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SSRN 2022年

作者： Sun, Xiaoqi Wang, Lei Gao, Yun Chai, Yujun College of Chemistry and Materials Science Hebei Normal University Hebei Shijiazhuang050024 China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fujian Fuzhou350002 China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Fujian Research Center for Rare Earth Engineering Technology Xiamen Institute of Rare Earth Materials Haixi Institute Chinese Academy of Sciences Fujian Xiamen361021 China Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths Ganjiang Innovation Academy Chinese Academy of Sciences Jiangxi Ganzhou341000 China

Electro-sorption is an effective strategy to remove metal ions from aqueous solution without being polluted by chemical reagents. It has been used in water purification and desalination, but there is little research on the recovery of rare earth. In this article, sodium diphenylamine sulfonate (SDAS) modified activated carbon (AC) was coated on carbon felt (CF) and used as working electrode (SDAS/AC-CF). The recoveries of La(III), Nd(III) and Ce(III) on the SDAS/AC-CF were studied by electro-sorption. The effects of reactive time, concentrations and temperature on the recovery of La(III) were evaluated. Meanwhile, the adsorptive capacity, kinetics and isotherm of aqueous La(III) were determined. As shown in the studies, La(OH) 3 is formed on the surface of modified SDAS/AC-CF electrode. After 500 minutes of reaction, the adsorption capacity reaches nearly 600 mg g -1 . In the three adsorption-desorption cycles, the adsorption capacity remains stable. The obtained rare earth products are La(OH) 3, Nd(OH) 3 and CeO 2 , respectively. After nearly 180 minutes of reaction, the corresponding adsorption capacities are 275 mg g -1 and 365 mg g -1 , respectively. The electro-sorption has revealed potential application value in the recovery of rare earth from wastewater. © 2022, The Authors. All rights reserved.

关键词： Recovery

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Recent advances in non-metal doped titania for solar-driven photocatalytic/photoelectrochemical water-splitting

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能源化学 2022年第3期66卷 529-559页

作者： Ying-Ying Wang Yan-Xin Chen Tarek Barakat Yu-Jia Zeng Jing Liu Stéphane Siffert Bao-Lian Su Laboratory of Inorganic Materials Chemistry(CMI) University of NamurB-5000 NamurBelgium Namur Institute of Structured Matter(NISM) University of NamurB-5000 NamurBelgium Laboratory of Inorganic Materials Chemistry(CMI) University of NamurB-5000 NamurBelgium CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002FujianChina College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060GuangdongChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430074HubeiChina Unité de Chimie Environnementale et Interactions sur le Vivant Université Littoral Cote d'Opale145Avenue Maurice Schuman59140 DunkerqueFrance Laboratory of Inorganic Materials Chemistry(CMI) University of NamurB-5000 NamurBelgium Namur Institute of Structured Matter(NISM) University of NamurB-5000 NamurBelgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430074HubeiChina

Photocatalytic(PC)/Photoelectrochemical(PEC)water splitting under solar light irradiation is consid-ered as a prospective technique to support the sustainable and renewable H2 economy and to reach the ultime goal of carbon ***2 based photocatalysts with high chemical stability and excellent photocatalytic properties have great potential for solar-to-H2 *** conquer the challenges of the large band-gap and rapid recombination of photo generated electron-holepairs in TiO2,non-metal doping turns out to be economic,facile,and effective on boosting the visible light *** localized defect states such as oxygen vacancy and Ti3+generated by non-metal doping are located in the band-gap of TiO2,which result in the reduction of band-gap,thus a red-shift of the absorption *** hetero dop-ing atoms such as B3+,I7+,S4+/S6+,P5+can also act as electron donors or trap sites which facilitate the charge carrier separation and suppress the recombination of electron-hole *** this comprehensive review,we present the most recent advances on non-metal doped TiO2 photocatalysts in terms of funda-mental aspects,origin of visible light activity and the PC/PEC behaviours for water *** particular,the characteristics of different non-metal elements(N,C,B,S,P,Halogens)as dopants are discussed in details focusing on the synthesis approaches,characterization as well as the efficiency of PC and PEC water *** present review aims at guiding the readers who want quick access to helpful infor-mation about how to efficiently improve the performance of photocatalysts by simple doping strategies and could stimulate new intuitive into the new doping strategies.

关键词： Photocatalytic/Photoelectrochemical water splitting Titania Non-metal doping Visible light photocatalysis

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Stress-induced CsPbBr3 nanocrystallization on glass surface:Unexpected mechanoluminescence and applications

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Nano Research 2019年第5期12卷 1049-1054页

作者： Xiaoqiang Xiang Hang Lin Renfu Li Yao Cheng Qingming Huang Ju Xu Congyong Wang Xueyuan Chen Yuansheng Wang CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China Instrumentation Analysis and Research Center Fuzhou UniversityFuzhou 350002China

In this work,we discovered an unexpected mechanoluminescence (ML) phenomena occurring when transforming amorphous into crystalline,due to the stress-induced precipitation of CsPbBr3 perovskite nanocrystals on glass *** is revealed that,unlike the conventional thermal-induced phase transformation mechanism,the breakage of bonding of glass network provides the energy for nucleation and growth,and the shear stress avoids the long-range migration of structural units for *** unique ML phenomenon enables the visualization of dynamical force that is inaccessible by common strategy,and so,opens up some novel applications,such as the pressure-sensitive "glassy pencil" to learn people's writing habits,and the pb^2+-detection with good sensitivity and *** findings not only demonstrate an effective route for the preparation of perovskite materials in a green,time-saving,low cost,and scalable way,enrich the knowledge of glass crystallization mechanism,but also exploit a useful avenue to quantitatively visualize the dynamical force.

关键词： perovskite nanocrystals CsPbBr3 mechanoluminescence glass ceramics nanocrystallization

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Conduction modulation of solution-processed two-dimensional materials

arXiv

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arXiv 2023年

作者： Liu, Songwei Fan, Xiaoyue Wen, Yingyi Liu, Pengyu Liu, Yang Pei, Jingfang Yang, Wenchen Song, Lekai Pan, Danmei Ma, Teng Lin, Yue Wang, Gang Hu, Guohua Department of Electronic Engineering The Chinese University of Hong Kong N. T. Shatin Hong Kong School of Physics Beijing Institute of Technology Beijing100081 China Shun Hing Institute of Advanced Engineering The Chinese University of Hong Kong N. T. Shatin Hong Kong CAS Key Laboratory of Design and Assembly of Functional Nanostructures State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fujian Fuzhou350002 China Department of Applied Physics Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong

Solution-processed two-dimensional (2D) materials hold promise for their scalable applications. However, the random, fragmented nature of the solution-processed nanoflakes and the poor percolative conduction through their discrete networks limit the performance of the enabled devices. To overcome the problem, we report conduction modulation of the solution-processed 2D materials via the Stark effect. Using liquid-phase exfoliated molybdenum disulfide (MoS2) as an example, we demonstrate nonlinear conduction modulation with a switching ratio of >105 by the local fields from the interfacial ferroelectric P(VDF-TrFE). Through density-functional theory calculations and in situ Raman scattering and photoluminescence spectroscopic analysis, we understand the modulation arises from a charge redistribution in the solution-processed MoS2. Beyond MoS2, we show the modulation may be viable for the other solution-processed 2D materials and low-dimensional materials. The effective modulation can open their electronic device applications. Copyright © 2023, The Authors. All rights reserved.

关键词： Layered semiconductors

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Thermally boosted upconversion and downshifting luminescence in Sc2(MoO4)3:Yb/Er with two-dimensional negative thermal expansion

Research Square

引用

Research Square 2021年

作者： Liao, Jinsheng Wang, Minghua Lin, Fulin Han, Zhuo Tu, Datao Chen, Xueyuan Qiu, Bao Wen, He-Rui School of Chemistry and Chemical Engineering Jiangxi University of Science and Technology Ganzhou341000 China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fujian Fuzhou350002 China Chinese Academy of Sciences Zhejiang Ningbo315201 China

Lanthanide (Ln3+)-doped phosphors generally suffer from thermal quenching, in which their photoluminescence (PL) intensities decrease at the higher temperature. Herein, we report a class of unique two-dimensional negative-thermal-expansion phosphor of Sc2(MoO4)3:Yb/Er. By virtue of the reduced distances between sensitizers and emitters as well as confined energy migration with increasing the temperature, a 45-fold enhancement of green upconversion (UC) luminescence and a 450-fold enhancement of near-infrared downshifting (DS) luminescence of Er3+ are achieved from 25 to 500 C. The thermally boosted UC and DS luminescence mechanism is systematically investigated through in situ temperature-dependent Raman spectroscopy, synchrotron X-ray diffraction and PL dynamics. Moreover, the luminescence lifetime of 4I11/2 of Er3+ in Sc2(MoO4)3:Yb/Er displays a strong temperature dependence, enabling ratiometric thermometry with the highest relative sensitivity of 13.4%/K at 298 K. These findings may gain a vital insight into the design of negative-thermal-expansion Ln3+-doped phosphors for versatile applications. © 2021, CC BY.

关键词： Photoluminescence

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Microbial Electrolysis Cells for Hydrogen Production

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Chinese Journal of Chemical Physics 2020年第3期33卷 263-284,I0002页

作者： Li-juan Xiang Ling Dai Ke-xin Guo Zhen-hai Wen Su-qin Ci Jing-hong Li Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry&Chemical BiologyTsinghua UniversityBeijing 100084China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China

Microbial electrolysis cells(MECs)present an attractive route for energy-saving hydrogen(H2)production along with treatment of various wastewaters,which can convert organic matter into H2 with the assistance of microbial ***,the development of such renewable technologies for H2 production still faces considerable challenges regarding how to enhance the H2 production rate and to lower the energy and the system *** this review,we will focus on the recent research progress of MEC for H2 ***,we present a brief introduction of MEC technology and the operating mechanism for H2 ***,the electrode materials including some typical electrocatalysts for hydrogen production are summarized and *** also highlight how various substrates used in MEC affect the associated performance of hydrogen *** we presents several key scientific challenges and our perspectives on how to enhance the electrochemical performance.

关键词： Microbial electrolysis cells H2 production Electrocatalysis Wastewater treatment Electrode materials

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Preface to the Special Issue of Rare Earth Luminescent Materials

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Journal of Rare Earths 2020年第5期38卷 I0006-I0006页

作者： Jean-Claude G.Bünzli Xiaojun Wang Xueyuan Chen Institute of Chemical Sciences and Engineering Swiss Federal Institute of TechnologyLausanne(EPFL) Department of Physics Georgia Southern UniversityStatesboroGA 30460USA CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou350002China

Lanthanide photonics,and more particularly lanthanide luminescence,is at the heart of applications as diverse as lighting devices,displays,lasers,optical fibers and associated telecommunication networks,security marki... 详细信息

关键词： lighting fibers networks

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Material Extrusion-Based 3d Printing for the Fabrication of Bacteria into functional Biomaterials: The case Study of Ammonia Removal Application

SSRN

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SSRN 2022年

作者： Li, Yan Peng, Shuqiang Li, Kunrong Qin, Dan Weng, Zixiang Li, Jiangwei Zheng, Longhui Wu, Lixin Yu, Chang-Ping CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterial Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fujian Fuzhou350002 China Key Laboratory of Urban Pollutant Conversion Institute of Urban Environment Chinese Academy of Sciences 1799 Jimei Road Fujian Xiamen361021 China School of Ecological Environment and Urban Construction Fujian University of Technology Fujian Fuzhou350118 China Water Innovation Low Carbon and Environmental Sustainability Research Center National Taiwan University Taipei106 Taiwan University of Chinese Academy of Sciences Beijing100049 China

3D printing provides a new way in microbial immobilization technology and creates innovative designed bioactive structures containing microorganisms for remediation of environmental pollution. However, the bio-ink design remains a critical challenge due to the difficulty in creating a durable and bio-friendly material. Here, a novel dual-crosslinking PEGDA-Alginate-PVA-Nanoclay (PAPN) bio-ink containing one heterotrophic bacterium is reported for 3D printing functional biomaterial with the capabilities of ammonia removal. The results showed that PAPN 3D printed bio-scaffolds could effectively remove 96.17% ammonia within 12 hours, and the removal rate increased within repeated use owing to the growth of bacteria inside the bio-scaffolds. Preservation of the bio-scaffolds under room temperature without a culture medium for more than 8 days still maintained the microbial activity for ammonia removal. It is demonstrated that visible-light-based 3D printing procedures could maintain high cell viability for the majority of bacteria, and the porous structures of 3D bio-scaffolds could allow the permeability of nutrients for the growth of bacteria. This work demonstrates the potential of the dual crosslinked PAPN 3D bio-scaffold for the production and application of immobilized functional bacteria for wastewater treatment. © 2022, The Authors. All rights reserved.

关键词： Extrusion

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Construction of Porous Organic/Inorganic Hybrid Polymers Based on Polyhedral Oligomeric Silsesquioxane for Energy Storage and Hydrogen Production from Water

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Polymers 2023年第1期15卷 182-182页

作者： Mohamed, Mohamed Gamal Elsayed, Mohamed Hammad Ye, Yunsheng Samy, Maha Mohamed Hassan, Ahmed E. Mansoure, Tharwat Hassan Wen, Zhenhai Chou, Ho-Hsiu Chen, Kuei-Hsien Kuo, Shiao-Wei Department of Materials and Optoelectronic Science College of Semiconductor and Advanced Technology Research Center for Functional Polymers and Supramolecular Materials National Sun Yat-sen University Kaohsiung804 Taiwan Chemistry Department Faculty of Science Assiut University Assiut71515 Egypt Institute of Atomic and Molecular Sciences Academia Sinica Taipei10617 Taiwan Department of Chemistry Faculty of Science Al-Azhar University Nasr City Cairo11884 Egypt CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou350002 China University of Chinese Academy of Sciences Beijing100049 China Department of Chemical Engineering National Tsing Hua University Hsinchu30013 Taiwan Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung807 Taiwan

In this study, we used effective and one-pot Heck coupling reactions under moderate reaction conditions to construct two new hybrid porous polymers (named OVS-P-TPA and OVS-P-F HPPs) with high yield, based on silsesquioxane cage nanoparticles through the reaction of octavinylsilsesquioxane (OVS) with different brominated pyrene (P-Br4), triphenylamine (TPA-Br3), and fluorene (F-Br2) as co-monomer units. The successful syntheses of both OVS-HPPs were tested using various instruments, such as X-ray photoelectron (XPS), solid-state 13C NMR, and Fourier transform infrared spectroscopy (FTIR) analyses. All spectroscopic data confirmed the successful incorporation and linkage of P, TPA, and F units into the POSS cage in order to form porous OVS-HPP materials. In addition, the thermogravimetric analysis (TGA) and N2 adsorption analyses revealed the thermal stabilities of OVS-P-F HPP (Td10 = 444 °C;char yield: 79 wt%), with a significant specific surface area of 375 m2 g–1 and a large pore volume of 0.69 cm3 g–1. According to electrochemical three-electrode performance, the OVS-P-F HPP precursor displayed superior capacitances of 292 F g−1 with a capacity retention of 99.8% compared to OVS-P-TPA HPP material. Interestingly, the OVS-P-TPA HPP showed a promising HER value of 701.9 µmol g−1 h−1, which is more than 12 times higher than that of OVS-P-F HPP (56.6 µmol g−1 h−1), based on photocatalytic experimental results. © 2022 by the authors.

关键词： Hydrogen production

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Hybrid Acid/alkali All Covalent Organic Frameworks Battery

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Angewandte Chemie 2023年第18期135卷

作者： Yunpeng Xu Pingwei Cai Kai Chen Qingsong Chen Prof. Dr. Zhenhai Wen Prof. Long Chen Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Science Tianjin University Tianjin 300072 P. R. China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Materials and Techniques toward Hydrogen Energy Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China

Covalent organic frameworks (COFs), thanks to their adjustable porous structure and abundant build-in functional motifs, have been recently regarded as promising electrode materials for a variety of batteries. There still remain grand opportunities to further utilizing their merits for developing advanced COFs-based batteries. In this paper, we propose a hybrid acid/alkali all-COFs battery by coupling pyrene-4,5,9,10-tetraone based COF cathode with anthraquinone based COF anode. In such a hybrid acid/alkali all-COFs battery, the cathodic COF favorably works in acid with a relatively positive potential, while the anodic COF preferably runs in alkali with a relatively negative potential. It thus can deliver a decently high discharge capacity of 92.97 mAh g −1 with a wide voltage window of 2.0 V, and exhibit high energy density of 74.2 Wh kg −1 along with a considerable cyclic stability over 300 cycles. The development of the proof-of-concept all-COFs battery may drive forward the improvement of newly cost-effective and performance-reliable energy storage devices.

关键词： All COFs batteries Anode Cathode Hybrid Acid/alkali Device

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