Search

Your search keyword '"Liu, Liren"' showing total 1,616 results
Start Over Author "Liu, Liren"
1,616 results on '"Liu, Liren"'

4. One Dimensional Nearly Free Electron States in Borophene

Author

Kong, Longjuan, Liu, Liren, Chen, Lan, Zhong, Qing, Cheng, Peng, Li, Hui, Zhang, Zhuhua, and Wu, Kehui

Subjects
Condensed Matter - Materials Science
Abstract

Two-dimensional boron (borophene) is featured by its structural polymorphs and distinct in-plane anisotropy, opening opportunities to achieve tailored electronic properties by intermixing different phases. Here, using scanning tunneling spectroscopy combined with first-principles calculations, delocalized one-dimensional nearly free electron states (NFE) in the (2,3) or \b{eta}12 borophene sheet on the Ag(111) surface were observed. The NFE states emerge from a line defect in the borophene, manifested as a structural unit of the (2,2) or \c{hi}3 sheet, which creates an in-plane potential well that shifts the states toward the Fermi level. The NFE states are held in the 2D plane of borophene, rather than in the vacuum region as observed in other nanostructures. Furthermore the borophene can provide a rare prototype to further study novel NFE behaviors, which may have potential applications on transport or field emission nanodevices based on boron., Comment: 4 figures

Published
2019

7. Capsaicin acts as a novel NRF2 agonist to suppress ethanol induced gastric mucosa oxidative damage by directly disrupting the KEAP1-NRF2 interaction

Author

Gao, Xiaoning, primary, Guo, WuYan, additional, Liu, Peiyuan, additional, Yuwen, Mingyue, additional, Liu, Zixiang, additional, Tan, Ruyang, additional, Liu, Kairui, additional, Yang, Zhiru, additional, Ba, Junli, additional, Bai, Xue, additional, Shama, Shiti, additional, Tang, Cong, additional, Miao, Kai, additional, Pei, Haozhi, additional, Liu, Liren, additional, Zhu, Cheng, additional, Wang, Tao, additional, Zhang, Bo, additional, and Kang, Jun, additional

Published
2024
Full Text
View/download PDF

8. Amorphizing noble metal chalcogenide catalysts at the single-layer limit towards hydrogen production

Author

He, Yongmin, Liu, Liren, Zhu, Chao, Guo, Shasha, Golani, Prafful, Koo, Bonhyeong, Tang, Pengyi, Zhao, Zhiqiang, Xu, Manzhang, Zhu, Chao, Yu, Peng, Zhou, Xin, Gao, Caitian, Wang, Xuewen, Shi, Zude, Zheng, Lu, Yang, Jiefu, Shin, Byungha, Arbiol, Jordi, Duan, Huigao, Du, Yonghua, Heggen, Marc, Dunin-Borkowski, Rafal E., Guo, Wanlin, Wang, Qi Jie, Zhang, Zhuhua, and Liu, Zheng

Published
2022
Full Text
View/download PDF

12. Prevention and control of low oxygen and high carbon monoxide in shallow buried depth easy spontaneous combustion coal seam working face

Author

LIU Liren

Subjects
spontaneous combustion, upper corner, low oxygen and high carbon monoxide, goaf, negative pressure, Mining engineering. Metallurgy, TN1-997
Abstract

Low oxygen and high carbon monoxide often appears in the upper corner of the surface of shallow buried coal seam mining. This paper analyzes in detail the reasons for the phenomenon of low oxygen and high carbon monoxide in the upper corner of the comprehensive mining surface of Sandaogou Coal Mine. By adopting measures such as forecasting of spontaneous combustion, adjusting the ventilation system of the working surface, reducing the ventilation resistance of the mine, reducing the air pressure of the main ventilators, strengthening the plugging up and down the well, reducing coal retention in the empty mining area, accelerating the speed of the working surface, and strengthening the sealing management of the empty mining area and nitrogen injection in the empty mining area, it effectively solves the phenomenon of low oxygen and high carbon monoxide in the upper corner during the recovery of the comprehensive mining face, and ensures the safe recovery of the working face.

Published
2021
Full Text
View/download PDF

13. Group superatoms: A new concept in cluster science.

Author

Zhao, Boyi, Xia, Shan, Yu, Zhen, Tian, Jingwen, and Liu, Liren

Subjects
CONDUCTION electrons, CHEMICAL bonds, ATOMIC clusters, MOLECULAR shapes, LANDSCAPE design
Abstract

A promising research area in nanomaterials is the use of superatomic clusters as building blocks for creating novel molecules or materials with tailored properties. However, assembling these superatoms into functional materials is challenging, and a thorough understanding of this process is still lacking. In this study, we introduce a new concept called the "superatomic family," which refers to superatoms that share similar valence electron structures but differ in size. We demonstrate this concept with the synthesized [Au6{Ni3(CO)6}4]2− cluster and the designed [Au16{Ni6(CO)10}4]2− and [Au31{Ni10(CO)15}4]5− clusters. These serve as analogs to simple hydrocarbons, such as methane (CH4), silicon hydride (SiH4), and germanium hydride (GeH4). In these supermolecular structures, the central cores of Au6, Au16, and Au31 exhibit the formation of superatomic SP3 hybridized orbitals, which influence the molecular shape and bonding. Moreover, we explored superatomic bonding involving SP3–SP3 hybridized cores, representing a single superatomic bond between members of the superatomic family, analogous to CH3–SiH3 bonds. By integrating the concept of group superatoms into the Lewis structure framework, we present a powerful approach for predicting and engineering cluster properties, thus opening a vast landscape of nanomaterial design possibilities. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

33. Amorphizing noble metal chalcogenide catalysts at the single-layer limit towards hydrogen production

Author

National Research Foundation Singapore, National Key Research and Development Program (China), Generalitat de Catalunya, Ministerio de Ciencia e Innovación (España), European Commission, He, Yongmin, Liu, Liren, Zhu, Chao, Guo, Shasha, Golani, Prafful, Koo, Bonhyeong, Tang, Peng-Yi, Zhao, Zhiqiang, Xu, Manzhang, Yu, Peng, Zhou, Xin, Gao, Caitian, Wang, Xuewen, Shi, Zude, Zheng, Lu, Yang, Jiefu, Shin, Byungha, Arbiol, Jordi, Duan, Huigao, Du, Yonghua, Heggen, Marc, Dunin-Borkowski, Rafal E., Guo, Wanlin, Wang, Qi Jie, Zhang, Zhuahua, Liu, Zheng, National Research Foundation Singapore, National Key Research and Development Program (China), Generalitat de Catalunya, Ministerio de Ciencia e Innovación (España), European Commission, He, Yongmin, Liu, Liren, Zhu, Chao, Guo, Shasha, Golani, Prafful, Koo, Bonhyeong, Tang, Peng-Yi, Zhao, Zhiqiang, Xu, Manzhang, Yu, Peng, Zhou, Xin, Gao, Caitian, Wang, Xuewen, Shi, Zude, Zheng, Lu, Yang, Jiefu, Shin, Byungha, Arbiol, Jordi, Duan, Huigao, Du, Yonghua, Heggen, Marc, Dunin-Borkowski, Rafal E., Guo, Wanlin, Wang, Qi Jie, Zhang, Zhuahua, and Liu, Zheng

Abstract

Rational design of noble metal catalysts with the potential to leverage efficiency is vital for industrial applications. Such an ultimate atom-utilization efficiency can be achieved when all noble metal atoms exclusively contribute to catalysis. Here, we demonstrate the fabrication of a wafer-size amorphous PtSe film on a SiO substate via a low-temperature amorphization strategy, which offers single-atom-layer Pt catalysts with high atom-utilization efficiency (~26 wt%). This amorphous PtSe (1.2 < x < 1.3) behaves as a fully activated surface, accessible to catalytic reactions, and features a nearly 100% current density relative to a pure Pt surface and reliable production of sustained high-flux hydrogen over a 2 inch wafer as a proof-of-concept. Furthermore, an electrolyser is demonstrated to generate a high current density of 1,000 mA cm. Such an amorphization strategy is potentially extendable to other noble metals, including the Pd, Ir, Os, Rh and Ru elements, demonstrating the universality of single-atom-layer catalysts. [Figure not available: see fulltext.]

Published
2022

Catalog

Books, media, physical & digital resources
See catalog results