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In situ observation of the electrochemical behavior of Li–CO_(2)/O_(2)batteries in an environmental transmission electron microscope

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Carbon Energy 2024年第4期6卷 244-255页

作者： Peng Jia Yunna Guo Dongliang Chen Jingming Yao Xuedong Zhang Jianguo Lu Yuqing Qiao Liqiang Zhang Hebei Key Laboratory of Applied Chemistry College of Environmental and Chemical EngineeringYanshan UniversityQinhuangdaoChina State Key Laboratory of Metastable Materials Science and Technology Clean Nano Energy CenterYanshan UniversityQinhuangdaoChina State Key Laboratory of Silicon and Advanced Semiconductor Materials School of Materials Science and EngineeringZhejiang UniversityHangzhouChina Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education School of Materials Science and EngineeringXiangtan UniversityXiangtanChina

Li–CO_(2)/O_(2)batteries,a promising energy storage technology,not only provide ultrahigh discharge capacity but also capture CO_(2)and turn it into renewable *** electrochemical reaction pathways'ambiguity,however,creates a hurdle for their practical *** study used copper selenide(CuSe)nanosheets as the air cathode medium in an environmental transmission electron microscope to in situ study Li–CO_(2)/O_(2)(mix CO_(2)as well as O_(2)at a volume ratio of 1:1)and Li–O_(2)batteries as well as Li–CO_(2)*** discharge reactions take place successively in the Li–CO_(2)/O_(2)–CuSe nanobattery:(I)4Li^(+)+O_(2)+4e^(−)→2Li_(2)O;(II)Li_(2)O+CO_(2)→Li_(2)CO_(3).The charge reaction proceeded via(III)2Li_(2)CO_(3)→4Li^(+)+2CO_(2)+O_(2)+4e^(−).However,Li–O_(2)and Li–CO_(2)nanobatteries showed poor cycling stability,suggesting the difficulty in the direct decomposition of the discharge *** fluctuations of the Li–CO_(2)/O_(2)battery's electrochemistry were also shown to depend heavily on O_(2).The CuSe‐based Li–CO_(2)/O_(2)battery showed exceptional electrochemical *** Li^–CO_(2)/O_(2)battery offered a discharge capacity apex of 15,492 mAh g^(−1) and stable cycling 60 times at 100 mA g^(−1).Our research offers crucial insight into the electrochemical behavior of Li–CO_(2)/O_(2),Li–O_(2),and Li–CO_(2)nanobatteries,which may help the creation of high‐performance Li–CO_(2)/O_(2)batteries for energy storage applications.

关键词： CuSe nanosheets electrochemical reaction in situ environmental transmission electron microscopy Li-CO_(2)battery Li-CO_(2)/O_(2)battery Li-O_(2)battery

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Electrodeposited 3D hierarchical NiFe microflowers assembled from nanosheets robust for the selective electrooxidation of furfuryl alcohol

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Green Energy & Environment 2023年第3期8卷 874-882页

作者： Biying Liu Man Zhang Yaoyu Liu Yuchen Wang Kai Yan Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology School of Environmental Science and EngineeringSun Yat-sen University135 Xingang Xi RoadGuangzhou510275China

A robust and green strategy for the selective upgrading of biomass-derived platform chemicals towards highly valuable products is important for the sustainable ***,the efficient electrocatalytic oxidation of biomass-derived furfuryl alcohol(FFA)into furoic acid(FurAc)catalyzed by the electrodeposited non-precious NiFe microflowers was successfully reached under the low temperature and ambient *** 3D hierarchical NiFe microflowers assembled from ultrathin nanosheets were controllably synthesized by the electrodeposition method and uniformly grown on carbon fiber paper(CFP).Electrochemical analysis confirmed that NiFe nanosheets more preferred in the selective oxidation of FFA(FFAOR)than oxygen evolution reaction(OER).The linear sweep voltammetry(LSV)in FFAOR displayed a clear decrease towards lower potential,resulting in 30 mV reduction of overpotential at 20 mA cm^(-2) compared with that of *** optimal catalyst Ni_(1)Fe_(2) nanosheets exhibited the highest selectivity of FurAc(94.0%)and 81.4%conversion of FFA within 3 ***,the influence of various reaction parameters on FFAOR was then explored in *** that,the reaction pathway was investigated and rationally *** outstanding performance for FFAOR can be ascribed to the unique structure of 3D flower-like NiFe nanosheets and oxygen vacancies,resulting in large exposure of active sites,faster electron transfer and enhanced adsorption of *** findings highlight a facile and convenient mean with a promising green future,which is promising for processing of various biomass-derived platform chemicals into value-added products.

关键词： Electrodeposition Microflowers assembled by nanosheets NiOOH Oxygen vacancies Electrochemical oxidation Furfuryl alcohol Furoic acid

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Stretchable artificial vision sensor with retinomorphic transistorreservoir computing

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Nano Research 2025年第3期18卷 486-493页

作者： Tongrui Sun Xu Liu Yutong Xu Xinglei Zhao Pu Guo Junyao Zhang Ziyi Guo Yue Wu Shilei Dai Jia Huang School of Materials Science and Engineering Tongji UniversityShanghai 201804China State Key Laboratory of Petroleum Pollution Control BeijingCNPC Research Institute of Safety and Environmental TechnologyBeijing 102206China

Artificial visual sensors(AVSs)with bio-inspired sensing and neuromorphic signal processing are essential for next-generation intelligent *** optoelectronic devices employed in AVSs operate discretely in terms of sensing,processing,and memorization,and not ideal for applications necessitating shape deformation to achieve wide fields-of-view and deep ***,we present stretchable artificial visual sensors(S-AVS)capable of concurrently sensing and processing optical signals while adapting to shape ***,these S-AVSs use a stretchable transistor structure with a meticulously engineered photosensitive semiconductor layer,comprising an organic semiconductor,thermoplastic elastomer,and cesium lead bromide quantum dots(CsPbBr_(3) QDs).They exhibit synaptic behaviors such as excitatory postsynaptic current(EPSC)and paired-pulse facilitation(PPF)under optical signals,maintaining functionality under 30%strain and repeated *** nonlinear response and fading memory effect support in-sensor reservoir computing,achieving image recognition accuracies of 97.46%and 97.1%at 0%and 30%strain,respectively.

关键词： stretchable electronics artificial vision sensors(AVSs) retinomorphic transistors reservoir computing neuromorphic computing

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Lanthanum hydroxide showed best application potential in La-based materials based on its stable phosphate adsorption properties in complex water environments

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Journal of environmental sciences 2025年第6期152卷 465-476页

作者： Linjuan Zhu Yao Zhang Shuo Xu Baoyou Shi Haotian Hao Yili Wang College of Environmental Science and Engineering Beijing Key Lab for Source Control Technology of Water PollutionBeijing Forestry UniversityBeijing 100083China Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

Three lanthanum morphology materials encompassing all lanthanum composites were synthesized by the direct precipitation method,and their phosphate adsorption order was determined as La_(2)(CO_(3))_(3)>La(OH)_(3)>La_(2)O_(3).Further comparison of the adsorption performance between La_(2)(CO_(3))_(3) and La(OH)_(3) revealed that the former exhibited a twofold higher rate of adsorption compared to the *** presence of SO_(4)^(2−),HCO_(3)−,Mg^(2+),and HA in the water led to a decrease in the phosphate adsorption of La_(2)(CO_(3))_(3) and La(OH)_(3),while Ca^(2+)enhances the adsorption of phosphoric acid by both *** to La_(2)(CO_(3))_(3),La(OH)_(3) exhibited stronger resistance against coexisting *** pH was the limiting factor for phosphate adsorption in both cases,and their adsorption capacity decreased significantly as the pH *** phosphate adsorption mechanism of La_(2)(CO_(3))_(3) was ligand exchange to form inner-sphere complexes,while the phosphate adsorption mechanism of La(OH)_(3) involved ligand exchange,inner-sphere complexation,and electrostatic *** stability of La(OH)_(3) exhibited superior performance compared to that of La_(2)(CO_(3))_(3) over 5 adsorption-desorption *** La_(2)(CO_(3))_(3) had a higher initial phosphate adsorption capacity than La(OH)_(3),its phosphate adsorption capacity decreased by 40%after five adsorption-desorption cycles,while that of La(OH)_(3) decreased by 2.3%.Additionally,the amount of La(OH)_(3) adsorbed after five cycles was 25.6%higher than that of La_(2)(CO_(3))_(3).Therefore,La(OH)_(3) performs better regeneration adsorption than La_(2)(CO_(3))_(3).Furthermore,a smaller dosage of La(OH)_(3) was required compared to La_(2)(CO_(3))_(3) in a test aimed at lowering the actual phosphate concentration in water to 0.5 mg/*** summary,La(OH)_(3) is a more suitable substrate for cyclic adsorption for phosphorus removal than La_(2)(CO_(3))_(3) and has better potential for practi

关键词： Phosphate removal Adsorption La(OH)3 La2(CO_(3))3 Regeneration

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Electrochemistry and DFT study of galvanic interaction on the surface of monoclinic pyrrhotite(001)and galena(100)

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International Journal of Mining science and technology 2024年第8期34卷 1151-1162页

作者： Tingsheng Qiu Kaiwei Ding Huashan Yan Liu Yang Hao Wu Guanfei Zhao Xianhui Qiu College of Resource and Environmental Engineering Jiangxi University of Science and TechnologyGanzhou 341000China Jiangxi Provincial Key Laboratory of Low-Carbon Processing and Utilization of Strategic Metal Mineral Resources Ganzhou 341000China Jiangxi Environmental Engineering Vocational College Ganzhou 341000China

The electrochemical interaction between galena and monoclinic pyrrhotite was investigated to examine its impact on the physical and chemical properties of the mineral *** investigation employed techniques such as electrochemistry,metal ion stripping,X-ray photoelectron spectroscopy,and quantum *** electrochemical test results demonstrate that the galena surface in the electro-couple system exhibits a lower electrostatic potential and higher electrochemical activity compared to the monoclinic pyrrhotite surface,rendering it more susceptible to oxidation *** pyrrhotite significantly amplifies the corrosion rate of the galena *** charge population calculations indicate that electrons are consistently transferred from galena to monoclinic pyrrhotite,with the number of electron transfers on the mineral surface increasing as the interaction distance *** analysis of state density revealed a shift in the surface state density of galena towards lower energy levels,resulting in decreased reactivity and increased difficulty for the reagent to adsorb onto the mineral ***,monoclinic pyrrhotite exhibited an opposite *** X-ray photoelectron spectroscopy(XPS)test results indicate that galvanic interaction leads to the formation of hydrophilic substances,PbS_(x)O_(y) and Pb(OH)_(2),on the surface of ***,the surface of monoclinic pyrrhotite not only adsorbs Pb^(2+)but also undergoes S^(0) formation,thereby augmenting its hydrophobic nature.

关键词： Electrochemistry Galvanic interaction Monoclinic pyrrhotite Galena Density functional theory

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The exposure risks associated with pathogens and antibiotic resistance genes in bioaerosol from municipal landfill and surrounding area

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Journal of environmental sciences 2023年第7期129卷 90-103页

作者： Zhishu Liang Yun Yu Xiaolong Wang Wen Liao Guiying Li Taicheng An Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and HealthInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control Guangdong Key Laboratory of Environmental Catalysis and Health Risk ControlSchool of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China

Pathogenic microbes with antibiotic resistance can thrive on municipal solid waste as nutrients and be aerosolized and transported to vicinities during waste disposal ***,the characterization of pathogenic bioaerosols and assessment of their exposure risks are ***,particle size,concentration,activity,antibiotic resistance,and pathogenicity of airborne microorganisms were assessed in different sectors of a typical *** showed that active sector in downwind direction has the highest bioaerosol level(1234 CFU/m3),while residential area has the highest activity(14.82 mg/L).Botanical deodorizer from mist cannon can effectively remove *** bioaerosols can be inhaled into respiratory system till bronchi with sizes ranging from 2.1−3.3 and 3.3−4.7μ*** bacteria(Bacilli,Bacillus,and Burkholderia-Paraburkholderia)and allergenic fungi(Aspergillus,Cladosporium,and Curvularia)prevailed in *** high abundance of microbial volatile organic compounds(mVOCs)producing bioaerosols were detected,these mVOCs contributed little to odor issues in ***,surrounding areas have higher levels of antibiotic-resistance genes(ARGs)than inner landfill with tetC,acrB,acrF,mdtF,and bacA as dominant *** ARGs were significantly correlated with bacterial community,while environmental parameters mainly influenced fungal *** findings can assist in reducing and preventing respiratory allergy or infection risks in occupational environments relating to waste management.

关键词： Bioaerosol Pathogenic community mVOCs Antibiotic-resistance genes Health risk Botanical deodorizer

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Achieving robust nitritation in a modified continuous-flow reactor: From micro-granule cultivation to nitrite-oxidizing bacteria elimination

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Journal of environmental sciences 2023年第2期124卷 117-129页

作者： Wenru Liu Jiajun Song Jianfang Wang Xiaoming Ji Yaoliang Shen Dianhai Yang National&Local Joint Engineering Laboratory for Municipal Sewage Resource Utilization Technology Suzhou University of Science and TechnologySuzhou 215009China School of Environmental Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China College of Resources and Environmental Sciences Nanjing Agricultural UniversityNanjing 210095China State Key Laboratory of Pollution Control and Resources Reuse Tongji UniversityShanghai 200092China

In this study,a modified continuous-flow nitrifying reactor was successfully operated for rapid cultivation of micro-granules and achieving robust *** showed that sludge granulation with mean size of ca.100μm was achieved within three weeks by gradually increasing settling velocity-based selection pressure from 0.48 to 0.9 m/*** Nitrospira like nitrite-oxidizing bacteria(NOB)were enriched in the micro-granules with a ratio between ammonia-oxidizing bacteria(AOB)and NOB of 5.7%/6.5% on day 21,fast nitritation was achieved within one-week by gradually increasing of influent ammonium concentration(from 50 to 200 mg/L).Maintaining ammonium in-excess was the key for repressing NOB in the ***,when the influent ammonium concentration switched back to 50 mg/L still with the residual ammonium of 15–25 mg/L,the nitrite accumulation efficiency increased from 90%to 98%.Experimental results suggested that the NOB repression was intensified by both oxygen and nitrite unavailability in the inner layers of ***,continuous operation with ammonium in excess resulted in overproduction of extracellular polysaccharides and overgrowth of some bacteria(e.g.,Nitrosomonas,Arenimonas,and Flavobacterium),which deteriorated the micro-granule stability and drove the micro-granules aggregation into larger ones with irregular ***,efficient nitritation was stably maintained with extremely high ammonium oxidation potential(>50 mg/g VSS/hr)and nearly complete washout of NOB was *** suggested that smooth and spherical granule was not a prerequisite for achieving NOB wash-out and maintaining effective nitritation in the granular ***,the microgranules exhibited a great practical potential for high-rate nitritation.

关键词： Continuous flow Granulation Nitritation Nitrate-oxidizing bacteria repression

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HP-KPConv: Point Cloud Registration Evaluation via Local Feature Distribution Similarity

HP-KPConv: Point Cloud Registration Evaluation via Local Fea...

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2024 IEEE International Conference on Robotics and Biomimetics, ROBIO 2024

作者： Pan, Yaling He, Li Guan, Yisheng Zhang, Hong Chinese Electronic Product Reliability and Environmental Testing Research Institute Ministry of Industry and Information Technology Key Laboratory of Quality and Reliability Engineering Technology of Civil Aircraft and Aero-Engine Guangzhou510610 China Southern University of Science and Technology Department of Electronic and Electrical Engineering Shenzhen518055 China Guangzhou510006 China

ISBN: (纸本)9781665481090

ICP is one of the most popular solutions for point cloud registration. However, the evaluation metric of the ICP algorithm, based on point-wise Euclidean distances, falls short in meeting the demands of high-precision alignment. In this paper, we propose a point cloud registration evaluation method based on local feature distribution to assess alignment quality, in particular the translation errors among matched point clouds. Rather than comparing the point-to-point Euclidean distance as adopted in ICP, our main idea is that the spatial distribution of one local region pre- and post-alignment should be similar. We design a filter to calculate local region similarity and find out outliers according to the similarity. This high-precision filter is integrated into the KPConv network, denoted as HP-KPConv. Finally, after conducting extensive experiments on Dingo robots and LiDAR, we validate the ability of HP-KPConv to effectively detect subtle alignment errors, proving its applicability in robot localization evaluations. © 2024 IEEE.

关键词： Robots

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Ozonation of aromatic monomer compounds in water: factors determining reaction outcomes

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Frontiers of environmental science & engineering 2023年第5期17卷 13-25页

作者： Zhe Wang Wenjuan Zhang Zhiwei Wang Jing Chang School of Environmental Science and Safety Engineering Tianjin University of TechnologyTianjin 300384China School of Environmental and Municipal Engineering Tianjin Key Laboratory of Aquatic Science and TechnologyTianjin Chengjian UniversityTianjin 300384China Tianjin Municipal Engineering Design&Research Institute Co. Ltd.Tianjin 300384China

For aromatic monomer compounds (AMCs), ozonation outcomes were usually predicted by the substituents of the benzene ring based on the electron inductive effect. However, the predicted results were occasionally unreliable for complex substituents, and other factors caused concern. In this study, p-chloronitrobenzene (p-CNB) and ibuprofen (IBP) were selected for ozonation. According to the electron inductive theory, p-CNB should be less oxidizable, but the opposite was true. The higher rates of p-CNB were due to various sources of assistance. First, the hydroxyl radical (•OH) contributed 90 % to p-CNB removal at pH 7.0, while its contribution to IBP removal was 50 %. Other contributions came from molecular O3 oxidation. Second, p-CNB achieved 40 % of the total organic carbon (TOC) removal and fewer by-product types and quantities, when compared to the results for IBP. Third, the oxidation of p-CNB started with hydroxyl substitution reactions on the benzene ring;then, the ring opened. However, IBP was initially oxidized mainly on the butane branched chain, with a chain-shortening process occurring before the ring opened. Finally, the degradation pathway of p-CNB was single and consumed fewer oxidants. However, both branches of IBP were attacked simultaneously, and three degradation pathways that relied on more oxidants were proposed. All of these factors were determinants of the rapid removal of p-CNB.

关键词： Ozonation Aromatic compound Oxidizing specie By-product Initial reaction position Degradation pathway

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Improving the sensitivity of diamond NV center ensemble magnetometer based on microsphere

Improving the sensitivity of diamond NV center ensemble magn...

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2024 International Conference on Optical and Photonic engineering, icOPEN 2024

作者： Zhou, Yangyang Tang, Jiong Ma, Bingxu Qiu, Jian Science and Technology on Reliability Physics and Application of Electronic Component Laboratory China Electronic Produce Reliability and Environmental Testing Research Institute Guangzhou Guangdong510610 China School of Electronic and Information Engineering South China Normal University Foshan Guangdong528225 China

ISBN: (数字)9781510688117

ISBN: (纸本)9781510688100

Diamond nitrogen-vacancy (NV) center ensemble magnetometer is a novel solid quantum magnetometer with high sensitivity and high spatial resolution, which can be used at normal temperature and pressure. However, the low fluorescence collection efficiency of the magnetometer in confocal optical system hinders further improvement in sensitivity. To solve the problem, based on silica microspheres, we propose a method to enhance the excitation and collection efficiency of NV center ensemble in massive diamond. Experimental results show, compared with the NV diamond magnetometer without microspheres, the photon collection efficiency of NV diamond magnetometer coated with a layer of microspheres is increased by 110%. Thus, the sensitivity of the NV center magnetometer is increased by 4 times to 5.3μT/√Hz. © 2025 SPIE.

关键词： Microspheres

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