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Jiao Z, Ge S, Chen M, Jeyakumar P, Wang H, Xu X, Wang Y. Does livestock-Manure-Derived Biochar Suitable for the Stabilization of Cadmium and Zinc in Contaminated Soil? Bull Environ Contam Toxicol 2024; 112:57. [PMID: 38565676 DOI: 10.1007/s00128-024-03881-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 03/07/2024] [Indexed: 04/04/2024]
Abstract
Both livestock-manure and livestock-manure-derived biochar have been used to remediate heavy metal-contaminated soil. However, direct comparisons of the heavy metal stabilization efficiency of livestock-manure and EQC-manure-biochar (derived from an equal quantity of corresponding livestock-manure) are limited. In the present study, the effect of livestock-manures and EQC-manure-biochars on soil properties and heavy metal bioavailability and leachability were compared using two contrasting soils (Ferralsols and Fluvisols). The results showed that both the livestock-manures and EQC-manure-biochars significantly changed soil pH, available phosphorus, available potassium, alkaline nitrogen and organic matter content (p < 0.05), but the trends were variable. In Ferralsols, the DTPA-extractable Cd and Zn decreased by -0.38%~5.70% and - 3.79%~9.98% with livestock-manure application and by -7.99%~7.23% and - 5.67%~7.17% with EQC-manure-biochars application. In Fluvisols, the DTPA-extractable Cd and Zn decreased by 13.39%~17.41% and - 45.26%~14.24% with livestock-manure application and by 10.76%~16.90% and - 36.38%~16.37% with EQC-manure-biochar application. Furthermore, the change in TCLP-extractable Cd and Zn in both soils was similar to that of DTPA-extractable Cd and Zn. Notably, the Cd and Zn stabilization efficiency of the EQC-manure-biochars was no better than that of the corresponding livestock-manures. These results suggest that the use of livestock-manure-derived biochar is not cost-effective for the remediation of heavy metal-contaminated soil.
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Affiliation(s)
- Zhiqiang Jiao
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng, 475004, China
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Henan University, Ministry of Education, Kaifeng, 475004, China
- Henan Engineering Research Center for Control & Remediation of Soil Toxic metals Pollution, Henan University, Kaifeng, 475004, China
| | - Shiji Ge
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng, 475004, China
- Henan Engineering Research Center for Control & Remediation of Soil Toxic metals Pollution, Henan University, Kaifeng, 475004, China
| | - Ming Chen
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng, 475004, China
- Henan Engineering Research Center for Control & Remediation of Soil Toxic metals Pollution, Henan University, Kaifeng, 475004, China
| | - Paramsothy Jeyakumar
- Environmental Science Group, School of Agriculture and Environment, Massey University, Private Bag 11 222, Palmerston North, 4442, New Zealand
| | - Hailong Wang
- School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China
| | - Xiaojun Xu
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng, 475004, China.
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Henan University, Ministry of Education, Kaifeng, 475004, China.
| | - Yangyang Wang
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng, 475004, China.
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Henan University, Ministry of Education, Kaifeng, 475004, China.
- Henan Engineering Research Center for Control & Remediation of Soil Toxic metals Pollution, Henan University, Kaifeng, 475004, China.
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2
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Chen M, Kong Y, Zheng W, Liu J, Wang Y, Wang Y. Accumulation and risk assessment of mercury in soil as influenced by mercury mining/smelting in Tongren, Southwest China. Environ Geochem Health 2024; 46:83. [PMID: 38367093 DOI: 10.1007/s10653-024-01860-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 01/04/2024] [Indexed: 02/19/2024]
Abstract
To investigate the influence of mercury (Hg) mining/smelting on the surrounding soil environment, ninety soil samples were collected around Hg mining/smelting areas in Tongren city, Guizhou Province, Southwest China. The total mercury (THg), methylmercury (MeHg), bioavailability and fractions of Hg in the soil and their potential risk were evaluated. The results showed that Hg mining/smelting significantly increased the soil pH and decreased the soil organic matter content (p < 0.05). The THg content in the surrounding soil was much higher than that at the control site, with almost all the samples exceeding the national standard in China (3.4 mg/kg, GB15618-2018). Similarly, the concentrations of MeHg (0.09-2.74 μg/kg) and bioavailable Hg (0.64-62.94 μg/kg) in these soil samples were also significantly higher than those in the control site. However, the MeHg/THg ratio was significantly lower in mining/smelting influenced soils (0.01-0.68%) than in control soils (0.60-3.72%). Fraction analysis revealed that residual (RES-Hg) and organic matter-bounded (OM-Hg) Hg accounted for more than 50% of the THg. Ecological risk assessment revealed that the potential ecological risk for most of the Hg mining/smelting-influenced soils (30.16 ≤ Er ≤ 2280.02) were higher than those at the control site (15.12 ≤ Er ≤ 27.1). In addition, these Hg mining/smelting-influenced soils posed acceptable noncarcinogenic risks to adults (except for two soil samples), with hazard indices (HIs) ranging from 0.04 to 1.11 and a mean HI of 0.44. However, children suffer serious noncarcinogenic risks, with HIs ranging from 0.34 to 7.43 and a mean HI of 3.10.
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Affiliation(s)
- Ming Chen
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng, 475004, China
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University), Ministry of Education, Kaifeng, 475004, China
| | - Yuke Kong
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng, 475004, China
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University), Ministry of Education, Kaifeng, 475004, China
| | - Wenxiu Zheng
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng, 475004, China
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University), Ministry of Education, Kaifeng, 475004, China
| | - Jinhui Liu
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng, 475004, China
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University), Ministry of Education, Kaifeng, 475004, China
| | - Yong Wang
- School of Material and Chemical Engineering, Tongren University, Tongren, 554300, China
| | - Yangyang Wang
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng, 475004, China.
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University), Ministry of Education, Kaifeng, 475004, China.
- Henan Engineering Research Center for Control and Remediation of Soil Heavy Metal Pollution, Henan University, Kaifeng, 475004, China.
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3
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Liu S, Wang X, Chen Y, Li Y, Wei Y, Shao T, Ma J, Jiang W, Xu J, Dong Y, Wang C, Liu H, Gao C, Xiong Y. Efficient Thermal Management with Selective Metamaterial Absorber for Boosting Photothermal CO 2 Hydrogenation under Sunlight. Adv Mater 2024:e2311957. [PMID: 38324747 DOI: 10.1002/adma.202311957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/14/2024] [Indexed: 02/09/2024]
Abstract
Photothermal catalytic CO2 hydrogenation is a prospective strategy to simultaneously reduce CO2 emission and generate value-added fuels. However, the demand of extremely intense light hinders its development in practical applications. Herein, this work reports the novel design of Ni-based selective metamaterial absorber and employs it as the photothermal catalyst for CO2 hydrogenation. The selective absorption property reduces the heat loss caused by radiation while possessing effectively solar absorption, thus substantially increasing local photothermal temperature. Notably, the enhancement of local electric field by plasmon resonance promotes the adsorption and activation of reactants. Moreover, benefiting from the ingenious morphology that Ni nanoparticles (NPs) are encapsulated by SiO2 matrix through co-sputtering, the greatly improved dispersion of Ni NPs enables enhancing the contact with reaction gas and preventing the agglomeration. Consequently, the catalyst exhibits an unprecedented CO2 conversion rate of 516.9 mmol gcat -1 h-1 under 0.8 W cm-2 irradiation, with near 90% CO selectivity and high stability. Significantly, this designed photothermal catalyst demonstrates the great potential in practical applications under sunlight. This work provides new sights for designing high-performance photothermal catalysts by thermal management.
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Affiliation(s)
- Shengkun Liu
- School of Chemistry and Materials Science, Center for Micro and Nanoscale Research and Fabrication, Hefei National Research Center for Physical Sciences at the Microscale, Instruments Center for Physical Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Xin Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui, 241000, P. R. China
| | - Yihong Chen
- School of Chemistry and Materials Science, Center for Micro and Nanoscale Research and Fabrication, Hefei National Research Center for Physical Sciences at the Microscale, Instruments Center for Physical Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yaping Li
- School of Chemistry and Materials Science, Center for Micro and Nanoscale Research and Fabrication, Hefei National Research Center for Physical Sciences at the Microscale, Instruments Center for Physical Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yu Wei
- School of Chemistry and Materials Science, Center for Micro and Nanoscale Research and Fabrication, Hefei National Research Center for Physical Sciences at the Microscale, Instruments Center for Physical Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Tianyi Shao
- School of Chemistry and Materials Science, Center for Micro and Nanoscale Research and Fabrication, Hefei National Research Center for Physical Sciences at the Microscale, Instruments Center for Physical Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Jun Ma
- School of Chemistry and Materials Science, Center for Micro and Nanoscale Research and Fabrication, Hefei National Research Center for Physical Sciences at the Microscale, Instruments Center for Physical Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Wenbin Jiang
- School of Chemistry and Materials Science, Center for Micro and Nanoscale Research and Fabrication, Hefei National Research Center for Physical Sciences at the Microscale, Instruments Center for Physical Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Junchi Xu
- School of Chemistry and Materials Science, Center for Micro and Nanoscale Research and Fabrication, Hefei National Research Center for Physical Sciences at the Microscale, Instruments Center for Physical Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yueyue Dong
- School of Chemistry and Materials Science, Center for Micro and Nanoscale Research and Fabrication, Hefei National Research Center for Physical Sciences at the Microscale, Instruments Center for Physical Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Chengming Wang
- School of Chemistry and Materials Science, Center for Micro and Nanoscale Research and Fabrication, Hefei National Research Center for Physical Sciences at the Microscale, Instruments Center for Physical Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Hengjie Liu
- School of Chemistry and Materials Science, Center for Micro and Nanoscale Research and Fabrication, Hefei National Research Center for Physical Sciences at the Microscale, Instruments Center for Physical Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Chao Gao
- School of Chemistry and Materials Science, Center for Micro and Nanoscale Research and Fabrication, Hefei National Research Center for Physical Sciences at the Microscale, Instruments Center for Physical Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yujie Xiong
- School of Chemistry and Materials Science, Center for Micro and Nanoscale Research and Fabrication, Hefei National Research Center for Physical Sciences at the Microscale, Instruments Center for Physical Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui, 241000, P. R. China
- Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou, Jiangsu, 215123, P. R. China
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4
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Wang X, Wang Z, Xi D, Li J, Li X, Bai X, Wang B, Low J, Xiong Y. Tunable Impedance of Cobalt Loaded Carbon for Wide-Range Electromagnetic Wave Absorption. Small 2023:e2308970. [PMID: 38155111 DOI: 10.1002/smll.202308970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 12/03/2023] [Indexed: 12/30/2023]
Abstract
Impedance matching modulation of the electromagnetic wave (EMW) absorbers toward broad effective absorption bandwidth (EAB) is the ultimate aim in EMW attenuation applications. Here, a Joule heating strategy is reported for preparation of the Co-loaded carbon (Co/C) absorber with tunable impedance characteristics. Typically, the size of the Co can be regulated to range from single-atoms to clusters, and to nanocrystals. The varied sizes of the Co combined with different graphitization degrees of carbon can result in different relative input impedances and electromagnetic loss, leading to the tunable EMW absorption properties of the Co/C absorber. By meticulously coalescing the different prepared Co/C, the working frequency can be easily tuned, covering Ku , X, and C bands. Furthermore, the Co/C demonstrates a high EMW attenuation due to its unique dielectric loss capability and magnetic loss characteristics. The abundant interfaces of Co/C can also contribute to the enhanced interfacial polarization for improving EMW attenuation. This work demonstrates the importance of optimizing the metal and carbon interaction to the impedance matching toward wide EAB of the EMW absorbers.
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Affiliation(s)
- Xiaonong Wang
- College of Electronic Engineering, National University of Defense Technology, Hefei, Anhui, 230037, P. R. China
| | - Zhongliao Wang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei Normal University, Huaibei, Anhui, 235000, P. R. China
| | - Dawei Xi
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Jiayi Li
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Xiaoxia Li
- College of Electronic Engineering, National University of Defense Technology, Hefei, Anhui, 230037, P. R. China
| | - Xiujun Bai
- College of Electronic Engineering, National University of Defense Technology, Hefei, Anhui, 230037, P. R. China
| | - Bin Wang
- College of Electronic Engineering, National University of Defense Technology, Hefei, Anhui, 230037, P. R. China
| | - Jingxiang Low
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yujie Xiong
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
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5
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Yang L, Ge S, Liu J, Iqbal Y, Jiang Y, Sun R, Ruan X, Wang Y. Spatial Distribution and Risk Assessment of Heavy Metal(oid)s Contamination in Topsoil around a Lead and Zinc Smelter in Henan Province, Central China. Toxics 2023; 11:toxics11050427. [PMID: 37235242 DOI: 10.3390/toxics11050427] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/29/2023] [Accepted: 04/30/2023] [Indexed: 05/28/2023]
Abstract
A total of 137 farmland soil samples were collected around a lead/zinc smelter within 64 km2. The concentration, spatial distribution, and potential source of nine heavy metal(oid)s (As, Cd, Co, Cr, Cu, Ni, Pb, V, and Zn) in soils and their potential ecological risk were investigated in detail. The results showed that the average concentrations of Cd, Pb, Cr and Zn in these soils were higher than their background value in Henan Province, and the average content of Cd was 2.83 times of the risk screening values in the national standard of China (GB 15618-2018). According to the distribution of different heavy metal(oid)s in soils, Cd and Pb in soil decrease gradually with the increase of distance from the smelter to the surrounding area. This indicates that the Pb and Cd originate from smelters via airborne practices according to the typical air pollution diffusion model. The distribution of Zn, Cu, and As were similar to Cd and Pb. However, Ni, V, Cr, and Co were mainly affected by soil parent materials. The potential ecological risk of Cd was higher than those of other elements, and the risk grade of the other eight elements was mainly low. The polluted soils with significantly high and high potential ecological risk covered 93.84% of all the studied regions. This should be of serious concern to government. The results of a principal component analysis (PCA) and cluster analysis (CA) show that Pb, Cd, Zn, Cu, and As were the elements mainly stemmed from smelter and other types of plants, with a contribution rate of 60.08%, while Co, Cr, Ni, and V are mainly caused by nature, with a contribution rate of 26.26%.
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Affiliation(s)
- Ling Yang
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Henan University, Ministry of Education, Kaifeng 475004, China
| | - Shiji Ge
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
- Henan Engineering Research Center for Control & Remediation of Soil Heavy Metal Pollution, Henan University, Kaifeng 475004, China
| | - Jinhui Liu
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Henan University, Ministry of Education, Kaifeng 475004, China
| | - Younas Iqbal
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Henan University, Ministry of Education, Kaifeng 475004, China
| | - Yuling Jiang
- School of Geographic Sciences, Xinyang Normal University, Xinyang 464000, China
| | - Ruiling Sun
- Puyang Branch of Municipal Bureau of Ecological Environment, Puyang 457100, China
| | - Xinling Ruan
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Henan University, Ministry of Education, Kaifeng 475004, China
- Henan Engineering Research Center for Control & Remediation of Soil Heavy Metal Pollution, Henan University, Kaifeng 475004, China
| | - Yangyang Wang
- National Demonstration Center for Environmental and Planning, College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Henan University, Ministry of Education, Kaifeng 475004, China
- Henan Engineering Research Center for Control & Remediation of Soil Heavy Metal Pollution, Henan University, Kaifeng 475004, China
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6
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Liao L, Li M, Yin Y, Chen J, Zhong Q, Du R, Liu S, He Y, Fu W, Zeng F. Advances in the Synthesis of Covalent Triazine Frameworks. ACS Omega 2023; 8:4527-4542. [PMID: 36777586 PMCID: PMC9909813 DOI: 10.1021/acsomega.2c06961] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 01/05/2023] [Indexed: 05/14/2023]
Abstract
Covalent triazine frameworks (CTFs) are a class of organic polymer materials constructed by aromatic 1,3,5-triazine rings with planar π-conjugation properties. CTFs are highly stable and porous with N atoms in the frameworks, possessing semiconductive properties; thus they are widely used in gas adsorption and separation as well as catalysis. The properties of CTFs strongly depend on the type of monomers and the synthesis process. Synthesis methods including ionothermal polymerization, amino-aldehyde synthesis, trifluoromethanesulfonic acid catalyzed synthesis, and aldehyde-amidine condensation have been intensively studied in recent years. In this review, we discuss the recent advances and future developments of CTFs synthesis.
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Affiliation(s)
- Longfei Liao
- School
of Materials Science and Engineering, Harbin
Institute of Technology (Shenzhen), Shenzhen 518055, Guangdong, China
- Space
Science and Technology Institute (Shenzhen), Shenzhen 518117, Guangdong, China
- (L.L.)
| | - Mingyu Li
- School
of Materials Science and Engineering, Harbin
Institute of Technology (Shenzhen), Shenzhen 518055, Guangdong, China
| | - Yongli Yin
- Space
Science and Technology Institute (Shenzhen), Shenzhen 518117, Guangdong, China
| | - Jian Chen
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
| | - Qitong Zhong
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
| | - Ruixing Du
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
| | - Shuilian Liu
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
| | - Yiming He
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
| | - Weijie Fu
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
| | - Feng Zeng
- State
Key Laboratory of Materials-Oriented Chemical Engineering, College
of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
- (F.Z.)
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7
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Duan M, Hu C, Li H, Chen Y, Chen R, Gong W, Lu Z, Zhang N, Long R, Song L, Xiong Y. Synergizing Inter and Intraband Transitions in Defective Tungsten Oxide for Efficient Photocatalytic Alcohol Dehydration to Alkenes. JACS Au 2022; 2:1160-1168. [PMID: 35647591 PMCID: PMC9131368 DOI: 10.1021/jacsau.2c00146] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/02/2022] [Accepted: 05/03/2022] [Indexed: 05/20/2023]
Abstract
Photocatalysis under mild conditions is an intriguing avenue for organic chemical manufacturing to confront the serious fossil energy crisis. Herein, we report a direct light-driven alkene production through alcohol dehydration, using nonstoichiometric tungsten oxide of W18O49 nanowires with abundant lattice defects as a photocatalyst. A representative ethylene (C2H4) production rate of 275.5 mmol gcat -1 h-1 is achieved from ethanol (C2H5OH) dehydration, together with excellent selectivity up to 99.9%. The universality of our approach is further demonstrated with other alcohol dehydration. Combining ultrafast transient absorption spectroscopy with in situ X-ray photoelectron spectroscopy, we underline that the inter- and intraband transitions synergistically contribute to such excellent activity. In particular, the intraband transition excites the electrons in defect bands into an energetically "hot" state, largely alleviating the charge recombination. As a result, the C-OH bond of chemisorbed C2H5OH molecules can be effectively dissociated to furnish the formation of C=C bonds. Our work offers a fresh insight into sustainable alkene production with renewable energy input under mild conditions.
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Affiliation(s)
- Meilin Duan
- School
of Chemistry and Materials Science, and National Synchrotron Radiation
Laboratory, University of Science and Technology
of China, Hefei, Anhui 230026, China
- Institute
of Energy, Hefei Comprehensive National
Science Center, 350 Shushanhu
Road, Hefei, Anhui 230031, China
| | - Canyu Hu
- School
of Chemistry and Materials Science, and National Synchrotron Radiation
Laboratory, University of Science and Technology
of China, Hefei, Anhui 230026, China
| | - Hao Li
- Anhui
Province Key Laboratory of Optoelectronic Material Science and Technology,
School of Physics and Electronic Information, Anhui Engineering Research
Center of Carbon Neutrality, Anhui Normal
University, Wuhu, Anhui 241002, China
| | - Yihong Chen
- School
of Chemistry and Materials Science, and National Synchrotron Radiation
Laboratory, University of Science and Technology
of China, Hefei, Anhui 230026, China
| | - Ruitian Chen
- School
of Chemistry and Materials Science, and National Synchrotron Radiation
Laboratory, University of Science and Technology
of China, Hefei, Anhui 230026, China
| | - Wanbing Gong
- School
of Chemistry and Materials Science, and National Synchrotron Radiation
Laboratory, University of Science and Technology
of China, Hefei, Anhui 230026, China
| | - Zhou Lu
- Anhui
Province Key Laboratory of Optoelectronic Material Science and Technology,
School of Physics and Electronic Information, Anhui Engineering Research
Center of Carbon Neutrality, Anhui Normal
University, Wuhu, Anhui 241002, China
| | - Ning Zhang
- Department
of Applied Physics, The Hong Kong Polytechnic
University, Hong Kong 999077, China
| | - Ran Long
- School
of Chemistry and Materials Science, and National Synchrotron Radiation
Laboratory, University of Science and Technology
of China, Hefei, Anhui 230026, China
| | - Li Song
- School
of Chemistry and Materials Science, and National Synchrotron Radiation
Laboratory, University of Science and Technology
of China, Hefei, Anhui 230026, China
| | - Yujie Xiong
- School
of Chemistry and Materials Science, and National Synchrotron Radiation
Laboratory, University of Science and Technology
of China, Hefei, Anhui 230026, China
- Institute
of Energy, Hefei Comprehensive National
Science Center, 350 Shushanhu
Road, Hefei, Anhui 230031, China
- Anhui
Province Key Laboratory of Optoelectronic Material Science and Technology,
School of Physics and Electronic Information, Anhui Engineering Research
Center of Carbon Neutrality, Anhui Normal
University, Wuhu, Anhui 241002, China
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Gao D, Zheng W, Wang M, Wang L, Xiao Y, Zhang Y. A Zero-Padding Frequency Domain Convolutional Neural Network for SSVEP Classification. Front Hum Neurosci 2022; 16:815163. [PMID: 35370578 PMCID: PMC8967947 DOI: 10.3389/fnhum.2022.815163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 02/16/2022] [Indexed: 11/23/2022] Open
Abstract
The brain-computer interface (BCI) of steady-state visual evoked potential (SSVEP) is one of the fundamental ways of human-computer communication. The main challenge is that there may be a nonlinear relationship between different SSVEP in other states. For improving the performance of SSVEP BCI, a novel CNN algorithm model is proposed in this study. Based on the discrete Fourier transform to calculate the signal's power spectral density (PSD), we perform zero-padding in the signal's time domain to improve its performance on the PSD and make it more refined. In this way, the frequency point interval in the PSD of the SSVEP is consistent with the minimum gap between the stimulation frequency. Combining the nonlinear transformation capabilities of CNN in deep learning, a zero-padding frequency domain convolutional neural network (ZPFDCNN) model is proposed. Extensive experiments based on the SSVEP dataset validate the effectiveness of our method. The study verifies that the proposed ZPFDCNN method can improve the effectiveness of the SSVEP-based high-speed BCI ITR. It has massive potential in the application of BCI.
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Affiliation(s)
- Dongrui Gao
- School of Computer Science, Chengdu University of Information Technology, Chengdu, China
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Wenyin Zheng
- School of Computer Science, Chengdu University of Information Technology, Chengdu, China
| | - Manqing Wang
- School of Computer Science, Chengdu University of Information Technology, Chengdu, China
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Lutao Wang
- School of Computer Science, Chengdu University of Information Technology, Chengdu, China
| | - Yi Xiao
- National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Beijing, China
- Yi Xiao
| | - Yongqing Zhang
- School of Computer Science, Chengdu University of Information Technology, Chengdu, China
- School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
- *Correspondence: Yongqing Zhang
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