Yuanyuan Wu

Jilin Normal University

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Chunbo Liu

Jilin Normal University

Guangbo Che

BaiCheng Normal University

Wei Jiang

Jilin Normal University

Xiaoxin Zou

Jilin University

Guodong Li

State Key Laboratory of Inorganic Synthesis and Preparative Chemistry

Yipu Liu

Hainan University

Tianyu Zhou

Jilin Normal University

Xianyu Chu

Jilin Normal University

Yunchao Ma

Jilin Normal University

Hongji Li

Hainan Normal University

Cooperative Institutions

Chinese Academy of Sciences

Jilin Normal University

Jilin University

University of Chinese Academy of Sciences

Tianjin University

State Key Laboratory of Inorganic Synthesis and Preparative Chemistry

Shanghai Jiao Tong University

Jiaxing University

Jilin Medical University

Huazhong University of Science and Technology

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Preparation, Characterization, and Structure Trends for Graphite Intercalation Compounds Containing Pyrrolidinium Cations

Chemistry of Materials (2016)

Hanyang Zhang Yuanyuan Wu Weekit Sirisaksoontorn Vincent T. Remcho Michael M. Lerner

New graphite intercalation compounds (GICs) containing N,N-n-alkyl substituted pyrrolidinium cation intercalates (Pyn.m, n, m = alkyl chain lengths) are obtained via cationic exchange from stage-1 donor-type GIC [Na(ethylenediamine)1.0]C15. Powder X-ray diffraction and thermogravimetric analyses are used to determine the GIC structures and compositions. [Py4.8]C47·0.71DMSO and [Py8.8]C48 with intercalate monolayers are obtained as stage-1 GICs with gallery expansions of 0.48 nm, whereas [Py1.18]C47 and [Py12.12]C80·0.25DMSO form stage-1 GICs with intercalate bilayers and gallery expansions of 0.81 nm. The gallery dimensions require that alkyl chain substituents orient parallel to the encasing graphene sheets. Smaller intercalate cations such as Py1.4, Py4.4, and Py1.8 either form high-stage GICs or do not form stable intercalation compounds. These results, along with those reported for graphite intercalation of other quaternary ammonium cations, indicate trends in graphite chemistry where larger intercalates form more stable and lower-stage GICs, and the graphene sheet charge densities can be correlated to the intercalate footprint areas.

Thermogravimetric analysis

Cationic polymerization

10.1021/acs.chemmater.5b04828

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Citations (22)

Strategy for Rapid Recovery of Simultaneous Sulfide and Nitrite Removal under High Substrate Inhibition

Research Square (Research Square) (2021)

Wang Kai-quan Qaisar Mahmood Bilong Chen Siyi Liu Yuanyuan Wu

Abstract The paper deals with the strategy for a quick recovery of reactor treating sulfide and nitrite simultaneously under inhibition caused by high substrate concentration. For influent sulfide concentration of 360 mg S/L, respective sulfide and nitrite removal percentages dropped to 74.19% and 14.33% due to inhibition caused by high sulfide and nitrite concentrations. It was found that reduction in the influent substrate concentration (300 mg S/L) could not revive the nitrite removal performance in 4 days’ operation, which still showed a declining tendency from 47.16–18.52%. Regulating the influent pH around 6.70 ± 0.10, it only took 4 days to recover the performance for 300 mg S/L. Furthermore, at influent sulfide concentration increased to 360 mg S/L, respective sulfide and nitrite removal percentages were 99.76 ± 0.27% and 100%. The strategy of regulating influent pH could recover the process performance in a short term, which would provide great convenience for subsequent process research.

10.21203/rs.3.rs-597012/v1

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Precursor-mediated synthesis of double-shelled V₂O₅hollow nanospheres as cathode material for lithium-ion batteries

CrystEngComm (2015)

Feifan Guo Meihong Fan Pan-Pan Jin Hui Chen Yuanyuan Wu

Hollow micro-/nanostructures have a wide range of applications in catalysis, rechargeable batteries, drug delivery, and gas sensors, as well as energy storage and conversion. Herein, we report a facile, template-free, precursor-mediated method to synthesize V2O5 nanomaterials with three different architectures: double-shelled hollow nanospheres, single-shelled hollow nanospheres and nanoparticles. These V2O5 nanostructures are obtained via a simple thermal treatment in air of a "pre-synthesized" vanadyl glycerolate precursor, and their morphologies can be easily tuned by varying the thermal treatment temperatures. Electrochemical studies show that the double-shelled V2O5 hollow nanospheres as a cathode material for lithium-ion batteries deliver an initial capacity of 256.7 mA h g−1 with a Coulombic efficiency of nearly 100%, and their capacity is superior to the two other V2O5 nanostructures (i.e., single-shelled hollow nanospheres and nanoparticles), mainly due to their unique double-shelled hollow structure.

Nanomaterials

10.1039/c5ce01398d

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Citations (23)

Broadband electromagnetically induced transparency-like manipulation of graphene–black phosphorus hybrid metasurface

Journal of Physics D Applied Physics (2021)

Yanli Xu Hongxu Li Yuanyuan Wu Linfu Li Zhengping Zhang

Plasmonics of two-dimensional materials provides a platform for enhancing light–matter interactions and offers a variety of novel applications in the terahertz range. In this work, we theoretically and numerically investigate the broadband tunable electromagnetically induced transparency-like (EIT)-like effect based on graphene–black phosphorus (G–BP) metasurface. The designed structural unit consists of a circular G–BP disk placed between two parallel G–BP strips, both of which operate in bright mode. It can achieve a broadband EIT-like effect that performs beyond individual graphene and BP films, where the underlying physical mechanism is the near-field coupling of resonator elements and the coupling of two bright-bright modes. In addition, we can flexibly adjust the transparency window of the EIT-like effect by changing the geometric parameters, polarization angle, and Fermi energy level of G–BP. The finite-difference time-domain simulation results agree well with the results of the theoretical analysis based on the coupled Lorentz oscillator model. Moreover, the proposed structure exhibits excellent dispersion accompanied with a group index of ∼60, which provides theoretical guidance for slow-light optical devices.

Electromagnetically Induced Transparency

Black Phosphorus

10.1088/1361-6463/ac1a9f

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Citations (10)

Extraction, identification, and molecular mechanisms of α-glucosidase inhibitory peptides from defatted Antarctic krill (Euphausia superba) powder hydrolysates

International Journal of Biological Macromolecules (2024)

Kewei Zheng Yuanyuan Wu Qingfei Dai Xiaojun Yan Yu Liu

Antarctic krill

Enzymatic Hydrolysis

10.1016/j.ijbiomac.2024.131126

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