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Preparation of disulfide bond-rich porous hypercrosslinked polymers for the efficient adsorption of trace methylmercury at ppb levels in aqueous solutions

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Chemical engineering Journal 2025年

作者： Huayu Liu Lijia Liu Yudan Wang Fanshuai Gao Yawen Liu Key Laboratory of Superlight Materials & Surface Technology Ministry of Education Institute of Advanced Marine Materials College of Materials Science and Chemical Engineering Harbin Engineering University Harbin 150001 China Yantai Research Institute of Harbin Engineering University Yantai 264006 China

Methylmercury (CH 3 Hg + ) is present at low levels in natural waters and is difficult to remove. Here, an organic hypercrosslinked porous polymer material (HCP-DS) enriched with disulfide bonds was designed and synthesized from dibenzyl disulfide via a Friedel-Crafts alkylation reaction. The resulting material demonstrated a high efficiency to remove methylmercury from water at ppb levels. The adsorption capacity reached 1174.765 μg·g −1 at an initial methylmercury concentration of 500 μg·L −1 . Notably, the material maintained excellent adsorption capacity across a wide pH range, in the range of pH = 5–12, the removal rate (R) of methylmercury can get over 95.56 %, even at pH = 2 or 13 it could get the removal rate over 85.08 %. HCP-DS proves great environmental adaptability, even in the presence of other metal cations or high ionic strength in aqueous environments, HCP-DS exhibited robust adsorption of trace methylmercury. Furthermore, the material demonstrated excellent reusability, maintaining high performance over five adsorption–desorption cycles. Importantly, HCP-DS effectively adsorbed methylmercury in the presence of organic matter (R > 89.24 %), it also performs an excellent capacity to remove methylmercury in a variety of natural water environments such as seawater, surface water, and groundwater underscoring its potential for practical applications in water purification.

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Origin of enhanced stability in thiocyanate substituted α-FAPbI3 analogues

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science China Chemistry 2019年第7期62卷 866-874页

作者： Zhuo Xu Ming Chen Shengzhong (Frank) Liu Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologyInstitute for Advanced Energy MaterialsSchool of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China

In the past few years,hybrid perovskites have emerged as the most promising photovoltaic materials due to their excellent optoelectronic properties,and easy fabrication ***,the long-term stability is still the main obstacle for their commercial ***,thiocyanate-doped hybrid perovskites have shown enhanced stability and impressive efficiency,but the reason is still ***,we discussed the enhanced stability of SCN-substituted pseudocubic FABX3(B=Pb^2+,Sn^2+;X=I^–,Br^–,and Cl^–)based on the density functional *** a series of calculations of Bader charge transfer,vacancy formation energies of different kinds of vacancies,decomposition enthalpy,phonon density of states,and ab initio molecular dynamics simulation,we conclude that the incorporation of SCN–can stabilize pseudocubic FABX3,and attribute the enhanced stability mainly to two factors:(1)the strong interaction between Pb^2+/Sn^2+and SCN^–,as well as the strong hydrogen bonding between FA+and X^–/SCN^–,and(2)the structural tilting induced by the incorporation of SCN^–.These findings provide alternative method for tuning the poor stability of pseudocubic FABX3,as well as for obtaining high-performance solar cells.

关键词： thiocyanate stability formamidinium perovskites density-functional theory

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Research progress of p-type Fe-based skutterudite thermoelectric materials

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Frontiers of Materials science 2021年第3期15卷 317-333页

作者： Xin TONG Zhiyuan LIU Jianglong ZHU Ting YANG Yonggui WANG Ailin XIA Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials(Ministry of Education) Anhui University of TechnologyMaanshan 243002China School of Materials Science and Engineering Anhui University of TechnologyMaanshan 243002China

Filled skutterudite is currently one of the most promising intermediate-temperature thermoelectric(TE)materials,having good thermoelectric transport performance and excellent mechanical *** the preparation of high-efficiency filled skutterudite TE devices,it is important to have p-and n-type filled skutterudite TE materials with matching ***,the current TE properties of p-type Fe-based filled skutterudite materials are worse than n-type filled skutterudite ***,how to obtain high-performance p-type Fe-based filled skutterudite materials is the key to preparation of high-efficiency skutterudite-based TE *** review summarizes some methods for optimizing the thermal transport performance of p-type filled skutterudite materials at the atomic-molecular and nano-mesoscopic scale that have been used in recent *** methods include doping,multi-atom filling,and use of low-dimensional structure and of *** addition,the synergistic optimization methods of the electrical and thermal transport parameters and advanced preparation technologies of p-type filled skutterudite materials in recent years are also briefly *** optimizational methods and advanced preparation technologies can significantly improve the TE properties of p-type Fe-based filled skutterudite materials.

关键词： p-type Fe-based filled skutterudite lattice thermal conductivity synergistic optimization preparation technology thermoelectric property

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Uniformly Dispersed Carbide Reinforcements in the Medium-Entropy High-Speed Steel Coatings by Wide-Band Laser Cladding

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Acta Metallurgica Sinica(English Letters) 2020年第8期33卷 1145-1150页

作者： Bang Dou Hui Zhang Jia-Hao Zhu Ben-Qi Xu Zi-Yi Zhou Ji-Li Wu Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials(Ministry of Education) Anhui University of TechnologyMa'anshan 243002China School of Materials Science and Engineering Anhui University of TechnologyMa'anshan 243002China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013China

A medium-entropy high-speed steel(ME-HSS)coating with the 76 at.%of Fe and multiple alloying elements was prepared by the wide-band laser *** with the commercial W6 Mo5 Cr4 V2(M2)HSS coating which contains a large number of network lamellar M2 C-type carbides along the grain boundaries,the presented ME-HSS coating has a high quantity of fi ner and more uniformly dispersed M C-type carbides;on the other hand,the coating has less retained austenite and much lower brittleness as well as similar secondary hardening eff ect and tempering hardness.

关键词： High-speed steel Medium-entropy alloy Phase selection Laser cladding

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Fabrication and electrical characteristics of flash-sintered SiO_(2)-doped ZnO-Bi_(2)O_(3)-MnO_(2) varistors

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Journal of advanced Ceramics 2020年第6期9卷 683-692页

作者： Pai PENG Yujun DENG Jingpeng NIU Liyi SHI Yunzhu MEI Sanming DU Juan LIU Dong XU Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials(Anhui University of Technology) Ministry of EducationMa'anshan 243002China Key Laboratory of Etallurgical Emission Reduction&Resources Recycling(Anhui University of Technology) Ministry of EducationMa'anshan 243002China Research Center of Nano Science and Technology Shanghai UniversityShanghai 200444China National United Engineering Laboratory for Advanced Bearing Tribology Henan University of Science and TechnologyLuoyang 471023China

The dense ZnO-Bi_(2)O_(3)-MnO_(2)(ZBMS)varistors for x=0,1,2,3 wt% were fabricated by flash sintering method under the low temperature of 850℃ within 2 *** sample temperature was estimated by a black body radiation model in the flash sintering *** crystalline phase assemblage,density,microstructure,and electrical characteristics of the flash-sintered ZBMS varistors with different SiO_(2)-doped content were *** to the XRD analysis,many secondary phases were detected due to the SiO_(2) ***,the average grain size decrease with increasing SiO_(2)-doped *** improved nonlinear characteristics were obtained in SiO_(2)-doped samples,which can be attributed to the ion migration and oxygen absorption induced by the doped SiO_(2).The flash-sintered ZBMS varistor ceramics for x=2 wt% exhibited excellent comprehensive electrical properties,with the nonlinear coefficient of 24.5,the threshold voltage and leakage current of 385 V·mm^(-1 )and 11.8μA,respectively.

关键词： flash sintering SiO_(2)additive ZBMS varistors electrical properties

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Anion-Regulated Weakly Solvating Electrolytes for High-Voltage Lithium Metal Batteries

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Energy & Environmental Materials 2023年第6期6卷 259-265页

作者： Zhipeng Jiang Jisheng Mo Chen Li Haiwen Li Qingan Zhang Ziqi Zeng Jia Xie Yongtao Li School of Materials Science and Engineering&Low-Carbon New Materials Research Center Anhui University of TechnologyMaanshan 243002China Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials of Ministry of Education Anhui University of TechnologyMaanshan 243002China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China Hefei General Machinery Research Institute Hefei 230031China

Development of advanced high-voltage electrolytes is key to achieving high-energy-density lithium metal batteries(LMBs).Weakly solvating electrolytes(WSE)can produce unique anion-driven interphasial chemistry via altering the solvating power of the solvent,but it is difficult to dissolve the majority of Li salts and fail to cycle at a cut-off voltage above 4.5 ***,we present a new-type WSE that is regulated by the anion rather than the solvent,and the first realize stable cycling of dimethoxyethane(DME)at 4.6 V without the use of the“solvent-in-salt”*** relationships between the degree of dissociation of salts,the solvation structure of electrolytes,and the electrochemical performance of LMBs were systematically *** found that LiBF_(4),which has the lowest degree of dissociation,can construct an anion-rich inner solvation shell,resulting in anion-derived anode/cathode *** to such unusual solvation structure and interphasial chemistry,the Li-LiCoO_(2)full cell with LiBF_(4)-based WSE could deliver excellent rate performance(115 mAh g^(-1)at 10 C)and outstanding cycling stability even under practical conditions,including high loading(10.7 mg cm^(-2)),thin Li(50μm),and limited electrolyte(1.2μL mg^(-1)).

关键词： high-voltage LiCoO_(2) lithium metal batteries solvation structure weakly solvating electrolyte

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Multifunctional indaceno[1,2-b:5,6-b']dithiophene chloride molecule for stable high-efficiency perovskite solar cells

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science China Chemistry 2023年第1期66卷 185-194页

作者： Yong Li Qian Zhang Lidan Liu Dapeng Wang Zhike Liu Ningyi Yuan Jianning Ding Qiang Wang Shengzhong(Frank) Liu Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi'an 710119China Dalian National Laboratory for Clean Energy iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China School of Materials Science and Engineering Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology Changzhou UniversityChangzhou 213164China

The additive strategy has emerged as an effective approach to improving the performance of perovskite solar cells(PSCs).Herein,a small acceptor-donor-acceptor type molecule indaceno[1,2-b:5,6-b’]dithiophene chloride(IDT-Cl)is designed and synthesized to advance both the efficiency and stability of FA_(0.85)MA_(0.15)PbI_(3)*** the IDT-Cl molecule,the S-group with high electron density promotes chemical bonding with the lead cations in the perovskite,resulting in enlarged grain size and smoother surface topography of the perovskite *** addition,the undercoordinated lead ions in the perovskite layer may be passivated by the carbonyl group in the 5-chloroindolin-2-one unit,thereby reducing the number of nonradiative recombination ***,the IDT-Cl adjusts the energy level mismatch between the perovskite and two adjacent carrier transport layers,leading to easy charge *** the multifunctional effect of the IDT-Cl molecule,the modified device yields a high power conversion efficiency(PCE)of 24.46%,8.8%higher than that of the control PSC(22.48%).More importantly,the hydrophobic alkyl side-chain of the IDT-Cl molecule further ensures enhanced humidity stability of the perovskite film and environmental,thermal,and light stabilities of the PSC devices.

关键词： non-fullerene multifunctional perovskite solar cell additive defect passivation

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Preparation of Al-based amorphous coatings and their properties

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Journal of Rare Earths 2021年第3期39卷 340-347,I0004页

作者： Lei Jin Le Zhang Kaige Liu Zhigang Che Kai Li Ming Zhang Bo Zhang Science and Technology on Power Beam Process Laboratory AVIC Manufacturing Technology InstituteBeijing 100024China Department of Materials Application Research AVIC Manufacturing Technology InstituteBeijing 100024China Aeronautical Key Laboratory of Advanced Surface Engineering Technology AVIC Manufacturing Technology InstituteBeijing 100024China

Al_(86)Ni_(8)Co_(1)La_(1)Y_(2)Gd_(2) amorphous coatings were prepared using cold gas kinetic spray *** results show that Al_(86)Ni_(8)Co_(1)La_(1)Y_(2)Gd_(2) amorphous coatings are achieved with the porosity about 3.2%,thickness about 893 μm,the amount of amorphous phase about 82.5%,the hardness about 300 *** corrosion potential and anti-corrosion life of 7075 T6 alloy aluminum are about-0.78 V and 72 h,*** electrochemical analysis and neutral salt spray are about-0.69 V corrosion potential and 274 h anti-corrosion life for amorphous Al-based coatings,***,the life of the Albased amorphous coatings is about 3.8 times that of 7075 T6 aluminum ***,the failure mechanism was analyzed using TEM in this *** a word,Al_(86)Ni_(8)Co_(1)La_(1)Y_(2)Gd_(2) coatings keep dense structure,high amorphous content,favorable amorphous phase stabilizing ability and longer anticorrosion *** is,Al_(86)Ni_(8)Co_(1)La_(1)Y_(2)Gd_(2) coatings have better comprehensive ***,these findings indicate that the present Al_(86)Ni_(8)Co_(1)La_(1)Y_(2)Gd_(2) amorphous coatings prepared using cold gas kinetic spray technique can protect aluminum alloy very well and they can be considered to be used in aviation field.

关键词： Al-based amorphous material Coatings Cold spray Properties Rare earths

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Boosting carrier dynamics of BiVO_(4) photoanode via heterostructuring with ultrathin BiOI nanosheets for enhanced solar water splitting

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Journal of Materials science & technology 2021年第20期79卷 21-28页

作者： Can Li Fan Feng Jie Jian Youxun Xu Fan Li Hongqiang Wang Lichao Jia Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal University620 West Chang’an StreetXi’anShaanxi710119China State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical University and Shaanxi Joint Labortary of GrapheneXi’an710072China

Bismuth vanadate(BiVO_(4))has been one of the most promising candidates for solar water splitting while still suffers from poor bulk charge transport that limits its solar to hydrogen conversion *** demonstrate in this work an efficient strategy for boosting bulk charge transport of BiVO_(4) through the facile impregnation of as-prepared BiVO_(4) photoanode in the precursor solution of ultrathin BiOI *** impregnation creates increased oxygen vacancies in the bulk of BiVO_(4) through the reduction of V^(5+)to V^(4+)by I^(-),which greatly improves bulk separation efficiency for BiVO_(4)-BiOI up to 65.9%at 1.23 V_(RHE) from the original 51.9%of pure BiVO_(4).Moreover,the decoration of the BiOI nanosheets on BiVO_(4) photoanode is also beneficial for addressing the carrier dynamics at surface due to the matched energy levels of BiOI nanosheets and BiVO_(4).The introduced plenty of oxygen vacancies in the bulk of BiVO_(4) and the built-in electric field in BiVO_(4)-BiOI synergistically improve the photocurrent density at 1.23 V_(RHE) up to 3.88 mA cm^(-2).We believe that such facile impregnation strategy will pave an alternative way to the development of highly efficient BiVO_(4) photoanode.

关键词： Bismuth vanadate BiOI nanosheets Heterojunction Solution impregnation Oxygen vacancy

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Interfacial engineering of holey platinum nanotubes for formic acid electrooxidation boosted water splitting

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Journal of Energy Chemistry 2023年第2期77卷 209-216,I0006页

作者： Zi-Xin Ge Yu Ding Tian-Jiao Wang Feng Shi Pu-Jun Jin Pei Chen Bin He Shi-Bin Yin Yu Chen Key Laboratory of Macromolecular Science of Shaanxi Province Key Laboratory of Applied Surface and Colloid Chemistry(Ministry of Education)Shaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710062ShaanxiChina College of New Materials and New Energies Shenzhen Technology UniversityShenzhen 518118GuangdongChina MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured MaterialsGuangxi UniversityNanning 530004GuangxiChina

Both structure and interface engineering are highly effective strategies for enhancing the catalytic activity and selectivity of precious metal *** this work,we develop a facile pyrolysis strategy to synthesize the high-quality holey platinum nanotubes(Pt-H-NTs)using nanorods-like Pt^(Ⅱ)-phenanthroline(PT)coordination compound as self-template and self-reduction ***,an up-bottom strategy is used to further synthesize polyallylamine(PA)modified Pt-H-NTs(Pt-HNTs@PA).PA modification sharply promotes the catalytic activity of Pt-H-NTs for the formic acid electrooxidation reaction(FAEOR)by the direct reaction ***,PA modification also elevates the catalytic activity of Pt-H-NTs for the hydrogen evolution reaction(HER)by the proton enrichment at electrolyte/electrode *** from the high catalytic activity of Pt-H-NTs@PA for both FAEOR and HER,a two-electrode FAEOR boosted water electrolysis system is fabricated by using Pt-H-NTs@PA as bifunctio nal *** FAEOR boosted water electrolysis system only requires the operational voltage of 0.47 V to achieve the high-purity hydrogen production,showing an energy-saving hydrogen production strategy compared to traditional water electrolysis system.

关键词： Holey platinum nanotubes Chemical functionalization Formic acid oxidation reaction Hydrogen evolution reaction Water splitting

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