The lithium and sodium storage performances of phosphorus and its hierarchical structure
Dan Zhao, Lihui Zhang, Chengcheng Fu, Jinying Zhang*, and Chunming Niu*
Xi’an Jiaotong University, China
Phosphorus structures are promising anodes for lithium-ion and sodium- ion batteries. The phosphorus allotropes, lithiation/sodiation mechanism of different phosphorus, and the electrochemical performances of phosphorus composites according to different hierarchical structures have been reviewed in this work.
Solution-processed highly adhesive graphene coatings for corrosion inhibition of metals
Gi-Cheol Son1, Deuk-Kyu Hwang2, Jaewon Jang1, Sang-Soo Chee1, Kyusang Cho1, Jae-Min Myoung2,*, and Moon-Ho Ham1,*
1 Gwangju Institute of Science and Technology (GIST), Republic of Korea
2 Yonsei University, Republic of Korea
A protective coating based on highly structured reduced graphene oxide (RGO)/graphene oxide (GO) applied to metal plates is developed by spray coating and subsequent well-controlled annealing. The coating exhibits superior corrosion resistance and adhesion strength compared to those of GO- and RGO-only coatings.
In situ observation of synthesized nanoparticles in ultra-dilute aerosols via X-ray scattering
Sarah R. McKibbin1,*, Sofie Yngman1, Olivier Balmes1, Bengt O. Meuller1, Simon Tågerud1, Maria E. Messing1, Giuseppe Portale2, Michael Sztucki3, Knut Deppert1, Lars Samuelson1, Martin H. Magnusson1, Edvin Lundgren1, and Anders Mikkelsen1,*
1 Lund University, Sweden
2 University of Groningen, The Netherlands
3 ESRF – The European Synchrotron, France
We use high-brilliance synchrotron radiation for in situ characterization of aerosol nanoparticles synthesized by spark generation. The nano-aerosol is investigated at various stages of synthesis within the production environment to reveal structural characteristics at ultra-dilute concentrations, even after filtering to produce an industrially relevant narrow size distribution with volume fractions below 3 × 10–10.
Two-in-one solution using insect wings to produce graphene- graphite films for efficient electrocatalysis
Huaiyu Li1, Lihan Zhang1, Long Li1, Chaowen Wu1, Yajiao Huo1, Ying Chen1, Xijun Liu1,*, Xiaoxing Ke2,*, Jun Luo1,*, and Gustaaf Van Tendeloo3,4
1 Tianjin University of Technology, China
2 Beijing University of Technology, China
3 University of Antwerp, Belgium
4 Wuhan University of Technology, China
We demonstrate a novel strategy to synthesize graphene-graphite films (GGFs) by heating insect wings coated with FeCl3 in N2 atmosphere. The GGFs exhibited unparalleled performance for catalyzing the oxygen reduction reaction (ORR) in alkaline media.
Photo-controlled release of paclitaxel and model drugs from RNA pyramids
Congcong Xu1, Hui Li1, Kaiming Zhang2, Daniel W. Binzel1, Hongran Yin1, Wah Chiu2, and Peixuan Guo1,*
1 The Ohio State University, USA
2 Stanford University, USA
The linker length can dramatically affect the drug release kinetics from redox-responsive polymer-drug conjugate micelles.
pH-sensitive and biodegradable charge-transfer nanocomplex for second near-infrared photoacoustic tumor imaging
Zhimin Wang, Paul Kumar Upputuri, Xu Zhen, Ruochong Zhang, Yuyan Jiang, Xiangzhao Ai, Zhijun Zhang, Ming Hu, Zhenyu Meng, Yunpeng Lu, Yuanjing Zheng, Kanyi Pu, Manojit Pramanik*, and Bengang Xing*
Nanyang Technological University, Singapore
A pH-sensitive and biodegradable organic charge-transfer nanocomplex acts as new class of photoacoustic probe for tumor acidic microenvironment imaging in the second near-infrared window.
Detecting van der Waals forces between a single polymer repeating unit and a solid surface in high vacuum
Wanhao Cai, Chen Xiao, Linmao Qian, and Shuxun Cui*
Southwest Jiaotong University, China
By removing the solvent molecules and surface adsorbed water in high vacuum, the situation of the forces exerted on the surface adsorbed molecule is greatly simplified. The van der Waals forces between a single polymer repeating unit and a solid surface have been successfully measured by atomic force microscopy (AFM)-based single-molecule force spectroscopy (SMFS) in high vacuum.
Origin of strong and narrow localized surface plasmon resonance of copper nanocubes
Peng Zheng1, Haibin Tang1, Botong Liu1,2, Sujan Kasani1, Ling Huang2,*, and Nianqiang Wu1,*
1 West Virginia University, USA
2 Nanjing Tech University, China
Cu nanocubes are found to support strong plasmonic corner mode, which is spectrally separated from interband transitions. This opens opportunities for the development of inexpensive copper-based plasmonic nanomaterials.
Facile preparation of unique three-dimensional (3D) α-MnO2/ MWCNTs macroporous hybrid as the high-performance cathode of rechargeable Li-O2 batteries
Shuiyun Shen, Aiming Wu, Guofeng Xia, Guanghua Wei, Xiaohui Yan, Yao Zhang, Fengjuan Zhu, Jiewei Yin, and Junliang Zhang*
Shanghai Jiao Tong University, China
Unique three-dimensional macroporous α-MnO2/MWCNTs electrode improves capacity and durability of Li-O2 batteries.
Surface molecular doping of all-inorganic perovskite using zethrenes molecules
Arramel1,*, Hu Pan1, Aozhen Xie2,3, Songyan Hou2,3, Xinmao Yin1, Chi Sin Tang1, Nguyen T. Hoa2, Muhammad D. Birowosuto2, Hong Wang2,3, Cuong Dang2,3,*, Andrivo Rusydi1, Andrew T. S. Wee1,4, and Jishan Wu1,*
1 National University of Singapore, Singapore
2 CINTRA UMI CNRS/NTU/THALES 3288, Singapore
3 Nanyang Technological University, Singapore
4 Institute of Materials Research & Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore
The interfacial electronic nature between two kinetically-blocked zethrene molecules on CsPbBr3 crystal is investigated. The directionality of charge transfer at the organic/perovskite interface is investigated using photoelectron spectroscopy.
Dynamic nanoscale imaging of enriched CO adlayer on Pt(111) confined under h-BN monolayer in ambient pressure atmospheres
Hao Wu1,2, Pengju Ren3,4, Peng Zhao4, Zhongmiao Gong5, Xiaodong Wen3,4, Yi Cui5,*, Qiang Fu2,*, and Xinhe Bao1,2
1 University of Science and Technology of China, China
2 Dalian Institute of Chemical Physics, Chinese Academy of Sciences, China
3 Synfuels China Co., Ltd, China
4 Institute of Coal Chemistry, Chinese Academy of Sciences, China
5 Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, China
Monolayer hexagonal boron nitride (h-BN) is transparent for imaging of CO molecules underneath by near ambient pressure scanning tunneling microscope (NAP-STM), showing confinement-induced enrichment of CO adsorption in nanospace between h-BN and Pt(111).
Orientation-controlled, low-temperature plasma growth and applications of h-BN nanosheets
Ivan Sergeevich Merenkov1,2,*, Mikhail Sergeevich Myshenkov3, Yuri Mikhailovich Zhukov3, Yohei Sato4, Tatyana Sergeevna Frolova5,6,7, Denis Vasilevich Danilov3, Igor Alekseevich Kasatkin3, Oleg Sergeevich Medvedev3, Roman Vladimirovich Pushkarev1, Olga Ivanovna Sinitsyna5,7, Masami Terauchi4, Irina Alekseevna Zvereva3, Marina Leonidovna Kosinova1, and Ken Ostrikov8,9
1 Nikolaev Institute of Inorganic Chemistry SB RAS, Russia
2 Ural Federal University, Russia
3 Saint-Petersburg State University, Russia
4 Tohoku University, Japan
5 Institute of Cytology and Genetics SB RAS, Russia
6 Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Russia
7 Novosibirsk State University, Russia
8 Queensland University of Technology, Australia
9 CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Australia
In this study, we present low-temperature plasma synthesis of vertically oriented hexagonal boron nitride (h-BN) nanosheets with different morphology—maze-like and wavy. The morphological type can be easily and effectively controlled by the deposition temperature. The high thermal stability, oxidation resistivity and significant antibacterial effect of h-BN nanosheets were demonstrated.
Large unsaturated room temperature negative magnetoresistance in graphene foam composite for wearable and flexible magnetoelectronics
Rizwan Ur Rehman Sagar1,2, Massimiliano Galluzzi1,3, Alberto García-Peñas1, Masroor Ahmad Bhat1, Min Zhang2, and Florian J. Stadler1,*
1 Shenzhen University, China
2 Tsinghua University, China
3 Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, China
Room temperature positive magnetoresistance (PMR) in graphene is a conventional phenomenon but we observed large negative magnetoresistance (NMR) in GF/polydimethylsiloxane (GF/PDMS) at room temperature for the first time.
Highly bright and low turn-on voltage CsPbBr3 quantum dot LEDs via conjugation molecular ligand exchange
Guopeng Li1, Jingsheng Huang2, Yanqing Li2, Jianxin Tang2,*, and Yang Jiang1,*
1 Hefei University of Technology, China
2 Soochow University, China
A uniform and low-roughness CsPbBr3 quantum-dot film with high photoluminescence quantum yield (PLQY) can be prepared via the solid-solution ligand-exchange method with -conjugation molecules. A highly bright CsPbBr3 quantum dot light-emitting diode (QLED) with a luminance of 12,650 cd/m2 can be fabricated with phenylethylammonium bromide (PEABr) treatment.
Strong dual-crosslinked hydrogels for ultrasound-triggered drug delivery
Wenxu Sun, Heting Jiang, Xin Wu, Zhengyu Xu, Chen Yao, Juan Wang, Meng Qin, Qing Jiang, Wei Wang*, Dongquan Shi*, and Yi Cao*
Nanjing University, China
A dual crosslinked hydrogel containing dynamic covalent boronate ester bonds between the anti-inflammation drug, tannic acid, and the hydrogel backbone was engineered for ultrasound triggered drug release. The unique nanoscale architecture of the hydrogel network greatly prevents basal drug release under normal stressful physiological conditions.
Growth mechanism of CsPbBr3 perovskite nanocrystals by a co-precipitation method in a CSTR system
Jibin Zhang, Lianwei Fan, Junli Li, Xiangfu Liu, Rongwen Wang, Lei Wang, and Guoli Tu*
Huazhong University of Science and Technology, China
A continuous stirred-tank reactor (CSTR) system was used to retard the reaction rate by controlling the rate of precursors fed into toluene. This scheme helps us observe useful intermediate stages to gain insight into the growth mechanism of CsPbBr3 perovskite nanocrystals.
The influence of physiological environment on the targeting effect of aptamer-guided gold nanoparticles
Ding Ding1,†, Yinling Zhang1, Edward A. Sykes2, Long Chen3, Zhuo Chen1,*, and Weihong Tan1,4,*
1 Hunan University, China
2 Queen’s University, Canada
3 University of Macau, Macau, China
4 University of Florida, USA
† Present address: Shanghai Jiao Tong University, China
The physiological environment changed targeting nanomaterials surface chemistry and rendered them biological identities leading to the variations of targeting efficiency. This dynamic changing process involving protein corona blocking, targeting ligands desorption and enzymatic cleavage adversely affected aptamer-guided gold nanoparticles targeting efficiency.
Precise control of graphene etching by remote hydrogen plasma
Bangjun Ma, Shizhao Ren, Peiqi Wang, Chuancheng Jia, and Xuefeng Guo*
Peking University, China
The reaction process of graphene etching by atomic hydrogen, especially the anisotropic etching effect, is elucidated in detail based on a custom-built remote hydrogen plasma etching system. Using the knowledge gained about the relevant mechanisms, controlled preparation of graphene edges with specified zigzag and armchair configuration is achieved, which promises precise control of the electronic properties of graphene.
Quasi-two-dimensional β-Ga2O3 field effect transistors with large drain current density and low contact resistance via controlled formation of interfacial oxygen vacancies
Zhen Li, Yihang Liu, Anyi Zhang, Qingzhou Liu, Chenfei Shen, Fanqi Wu, Chi Xu, Mingrui Chen, Hongyu Fu, and Chongwu Zhou*
University of Southern California, USA
In this study, we report that n-type β-Ga2O3 field-effect transistors (FETs) made with Ti/Au contacts could exhibit large saturation drain current density of ~ 3.1 mA/μm and low contact resistance of ~ 0.387 Ω•mm after annealing in argon atmosphere.
Space-confined growth of monolayer ReSe2 under a graphene layer on Au foils
Chunyu Xie1, Shaolong Jiang1, Xiaolong Zou2, Yuanwei Sun1, Liyun Zhao1, Min Hong1, Shulin Chen1,3, Yahuan Huan1, Jianping Shi1, Xiebo Zhou1, Zhepeng Zhang1, Pengfei Yang1, Yuping Shi1, Porun Liu4, Qing Zhang1, Peng Gao1,5, and Yanfeng Zhang1,*
1 Peking University, China
2 Tsinghua University, China
3 Harbin Institute of Technology, China
4 Griffith University, Australia
5 Collaborative Innovation Center of Quantum Matter, China
Graphene/ReSe2 heterostructures have been synthesized on Au foils via a facile chemical vapor deposition route. Interestingly, the second-grown ReSe2 preferentially evolves at the interface between the first-grown graphene and the Au substrate, thus providing a clear example of the confined growth of a two-dimensional (2D) material. The edges and domain boundaries of graphene are proposed to be the preferred intercalation pathways for the ReSe2 precursors.
Porous N-doped-carbon coated CoSe2 anchored on carbon cloth as 3D photocathode for dye-sensitized solar cell with efficiency and stability outperforming Pt
Wenli Lu, Rui Jiang, Xiong Yin*, and Leyu Wang*
Beijing University of Chemical Technology, China
CoSe2 embedded in N-doped carbon nanocage (CoSe2/N-C) supported on carbon cloth is fabricated as three-dimensional (3D) photocathode for dye-sensitized solar cell with both high efficiency and long-term stability, outperforming Pt counterpart.
Pseudogap, Fermi arc, and Peierls-insulating phase induced by 3D–2D crossover in monolayer VSe2
Yuki Umemoto, Katsuaki Sugawara*, Yuki Nakata, Takashi Takahashi, and Takafumi Sato
Tohoku University, Japan
We have fabricated monolayer VSe2 film by molecular beam epitaxy and investigated its electronic state by angle-resolved photoemission spectroscopy (ARPES). We found an insulating gap on the entire Fermi surface in the charge-density-wave state as well as a pseudogap with a Fermi arc in the normal state. The present result opens a pathway toward understanding the interplay between the dimensionality and the novel physical properties in atomic-layer transition-metal dichalcogenides.
Few-layer formamidinium lead bromide nanoplatelets for ultrapure-green and high-efficiency light-emitting diodes
Huan Fang, Wei Deng, Xiujuan Zhang*, Xiuzhen Xu, Meng Zhang, Jiansheng Jie, and Xiaohong Zhang*
Soochow University, China
We achieved "greenest" light-emitting diodes with a high external quantum efficiency (EQE) of 3.53% using few-layer FAPbBr3 nanoplatelets.
Janus electrode with simultaneous management on gas and liquid transport for boosting oxygen reduction reaction
Yingjie Li1, Haichuan Zhang1, Nana Han1, Yun Kuang1, Junfeng Liu1, Wen Liu1,*, Haohong Duan2,*, and Xiaoming Sun1,*
1 Beijing University of Chemical Technology, China
2 University of Oxford, UK
Janus electrode with asymmetric wettability possesses a proper aerophilic thickness which can capture and keep stable gas film as O2 reservoir shortening the O2 transport pathway to active sites in gas/solid/liquid interface, and provides channels for ion transport. The special Janus film exhibited high oxygen reduction reaction (ORR) activity and rapid current growth, superior over the superaerophilic and superaerophobic electrodes.
In-situ fabrication of PtSe2/GaN heterojunction for self-powered deep ultraviolet photodetector with ultrahigh current on/off ratio and detectivity
Ranran Zhuo1, Longhui Zeng2, Huiyu Yuan2, Di Wu1,*, Yuange Wang1, Zhifeng Shi1, Tingting Xu1, Yongtao Tian1, Xinjian Li1,*, and Yuen Hong Tsang2,*
1 Zhengzhou University, China
2 The Hong Kong Polytechnic University, Hong Kong, China
The self-powered PtSe2/GaN heterojunction deep ultraviolet photodetectors are constructed by in-situ synthesis of two-dimensional (2D) PtSe2 thin films on GaN substrates, which exhibit excellent photoresponse properties to the deep ultraviolet with ultrahigh device performances.
Enhancement of the hydrogen evolution performance by finely tuning the morphology of Co-based catalyst without changing chemical composition
Wenling Gu1,2, Liuyong Hu1,2, Changshuai Shang1,2, Jing Li1,*, and Erkang Wang1,*
1 Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, China
2 University of Chinese Academy of Sciences, China
By tuning the morphologies of precursors, the higher surface area and faster electron transfer of the final catalysts are afforded, proving the feasibility to enhance the catalytic property by tuning the morphology without changing the chemical composition.
Nanoscale chemical imaging of individual chemotherapeutic cytarabine-loaded liposomal nanocarriers
Karin Wieland1, Georg Ramer2,3, Victor U. Weiss1, Guenter Allmaier1, Bernhard Lendl1, and Andrea Centrone2,*
1 TU Wien, Austria
2 National Institute of Standards and Technology, USA
3 University of Maryland, USA
Chemically-sensitive label-free photothermal induced resonance (PTIR) measurements provide insights into cytarabine drug distribution in individual liposomes (~ 80 nm diameter) with nanoscale resolution and enable liposome classification. A novel tapping-mode PTIR method based on heterodyne non-linear frequency mixing enables better characterization of the mechanically complacent (soft) liposomes and detection of ~ 103 cytarabine molecules (~ 1.7 zmol) encapsulated by a single liposome.
Porous nitrogen-doped carbon/MnO coaxial nanotubes as an efficient sulfur host for lithium sulfur batteries
Chao Lin1, Longbing Qu2, Jiantao Li1, Zhengyang Cai1, Haoyun Liu1, Pan He1, Xu Xu1,*, and Liqiang Mai1,*
1 Wuhan University of Technology, China
2 The University of Melbourne, Australia
Porous nitrogen-doped carbon/MnO coaxial nanotubes (MnO@PNC) are prepared and used as a functional sulfur host for lithium-sulfur (Li-S) batteries. The host exhibits continuous conductivity network and excellent chemical interaction with polysulfides. When employed for cathodes of Li-S batteries, MnO@PNC-S shows superior rate performance and cyclability.
Ultrathin wavy Rh nanowires as highly effective electrocatalysts for methanol oxidation reaction with ultrahigh ECSA
Xiaoyang Fu, Zipeng Zhao, Chengzhang Wan, Yiliu Wang, Zheng Fan, Frank Song, Bocheng Cao, Mufan Li, Wang Xue, Yu Huang*, and Xiangfeng Duan*
University of California, Los Angeles, USA
The ultrathin Rh wavy nanowire was studied as a highly effective methanol oxidation reaction (MOR) electrocatalyst with an ultrahigh electrochemically active surface area (ECSACO) of 144.2 m2/g and mass activity of 722 mA/mg at 0.61 V, which is considerably higher than many previously reported Rh and Pt-based electrocatalysts at the same potential.
Dendrite-free all-solid-state lithium batteries with lithium phosphorous oxynitride-modified lithium metal anode and composite solid electrolytes
Chunhua Wang1,2,3, Guoliang Bai2,*, Yifu Yang1,*, Xingjiang Liu3,*, and Huixia Shao1
1 Wuhan University, China
2 Anqing Normal University, China
3 Tianjin Institute of Power Sources, China
A novel method for suppressing Li dendrites via using Li phosphorous oxynitride (LiPON) modified Li anode and Li1.5Al0.5Ge1.5(PO4)3-poly(ethylene oxide)(Li bistrifluoromethane-sulfonimide) (LAGP-PEO(LiTFSI)) composite solid electrolyte in all solid-state Li battery is proposed. The LiPON thin film can form a stable interphase between Li metal anode and LAGP- PEO(LiTFSI) solid electrolyte at a perfectly close contact. LiPON film can also prevent the Li metal anode from dendrite formation.
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