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Dong F, Pang Z, Yang S, Lin Q, Song S, Li C, Ma X, Nie S. Improving Wastewater Treatment by Triboelectric-Photo/Electric Coupling Effect. ACS NANO 2022; 16:3449-3475. [PMID: 35225606 DOI: 10.1021/acsnano.1c10755] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The ability to meet higher effluent quality requirements and the reduction of energy consumption are the biggest challenges in wastewater treatment worldwide. A large proportion of the energy generated during wastewater treatment processes is neglected and lost in traditional wastewater treatment plants. As a type of energy harvesting system, triboelectric nanogenerators (TENGs) can extensively harvest the microscale energies generated from wastewater treatment procedures and auxiliary devices. This harvested energy can be utilized to improve the removal efficiency of pollutants through photo/electric catalysis, which has considerable potential application value in wastewater treatment plants. This paper gives an overall review of the generated potential energies (e.g., water wave energy, wind energy, and acoustic energy) that can be harvested at various stages of the wastewater treatment process and introduces the application of TENG devices for the collection of these neglected energies during wastewater treatment. Furthermore, the mechanisms and catalytic performances of TENGs coupled with photo/electric catalysis (e.g., electrocatalysis, photoelectric catalysis) are discussed to realize higher pollutant removal efficiencies and lower energy consumption. Then, a thorough, detailed investigation of TENG devices, electrode materials, and their coupled applications is summarized. Finally, the intimate coupling of self-powered photoelectric catalysis and biodegradation is proposed to further improve removal efficiencies in wastewater treatment. This concept is conducive to improving knowledge about the underlying mechanisms and extending applications of TENGs in wastewater treatment to better solve the problems of energy demand in the future.
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Affiliation(s)
- Feilong Dong
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Zhen Pang
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Shuyi Yang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Qiufeng Lin
- Department of Earth and Environmental Studies, Montclair State University, Montclair, New Jersey 07043, United States
| | - Shuang Song
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Cong Li
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200433, China
| | - Xiaoyan Ma
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Shuangxi Nie
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
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2
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Isometric Double-Layer Staggered Chain Teeth Triboelectric Nanogenerator. MICROMACHINES 2022; 13:mi13030421. [PMID: 35334712 PMCID: PMC8954793 DOI: 10.3390/mi13030421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 02/27/2022] [Accepted: 03/07/2022] [Indexed: 02/01/2023]
Abstract
The sliding freestanding layer triboelectric nanogenerator (SF-TENG) is a sustainable power source that can convert mechanical energy from linear or rotating mechanical motion to electrical energy. This paper proposes a double-layer staggered chain teeth TENG. Comparing the staggered electrode TENG and the double-layer staggered electrode TENG, the output voltage difference is relatively small. The electrode of the TENG is designed to the shape of chain teeth, which proves that TENG can be combined with a zipper, and the best distance among chain teeth in the TENG is determined through experiments. Compared with traditional zippers, the double-layer staggered chain teeth TENG can generate electrical energy during the continuous pulling of the zipper. The double-layer staggered chain teeth TENG has good performance. When the external load is 20 MΩ, the maximum output power reaches 20.18 µW. After the rectification and transformation, the generated electricity can light up 30 LED lights or more, and can also supply power to electronic devices. Through the chain teeth array, the open circuit voltage and transfer charge generated by the zipper during the continuous pulling process are improved. The double-layer staggered chain teeth TENG has a good usage environment in life, and this work will provide valuable insights for the development of SF-TENG technology.
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3
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Kim K, Lee K, Choi J, Lee JW, Hwang W. Selective Allowance of Precipitation from Oversaturated Solution Using Surface Structures. ACS OMEGA 2022; 7:987-993. [PMID: 35036762 PMCID: PMC8757354 DOI: 10.1021/acsomega.1c05572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 12/23/2021] [Indexed: 06/14/2023]
Abstract
Precipitation is a well-known phenomenon commonly observed in salt ponds. However, it causes pipe clogging in industrial sites, which can be resolved by controlling the direction of precipitation. Herein, we propose a method to control the precipitation direction by changing the structures and properties of the solid surface. Bare, nanostructured, microstructured, and micro/nanostructured surfaces were immersed in the same saturated aqueous NaCl solution, and the heights at which precipitation occurred in the different specimens were compared. On bare and nanostructured surfaces, NaCl deposits as a flat layer on the surface, while on micro and micro/nanostructured surfaces, it forms a thick deposit in a direction perpendicular to the surface. When the same experiment was conducted on surfaces made by patterning different structural surfaces, the precipitates did not spread on the surface with microscale structures. We believe that this novel approach may prove useful in solving the problems caused by precipitation.
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Affiliation(s)
- Kihwan Kim
- Department
of Mechanical Engineering, Pohang University
of Science and Technology, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Kwangseok Lee
- Department
of Mechanical Engineering, Pohang University
of Science and Technology, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Jaehyun Choi
- LG
Innotek, Magokjungang 10-ro, Gangseo-gu, Seoul 07796, Republic of Korea
| | - Jeong-Won Lee
- Department
of Mechanical Engineering, Chosun University, Gwangju 61452, Republic of Korea
| | - Woonbong Hwang
- Department
of Mechanical Engineering, Pohang University
of Science and Technology, Pohang, Gyeongbuk 37673, Republic of Korea
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Zhang W, You L, Meng X, Wang B, Lin D. Recent Advances on Conducting Polymers Based Nanogenerators for Energy Harvesting. MICROMACHINES 2021; 12:1308. [PMID: 34832720 PMCID: PMC8623428 DOI: 10.3390/mi12111308] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/20/2021] [Accepted: 10/20/2021] [Indexed: 11/16/2022]
Abstract
With the rapid growth of numerous portable electronics, it is critical to develop high-performance, lightweight, and environmentally sustainable energy generation and power supply systems. The flexible nanogenerators, including piezoelectric nanogenerators (PENG) and triboelectric nanogenerators (TENG), are currently viable candidates for combination with personal devices and wireless sensors to achieve sustained energy for long-term working circumstances due to their great mechanical qualities, superior environmental adaptability, and outstanding energy-harvesting performance. Conductive materials for electrode as the critical component in nanogenerators, have been intensively investigated to optimize their performance and avoid high-cost and time-consuming manufacture processing. Recently, because of their low cost, large-scale production, simple synthesis procedures, and controlled electrical conductivity, conducting polymers (CPs) have been utilized in a wide range of scientific domains. CPs have also become increasingly significant in nanogenerators. In this review, we summarize the recent advances on CP-based PENG and TENG for biomechanical energy harvesting. A thorough overview of recent advancements and development of CP-based nanogenerators with various configurations are presented and prospects of scientific and technological challenges from performance to potential applications are discussed.
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Affiliation(s)
- Weichi Zhang
- Mechanical Engineering, The University of Sydney, Sydney, NSW 2006, Australia
| | - Liwen You
- School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 201424, China;
| | - Xiao Meng
- Shaanxi Province Key Laboratory of Thin Films Technology and Optical Test, School of Optoelectronic Engineering, Xi’an Technological University, Xi’an 710032, China; (X.M.); (B.W.)
| | - Bozhi Wang
- Shaanxi Province Key Laboratory of Thin Films Technology and Optical Test, School of Optoelectronic Engineering, Xi’an Technological University, Xi’an 710032, China; (X.M.); (B.W.)
| | - Dabin Lin
- Shaanxi Province Key Laboratory of Thin Films Technology and Optical Test, School of Optoelectronic Engineering, Xi’an Technological University, Xi’an 710032, China; (X.M.); (B.W.)
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Triboelectric Nanogenerators for Energy Harvesting in Ocean: A Review on Application and Hybridization. ENERGIES 2021. [DOI: 10.3390/en14185600] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
With recent advancements in technology, energy storage for gadgets and sensors has become a challenging task. Among several alternatives, the triboelectric nanogenerators (TENG) have been recognized as one of the most reliable methods to cure conventional battery innovation’s inadequacies. A TENG transfers mechanical energy from the surrounding environment into power. Natural energy resources can empower TENGs to create a clean and conveyed energy network, which can finally facilitate the development of different remote gadgets. In this review paper, TENGs targeting various environmental energy resources are systematically summarized. First, a brief introduction is given to the ocean waves’ principles, as well as the conventional energy harvesting devices. Next, different TENG systems are discussed in details. Furthermore, hybridization of TENGs with other energy innovations such as solar cells, electromagnetic generators, piezoelectric nanogenerators and magnetic intensity are investigated as an efficient technique to improve their performance. Advantages and disadvantages of different TENG structures are explored. A high level overview is provided on the connection of TENGs with structural health monitoring, artificial intelligence and the path forward.
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Shin J, Ji S, Yoon J, Park J. Module-Type Triboelectric Nanogenerators Capable of Harvesting Power from a Variety of Mechanical Energy Sources. MICROMACHINES 2021; 12:mi12091043. [PMID: 34577687 PMCID: PMC8469907 DOI: 10.3390/mi12091043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 08/18/2021] [Accepted: 08/27/2021] [Indexed: 11/26/2022]
Abstract
In this study, we propose a module-type triboelectric nanogenerator (TENG) capable of harvesting electricity from a variety of mechanical energy sources and generating power from diverse forms that fit the modular structure of the generator. The potential energy and kinetic energy of water are used for the rotational motion of the generator module, and electricity is generated by the contact/separation generation mode between the two triboelectric surfaces inside the rotating TENG. Through the parametric design of the internal friction surface structure and mass ball, we optimized the output of the proposed structure. To magnify the power, experiments were conducted to optimize the electrical output of the series of the TENG units. Consequently, outputs of 250 V and 11 μA were obtained when the angle formed between the floor and the housing was set at 0° while nitrile was set as the positively charged material and the frequency was set at 7 Hz. The electrical signal generated by the module-type TENG can be used as a sensor to recognize the strength and direction of various physical quantities, such as wind and earthquake vibrations.
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Affiliation(s)
- Jaehee Shin
- School of Mechatronics Engineering, Korea University of Technology & Education, Cheonan 1600, Chungjeolro, Korea; (J.S.); (S.J.)
| | - Sungho Ji
- School of Mechatronics Engineering, Korea University of Technology & Education, Cheonan 1600, Chungjeolro, Korea; (J.S.); (S.J.)
| | - Jiyoung Yoon
- Safety System R&D Group, Korea Institute of Industrial Technology, 320 Techno sunhwan-ro, Yuga-myeon, Daegu 42994, Dalseong-gun, Korea;
| | - Jinhyoung Park
- School of Mechatronics Engineering, Korea University of Technology & Education, Cheonan 1600, Chungjeolro, Korea; (J.S.); (S.J.)
- Correspondence: ; Tel.: +82-41-560-1124
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Chen H, Wang J, Ning A. Optimization of a Rolling Triboelectric Nanogenerator Based on the Nano-Micro Structure for Ocean Environmental Monitoring. ACS OMEGA 2021; 6:21059-21065. [PMID: 34423213 PMCID: PMC8375102 DOI: 10.1021/acsomega.1c02709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 07/23/2021] [Indexed: 06/13/2023]
Abstract
The serious environmental pollution and energy crisis have become a global issue, which makes it a pressing task to develop sustainable and clean energy sources. There exists a large amount of renewable energy in the ocean; unfortunately, most resources are underutilized. In this work, we demonstrate a performance-enhancing rolling triboelectric nanogenerator (TENG) based on nano-micro-structured polytetrafluoroethylene (PTFE) films. The nano-micro structure on the PTFE surface can increase the effective contact area and enhance the triboelectric effect, which is beneficial to improve the output performance. As a result, the output voltage and output current are 25.1 V and 7.3 μA, respectively. We further investigate the effect of nano-micro PTFE concentration on the output performance. The TENG based on a 45% concentration of nano-micro PTFE presents the maximum output power. Furthermore, this TENG can effectively harvest water wave energy with various amplitudes and frequencies, which has the potential to harvest ocean energy for environmental monitoring.
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Affiliation(s)
- Huamin Chen
- Fujian
Key Laboratory of Functional Marine Sensing Materials, Center for
Advanced Marine Materials and Smart Sensors, Minjiang University, Fuzhou
City, Fujian Province 350108, China
| | - Jun Wang
- Fujian
Key Laboratory of Functional Marine Sensing Materials, Center for
Advanced Marine Materials and Smart Sensors, Minjiang University, Fuzhou
City, Fujian Province 350108, China
| | - Aifeng Ning
- Donghai
Institute of Ningbo University, Ningbo University, Ningbo City, Zhejiang Province 315211, China
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Tian J, Chen X, Wang ZL. Environmental energy harvesting based on triboelectric nanogenerators. NANOTECHNOLOGY 2020; 31:242001. [PMID: 32092711 DOI: 10.1088/1361-6528/ab793e] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
With the fast development of the Internet of Things, the energy supply for electronics and sensors has become a critical challenge. The triboelectric nanogenerator (TENG), which can transfer mechanical energy from the surrounding environment into electricity, has been recognized as the most promising alternative technology to remedy the shortcomings of traditional battery technology. Environmental mechanical energy widely exists in activities in nature and these environmental energy sources can enable TENGs to achieve a clean and distributed energy network, which can finally benefit the innovation of various wireless devices. In this review, TENGs targeting different environmental energy sources have been systematically summarized and analyzed. Firstly, we give a brief introduction to the basic principle and working modes of the TENG. Then, TENGs targeting different energy sources, from blowing wind and raindrops to pounding waves, noise signalling, and so on, are summarized based on their design concept and output performance. In addition, combined with other energy technologies such as solar cells, electromagnetic generators, and piezoelectric nanogenerators, the application of hybrid nanogenerators is elaborated under different scenarios. Finally, the challenges, limitations, and future research trends of environmental energy collection are outlined.
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Affiliation(s)
- Jingwen Tian
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People's Republic of China. School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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Arrangement optimization of water-driven triboelectric nanogenerators considering capillary phenomenon between hydrophobic surfaces. Sci Rep 2020; 10:1126. [PMID: 31980717 PMCID: PMC6981242 DOI: 10.1038/s41598-020-57851-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 11/08/2019] [Indexed: 02/01/2023] Open
Abstract
The rise in environmental issues has stimulated research on alternative energy. In this regard, triboelectric generation has received much attention as one of several new alternative energy sources. Among the triboelectric generation methods, solid-liquid triboelectric nanogenerators (SLTENGs) have been actively investigated owing to their durability and broad applicability. In this paper, we report on the optimum arrangement of SLTENGs to increase the generation of electrical energy. When hydrophobic SLTENGs are arranged in parallel with a specific intervening gap, the friction area between the water and the surface of the SLTENGs is changed owing to the different penetration distances of water between them. This difference affects the amount of triboelectricity generated; this change in the water contact area is caused by the capillary phenomenon. Therefore, we investigated the effect of the gap on water penetration and formulated an optimum arrangement to achieve optimum electricity generation efficiency when multiple SLTENGs are contained in a limited volume. The proposed optimum arrangement of SLTENGs is expected to have high utilization in energy harvesting from natural environment sources such as wave energy or water flow.
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Editorial for the Special Issue on Nanogenerators in Korea. MICROMACHINES 2019; 10:mi10020097. [PMID: 30699937 PMCID: PMC6412984 DOI: 10.3390/mi10020097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 01/29/2019] [Indexed: 11/16/2022]
Abstract
Nanogenerator-based technologies have found outstanding accomplishments in energy harvesting applications over the past two decades [...].
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