ghosh, Monojit Ghosal Chowdhury, Rathindranath Biswas, Krishna Kanta Haldar, Amitava Patra
Summary: In this study, a nanocomposite containing europium molybdate and molybdenum disulfide was synthesized in situ for enhanced electrochemical hydrogen evolution reaction (HER). The nanoflower architecture of MoS2 coupled with flakes of europium molybdate was observed, leading to an enhanced surface area and improved HER activity. The fabrication of lanthanide-containing MoS2 nanocomposites shows promise for efficient electrocatalytic hydrogen generation.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Jingyun Zou, Bing Gao, Xiaopin Zhang, Lei Tang, Simin Feng, Hehua Jin, Bilu Liu, Hui-Ming Cheng
Summary: A unique mixed-dimensional van der Waals heterostructure can be formed by integrating one-dimensional (1D) and two-dimensional (2D) materials. In situ chemical vapor deposition (CVD) is an effective method for constructing high-quality 1D SWCNT/2D MoS2 heterostructures. The growth mechanism and interface behavior of these heterostructures still pose challenges for future applications in electronic and optoelectronic devices.
ACTA PHYSICO-CHIMICA SINICA
(2022)
Article
Chemistry, Multidisciplinary
Inho Jeong, Kyungjune Cho, Seobin Yun, Jiwon Shin, Jaeyoung Kim, Gyu Tae Kim, Takhee Lee, Seungjun Chung
Summary: This study demonstrates the controllable surface charge transfer doping (SCTD) of molybdenum disulfide (MoS2) field-effect transistors using inkjet-printed benzyl viologen (BV). The BV-doped MoS2 FETs exhibit elaborately tailored electrical performance by adjusting the concentration and areal coverage of inkjet-printed BV dopants. The inkjet-printed SCTD method provides a feasible solution for modulating the electrical and optical performances of TMD-based devices.
Article
Chemistry, Physical
Zihan Gan, Lei Liu, Pengqi Hai, Long Li, Yuan Gao, Junyi Yin, Mingyan Li, Chao Wu, Wei Ai, Yonghong Cheng, Xin Xu
Summary: By studying the influence of crystallinity on the storage performance of Na+ in MoS2, it is found that MoS2 with higher crystallinity exhibits better high-rate Na+ storage performance and stronger pseudocapacitive response.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Sangyoon Lee, Hwi Yoon, Jaehyeok Kim, Inkyu Sohn, Jisang Yoo, Jusang Park, Seung-min Chung, Hyungjun Kim
Summary: In this study, a biomolecular glutamic acid (GLU) sensor based on 2D polycrystalline MoS2 was fabricated, demonstrating the direct charge transfer effect of adsorbed GLU onto MoS2. The sensor showed sensitive responses to GLU exposure without enzymes or receptors. Additionally, the electrode-encapsulated MoS2 sensor exhibited stable responses similar to the non-encapsulated MoS2 sensor.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Analytical
Kui Lai, Kaibo Yuan, Qinli Ye, Anqi Chen, Dong Chen, Da Chen, Chenjie Gu
Summary: In this study, attractive SERS performance was achieved by constructing a Mo2C@MoOx heterostructure. Through appropriate preparation and annealing processes, the SERS performance was significantly improved, achieving a very low detection limit and high Raman enhancement factor. HRTEM and XPS analysis revealed the mechanism behind the improvement of SERS performance with the Mo2C@MoOx heterostructure.
Article
Multidisciplinary Sciences
David Schmitt, Jan Philipp Bange, Wiebke Bennecke, AbdulAziz AlMutairi, Giuseppe Meneghini, Kenji Watanabe, Takashi Taniguchi, Daniel Steil, D. Russell Luke, R. Thomas Weitz, Sabine Steil, G. S. Matthijs Jansen, Samuel Brem, Ermin Malic, Stephan Hofmann, Marcel Reutzel, Stefan Mathias
Summary: Moire superlattices in van der Waals heterostructures can generate interlayer excitons with unique physical properties. By using femtosecond photoemission momentum microscopy, the formation mechanism and wavefunction distribution of interlayer excitons are quantitatively studied, providing insights for the investigation of correlated moire and exciton physics.
Article
Electrochemistry
Prashant Kumar, Seema Sharma, Shakra Jabeen, Kawaljeet Singh Samra
Summary: This study demonstrates the superior performance of MoS2-RGO nanostructure as an electrode material for supercapacitors through synthesis, characterization, and performance testing.
ELECTROCHIMICA ACTA
(2022)
Article
Instruments & Instrumentation
Famin Chen, Ji Wang, Mojun Pan, Junde Liu, Jierui Huang, Kun Zhao, Chenxia Yun, Tian Qian, Zhiyi Wei, Hong Ding
Summary: Time-resolved and angle-resolved photoemission spectroscopy (trARPES) is a powerful method for studying the non-equilibrium electronic structure in solid systems. This study introduces a trARPES apparatus that can selectively adjust the photon energy at 12, 16.8, and 21.6 eV with a repetition rate of 400 kHz. The energy and temporal resolutions of the three harmonics are determined, and the photon flux on the sample is estimated. The performance of this setup is verified through equilibrium and non-equilibrium ARPES measurements on topological materials, highlighting the importance of tunable extreme ultraviolet (XUV) sources.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Chemistry, Multidisciplinary
Ang-Yu Lu, Luiz Gustavo Pimenta Martins, Pin-Chun Shen, Zhantao Chen, Ji-Hoon Park, Mantian Xue, Jinchi Han, Nannan Mao, Ming-Hui Chiu, Tomas Palacios, Vincent Tung, Jing Kong
Summary: This study systematically explores the correlation between photoluminescence and Raman spectra in 2D transition metal dichalcogenides, and disentangles the contributions of strain and doping using machine learning models. It provides a methodology for applying machine learning to characterizations of 2D materials.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Junjie Ma, Zixiao Wang, Bo Jiang, Wei Wang, Hui Wang
Summary: The opto-electrochemical strategy is used to map and regulate electron transfer event on MoS2 monolayer. The heterogeneity of electrochemical activity on MoS2 down to nanoscale is resolved. The study provides a facile method to image the heterogeneity of electrochemical properties for nanomaterials with atomic thickness and regulate the local activity within the plane.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Syed Nadeem Abbas Shah, Syed Shahabuddin, Mohammad Khalid, Mohd Faizul Mohd Sabri, Mohd Faiz Mohd Salleh, Norazilawati Muhamad Sarih, Saidur Rahman
Summary: The rheological behavior of two-dimensional MoS2-based ethylene glycol nanofluids at low volume concentrations was investigated. The results showed that the viscosity reduction in nanofluids was due to the change in activation energy of ethylene glycol with the addition of MoS2. The nanofluids exhibited Newtonian behavior at concentrations below 0.01% and the yield strength varied with concentration and temperature.
Article
Thermodynamics
Yikai Li, Chenghan Sun, Zhongjie Shi, Yongli Gao, Lu Zhang, Haiyan Chen, Manlin Wang
Summary: This study investigates the effect of ambient density on spray two-stage auto-ignition characteristics under cold-start condition using both optical and numerical methods. The results show that high-temperature ignition is more sensitive to ambient density than low-temperature ignition, due to the increased suppression of high-temperature chemistry at higher ambient density. Additionally, the study finds that ambient density has little effect on the ignition site in the mixture fraction space. Kinetic analysis reveals that as ambient density decreases, the concentration of O-2 decreases, leading to reduced reaction rates of both low-temperature and high-temperature reactions and increased ignition delay. When the ignition delay becomes too long due to continuing diffusion after the end of injection, the spray misfire occurs.
COMBUSTION SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Jia Liu, Shitan Wang, Baopeng Yang, Haipeng Xie, Han Huang, Dongmei Niu, Yongli Gao
Summary: The protective effect of 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTCDA) passivation layer on the environmental stability of black phosphorus (BP) was studied. It was found that NTCDA can improve the environmental stability of BP and slow down the surface oxidation and degradation.
RESULTS IN PHYSICS
(2022)
Article
Engineering, Biomedical
Jing Wang, He Qiu, Yang Xu, Yongli Gao, Peijie Tan, Rui Zhao, Zhanhong Liu, Yajun Tang, Xiangdong Zhu, Chongyun Bao, Hang Wang, Hai Lin, Xingdong Zhang
Summary: In this study, a skin damage animal model was prepared to investigate the biological effect of recombinant humanized type III collagen (rhCol III) on skin repair. The results indicated that rhCol III could alleviate skin photoaging and have an influence on cells, extracellular matrix, and small biological molecules.
BIOACTIVE MATERIALS
(2022)
Article
Chemistry, Analytical
Nan Wang, Meghali Bora, Song Hao, Kai Tao, Jin Wu, Liangxing Hu, Jianjun Liao, Shiwei Lin, Michael S. Triantafyllou, Xiaogan Li
Summary: This paper presents the development of a compact, three-electrode electrochemical device functionalized by a biocompatible layer of hyaluronic acid methacrylate (HAMA) hydrogel for the adsorptive removal of Pb(II) ions in aqueous solutions. Both molecular interactions and electrochemical accumulation contribute to the adsorption capability of the device. The device shows high adsorption rate and reproducible performance, making it potentially useful for the rapid remediation of Pb(II) contamination.
Article
Chemistry, Physical
Junjie Jiang, Dingbang Yang, Yongsong Wang, Xiao Guo, Madoune Yassine, Wenqiang Huang, Tao Xu, Shanshan Wang, Han Huang, Fangping Ouyang, Yongli Gao
Summary: The effect of precursor concentrations in chemical vapor deposition on the orientation of MoO2 nanoflakes with respect to the substrate surface is investigated. Various characterization techniques are used to determine the crystal orientations of the nanoflakes and their epitaxial relationship with the substrate. Tentative atomic epitaxial models are proposed to explain the orientation and alignment. The study also demonstrates the utility of angle-resolved polarized Raman spectroscopy for quick and nondestructive identification of the crystallographic orientations of nanoflakes.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Zhiqiang Shi, Shuyue Wu, Siyuan Lin, Jia Sun, Han Huang, Deming Kong, Yongli Gao, Conghua Zhou
Summary: In this study, nickel electroplating is used to modify the transparent conductor in order to solve the corrosion problem caused by lead halide hybrid perovskite in perovskite solar cells. The results show that nickel electroplating improves the conductance, corrosion resistance, and oxidization resistance of the transparent conductor. SnO2 quantum dots and ITO sputtering are also applied to further improve the film conductance. The perovskite solar cells fabricated on the modified transparent conductors achieve a power conversion efficiency of 18.37%. The nickel-treated transparent conductors ensure efficient charge-extraction process and retard charge recombination. The storage-stability of the devices is also good, with 80% of initial performance reserved after 432 hours of storage in dark.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yanfei Meng, Dongsheng Zhang, Yingzi Song, Xinyi Yang, Yongli Gao, Jun Ma, Zunfu Hu, Xiuwen Zheng
Summary: Atomically dispersed Fe-x cluster nanocatalysts with dual catalytic activity were successfully designed and synthesized. The Fe-2-N-C catalyst showed higher activity compared to Fe-1-N-C due to the well-controlled adsorption energies of Fe-N sites. The loaded tamoxifen and high photothermal conversion ability further enhanced the catalytic activity for synergistic antitumor effects.
Article
Environmental Sciences
Anfuding Gulishengmu, Guang Yang, Lijun Tian, Yue Pan, Zhou Huang, Xingang Xu, Yongli Gao, Yi Li
Summary: This study assessed the water resource carrying capacity in Shihezi, Xinjiang, China using various methods and found that the city's water resource carrying capacity is increasing overall. However, the carrying capacity index of the water resource subsystem has significantly decreased. The most significant obstacles include irrigation coverage rate, proportion of agricultural water, water consumption per unit of GDP, water production modulus, water resource development and utilization ratio, water supply modulus, and proportion of ecological water.
Article
Crystallography
Siwen You, Xiao Guo, Junjie Jiang, Dingbang Yang, Mingjun Li, Fangping Ouyang, Haipeng Xie, Han Huang, Yongli Gao
Summary: Van der Waals (vdW) epitaxial growth was used to prepare vdW PbI2/CrOCl heterostructures by in situ thermally depositing PbI2 onto exfoliated thin-layered CrOCl nanoflakes in high vacuum. The structural properties and phonon behaviors of the heterostructures were investigated using optical microscopy, atomic force microscopy, X-ray diffraction, and temperature-dependent Raman spectroscopy. The morphology of PbI2 films on the CrOCl substrate varied with the substrate temperature, changing from hemispherical granules to 2D nanoflakes with flat top surfaces. An anomalous blueshift of the A(g)(1) and A(u)(2) mode in the PbI2/CrOCl heterostructure with increasing temperature was observed for the first time. The results provide a new material platform for vdW heterostructures and a potential method for optimizing heterostructure growth behaviors.
Article
Genetics & Heredity
Minglan Guo, Yongli Gao, Hui Huang
Summary: In this study, the complete mitochondrial genome of the striped large-eye bream, Gnathodentex aureolineatus, was obtained using a long PCR approach and Sanger sequencing. The genome was 16,940 bp in length and consisted of 37 genes, including protein-coding genes, ribosomal RNA genes, and transfer RNA genes. Phylogenetic analysis revealed that the genus Gnathodentex is closely related to Monotaxis within the family Lethrinidae. These findings provide valuable information for the taxonomy, conservation, and phylogeny of Lethrinidae.
MITOCHONDRIAL DNA PART B-RESOURCES
(2023)
Article
Nanoscience & Nanotechnology
Song Hao, Shancheng Han, Jichang Zhang, Jingjie Li, Nan Wang, Xiaogan Li
Summary: In this study, a simple and effective strategy for improving semiconductor-metal contacts and electrical performances in two-dimensional (2D) electronics is introduced by fabricating van der Waals (vdW) heterostructures using 2D semiconductor MoS2 and type-II Dirac semimetal PtTe2. The constructed MoS2/PtTe2 vdW heterostructures show ohmic contact and improved electrical performances, attributed to the utilization of ultrahigh-conductive layered PtTe2 as an interlayer. The concept of combining 2D semiconductors as the channel and Dirac semimetal PtTe2 as an interlayer provides a promising approach for the design of high-performance 2D electronics.
ACS APPLIED NANO MATERIALS
(2023)
Article
Environmental Sciences
Maolin Ran, Hao Tian, Guang Yang, Xiaolong Li, Lijun Tian, Chunxian Kong, Bing Liu, Pengfei Li, Lianqing Xue, Fadong Li, Yi Li, Yongli Gao
Summary: This study utilized the Bayesian isotope mixing model to investigate the water sources and competition between two typical riparian plants along the Manas River in Xinjiang, Northwest China. The findings showed that the climate in the study area is dry and strongly evaporative, and the interconversion between surface water and groundwater mainly occurs in the upper reaches of the river. The water uptake pattern for riparian plants varies depending on the ecological water conveyance conditions, with long-term ecological water conveyance reducing water competition among plants.
Article
Chemistry, Physical
Siyuan Lin, Shuyue Wu, De'en Guo, Han Huang, Xuefan Zhou, Dou Zhang, Kechao Zhou, Wenhao Zhang, Yue Hu, Yongli Gao, Conghua Zhou
Summary: Blending polyacrylic acid with organic salt can regulate the crystallization process and slow down the reaction rate between organic salt and PbI2, improving the crystallization of perovskite. The addition of polyacrylic acid increases the crystallite size and grain size of perovskite. By reducing trap density and charge recombination, the charge carrier lifetime in perovskite film and devices is prolonged, leading to an increase in power conversion efficiency of the device.
Article
Environmental Sciences
Xingang Xu, Hao Tian, Guang Yang, Xiaolong Li, Xinlin He, Yi Li, Yongli Gao, Fadong Li, Pengfei Li, Bing Liu, Lianqing Xue
Summary: This study proposes a scenario-based framework for assessing water resources in the production, living, and ecological spaces on the northern slopes of the Tianshan Mountains. It integrates land use simulation, socio-economic pathways, and regression equations to analyze the spatial and temporal variability of these resources. The results show that land use is dominated by ecological land and water resources are mainly used for production, with an expected increase in water use in the future.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Song Hao, Yanfang Niu, Shancheng Han, Jingjie Li, Nan Wang, Xiaogan Li
Summary: Analog and thermal tunable memristive behaviors were achieved in sulfurized In2Se3 nanoflakes, allowing for the emulation of bio-realistic synaptic functionalities. This provides a promising approach for robust neuromorphic applications at high temperatures.
ACS APPLIED NANO MATERIALS
(2023)
