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Electron engineering of nickel phosphide for Ni^(δ+) in electrochemical nitrate reduction to ammonia

Nano Research 2024年第6期17卷 4864-4871页

作者： Jie Hu Hao Huang Miao Yu Shuang Wang Jinping Li College of Environmental Science and Engineering Taiyuan University of TechnologyJinzhong 030600China School of Sustainable Energy Materials and Science Jinhua Advanced Research InstituteJinhua 321000China Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization Taiyuan University of TechnologyTaiyuan 030024China

The electrochemical reduction of nitrate to ammonia(ENRA)provides an efficient approach to remove nitrate pollution and achieve ammonia production ***,inspired by bio-enzyme in denitrifying bacteria,a carbon-coated nickel phosphide(NiPC)nanosheet derived from metal-organic frameworks(MOFs)is proposed as an efficient catalyst for *** electron engineering,controllable Ni^(δ+)in nickel phosphide is achieved by regulating the degree of phosphating,which enhances its activity for the hydrogenation of *** the result,Niδ+becomes one of dominating factors determining the efficiency of the ENRA reaction in nickel *** optimal NiPC catalyst exhibits impressive property toward ENRA:NH_(4)^(+)Faraday efficiency of 96.68%,NH4+selectivity of 99.04%,and nitrate conversion rate of 90.43%under low nitrate concentration(200 mg·L^(−1)).This work opens a new avenue for the design of next-generation catalysts through electron engineering for ENRA.

关键词： electron engineering transition metal phosphide nitrate reduction ammonia production metal-organic frameworks

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Catalytic effect of MOF-derived transition metal catalyst FeCoS@C on hydrogen storage of magnesium

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Journal of Materials science & technology 2023年第7期138卷 59-69页

作者： Yaokun Fu Lu Zhang Yuan Li Sanyang Guo Zhichao Yu Wenfeng Wang Kailiang Ren Qiuming Peng Shumin Han State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China Hebei Key Laboratory of Applied Chemistry School of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004China

The introduction of the heterogeneous catalysts with high activity can significantly improve hydrogen storage performance of MgH_(2),therefore,in this paper,we synthesize a carbon-supported transition metal compound,FeCoS@C derivative from ZIF-67,by utilizing the in situ formed C dispersive multiphase Mg_(2)Co,α-Fe,Co_(3)Fe_(7),and MgS to implement catalysis to MgH_(2).Noteworthily,MgH_(2)-FeCoS@C rapidly ab-sorbs 6.78 wt%H_(2)within 60 s at 573 K and can also absorb 4.56 wt%H_(2)in 900 s at 473 ***,the addition of FeCoS@C results in decreasing of the initial dehydrogenation temperatures of MgH_(2)from 620 to 550 *** dehydrogenation activation energy of MgH_(2)decreases from 160.7 to 91.9 kJ mol^(-1).Studies show that the Mg_(2)Co,α-Fe,and Co_(3)Fe_(7)act as“hydrogen channels”to accelerate hydrogen transfer due to the presence of transition metals,and MgS with excellent catalytic effect formed from MgH_(2)-FeCoS@C provides a strong and stable catalytic ***,the carbon skeleton obtained by the carbonization of ZIF-67 not only serves as a dispersion for the multiphase catalytic system,but also provides more active sites for the *** study shows that the multiphase and multiscale catalytic system provides an effective strategy for improving the hydrogen storage performance of MgH_(2).

关键词： Hydrogen storage material Magnesium hydride Heterogeneous catalyst Synergistic catalytic MOF materials

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Incorporating Co3O4/C modified MnOx/SiO2 into tailored sponge for bifunctional photothermal water evaporation and pollutant degradation

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稀有金属（英文版） 2025年第2期44卷 1122-1138页

作者： Ya-Rao Gao Hong-Yao Zhao Meng-Ting Liu Qian-Nan Liu Yan-Yun Wang Lu-Lu Li Jian-Wei Yuan Yi-Yan Song Fu Yang School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Chemical Engineering and Materials Changzhou Institute of TechnologyChangzhou 213022China Department of Clinical Laboratory The Fifth People's Hospital of SuzhouThe Affiliated Infectious Diseases Hospital of Soochow UniversitySuzhou 215000China

In this study,cobalt-incorporated polydopamine coating onto Mn-modified mesoporous silica and succes-sive graphitization treatment make the resulting composite afford abundant porosity,multiple metal active species,polar N sites,and excellent light-to-heat conversion *** controlled graphitization temperature was optimized to improve the activity state of metal *** results reveal that Co3O4 nanoparticles incorporated thin-layer carbon formed onto the Mn-confined mesoporous silica,and more Co(Ⅱ)and Mn(Ⅲ)were generated in the MS-Co-500N2 compared to MS-Co-500Air,which could cause the accelerated reaction cycles in the potassium peroxymono-sulfate complex salt(PMS)*** degradation experiments demonstrated that the catalyst almost com-pletely degraded bi phenol A within 10 min with the reaction rate constant of 0.56 min-1,nearly 205 times enhancement compared to the *** free radicals trapping and quenching control demonstrated the dominant role of 1O2 and·O2 in the degradation *** to the efficient incorporation of Co3O4 nanoparticles and thin-layer carbon,the photothermal conversion prop-erties were explored and utilized for solar-driving interface water evaporation and cleanwater *** explore the practical application possibility in treating complicated polluted wastewater,the MS-Co-500N2 materials were fixed on the melamine sponge by Ca ions-trigger alginate crosslinking strategy,and the integrated monolith evapo-rator shows an excellent water evaporation performance(1.52 kg·m-2·h-1)and synchronous pollutant removal in biphenol A(94％,10 min),carbamazepine(92％,10 min),oxytetracycline(84％,20 min)and norfloxacin(84％,20 min).

关键词： Bimetallic synergy Advanced oxidation processes(AOPs) Photothermal conversion Solar water evaporation

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Controlled sintering for cadmium stabilization by beneficially using the dredged river sediment

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Frontiers of environmental science & engineering 2023年第5期17卷 105-115页

作者： Yunxue Xia Dong Qiu Zhong Lyv Jianshuai Zhang Narendra Singh Kaimin Shih Yuanyuan Tang State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China Department of Civil Engineering Faculty of EngineeringThe University of Hong KongHong Kong 999077China Environmental Science Center Decarbonisation and Resource ManagementalBritish Geological SurveyNottinghamshireKeyworth NG125GGUK

Cd-bearing solid wastes are considered to be a serious threat to the environment,and effective strategies for their treatment are urgently *** sintering has been considered as a promising method for efficiently incorporating heavy metal-containing solid wastes into various ceramic ***-rich dredged river sediment,especially Al and Si-containing oxides,can be treated as alternative ceramic precursors rather than being disposed of as solid *** examine the feasibility of using waste sediment for Cd stabilization and the phase transition mechanisms,this study conducted a sintering scheme for the mixtures of CdO and dredged river sediment with different(Al+Si):Cd mole *** investigations have been performed on phases transformation,Cd incorporation mechanisms,elemental distribution,and leaching behaviors of the sintered *** showed that Cd incorporation and transformation in the sintered products were influenced by the mole ratio of(Al+Si):*** the high-Cd series((Al+Si):Cd=6:1),CdSiO_(3),Cd_(2)SiO_(4),CdAl_(2)(SiO_(4))_(2) and Cd_(2)Al_(2)Si_(2)O_(9) were predominant Cd-containing product phases,while Cd2Al2Si2O9 was replaced by CdAl_(4)O_(7) when the mole ratio of(Al+Si):Cd was 12:1(low-Cd series).Cd was efficiently stabilized in both reaction series after being sintered at≥900℃,with<5%leached ratio even after a prolonged leaching time,indicating excellent long-term Cd *** study demonstrated that both Cd-containing phases and the amorphous Al-/Si-containing matrices all played critical roles in Cd stabilization.A promising strategy can be proposed to simultaneously reuse the solid waste as ceramic precursors and stabilize heavy metals in the ceramic products.

关键词： Dredged river sediments Cadmium Sintering Stabilization Leaching

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Study of dust pollution control effect based on orthogonal test and CFD numerical simulations

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environmental science and Pollution Research 2024年第31期31卷 43712-43730页

作者： Nie, Wen Jiang, Chenwang Liu, Qiang Guo, Lidian Zhang, Haonan Cheng, Chuanxing Zhu, Zilian College of Safety and Environmental Engineering Shandong University of Science and Technology Shandong Province Qingdao266590 China State Key Laboratory of Mining Disaster Prevention and Control Co-Found By Shandong Province and the Ministry of Science and Technology Shandong University of Science and Technology Qingdao266590 China

To control the diffusion of high concentrations of coal dust during tunnel boring and minimize the threat to the life and health of coal miners, theoretical analysis, numerical simulations, and field measurements were combined in this study. First, computational fluid dynamic simulation software was used to simulate the generation of dust particles and their transport pattern in the tunnel. Subsequently, an innovative orthogonal test was performed to study the effect of four ventilation parameters [the pressure airflow rate (Q), distance between the air duct center and heading face (LA), distance between the air duct center and tunnel floor (LB), and distance between the air duct center and nearest coal wall (LC)] on dust diffusion. According to the orthogonal test results, the optimal ventilation parameters for effective dust control are as follows: Q = 1400 m3/min, LA = 7 m, LB = 2.8 m, and LC = 1 m. The optimized set of ventilation parameters was applied to the Wangpo 3206 working face. The results show that dust diffusion in the tunnel was effectively controlled and that the air quality was sufficiently improved. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Coal

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Photosensitivity sources of dissolved organic matter from wastewater treatment plants and their mediation effect on 17α-ethinylestradiol photodegradation

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Frontiers of environmental science & engineering 2023年第6期17卷 49-62页

作者： Zhicheng Liao Bei Li Juhong Zhan Huan He Xiaoxia Yang Dongxu Zhou Guoxi Yu Chaochao Lai Bin Huan Xuejun Pan Faculty of Environmental Science and Engineering Kunming University of Science and TechnologyKunming 650500China Research Institute for Environmental Innovation(Suzhou) TsinghuaSuzhou 215163China Yunnan Provincial Key Laboratory of Carbon Sequestration and Pollution Control in Soils Kunming 650500China

Dissolved organic matter(DOM)from each treatment process of wastewater treatment plants(WWTPs)contains abundant photosensitive substances,which could significantly affect the photodegradation of 17α-ethinylestradiol(EE2).Nevertheless,information about EE2 photodegradation behavior mediated by DOM from diverse WWTPs and the photosensitivity sources of such DOM are *** study explored the photodegradation behavior of EE2 mediated by four typical WWTPs’DOM solutions and investigated the photosensitivity sources of DOM in the anaerobic-anoxic-oxic(A2/O)*** parallel factor analysis identified three varying fluorescing components of these DOM,tryptophan-like substances or protein-like substances,microbial humuslike substances,and humic-like *** photodegradation rate constants of EE2 were positively associated with the humification degree of DOM(P<0.05).The triplet state substances were responsible for the degradation of *** extracted from the A2/O process,especially in the secondary treatment process had the fastest EE2 photodegradation rate compared to that of the other three *** types of components(water-soluble organic matter(WSOM),extracellular polymeric substance,humic acid,and fulvic acid)were separated from the A2/O process *** had the highest promotion effect on EE2 *** acid-like components and humic acid-like organic compounds in WSOM were speculated to be important photosensitivity substances that can generate triplet state *** research explored the physicochemical properties and photosensitive sources of DOM in WWTPs,and explained the fate of estrogens photodegradation in natural waters.

关键词： Photosensitivity sources 17α-ethinylestradiol Photodegradation Dissolved organic matter Wastewater treatment plants

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Decoding and quantitative detection of antibiotics by a luminescent mixed-lanthanide-organic framework

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Frontiers of environmental science & engineering 2022年第12期16卷 55-65页

作者： Yuping Wang Jing Xia Yanxin Gao Department of Environmental Science and Engineering Fuzhou UniversityMinhou350108China State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resources and Environmental EngineeringEast China University of Science and TechnologyShanghai200237China

Due to the potential risk of antibiotics to the environment,the development of inexpensive,simple,and reliable antibiotic detection methods is significant but also faces *** this work,several lanthanide-organic frameworks(LOFs),constructed from lanthanide ions(Eu3+and/or Tb3+)and 1,3,5-benzene-tricarboxylic acid(BTC),were synthesized by solvothermal ***-S3 with comparable emission peaks of 5D4→7F5(Tb3+,545 nm)and 5D0→7F2(Eu3+,618 nm)was selected as a luminescent *** this system,the highly efficient energy transferred from the organic linker to lanthanide ions and from Tb3+to Eu3+***-S3 sensor was capable of decoding antibiotics by distinguishable emission intensity ***,a two-dimensional decoded map of antibiotics was *** linear relationship between antibiotic concentration and emission intensity ratio indicated the quantitative determination of antibiotics was *** a typical analyte,the response mechanism of nalidixic acid(NA)was investigated in *** competition of NA and BTC for UV light absorption,as well as the binding propensity of NA and Tb,affected the organic linkers-to-lanthanide ions and Tb-to-Eu energy transfer,resulting in the change of fluorescence intensity *** self-calibrating mixed-LOF sensor overcame the uncontrollable errors of the traditional absolute emission intensity method and generated stable luminescent signals in multiple ***,the integration of LOF-S3 with polymer fibers enabled the formation of a LOF-polymer fibrous composite with fluorescence detection capability,which is a promising portable sensor for practical applications.

关键词： Antibiotics Sensor Luminescence Lanthanide-organic frameworks

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Deciphering the molecular composition and sources of dissolved organic matter in urban rivers based on optical spectroscopy and FT-ICR-MS analyses

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Carbon Research 2024年第1期3卷 1-14页

作者： Ren, Yi Liu, Shasha Liu, Leizhen Suo, Chengyu Fu, Rui Zhang, Yuxin Qiu, Yue Wu, Fengchang School of Energy and Environmental Engineering University of Science and Technology Beijing100083 China State Key Laboratory of Environment Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China College of Grassland Science and Technology China Agricultural University Beijing100193 China

The components and sources of dissolved organic matter (DOM) in urban water bodies are extremely complicated due to multiple environmental and anthropogenic factors. The comprehensive analysis of the DOM molecular composition is crucial for deep understanding their reactivities, environmental behaviors, and fates in aquatic ecosystems, thereby improving our ability to monitor and protect aquatic systems. In this study, ultraviolet–visible spectroscopy (UV–Vis) and excitation-emission matrix fluorescence spectroscopy (EEM) were combined with Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) to investigate the optical and molecular characteristics of DOM in the Yongding River (YDH) and Beiyun River (BYH), two typical urban rivers with distinct landscapes and anthropogenic influences in Beijing, China. Results showed that DOM in BYH was mainly composed of proteins from microbial and sewage sources with low aromaticity, molecular weight, and abundant saturated labile compounds, along with a significant presence of anthropogenic surfactants. Whereas the YDH was primarily composed of humic substances from plant- and soil-derived terrestrials, with higher aromaticity humification, unsaturation and refractory compounds. In addition, due to the accumulation of refractory compounds, the concentration of DOC and the degree of organic pollution increased from upstream to downstream of the rivers, manifested as an increase in humification and molecular weight at the molecular level. Our results confirmed that landscape urbanization broadly modified the structure of DOM to be more aliphatic and saturated. The findings of this study will provide important insights into the chemdiverse molecular composition of DOM undergoing different influences from human activities and provide significant guidance for water quality management in urban river ecosystems. Graphical Abstract: (Figure presented.) © The Author(s) 2024.

关键词： Unsaturated compounds

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High temperature electrochemical discharge performance of LaFeO3 coated with C/Ni as anode material for NiMH batteries

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Progress in Natural science:Materials International 2022年第6期32卷 684-692页

作者： Kailiang Ren Jiajia Miao Wenzhuo Shen Huanhuan Su Yunpeng Pan Jiajin Zhao Xiangyu Pan Yuan Li Yaokun Fu Lu Zhang Shumin Han State Key Laboratory of Metastable Materials Science and Technology Yanshan University School of Environmental and Chemical Engineering Yanshan University

Perovskite LaFeO3is considered as a promising new anode material for nickel/metal hydride batteries due to its low cost,environmental friendliness and high temperature ***,the poor conductivity of LaFeO3material restricts the discharge ability,which is problematic for its future widespread *** solve the above issue,in this study,we prepared C/Ni-coated LaFeO3composite in view of the excellent electrical conductivity of carbon and nickel *** show that the C/Ni-coated LaFeO3composite delivers remarkably increased discharge capacity of ～345 mAh g-1at 60℃ in contrast to ～267 mAh g-1for pure ***,the carbon and nickel not only increase the electrical conductivity of the LaFeO3but also reduces the agglomeration of the LaFeO3,therefore,the C/Ni-coated LaFeO3composite serves superior long cycle-life,which maintains 60.9% after 100 cycles（52.9% for the LaFeO3sample）.In overall,the electrochemical behavior of the C/Ni-coated LaFeO3composite confirms its high potential as nickel/metal hydride batteries for energy storage applications.

关键词： Energy storage Perovskite-type oxide Nickel metal hydride batteries LaFeO3 Electrochemical performance

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Controllable preparation of red phosphorus nanoribbons for enhanced photocatalytic degradation of Methyl Orange and Tetracycline

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environmental science and Pollution Research 2024年第42期31卷 55035-55045页

作者： Zhu, Jingyu Lv, Wuhua Wang, Chi Li, Kai Mei, Yi Faculty of Chemical Engineering Kunming University of Science and Technology Kunming650500 China Yunnan Province Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials Kunming650500 China The Higher Educational Key Laboratory for Phosphorus Chemical Engineering of Yunnan Province Kunming650500 China Faculty of Environmental Science Engineering Kunming University of Science and Technology Kunming650500 China

Nanoribbons (NRs), leveraging the flexibility of one-dimensional materials and the expansive surface area of two-dimensional materials, offer heightened exposure to edge sites and superior charge transfer rates. Consequently, they present promising prospects within the domain of photocatalysis. Crystalline red phosphorus (cRP), dcharacterized by its layered and fibrous structure, lends itself readily to the production of nanoribbons. Our study demonstrates a robust method for achieving high-yield, high-quality cRP by concurrently introducing mineralizing agent I2 and Si wafers into the Chemical Vapor Transport (CVT) synthesis process. Through ultrasound assistance, we transformed high-quality cRP into crystalline red phosphorus nanoribbons (cRP NRs) with an average thickness ranging from 7.5 to 17.5 nm and an average width between 75 and 175 nm. cRP NRs (I2 and Si) showcased impressive degradation capabilities towards Methyl Orange (MO) and Tetracycline (TC), achieving a remarkable 99% degradation of MO within 18 min under the simulated visible-light irradiation. The reactive species capturing experiments confirmed that ·O2− was the primary active agent responsible for the photocatalytic degradation of MO. Graphical Abstract: (Figure presented.) © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Silicon wafers

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