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Synergistic promotion of particulate matter reduction and production performance via adjusting electrochemical reactions in the zinc electrolysis industry

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Frontiers of Environmental Science & Engineering 2024年第1期18卷 23-33页

作者： Zizhen ma Jingkun Jiang Lei Duan Jianguo Deng Fuyuan Xu Zehui Li Linhua Jiang Ning Duan School of Environmental and Municipal Engineering Qingdao University of TechnologyQingdao 266520China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of the EnvironmentTsinghua UniversityBeijing 100084China State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China School of Physics Peking UniversityBeijing 100871China

heavy particulate matter (PM) pollution and high energy consumption are the bottlenecks of hydrometallurgy, especially in the electrolysis process. Therefore, an urgent need is to explore PM reduction methods with production performance co-benefits. This study presents three PM reduction methods based on controlling operating parameters, i.e., lowering electrolyte temperature, h2SO4 concentration, and current density of the cathode. The optimized conditions were also investigated using the response surface methodology to balance the PM reduction effect and Zn production. The results showed that lowering electrolyte temperature is the most efficient, with an 89.0% reduction in the PM generation flux (GFPM). Reducing h2SO4 concentration led to the minimum side effects on the current efficiency of Zn deposition (CEZn) or power consumption (PC). With the premise of non-deteriorating CEZn and PC, GFPM can be reduced by 86.3% at the optimal condition (electrolyte temperature = 295 K, h2SO4 = 110 g/L, current density = 373 A/m^(2)). In addition, the reduction mechanism was elucidated by comprehensively analyzing bubble characteristics, electrochemical reactions, and surface tension. Results showed that lower electrolyte temperature inhibited the oxygen evolution reaction (OER) and compressed gas volume. Lower h2SO4 concentration inhibited the hydrogen evolution reaction (hER) and reduced electrolyte surface tension. Lower current density inhibited both OER and hER by decreasing the reaction current. The inhibited gas evolutions reduced the microbubbles’ number and size, thereby reducing GFPM. These results may provide energy-efficient PM reduction methods and theoretical hints of exploring cleaner PM reduction approaches for industrial electrolysis.

关键词： Zinc electrolysis Particulate matter Energy consumption Operating parameters Bubble characteristic Electrochemical reaction

Effects of pyraclostrobin on growth,oxidative stress,and gene expression in relation to stress and ATP-binding cassette transporters in Tetrahymena thermophila

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Journal of Oceanology and Limnology 2024年第1期42卷 150-162页

作者： Yang LIU Jiale ZhANG Peng XIAO Xin LIU Yisifu ma Jing ZhANG Bangjun ZhANG henan International Joint Laboratory of Aquatic Ecotoxicology and health Protection Xinxiang 453007China College of Life Sciences Henan Normal UniversityXinxiang 453007China Journal of henan Normal University Xinxiang 453007China College of Life and Environmental Science Wenzhou UniversityWenzhou 325035China Department of Ecosystem Studies School of Environmental ScienceUniversity of Shiga PrefectureShiga 522-8533Japan

Pyraclostrobin(PYR),a widely used fungicide,has negative effects on fish and algae,but its toxicity in protozoa remains *** this study,the effects of PYR on the growth,oxidative stress,and gene expression related to stress and ATP-binding cassette(ABC)transporters in Tetrahymena thermophila were *** result showed that the 96-h IC_(50)of PYR against *** was 17.2 mg/***,PYR inhibited the growth of *** in concentration-or time-dependent manner.A morphological study revealed that the shape and size of *** changed,and damage of cell membrane surface was observed by scanning electron microscopy after 96 h of PYR *** activities of superoxide dismutase(SOD)and catalase(CAT)increased throughout the *** contrast,the glutathione(GSh)content was increased at 24 h and 48 h of exposure and decreased at 96 ***,a significant increase in malondialdehyde(MDA)level was observed in *** after96 h of ***,PYR upregulated the hSP703,hSP705,GPx2,and ABAC15 gene expression in the 0.1–5-mg/L groups and downregulated the hSP704,hSP90,TGR,and ABCC52 mRNA levels at 96 h of *** results suggest that PYR may exert adverse effects on *** by inducing oxidative stress and changing the gene expression related to ABC transporters and stress,which may enrich the understanding of the toxicity mechanism of PYR in aquatic organisms and provide reference data for aquatic ecological risk assessments.

关键词： pyraclostrobin Tetrahymena thermophila growth oxidative stress gene expression

A Transcriptome Analysis of Neural Tissue of Litopenaeus vannamei After Acute Exposure to Alexandrium pacificum

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Journal of Ocean University of China 2024年第2期23卷 529-538页

作者： YANG huijie hUANG Xianghu ma Yukun hU Zhangxi ZhANG Ning LI Changling ZhANG Yulei Department of Aquaculture College of FisheriesGuangdong Ocean UniversityZhanjiang 524088China Guangdong Laboratory of marine Ecology Environment Monitoring and Warning Zhanjiang 524088China

Alexandrium pacificum(***)is a typical paralytic shellfish poisonous *** algal blooms(hABs)caused by this species can bring serious environmental problems and economic losses to the aquaculture *** this study,transcriptome sequencing and analyses were performed on the neural tissue of Litopenaeus vannamei(***)after acute exposure to *** disrupted solution for 72 h,and differentially expressed genes(DEGs)were *** results showed that,compared with the control samples,300 DEGs were identified in the experimental group,of which 194 were up-regulated,and 106 *** gene ontology(GO)functional enrichment analysis showed that DEGs were significantly enriched in the cortical cytoskeleton organization,troponin complex,amylo-alpha-1,6-glucosidase and thymidine *** encyclopedia of genes and genomes(KEGG)enrichment analysis found that DEGs were mainly enriched in the oxidative phosphorylation process,intercellular tight junctions and *** results showed that the proteoglycans,signaling pathways,and various metabolic processes that regulate cell proliferation,differentiation,and apoptosis all played an essential role in the response of *** to *** toxins.

关键词： Litopenaeus vannamei Alexandrium pacificum paralytic shellfish poisoning transcriptome nerve

BnaWRKY75 positively regulates the resistance against Sclerotinia sclerotiorum in ornamental Brassica napus

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horticultural Plant Journal 2024年第3期10卷 784-796页

作者： Kexin Yu Yijie Zhang Xiaoyuan Fei Luyue ma Rehman Sarwar Xiaoli Tan Zheng Wang School of Life Sciences Jiangsu UniversityZhenjiangJiangsu 212013China School of Food and Biological Engineering Jiangsu University ZhenjiangJiangsu 212013China Key Laboratory for Theory and Technology of Intelligent Agricultural machinery and Equipment Jiangsu UniversityZhenjiangJiangsu 212013China

With the development of tourism at home and abroad,Rapeseed(Brassica napus)has become an important ornamental ***,its ornamental value at the inflorescence stage is greatly reduced by Sclerotinia *** of important genes in the defense responses is critical for molecular breeding,which is an important strategy for controlling the *** this study,we isolated a *** WRKY transcription factor gene,***75 was found to encode a nucleus-localized protein and exhibited relatively high expression in the *** thaliana transgenic plants expressing BnaWRKY75 showed enhanced resistance to ***,and both ProBnaWRKY75:GUS and gene expression analyses showed that BnaWRKY75 was highly responsive to *** infection,indicating the involvement of BnaWRKY75 in response to this ***,overexpression(OE)of BnaWRKY75 in *** significantly enhanced the resistance to ***,whereas the resistance was reduced in RNAi transgenic *** ***,the BnaWRKY75-OE *** plants exhibited constitutive activation of salicylic acid-,jasmonic acid-,and ethylene-mediated defense responses and the inhibition of both h_(2)O_(2)and O_(2)·^(-)accumulation in response to this *** contrast,BnaWRKY75-RNAi plants showed a reverse pattern,suggesting that BnaWRKY75 is involved in hormonal signaling pathways and in the control of reactive oxygen species *** conclusion,these data indicate that BnaWRKY75,a regulator of multiple defense responses,positively regulates resistance against ***,which may guide the improvement of resistance in rapeseed.

关键词： Brassica napus BnaWRKY75 Defense response Sclerotinia sclerotiorum

2.5μm-Thick Ultrastrong Asymmetric Separator for Stable Lithium Metal Batteries

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Energy & Environmental materials 2024年第6期7卷 106-117页

作者： Donghao Xie Zekun Wang Xin ma Yuchen Feng Xiaomin Tang Qiao Gu Yonghong Deng Ping Gao Advanced materials Thrust Interdisciplinary OfficeThe Hong Kong University of Science and TechnologyClear Water BayHong Kong999077 China Department of Chemical and Biological Engineering The Hong Kong University of Science and TechnologyClear Water BayHong Kong 999077China Advanced materials Thrust Function HubThe Hong Kong University of Science and Technology(Guangzhou)Nansha DistrictGuangzhou 511453China Department of materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China

Lithium metal batteries(LMBs)are considered the ideal choice for high volumetric energy density lithium-ion batteries,but uncontrolled lithium deposition poses a significant challenge to the stability of such *** this paper,we introduce a 2.5μm-thick asymmetric and ultrastrong separator,which can induce tissue-like lithium *** asymmetric separator,denoted by utPE@Cu_(2)O,was prepared by selective synthesis of Cu_(2)O nanoparticles on one of the outer surfaces of a nanofibrous(diameter~10 nm)ultrastrong ultrahigh molecular weight polyethylene(UhMWPE)*** analysis shows that the lithium deposits have tissue-like morphology,resulting in the symmetric lithium cells assembled using utPE@Cu_(2)O with symmetric Cu_(2)O coating exhibiting stable performance for over 2000 h of *** work demonstrates the feasibility of a facile approach ultrathin separators for the deployment of lithium metal batteries,providing a pathway towards enhanced battery performance and safety.

关键词： in situ SEI lithium deposition regulation separator ultrastrong ultrathin

Anchoring Ru clusters to highly defective N-doped carbon nanotubes via a thermal-shock strategy for stable industrial hydrogen evolution

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Nano Research 2024年第6期17卷 5261-5269页

作者： Zhiming Li Xinyu Li haiqing ma Chenliang Ye hongan Yu Long Nie Meng Zheng Jin Wang College of materials Science and Engineering Shenzhen UniversityShenzhen 518060China School of Chemistry and materials Science Anhui Normal UniversityWuhu 241002China Department of Power Engineering North China Electric Power UniversityBaoding 071003China

Non-Pt or low-Pt catalysts capable for stable generation of hydrogen via water electrolysis at an industrial level of current density are highly *** of strong metal-support connection is beneficial to improve the performance stability of *** we employed highly defective N-doped carbon nanotubes(d-N-CNT)as the support to achieve uniform and firm anchoring of Ru clusters(~1.9 nm)via a thermal-shock *** as-prepared Ru/d-N-CNT catalyst shows excellent catalytic activity for hydrogen evolution reaction(hER)in alkaline media and requires an overpotential(ƞ)of 12 mV at 10 ma·cm^(−2)and 116 mV at 200 ma·cm^(−2)with a Ru loading of 0.025 mg·cm^(−2).Impressively,Ru/d-N-CNT presents robust stability for hER at both low current density(stable for at least 1000 h at 10 ma·cm^(−2))and the industrial level of current density(stable for at least 100 h at 1000 ma·cm^(−2)),remarkably outperforming commercial Pt/C and Ru/*** highly defective nature of the N-CNT support endowed the as-prepared Ru/d-N-CNT catalyst with strong metal-support adhesion that efficiently suppressed agglomeration as well as obscission of Ru ***,the rich defects increased the surface energy of the N-CNT support and resulted in improved hydrophilicity as evidenced by the liquid contact angle measurement and the bubble evolution process,which also played an important role in stabilizing the hER performance especially at large current density.

关键词： thermal-shock method hydrogen evolution reaction large-current-density Ru cluster

Biomass-derived porous carbon with single-atomic cobalt toward high-performance aqueous zinc-sulfur batteries at room temperature

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Journal of Energy Chemistry 2024年第8期95卷 325-335,I0008页

作者： Shenfei Zhao Xiaoshuai Wu Jiliang Zhang Chunjie Li Zixiang Cui Weihua hu Ruguang ma Changming Li Institute for Clean Energy&Advanced materials School of Materials&EnergySouthwest UniversityChongqing 400715China Institute for materials Science and Devices School of Materials Science and EngineeringSuzhou University of Science and TechnologySuzhou 215009JiangsuChina School of materials Science and Engineering Dalian Jiaotong UniversityDalian 116028LiaoningChina

Aqueous zinc-sulfur batteries at room temperature hold great potential for next-generation energy storage technology due to their low cost,safety and high energy ***,slow reaction kinetics and high activation energy at the sulfur cathode pose great challenges for the practical ***,biomass-derived carbon with single-atomic cobalt sites(MMPC-Co)is synthesized as the cathode in Zn-S *** catalysis of single-atom Co sites greatly promotes the transform of cathode electrolyte interface(CEI)on the cathode surface,while offering accelerated charge transfer rate for high conversion reversibility and large electrochemical surface area(ECSA)for high electrocatalytic ***,the rich pore structure not only physically limits sulfur loss,but also accelerates the transport of zinc *** addition,the large pore volume of MMPC-Co is able to relieve the stress effect caused by the volume expansion of Zn S during charge/discharge cycles,thereby maintaining the stability of electrode ***,the sulfur cathode maintains a high specific capacity of 729.96 m A h g^(-1)after 500 cycles at4 A g^(-1),which is much better than most cathode materials reported in the *** work provides new insights into the design and development of room-temperature aqueous Zn-S batteries.

关键词： Biomass-derived carbon Single-atom catalysts Rich pore structure Sulfur cathode Aqueous zinc-sulfur batteries

Synthesis of tetrahedrally coordinated CoO for higher alcohol synthesis directly from syngas

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Frontiers of Chemical Science and Engineering 2024年第8期18卷 99-109页

作者： Zhuoshi Li han Yang Xiaofeng Pei Jiahui Li Jing Lv Shouying huang Yue Wang Xinbin ma Key Laboratory for Green Chemical Technology of Ministry of Education Collaborative Innovation Center of Chemical Science and EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China

higher alcohol synthesis directly from syngas is highly desirable as one of the efficient non-petroleum energy conversion ***0–Co^(O)catalysts showed great potential for this reaction,but the alcohol selectivity still needs to be improved and the crystal structure effect of Co^(O)on catalytic behaviors lacks ***,a series of tetrahedrally coordinated Co^(O)polymorphs were prepared by a thermal decomposition method,which consisted of wurtzite CoO and zinc blende CoO with varied *** diluting with SiO_(2),the catalyst showed excellent performance for higher alcohol synthesis with ROh selectivity of 45.8%and higher alcohol distribution of 84.1 wt%under the CO conversion of 38.0%.With increasing the content of wurtzite CoO,the Co^(0)/Co^(2+)ratio gradually increased in the spent catalysts,while the proportion of highly active hexagonal close packed cobalt in Co^(0)decreased,leading to first decreased then increased CO ***,the higher content of zinc blende CoO in fresh catalyst facilitated the retention of more Co^(2+)sites in spent catalysts,promoting the ROh selectivity but slightly decreasing the distribution of higher *** catalyst with 40%wurtzite CoO obtained the optimal performance with a space time yield toward higher alcohols of 7.9 mmol·gcat^(-1)·h^(-1).

关键词： higher alcohol synthesis CO hydrogenation wurtzite CoO zinc blende CoO hexagonal-closest-packed Co

TiO_(2)@C catalyzed hydrogen storage performance of Mg-Ni-Y alloy with LPSO and ternary eutectic structure

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Journal of magnesium and Alloys 2024年第2期12卷 767-778页

作者： Wenjie Song Wenhao ma Shuai he Wei Chen Jianghua Shen Dalin Sun Qiuming Wei Xuebin Yu College of Mechanical and Electrical Engineering Shaanxi University of Science and TechnologyXi’anShaanxi 710021China Department of materials Science Fudan UniversityShanghai 200438China School of Aeronautics Northwestern Polytechnical UniversityXi’anShaanxi 710072China Department of Mechanical Engineering&Engineering Science the University of North Carolina at CharlotteCharlotteNorth Carolina 28223United States of America

A designed Mg_(88.7)Ni_(6.3)Y_(5)hydrogen storage alloy containing 14h type LPSO(long-period stacking ordered)and ternary eutectic structure was prepared by regulating the alloy composition and *** hydrogen storage performance of the alloy was improved by adding nano-flower-like TiO_(2)@C *** decomposition of the LPSO structure during hydrogenation led to the formation of plenty of nanocrystals which provided abundant interphase boundaries and activation *** nanoscale TiO_(2)@C catalyst was uniformly dispersed on the surface of alloy particles,and the"hydrogen overflow''effect of TiO_(2)@C accelerated the dissociation and diffusion of hydrogen on the surface of the alloy *** a result,the in-situ endogenous nanocrystals of the LPSO structure decomposition and the externally added flower-like TiO_(2)@C catalyst uniformly dispersed on the surface of the nanoparticles played a synergistic catalytic role in improving the hydrogen storage performance of the Mg-based *** the addition of the TiO_(2)@C catalyst,the beginning hydrogen desorption temperature was reduced to 200℃.Furthermore,the saturated hydrogen absorption capacity of the sample was 5.32 wt.%,and it reached 4.25 wt.%h_(2) in 1 min at 200℃and 30 bar.

关键词： hydrogen storage Mg LPSO TiO_(2)@C Synergistic catalysis