ORCID Profile
0000-0002-3734-5729
Current Organisations
Rutgers The State University of New Jersey
,
University of North Carolina at Chapel Hill
,
Wuhan Institute of Technology
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Publisher: Elsevier BV
Date: 2022
Publisher: Elsevier BV
Date: 04-2017
Publisher: Hindawi Limited
Date: 02-2020
DOI: 10.1155/2020/5251431
Abstract: As an important chemical raw material, ammonia is mainly produced by the traditional Haber-Bosch process, which has certain limitations such as high energy consumption, high safety responsibility, and severe pollution, thereby having negative impacts on ecosystem. The synthesis of ammonia from dinitrogen at ambient temperature and pressure is one of the most attractive topics in the field of chemistry. As a new two-dimensional nanomaterial, MXene has excellent electrochemical properties and is a potential catalytic material for electrocatalytic nitrogen fixation. In this review, we firstly introduce the crystal, electronic structures of two-dimensional MXenes and summarize the synthesis methods, N 2 reduction, and simulation computation, as well as have insight into the challenges of MXenes, which shed light on the development of highly efficient MXene-based electrocatalysts in the reduction of N 2 to ammonia.
Publisher: Elsevier BV
Date: 02-2018
Publisher: MDPI AG
Date: 28-07-2022
DOI: 10.3390/NANO12152586
Abstract: Biochars are considered as promising materials in energy storage and environmental remediation because of their unique physicochemical properties and low cost. However, the fabrication of multifunctional biochar materials with a well-developed hierarchical porous structure as well as self-doped functionalities via a facile strategy remains a challenge. Herein, we demonstrate a heteroatom-doped porous biochar, prepared by a hydrothermal pretreatment followed by a molten salt activation route. With the creation of a high specific surface area (1501.9 m2/g), a hierarchical porous structure, and the incorporation of oxygen-/nitrogen-functional groups, the as-prepared biochar (BC-24) exhibits great potential for supercapacitor application and organic pollutant elimination. The assembled biochar electrode delivers a specific capacitance of 378 F/g at 0.2 A/g with a good rate capability of 198 F/g at 10 A/g, and excellent cycling stability with 94.5% capacitance retention after 10,000 recycles. Moreover, BC-24 also exhibits superior catalytic activity for phenol degradation through peroxydisulfate (PDS) activation. The phenol (0.2 mM) can be effectively absorbed and then completely degraded within only 25 min over a wide pH range with low catalyst and PDS dosages. More importantly, TOC analysis indicates 81.7% of the phenol is mineralized within 60 min, confirming the effectiveness of the BC-24/PDS system. Quenching experiments and EPR measurements reveal that SO4·− and ·OH as well as 1O2 are involved in the phenol degradation, while the non-radical pathway plays the dominant role. This study provides valuable insights into the preparation of cost-effective carbon materials for supercapacitor application and organic contaminant remediation.
Publisher: Springer Science and Business Media LLC
Date: 10-2018
Publisher: Elsevier BV
Date: 2017
Publisher: Elsevier BV
Date: 11-2019
DOI: 10.1016/J.JCIS.2019.08.008
Abstract: In this work, 2D/2D tungsten trioxide (WO
Publisher: Elsevier BV
Date: 11-2023
Publisher: MDPI AG
Date: 18-07-2022
DOI: 10.3390/NANO12142455
Abstract: Developing suitable photocatalysts for the oxygen evolution reaction (OER) is still a challenging issue for efficient water splitting due to the high requirements to create a significant impact on water splitting reaction kinetics. Herein,
Publisher: Elsevier BV
Date: 06-2021
Publisher: Elsevier BV
Date: 11-2019
DOI: 10.1016/J.JCIS.2019.07.103
Abstract: An Ag/AgCl/NH
Publisher: Elsevier BV
Date: 03-2019
Publisher: Elsevier BV
Date: 06-2017
DOI: 10.1016/J.JCIS.2017.01.121
Abstract: It finds that CQDs synthesized by hydrothermal method possess obvious upconversion properties that could transfer low energy photons to high energy photons, resulting in enhanced visible light response and utilization. Herein, carbon quantum dots (CQDs) modified TiO
Publisher: International Union of Crystallography (IUCr)
Date: 31-08-2016
DOI: 10.1107/S2059798316012225
Abstract: Modern crystal structure refinement programs rely on geometry restraints to overcome the challenge of a low data-to-parameter ratio. While the classical Engh and Huber restraints work well for standard amino-acid residues, the chemical complexity of small-molecule ligands presents a particular challenge. Most current approaches either limit ligand restraints to those that can be readily described in the Crystallographic Information File (CIF) format, thus sacrificing chemical flexibility and energetic accuracy, or they employ protocols that substantially lengthen the refinement time, potentially hindering rapid automated refinement workflows. PHENIX – AFITT refinement uses a full molecular-mechanics force field for user-selected small-molecule ligands during refinement, eliminating the potentially difficult problem of finding or generating high-quality geometry restraints. It is fully integrated with a standard refinement protocol and requires practically no additional steps from the user, making it ideal for high-throughput workflows. PHENIX – AFITT refinements also handle multiple ligands in a single model, alternate conformations and covalently bound ligands. Here, the results of combining AFITT and the PHENIX software suite on a data set of 189 protein–ligand PDB structures are presented. Refinements using PHENIX – AFITT significantly reduce ligand conformational energy and lead to improved geometries without detriment to the fit to the experimental data. For the data presented, PHENIX – AFITT refinements result in more chemically accurate models for small-molecule ligands.
Publisher: Elsevier BV
Date: 03-2018
DOI: 10.1016/J.JCIS.2017.12.066
Abstract: New photocatalytic materials for stable reduction and/or oxidization of water by harvesting a wider range of visible light are indispensable to achieve high practical efficiency in artificial photosynthesis. In this work, we prepared 2D WO
Location: United States of America
Location: United States of America
No related grants have been discovered for Jun Ke.