Qunhong Weng

Hunan University

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Dmitri Golberg

National Institute for Materials Science

Yoshio Bando

King Saud University

Xi Wang

Beijing Jiaotong University

Xuebin Wang

Nanjing University

Xiangfen Jiang

Nanjing University of Aeronautics and Astronautics

Chao Zhang

Tianjin University of Technology

Yanming Xue

Hebei University of Technology

Dai‐Ming Tang

National Institute for Materials Science

Pengcheng Dai

China University of Petroleum, East China

Shuo Xiang

PLA Army Service Academy

Cooperative Institutions

Hunan University

Chinese Academy of Sciences

National Institute for Materials Science

Central South University

Leibniz Institute for Solid State and Materials Research

Xiamen University

Huazhong University of Science and Technology

Beijing Jiaotong University

Sichuan University

University of Science and Technology of China

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Electronic and Optical Properties of 2D Materials Constructed from Light Atoms

Advanced Materials (2018)

Qunhong Weng Guodong Li Xinliang Feng Kornelius Nielsch Dmitri Golberg

Boron, carbon, nitrogen, and oxygen atoms can form various building blocks for further construction of structurally well-defined 2D materials (2DMs). Both in theory and experiment, it has been documented that the electronic structures and optical properties of 2DMs are well tunable through a rational design of the material structure. Here, the recent progress on 2DMs that are composed of B, C, N, and O elements is introduced, including borophene, graphene, h-BN, g-C3 N4 , organic 2D polymers (2DPs), etc. Attention is put on the band structure/bandgap engineering for these materials through a variety of methodologies, such as chemical modifications, layer number and atomic structure control, change of conjugation degree, etc. The optical properties, such as photoluminescence, thermoluminescence, single photon emission, as well as the associated applications in bioimaging and sensing, are discussed in detail and highlighted.

10.1002/adma.201801600

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Citations (40)

High-throughput fabrication of strutted graphene by ammonium-assisted chemical blowing for high-performance supercapacitors

Science & Engineering Faculty (2015)

Xiangfen Jiang Xuebin Wang Pengcheng Dai Xia Li Qunhong Weng

Abstract Three dimensional graphenes are most desired to deliver the unique nano-sized properties of graphenes to the macro-scale, yet their practical production remains insufficient. Herein we establish a general synthesis approach, i.e. ammonium-assisted chemical blowing via foaming sucrose into the bubble networks of sucrose-derived polymers, to effectively produce three dimensional strutted graphenes (SGs). SG consists of interconnected mono-/few-layered graphene membranes scaffolded by graphitic struts without restacking or agglomeration, which thus fully exposes the huge surface and possesses appropriate porosity. The SG is further applied as additive/binder-free electrodes for supercapacitors, which realize the high energy density of 50 W h kg−1 and the high maximum-power–density of 340 kW kg−1 due to the large surface area, excellent interconnectivity and porosity. The mass-produced self-supporting SG would open up a wide horizon and enable the abundant potentials of graphenes for promising large-scale applications.

Interconnectivity

Lotus effect

Specific surface area

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Recent Progress on Fabrications and Applications of Boron Nitride Nanomaterials: A Review

Science & Engineering Faculty (2015)

Xiangfen Jiang Qunhong Weng Xuebin Wang Li Xia Jun Zhang

Boron nitride (BN) nanostructures with complementary functions to their carbon counterparts are one of the most intriguing nanomaterials. Here we devote a compact review on the syntheses of BN nanomaterials: typical zero-dimensional (0D) fullerenes and nanoparticles, one-dimensional (1D) nanotubes and nanoribbons, two-dimensional (2D) nanosheets as well as three-dimensional (3D) nanoporous BN. Combining low-dimensional quantum confinement and surface effects with unique physical and chemical properties of BN, e.g. excellent electric insulation, wide band gap, and high chemical and thermal stability, BN nanomaterials have drawn particular attention in a variety of potential applications, e.g. luminescence, functional composites, hydrogen accumulators, and advanced insulators, which are also reviewed.

Nanomaterials

Nanoporous

Graphitic carbon nitride

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Inside Cover: Preparation and Hydrogen Sorption Performances of BCNO Porous Microbelts with Ultra‐Narrow and Tunable Pore Widths (Chem. Asian J. 12/2013)

Chemistry - An Asian Journal (2013)

Qunhong Weng Xuebin Wang Xi Wang Dequan Liu Xiangfen Jiang

Hydrogen Storage Microporous materials simultaneously constructed by boron (B), carbon (C), nitrogen (N), and oxygen (O) were prepared and confirmed to show ultra-narrow, tunable pore widths and different behavior in terms of H2 storage. In their Communication on page 2936 ff. (highlighted on the Inside Cover), Qunhong Weng, Dmitri Golberg et al. report that the BCNO porous materials synthesized by a simple one-step reaction exhibit similar belt-like morphologies, chemical compositions, phase ordering, specific surface areas (1040–1070 m2 g−1), and pore volumes. However, the differences in the pore widths (0.4–1.1 nm) and surface chemical environments lead to the distinct H2 sorption behaviors of these materials.

Carbon fibers

10.1002/asia.201390044

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Flexible and Wearable Zinc-Ion Hybrid Supercapacitor Based on Double-Crosslinked Hydrogel for Self-Powered Sensor Application

Materials (2022)

Xi Wen Kang Jiang Heng Zhang Hua Huang Linyu Yang

The rapidly growing Internet of Things (IoT) has brought about great demand for high-performance sensors as well as power supply devices for those sensors. In this respect, the integration of sensors and energy storage devices, or the development of multifunctional devices having both energy storage and sensing properties, is of great interest in the development of compact sensing systems. As a proof of concept, a zinc-ion hybrid supercapacitor (ZHS) based on a double-crosslinked hydrogel electrolyte is developed in this work, which can be employed not only as an energy storage device, but also as a self-powered sensor for human movement and breathing detection. The ZHS delivers a capacitance of 779 F g-1 and an energy density of 0.32 mWh cm-2 at a power density of 0.34 mW cm-2, as well as sensitive resistance response to strain. Our work provides a useful basis for future designs of self-powered sensing devices and function-integrated systems.

Power density

10.3390/ma15051767

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Citations (12)

Boron Nitride Nanosheets: novel Syntheses and Applications in polymeric Composites

Journal of Physics Conference Series (2013)

Xuebin Wang Chunyi Zhi Qunhong Weng Yoshio Bando Dmitri Golberg

Two-dimensional (2D) boron nitride (BN) nanosheets, the rising material stars, have unique properties and amazing functionalities. The concise history of diverse synthesis routes of BN nanosheets is briefly summarized here; and the recent development towards mass production of BN nanosheets, i.e. "chemical blowing" technique relying on blowing molten polymer precursors into large polymeric bubbles and subsequent annealing into BN bubbles/nanosheets, is focused on. The abundant BN nanosheets enable their applications, especially in the representative polymeric composites with BN nanosheet additives, as particularly highlighted in this review. The highly thermoconductive insulating BN-filled composites are thus envisaged as high-performance packaging materials for electrical circuits.

Nanosheet

10.1088/1742-6596/471/1/012003

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Citations (73)

Design of BN porous sheets with richly exposed (002) plane edges and their application as TiO2 visible light sensitizer

Science & Engineering Faculty (2015)

Qunhong Weng Yusuke Ide Xuebin Wang Xi Wang Chao Zhang

Abstract Hexagonal boron nitride (h-BN) exhibits a wide band gap of ~5.5 eV, and is well known for its high thermal and chemical inertness. Thus, it is commonly considered that h-BN is inappropriate for photocatalysis and photovoltaic conversion applications. Here, we show that the rationally designed BN porous sheets (BNPS) with richly exposed (002) plane edges (functionalized with hydroxyl groups) exhibit wide-spectrum light absorptions in both UV and visible light ranges. Such intriguing property is seldom reported for any BN materials in experiments. After hybridizing with anatase TiO2 nanoparticles, the resultant TiO2/BNPS composite becomes a potent visible-light photocatalyst for organic compound oxidative degradations. These results confirm that the designed BNPS can efficiently act as an inorganic sensitizer to induce the visible light response of TiO2.

Visible spectrum

Hexagonal boron nitride

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Recent Progress on Fabrications and Applications of Boron Nitride Nanomaterials: A Review

Journal of Material Science and Technology (2015)

Xiangfen Jiang Qunhong Weng Xuebin Wang Xia Li Jun Zhang

Nanomaterials

Nanoporous

Graphitic carbon nitride

10.1016/j.jmst.2014.12.008

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Citations (334)

Age differences in thermal comfort and sensitivity under contact local body cooling

Building and Environment (2024)

Huice Mao Hang Yu Yin Tang Qunhong Weng Kege Zhang

10.1016/j.buildenv.2024.112355

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Citations (1)

Boron Dopants in Red-Emitting B and N Co-Doped Carbon Quantum Dots Enable Targeted Imaging of Lysosomes

ACS Applied Materials & Interfaces (2023)

Yuxian Deng Yanyang Long A‐Ling Song Haiyan Wang Shuo Xiang

Lysosomes are of great significance to cell growth, metabolism, and survival, as they independently maintain acidity and regulate various balances in cells. Therefore, it is essential to develop advanced probes for lysosome visualization and live tracking. Herein, a type of lysosome-targeting probe based on boron (B) and nitrogen (N) co-doped carbon quantum dots (B/N-CQDs) is presented, which exhibits red emission at 618 nm, high quantum yield (28%), and excellent fluorescence stability (97% at 1 h). These B/N-CQDs are prepared by a novel and green solid-state reaction and purified using a simple extraction process without additional chemical modifications. It is found that the boron dopants in the structure play a crucial role in the resultant lysosome-specific targeting property through borate esterification between boronic acid groups in the sample and diol structures in glycoproteins. This can be applied as a powerful tool for cell apoptosis, necrosis, and endosomal escape tracking. This work not only offers a new concept for targeted subcellular probe designs via chemical doping but also demonstrates the feasibility of these tools for analyzing complex cellular physiological activities.

Carbon fibers

10.1021/acsami.3c01705

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Citations (25)