1
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Rasyotra A, Thakur A, Mandalia R, Ranganathan R, Jasuja K. Nitrogen adsorption via charge transfer on vacancies created during surfactant assisted exfoliation of TiB 2. NANOSCALE 2023; 15:8204-8216. [PMID: 36967617 DOI: 10.1039/d2nr06676a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Titanium diboride (TiB2), a layered ceramic material, comprised of titanium atoms sandwiched in between honeycomb planes of boron atoms, exhibits a promising structure to utilize the rich chemistry offered by the synergy of titanium and boron. TiB2 has been primarily investigated and applied in its bulk form. This perspective is, however, fast evolving with a number of efforts aimed at exfoliating TiB2. Here, we show that it is possible to delaminate TiB2 into ultrathin, minimally functionalized nanosheets with the aid of surfactants. These nanosheets exhibit crystalline nature and their chemical analysis reveals vacant sites within the nanosheets. These vacancies facilitate the chemisorption of N2 onto the TiB2 nanosheets under ambient conditions without the aid of any energy, this finding was unexpected. This remarkable activity of TiB2 nanosheets is attributed to vacancies and the Ti-B synergy, which enhance the adsorption and activation of N2. We obtained supplemental insights into the N2 adsorption by Density Functional Theory (DFT) studies, which reveal how charge transfer among Ti, B, and N2 results in N2 adsorption. The DFT studies also show that nanosheets having more vacancies result in increased adsorption when compared with nanosheets having less vacancies and bulk TiB2.
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Affiliation(s)
- Anshul Rasyotra
- Discipline of Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India.
| | - Anupma Thakur
- Discipline of Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India.
| | - Raviraj Mandalia
- Discipline of Materials Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India
| | - Raghavan Ranganathan
- Discipline of Materials Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India
| | - Kabeer Jasuja
- Discipline of Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India.
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2
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Qu J, Li S, Zhong B, Deng Z, Shu Y, Yang X, Cai Y, Hu J, Li CM. Two-dimensional nanomaterials: synthesis and applications in photothermal catalysis. NANOSCALE 2023; 15:2455-2469. [PMID: 36655847 DOI: 10.1039/d2nr06092b] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Photothermal catalysis, as one of the emerging technologies with synergistic effects of photochemistry and thermochemistry, is highly attractive in the fields of environment and energy. Two-dimensional (2D) nanomaterials have received extensive attention toward photothermal catalysis because of their ultrathin layer structures, superior physical and optical properties, and high surface areas. These merits are beneficial for shortening the transfer distance of charge carriers, improving the efficiency of solar to thermal, and providing a great opportunity for the development of photothermal chemistry. In this review, we have summarized the state-of-art advances in various 2D nanomaterials with emphasis on the driving force and relevant mechanism of photothermal catalysis, including the involved three types, namely, localized surface plasmonic resonance (LSPR), nonradiative relaxation, and thermal vibrations of molecules. Moreover, the synthesis strategies of 2D materials and their photothermal applications in carbon dioxide (CO2) conversion, hydrogen (H2) production, volatile organic compounds (VOCs) degradation, and water (H2O) purification have been discussed in detail. Ultimately, the existing challenges and prospects of future development in the field are proposed. It is believed that this review will afford a great reference for the exploration of the high-efficiency 2D nanomaterials and their structure-activity relationship.
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Affiliation(s)
- Jiafu Qu
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Songqi Li
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Bailing Zhong
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Zhiyuan Deng
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Yinying Shu
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Xiaogang Yang
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Yahui Cai
- College of Materials Science and Engineering, Nanjing Forestry University, No. 159 Longpan Road, Nanjing, 210037, P.R. China
| | - Jundie Hu
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Chang Ming Li
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
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3
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Bao Y, Du S, Shibata K, Guo X, Kamakura Y, Feng Z, Huang Y, Ishitani O, Maeda K, Zhang F. Layered β-ZrNBr Nitro-Halide as Multifunctional Photocatalyst for Water Splitting and CO 2 Reduction. Angew Chem Int Ed Engl 2023; 62:e202214273. [PMID: 36428218 DOI: 10.1002/anie.202214273] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 11/27/2022]
Abstract
Developing mixed-anion semiconductors for solar fuel production has inspired extensive interest, but the nitrohalide-based photocatalyst is still in shortage. Here we report a layered nitro-halide β-ZrNBr with a narrow band gap of ca. 2.3 eV and low defect density to exhibit multifunctionalities for photocatalytic water reduction, water oxidation and CO2 reduction under visible-light irradiation. As confirmed by the results of electron paramagnetic resonance (EPR) and density functional theory (DFT) calculations, the formation of anion vacancies in the nitro-halide photocatalyst was inhibited due to its relatively high formation energy. Furthermore, performance of β-ZrNBr can be effectively promoted by a simple exfoliation into nanosheets to shorten the carrier transfer distance as well as to promote charge separation. Our work extends the territory of functional photocatalysts into the nitro-halide, which opens a new avenue for fabricating efficient artificial photosynthesis.
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Affiliation(s)
- Yunfeng Bao
- State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian, 116023, Liaoning, China
| | - Shiwen Du
- State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian, 116023, Liaoning, China
| | - Kengo Shibata
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Xiangyang Guo
- State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian, 116023, Liaoning, China
| | - Yoshinobu Kamakura
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Zhaochi Feng
- State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian, 116023, Liaoning, China
| | - Yanqiang Huang
- State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian, 116023, Liaoning, China
| | - Osamu Ishitani
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Kazuhiko Maeda
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Fuxiang Zhang
- State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian, 116023, Liaoning, China
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4
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Nong H, Wu Q, Tan J, Sun Y, Zheng R, Zhang R, Zhao S, Liu B. Layer-Dependent Raman Spectroscopy and Electronic Applications of Wide-Bandgap 2D Semiconductor β-ZrNCl. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107490. [PMID: 35187848 DOI: 10.1002/smll.202107490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 01/15/2022] [Indexed: 06/14/2023]
Abstract
In recent years, 2D layered semiconductors have received much attention for their potential in next-generation electronics and optoelectronics. Wide-bandgap 2D semiconductors are especially important in the blue and ultraviolet wavelength region, although there are very few 2D materials in this region. Here, monolayer β-type zirconium nitride chloride (β-ZrNCl) is isolated for the first time, which is an air-stable layered material with a bandgap of ≈3.0 eV in bulk. Systematical investigation of layer-dependent Raman scattering of ZrNCl from monolayer, bilayer, to bulk reveals a blueshift of its out-of-plane A1g peak at ≈189 cm-1 . Importantly, this A1g peak is absent in the monolayer, suggesting that it is a fingerprint to quickly identify the monolayer and for the thickness determination of 2D ZrNCl. The back gate field-effect transistor based on few-layer ZrNCl shows a high on/off ratio of 108 . These results suggest the potential of 2D β-ZrNCl for electronic applications.
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Affiliation(s)
- Huiyu Nong
- Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P. R. China
| | - Qinke Wu
- Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P. R. China
| | - Junyang Tan
- Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P. R. China
| | - Yujie Sun
- Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P. R. China
| | - Rongxu Zheng
- Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P. R. China
| | - Rongjie Zhang
- Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P. R. China
| | - Shilong Zhao
- Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P. R. China
| | - Bilu Liu
- Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P. R. China
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5
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Thanikachalam V, Seransenguttuvan B, Jayabharathi J. Versatile Accumulated Surface Plasmon Resonance of Functionalized Nanosilver in Polymer Devices. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c04612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Balu Seransenguttuvan
- Department of Chemistry, Annamalai University, Annamalainagar 608002, Tamil Nadu, India
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6
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Bai J, Sun J, Zhu X, Liu J, Zhang H, Yin XB, Liu L. Enhancement of Solar-Driven Photocatalytic Activity of BiOI Nanosheets through Predominant Exposed High Energy Facets and Vacancy Engineering. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1904783. [PMID: 31943792 DOI: 10.1002/smll.201904783] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 11/27/2019] [Indexed: 06/10/2023]
Abstract
The increasing application of exposed high energy facet is an effective strategy to improve the photocatalytic performance of photocatalysts because the vacancies are beneficial to photocatalytic reaction. Vacancy dominates numerous distinct properties of semiconductor materials and thus plays a conclusive role in the photocatalysis applications. In this work, two kinds of BiOI nanomaterials with different vacancies are synthesized via a facile solvothermal method. The positron annihilation analysis shows that the thinner BiOI nanosheets possess larger-sized vacancy than BiOI nanoplates. Thus, BiOI nanosheets show the enhanced separation efficiency of electron-hole pairs and adsorption ability for contaminants under visible light. The results are also validated with the first-principle computation. Therefore, higher photocatalytic activity to the photodegradation of tetracycline is observed from the nanosheets than that obtained from BiOI nanoplates. This work not only arouses attention to vacancies, but also opens up an avenue for precision design of vacancies to prepare novel photocatalytic materials driven under solar light.
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Affiliation(s)
- Jinwu Bai
- Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering and College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Jingyu Sun
- Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering and College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Xiaohe Zhu
- Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering and College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Jiandang Liu
- State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China (USTC), Hefei, Anhui, 230026, P. R. China
| | - Haijun Zhang
- Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering and College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
- Center for aircraft fire and emergency, Civil Aviation University of China, Tianjin, 300300, P. R. China
| | - Xue-Bo Yin
- Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering and College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Lu Liu
- Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering and College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
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7
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Wang N, Ye G, Hu G, Meng F, Shang C, Shi M, Ying J, Chen X. Absence of van der Waals Gap in Ternary Thorium Nitride ThNF and ThNCl. Inorg Chem 2019; 58:9897-9903. [PMID: 31291102 DOI: 10.1021/acs.inorgchem.9b01050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two kinds of ternary thorium nitride compounds, ThNF and ThNCl, are synthesized. Via the refinement of X-ray diffraction patterns, the accurate crystal structure of the two compounds is solved. Although ThNF and ThNCl share a similar structure with MNX (M = Ti, Zr, Hf; X = Cl, Br) compounds, the interaction between adjacent ThNF and ThNCl layers is not a van der Waals gap. For ThNF, the strong electronegativity of F ions leads to the bonding of Th to the F both in the nearest neighbor layer and the next nearest neighbor layer, which results in the absence of a van der Waals gap between ThNF layers. However, for ThNCl, the reason for the absence of a van der Waals gap could be attributed to the large Th-Cl bond length due to the partially covalent Th-Cl bond as well as the flat ThN layer. It is the absence of van der Waals gap that results in the failure of intercalating cations into ThNF and ThNCl. Our result reveals the reason for unsuccessful intercalation in ThNF and ThNCl, thereby providing a deeper understanding for the interlayer interaction in ternary layer structures in metal nitride halides.
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Affiliation(s)
- Naizhou Wang
- Key Laboratory of Strongly Coupled Quantum Matter Physics, Chinese Academy of Sciences, Hefei National Laboratory for Physical Sciences at Microscale, and Department of Physics , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Guojun Ye
- Key Laboratory of Strongly Coupled Quantum Matter Physics, Chinese Academy of Sciences, Hefei National Laboratory for Physical Sciences at Microscale, and Department of Physics , University of Science and Technology of China , Hefei , Anhui 230026 , China.,Collaborative Innovation Center of Advanced Microstructures , Nanjing University , Nanjing 210093 , China
| | - Guobing Hu
- Key Laboratory of Strongly Coupled Quantum Matter Physics, Chinese Academy of Sciences, Hefei National Laboratory for Physical Sciences at Microscale, and Department of Physics , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Fanbao Meng
- Key Laboratory of Strongly Coupled Quantum Matter Physics, Chinese Academy of Sciences, Hefei National Laboratory for Physical Sciences at Microscale, and Department of Physics , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Chao Shang
- Key Laboratory of Strongly Coupled Quantum Matter Physics, Chinese Academy of Sciences, Hefei National Laboratory for Physical Sciences at Microscale, and Department of Physics , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Mengzhu Shi
- Key Laboratory of Strongly Coupled Quantum Matter Physics, Chinese Academy of Sciences, Hefei National Laboratory for Physical Sciences at Microscale, and Department of Physics , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Jianjun Ying
- Key Laboratory of Strongly Coupled Quantum Matter Physics, Chinese Academy of Sciences, Hefei National Laboratory for Physical Sciences at Microscale, and Department of Physics , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Xianhui Chen
- Key Laboratory of Strongly Coupled Quantum Matter Physics, Chinese Academy of Sciences, Hefei National Laboratory for Physical Sciences at Microscale, and Department of Physics , University of Science and Technology of China , Hefei , Anhui 230026 , China.,Collaborative Innovation Center of Advanced Microstructures , Nanjing University , Nanjing 210093 , China.,CAS Center for Excellence in Superconducting Electronics (CENSE) , Shanghai 200050 , China.,CAS Center for Excellence in Quantum Information and Quantum Physics , Hefei , Anhui 230026 , China
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8
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Lee YV, Tian B. Learning from Solar Energy Conversion: Biointerfaces for Artificial Photosynthesis and Biological Modulation. NANO LETTERS 2019; 19:2189-2197. [PMID: 30888185 PMCID: PMC6800084 DOI: 10.1021/acs.nanolett.9b00388] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/10/2019] [Indexed: 05/06/2023]
Abstract
Three seemingly distinct directions of nanomaterials research, photovoltaics, biofuel production, and biological modulation, have been sequentially developed over the past several decades. In this Mini Review, we discuss how the insights gleaned from nanomaterials-based solar energy conversion can be adapted to biointerface designs. Because of their size- and shape-dependent optical properties and excellent synthetic control, nanomaterials have shown unique technological advantages as the light absorbers or energy transducers. Biocompatible nanomaterials have also been incorporated into biological systems including biomolecules, bacteria, and eukaryotic cells for a large collection of fundamental studies and applications. For the photocatalytic biofuel production, either isolated bacterial enzymes or the entire bacteria have been hybridized with the nanomaterials, where functions from both parts are synergistically integrated. Likewise, interfacing nanomaterials with eukaryotic systems, whether in individual cells or tissues, has enabled optical modulation of cellular behavior and the construction of active cellular materials. Here we survey different approaches in which nanomaterials are used to elicit electrical or mechanical changes in single cells or cellular assemblies via photoelectrochemical or photothermal processes. We end this Mini Review with the discussion of future nongenetic modulation at the intracellular level.
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Affiliation(s)
- Youjin V. Lee
- Chemistry Department, The University of Chicago, Chicago, Illinois 60637, United States
| | - Bozhi Tian
- Chemistry Department, The University of Chicago, Chicago, Illinois 60637, United States
- The James Franck Institute, The University of Chicago, Chicago, Illinois 60637, United States
- The Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, United States
- Corresponding Author
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9
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Guan H, Ding T, Zhou W, Wang Z, Zhang J, Cai K. Hexagonal polypyrrole nanosheets from interface driven heterogeneous hybridization and self-assembly for photothermal cancer treatment. Chem Commun (Camb) 2019; 55:4359-4362. [DOI: 10.1039/c9cc00809h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Hexagonal-shaped polypyrrole (PPy) nanosheets were fabricated by the generation and anisotropic self-assembly of FeOOH–PPy heterostructures for photothermal cancer treatment.
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Affiliation(s)
- Haidi Guan
- Key Laboratory of Biorheological Science and Technology
- Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
| | - Tao Ding
- Key Laboratory of Biorheological Science and Technology
- Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
| | - Wei Zhou
- Key Laboratory of Biorheological Science and Technology
- Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
| | - Zhenqiang Wang
- Key Laboratory of Biorheological Science and Technology
- Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
| | - Jixi Zhang
- Key Laboratory of Biorheological Science and Technology
- Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology
- Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
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10
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Zhou W, Liu X, Hu X, Zhang S, Zhi C, Cai B, Guo S, Song X, Li Z, Zeng H. Band offsets in new BN/BX (X = P, As, Sb) lateral heterostructures based on bond-orbital theory. NANOSCALE 2018; 10:15918-15925. [PMID: 30109344 DOI: 10.1039/c8nr05194a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Identifying heterostructures with tunable band alignments remains a difficult challenge. Here, based on bond-orbital theory, we propose a series of new BN/BX (X = P, As, Sb) lateral heterostructures (LHS). Our first principles calculations reveal that the LHS interlines have a substantial impact on the electronic properties. Importantly, we start with the chemical concepts, such as bond length and strength as well as orbital overlap interaction, in an attempt to thoroughly investigate the electronic properties, namely the band offset, the band gap (Eg) and the state of the energy level. We demonstrate that the newly designed BN/BX LHS have profound implications for developing advanced optoelectronics, such as high-performance light-emitting diodes and lasers. Furthermore, the new BN/BX LHS designed from the chemical viewpoint can shed new light on overcoming the enormous hurdle of ineffective and laborious material design.
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Affiliation(s)
- Wenhan Zhou
- MIIT Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, Institute of Optoelectronics & Nanomaterials, Nanjing University of Science and Technology, Nanjing, 210094, China. zeng
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11
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Guo SQ, Zhu XH, Zhang HJ, Gu BC, Chen W, Liu L, Alvarez PJJ. Improving Photocatalytic Water Treatment through Nanocrystal Engineering: Mesoporous Nanosheet-Assembled 3D BiOCl Hierarchical Nanostructures That Induce Unprecedented Large Vacancies. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:6872-6880. [PMID: 29722537 DOI: 10.1021/acs.est.8b00352] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Vacancy control can significantly enhance the performance of photocatalytic semiconductors for water purification. However, little is known about the mechanisms and approaches that could generate stable large vacancies. Here, we report a new mechanism to induce vacancy formation on nanocrystals for enhanced photocatalytic activity: the introduction of mesopores. We synthesized two nanosheet-assembled hierarchical 3D BiOCl mesoporous nanostructures with similar morphology and exposed facets but different nanosheet thickness. Positron annihilation analysis detected unprecedentedly large VBi‴ VO•• VBi‴ VO•• VBi‴ vacancy associates (as well as VBi‴ VO•• VBi‴) on BiOCl assembled from 3-6 nm nanosheets but only VBi‴ VO•• VBi‴ vacancy associates on BiOCl assembled from thicker (10-20 nm) nanosheets. Comparison of vacancy properties with 2D ultrathin 2.7 nm nanosheets (with VBi‴ VO•• VBi‴ and VBi‴) indicates that nanosheet thinness alone cannot explain the formation of such large atom vacancies. On the basis of density functional theory computations of formation energy of isolated Bi vacancy, we show that mesopores facilitate the formation of large vacancies to counterbalance thermodynamic instability caused by incompletely coordinated Bi and O atoms along the mesopore perimeters. We corroborate that the extraordinarily large VBi‴ VO•• VBi‴ VO•• VBi‴ vacancy associates facilitate photoexcitation of electrons and prevent the recombination of electron-hole pairs, which significantly enhances photocatalytic activity. This is demonstrated by the rapid mineralization of bisphenol A (10-5 M) with low photocatalyst loading (1 g L-1), as well as enhanced bacterial disinfection. Improved electron-hole separation is also corroborated by enhanced photocatalytic reduction of nitrate.
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Affiliation(s)
- Sheng-Qi Guo
- Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering , Nankai University , Tianjin 300350 , China
- Tianjin Key Lab for Photoelectric Materials & Devices, School of Materials Science and Engineering , Tianjin University of Technology , Tianjin 300384 , China
| | - Xiao-He Zhu
- Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering , Nankai University , Tianjin 300350 , China
| | - Hai-Jun Zhang
- School of Physics and Materials Science , Anhui University , Hefei , Anhui 230039 , China
| | - Bing-Chuan Gu
- State Key Laboratory of Particle Detection and Electronics , University of Science & Technology of China , Hefei , Anhui 230026 , China
| | - Wei Chen
- Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering , Nankai University , Tianjin 300350 , China
| | - Lu Liu
- Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering , Nankai University , Tianjin 300350 , China
| | - Pedro J J Alvarez
- Department of Civil and Environmental Engineering , Rice University , Houston , Texas 77005 , United States
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12
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Zhou W, Guo S, Zhang S, Zhu Z, Song X, Niu T, Zhang K, Liu X, Zou Y, Zeng H. DFT coupled with NEGF study of a promising two-dimensional channel material: black phosphorene-type GaTeCl. NANOSCALE 2018; 10:3350-3355. [PMID: 29387855 DOI: 10.1039/c7nr08252e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A stable three-dimensional layered GaTeCl bulk counterpart is first known from experiment since 1980s. In this study, we propose a two-dimensional GaTeCl, the band structure of which has a tendency of intrinsic direct-to-indirect band gap transitions as a result of a decrease in the layer number, while the changes in the band gap value are minor. The GaTeCl monolayer possesses a wide indirect band gap of 3.06 eV and high hole mobility of up to 4710 cm2 V-1 s-1, which, intriguingly, can be converted into direct band-gap semiconductors under a slight tensile strain. The GaTeCl monolayer is calculated to have an ideal cleavage energy of about 32 meV per atom; therefore, the synthesis of GaTeCl monolayer through exfoliation of bulk GaTeCl is available. In this regard, we simulate a monolayer GaTeCl MOSFETs device based on first-principles method quantum transport approach. The underlying device performance could pave the way for it to be a promising candidate as a suitable FET channel material.
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Affiliation(s)
- Wenhan Zhou
- Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, College of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
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13
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Yao J, Zheng Z, Yang G. Layered tin monoselenide as advanced photothermal conversion materials for efficient solar energy-driven water evaporation. NANOSCALE 2018; 10:2876-2886. [PMID: 29367961 DOI: 10.1039/c7nr09229f] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Solar energy-driven water evaporation lays a solid foundation for important photothermal applications such as sterilization, seawater desalination, and electricity generation. Due to the strong light-matter coupling, broad absorption wavelength range, and prominent quantum confinement effect, layered tin monoselenide (SnSe) holds a great potential to effectively harness solar irradiation and convert it to heat energy. In this study, SnSe is successfully deposited on a centimeter-scale nickel foam using a facile one-step pulsed-laser deposition approach. Importantly, the maximum evaporation rate of SnSe-coated nickel foam (SnSe@NF) reaches 0.85 kg m-2 h-1, which is even 21% larger than that obtained with the commercial super blue coating (0.7 kg m-2 h-1) under the same condition. A systematic analysis reveals that its good photothermal conversion capability is attributed to the synergetic effect of multi-scattering-induced light trapping and the optimal trade-off between light absorption and phonon emission. Finally, the SnSe@NF device is further used for seawater evaporation, demonstrating a comparable evaporation rate (0.8 kg m-2 h-1) to that of fresh water and good stability over many cycles of usage. In summary, the current contribution depicts a facile one-step scenario for the economical and efficient solar-enabled SnSe@NF evaporation devices. More importantly, an in-depth analysis of the photothermal conversion mechanism underneath the layered materials depicts a fundamental paradigm for the design and application of photothermal devices based on them in the future.
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Affiliation(s)
- Jiandong Yao
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Materials Science & Engineering, School of Physics, Sun Yat-sen University, Guangzhou 510275, Guangdong, P. R. China.
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Oh SM, Patil SB, Jin X, Hwang SJ. Recent Applications of 2D Inorganic Nanosheets for Emerging Energy Storage System. Chemistry 2018; 24:4757-4773. [DOI: 10.1002/chem.201704284] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Indexed: 01/14/2023]
Affiliation(s)
- Seung Mi Oh
- Center for Hybrid Interfacial Chemical Structure; Department of Chemistry and Nanoscience; College of Natural Sciences; Ewha Womans University; Seoul 03760 Korea
| | - Sharad B. Patil
- Center for Hybrid Interfacial Chemical Structure; Department of Chemistry and Nanoscience; College of Natural Sciences; Ewha Womans University; Seoul 03760 Korea
| | - Xiaoyan Jin
- Center for Hybrid Interfacial Chemical Structure; Department of Chemistry and Nanoscience; College of Natural Sciences; Ewha Womans University; Seoul 03760 Korea
| | - Seong-Ju Hwang
- Center for Hybrid Interfacial Chemical Structure; Department of Chemistry and Nanoscience; College of Natural Sciences; Ewha Womans University; Seoul 03760 Korea
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15
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Duong DL, Yun SJ, Lee YH. van der Waals Layered Materials: Opportunities and Challenges. ACS NANO 2017; 11:11803-11830. [PMID: 29219304 DOI: 10.1021/acsnano.7b07436] [Citation(s) in RCA: 152] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Since graphene became available by a scotch tape technique, a vast class of two-dimensional (2D) van der Waals (vdW) layered materials has been researched intensively. What is more intriguing is that the well-known physics and chemistry of three-dimensional (3D) bulk materials are often irrelevant, revealing exotic phenomena in 2D vdW materials. By further constructing heterostructures of these materials in the planar and vertical directions, which can be easily achieved via simple exfoliation techniques, numerous quantum mechanical devices have been demonstrated for fundamental research and technological applications. It is, therefore, necessary to review the special features in 2D vdW materials and to discuss the remaining issues and challenges. Here, we review the vdW materials library, technology relevance, and specialties of vdW materials covering the vdW interaction, strong Coulomb interaction, layer dependence, dielectric screening engineering, work function modulation, phase engineering, heterostructures, stability, growth issues, and the remaining challenges.
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Affiliation(s)
- Dinh Loc Duong
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS) , Suwon 16419, Republic of Korea
| | - Seok Joon Yun
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS) , Suwon 16419, Republic of Korea
| | - Young Hee Lee
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS) , Suwon 16419, Republic of Korea
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16
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Guo SQ, Wang LC, Zhang CG, Qi GC, Gu BC, Liu L, Yuan ZH. A unique semiconductor-carbon-metal hybrid structure design as a counter electrode in dye-sensitized solar cells. NANOSCALE 2017; 9:6837-6845. [PMID: 28497832 DOI: 10.1039/c7nr00718c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The catalytic activity of counter electrodes (CEs) severely restricts the photovoltaic conversion efficiency of dye-sensitized solar cells. However, electrons trapped by bulk defects greatly reduce the catalytic activity of the CE. In this study, we report a novel In2S3-C-Au hybrid structure designed by simply decorating Au particles on the surface of carbon-coated hierarchical In2S3 flower-like architectures, which could avoid the abovementioned problems. This effect can be attributed to the unique contribution of indium sulfide, carbon, and Au from the hybrid structure, as well as to their synergy. Electrochemical measurements revealed that the hybrid structure possessed high catalytic activity and electrochemical stability for the interconversion of the redox couple I3-/I-. Moreover, this superior performance can be incorporated into the dye-sensitized solar cells system. We used this hybrid structure as a counter electrode by casting it on an FTO substrate to form a film, which displayed better photovoltaic conversion efficiency (8.91%) than the commercial Pt counterpart (7.67%).
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Affiliation(s)
- Sheng-Qi Guo
- School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China.
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Zhang L, Han Z, Wang W, Li X, Su Y, Jiang D, Lei X, Sun S. Solar-Light-Driven Pure Water Splitting with Ultrathin BiOCl Nanosheets. Chemistry 2015; 21:18089-94. [PMID: 26463892 DOI: 10.1002/chem.201503778] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Indexed: 11/09/2022]
Abstract
A suitable photocatalyst for overall water splitting has been produced by overcoming the disadvantage of the band structure in bulk BiOCl by reducing the thickness to the quantum scale. The ultrathin BiOCl nanosheets with surface/subsurface defects realized the solar-driven pure water splitting in the absence of any co-catalysts or sacrificial agent. These surface defects cannot only shift both the valence band and conduction band upwards for band-gap narrowing but also promote charge-carrier separation. The amount of defects in the outer layer surface of BiOCl results in an enhancement of carrier density and faster charge transport. First-principles calculations provide clear evidence that the formation of surface oxygen vacancies is easier for the ultrathin BiOCl nanosheets than for its thicker counterpart. These defects can serve as active sites to effectively adsorb and dissociate H2 O molecules, resulting in a significantly improved water-splitting performance.
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Affiliation(s)
- Ling Zhang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050 (P. R. China)
| | - Zhongkang Han
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 2019 Jia Luo Road, Shanghai (P. R.China)
| | - Wenzhong Wang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050 (P. R. China).
| | - Xiaoman Li
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050 (P. R. China)
| | - Yang Su
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050 (P. R. China)
| | - Dong Jiang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050 (P. R. China)
| | - Xiaoling Lei
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 2019 Jia Luo Road, Shanghai (P. R.China)
| | - Songmei Sun
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050 (P. R. China)
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18
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Xie J, Xie Y. Structural Engineering of Electrocatalysts for the Hydrogen Evolution Reaction: Order or Disorder? ChemCatChem 2015. [DOI: 10.1002/cctc.201500396] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Sun X, Guo Y, Wu C, Xie Y. The Hydric Effect in Inorganic Nanomaterials for Nanoelectronics and Energy Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:3850-3867. [PMID: 25996550 DOI: 10.1002/adma.201500546] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 03/30/2015] [Indexed: 06/04/2023]
Abstract
Protons, as one of the world's smallest ions, are able to trigger the charge effect without obvious lattice expansion inside inorganic materials, offering a unique and important test-bed for controlling their diverse functionalities. Arising from the high chemical reactivity of hydrogen (easily losing an electron) with various main group anions (easily accepting a proton), the hydric effect provides a convenient and environmentally benign route to bring about fascinating new physicochemical properties, as well as to create new inorganic structures based on the "old lattice" without dramatically destroying the pristine structure, covering most inorganic materials. Moreover, hydrogen atoms tend to bond with anions or to produce intrinsic defects, both of which are expected to inject extra electrons into lattice framework, promising advances in control of bandgap, spin behavior, and carrier concentration, which determine functionality for wide applications. In this review article, recently developed effective hydric strategies are highlighted, which include the conventional hydric reaction under high temperature or room temperature, proton irradiation or hydrogen plasma treatment, and gate-electrolyte-driven adsorption or doping. The diverse physicochemical properties brought by the hydric effect via modulation of the intrinsic electronic structure are also summarized, finding wide applications in nanoelectronics, energy applications, and catalysis.
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Affiliation(s)
- Xu Sun
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science & Technology of China, Hefei, Anhui, 230026, PR China
| | - Yuqiao Guo
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science & Technology of China, Hefei, Anhui, 230026, PR China
| | - Changzheng Wu
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science & Technology of China, Hefei, Anhui, 230026, PR China
| | - Yi Xie
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science & Technology of China, Hefei, Anhui, 230026, PR China
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