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Micro-nano Na3V2(PO4)3/c derived from metal-organic frameworks for high performance sodium ion batteries

JOURNAL OF ALLOYS AND cOMPOUNDS 2023年 932卷

作者： chen, Hongxia Yang, Yutian Nie, Rihuang Li, cheng Xu, Shuangwu Zhou, Mengcheng Zhang, Xinyu Zhou, Hongming Cent South Univ Sch Mat Sci & Engn Changsha 410083 Hunan Peoples R China

Na3V2(PO4)3 has been widely studied due to its stable three-dimensional transmission channel structure as a cathode electrode of sodium ion batteries, but its micro particle size and low intrinsic electronic con-ductivity limit its further development. Therefore, hierarchical porous micro-nano NVP/c materials were successfully prepared using a metal-organic frameworks (MOFs) precursor. Because of the unique hier-archical porous micro-nano structure, 3D highly conductive network between surface and particles, and high specific surface area, M-NVP/c exhibits outstanding rate capability (95.0 mAh g-1 at a current density of 10 c) and extraordinary stable cycle life (the capacity decays from 111.2 mAh g-1 to 108.8 mAh g-1 after 500 cycles at 1 c, with a capacity retention rate of 97.8 %). This method provides a promising pathway for the application of MOFs in battery materials and promotes the development of SIBs in large-scale energy storage systems.(c) 2022 Elsevier B.V. All rights reserved.

关键词： Sodium ion batteries c MOFs carbon coating Hierarchical porous structure

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Promoted aerobic denitrification through denitrifying fungal communities: co-occurrence patterns and treatment of low c/N micro-polluted water

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ScIENcE OF THE TOTAL ENVIRONMENT 2023年第1期884卷 163859页

作者： Ma, Ben Niu, Limin Li, Nan Pan, Sixuan Li, Anyi chu, Mengting Liu, Huan Kosolapov, Dmitry B. Xin, Xiaying Zhi, Wei Hou, Liyuan chen, Zhongbing Zhang, Yinbin cao, Shumiao Huang, Tinglin Zhang, Haihan Xian Univ Architecture & Tech nol Shaanxi Key Lab Environm Engn Key Lab Northwest Water Resource Environm & Ecol Xian 710055 Peoples R China Xian Univ Architecture & Technol Sch Environm & Municipal Engn Xian 710055 Peoples R China Russian Acad Sci IBIW RAS Papanin Inst Biol Inland Waters 109 Borok Nekouz 152742 Yaroslavl Russia Queens Univ Dept Civil Engn Kingston ON K7L 3N6 Canada Penn State Univ Dept Civil & Environm Engn State Coll PA USA Utah State Univ Civil & Environm Engn Dept Logan UT 84322 USA Czech Univ Life Sci Prague Fac Environm Sci Dept Appl Ecol Kamycka 129 Praha Suchdo 16500 Czech Republic Xi An Jiao Tong Univ Dept Oncol Affiliated Hosp 2 Xian 710004 Peoples R China

Despite the growing interest in using mixed-culture aerobic denitrifying fungal flora (mixed-cADFF) for water remediation, there is limited research on their nitrogen removal performance in low c/N polluted water bodies. To address this knowledge gap, we isolated three mixed-cADFFs from overlying water in urban lakes to evaluate their removal performance. The total nitrogen (TN) removal efficiencies were 93.60 degrees Ao, 94.64 degrees Ao, and 95.18 degrees Ao, while the dissolved organic carbon removal efficiencies were 96.64 degrees Ao, 95.12 degrees Ao, and 96.70 degrees Ao for mixed-cADFF LN3, LN7, and LN15, respectively in the denitrification medium under aerobic conditions at 48 h cultivation. The three mixed-cADFFs could utilize diverse types of low molecular weight carbon sources to drive the aerobic denitrification processes efficiently. The optimal c/N ratio for the mixed-cADFFs were c/N = 10, and then c/N = 15, 7, 5, and 2. The high-throughput sequencing analysis of three mixed-cADFFs indicated that Eurotiomycetes, cystobasidiomycetes, and Sordariomycetes were the dominant class in the communities at class level. The network analysis showed that the rare fungal species, such as Scedosporium dehoogii Saitozyma, and candida intermedia presented positively cooccurred with the TN removal and organic matter reduction capacity. Immobilization mixed-cADFFs treatment raw water experiments indicated that three mixed-cADFFs could reduce nearly 62.73 % of TN in the low c/N micropolluted raw water treatment. Moreover, the cell density and cell metabolism indexes were also increased during the raw water treatment. This study will provides new insight into resource utilization of the mixed-culture aerobic denitrifying fungal community in field of environment restoration.

关键词： Mixed-culture aerobic denitrifying fungal flora Aerobic denitrification c N Micro-polluted water bodies cell metabolism

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Preparation and photocatalytic performance of c/N co-doped rich-defect tio2 by dielectric barrier discharge plasma

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JOURNAL OF MOLEcULAR STRUcTURE 2023年 1284卷

作者： Yu, Bo Zhang, Lianhong Zhang, Guoping Southwest Petr Univ Sch Chem & Chem Engn Chengdu 610500 Sichuan Peoples R China

In this paper, c/N co-doped rich-defect TiO2 photocatalyst (c/N/DBD-TiO2-x) was prepared by DBD plasma discharge treatment in the mixed atmosphere of cO, N2 and H2 for the first time. The oxygen defects, c doping and N doping were successfully introduced by DBD plasma discharge treatment. With the synergy of these three, the forbidden band width was reduced from 3.20 eV to 2.78 eV, and the electron hole pair was rapidly separated and transferred. Meanwhile DBD plasma discharge treatment increased the specific surface area, pore volume and pore size of TiO2. Evaluation results of visible light catalytic performance showed that the degradation rate of MB solution could reach 98.05%. The new plasma discharge method solved the shortcomings and deficiencies of traditional modification methods, which provided a new and more convenient technology for TiO2 modification.(c) 2023 Elsevier B.V. All rights reserved.

关键词： Titanium dioxide Photocatalysis DBD plasma c N co-doping Oxygen defect

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In-situ growth of carbon nanotubes for improving the performance of co-N/ c in membrane fuel cell

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cHEMIcAL ENGINEERING JOURNAL 2023年第1期461卷

作者： Qua, Xi-Ming Yin, Shu-Hu Yana, Ya-Ni Yang, Jian Li, Yan-Rong cheng, Xiao-Yang Lu, Fa Wang, chong-Tai Jiang, Yan-Xia Sun, Shi-Gang Xiamen Univ Coll Chem & Chem Engn Dept Chem State Key Lab Phys Chem Solid Surfaces Xiamen Peoples R China Discipline Intelligent Instrument & Equipment Xiamen 361005 Peoples R China Hainan Normal Univ Coll Chem & Chem Engn Key Lab Electrochem Energy Storage & Energy Conver Haikou 571158 Peoples R China

cobalt-nitrogen/carbon (co-N/c) was considered as the promising catalyst for oxygen reduction reaction (ORR). The combination of dense single-atom active site density and serviceable proton electronic conductivity is the key to improve the activity and stability of the catalyst in proton exchange membrane fuel cells. Herein, we achieved the in-situ growth of massive carbon nanotubes (cNTs) during the synthesis of co-N/c catalysts by precisely regulating the ratio of reactants in the metal-organic framework precursors. Notably, the dense deformed co-N4 sites were anchored on the in-situ grown cNTs, improving the triple-phase boundary and proton electronic conductivity of membrane electrode assemblies (MEA). Benefiting from the unique structure of dense co-N4 sites anchored on cNTs, the target catalyst co-N/c-1/4.4 exhibited high activity in both ORR (half-wave potential: 0.781 V, kinetic current@0.80 V = 2.25 mA cm-2) and fuel cell (H2-Air: 0.49 W cm-2) tests. And the in-situ grown cNTs with high graphitization degree led to a significant improvement in the stability of the catalyst (10 mV decay of half-wave potential after 30,000 cycles). We believe this research may provide new understanding into the development of non-PGM electrocatalysts with high performance at the atomic scale.

关键词： In-situ growth co-N c cNT co-N4 Oxygen reduction

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Identification and characterization of colletotrichum brevisporum and c. truncatum causing papaya anthracnose in the Philippines

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JOURNAL OF PHYTOPATHOLOGY 2021年第11-12期169卷 692-700页

作者： Laurel, Nino R. Magdalita, Pablito M. Dela cueva, Fe M. Univ Philippines Los Banos Coll Agr & Food Sci Inst Plant Breeding Los Banos 4031 Philippines Univ Philippines Los Banos Coll Agr & Food Sci Inst Crop Sci Los Banos Philippines

Papaya (carica papaya L.) fruits showing typical anthracnose lesions were collected from Los Banos, Laguna, Philippines. Infected fruits showed brown to black, sunken water-soaked lesions with salmon- and black-coloured acervuli. Fungal pathogens were isolated from the fruit samples, plated on potato dextrose agar (PDA) and purified for subsequent analyses. A total of six colletotrichum isolates were subjected to morphological assessment and were divided into two morphotypes (I and II). Morphotype I produced conidia which were hyaline, fusiform with obtuse ends, while Morphotype II produced conidia which were hyaline, falcate with pointy ends. For phylogenetic analysis, sequence analysis of the internal transcribed spacer (ITS) region, glyceraldehyde-3-phosphate dehydrogenase (GAPDH), actin (AcT) and chitin synthase-1 (cHS-1) was performed and resulted in two well-supported and distinct clades. All test isolates were pathogenic in the detached fruit assay, and the same isolates were successfully re-isolated from the symptomatic fruit samples, thereby fulfilling Koch's postulate. The results of the phylogenetic analysis, morphological assessment and pathogenicity testing confirmed the identity of the isolates as c. brevisporum and c. truncatum. To our knowledge, this is the first confirmed report of the two new species associated with papaya anthracnose in the Philippines.

关键词： anthracnose c brevisporum c truncatum papaya phylogenetic analysis

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D-MoS2@rGO-Ti3c2Tx/GcE传感器的构建及其同步检测痕量cd（Ⅱ）和Pb（Ⅱ）研究

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有色金属科学与工程 2025年

作者：彭如花刘柏雄宋财华左富强何兴羽江西理工大学材料科学与工程学院三川智慧科技股份有限公司

随着工业化的高速发展，重金属污染带来的环境安全问题是全世界正在面临的挑战。电化学方法是一种具有操作简单、响应快速、高灵敏度的金属离子检测手段，加之其兼具仪器的便携性，可满足现场检测和实时数据分析，在重金属离子实时监测... 详细信息

随着工业化的高速发展，重金属污染带来的环境安全问题是全世界正在面临的挑战。电化学方法是一种具有操作简单、响应快速、高灵敏度的金属离子检测手段，加之其兼具仪器的便携性，可满足现场检测和实时数据分析，在重金属离子实时监测中展现出优越应用潜力。本实验通过一步水热法将D-MoS2，成功负载在rGO和Ti3c2Tx表面，构建D-MoS2@rGO-Ti3c2Tx/GcE电化学传感器，用于水体中重金属离子cd （II）和Pb （II）检测。检测结果表明，该传感器对cd （II）和Pb （II）在5～600 μg/L浓度范围内呈现出良好的线性关系，检测限（LOD）分别为1.35 μg/L和1.02 μg/L，cd （II）和Pb （II）共存状态下LOD分别1.63 μg/L和1.23 μg/L，并且具有良好的抗干扰性、重现性和稳定性。在自来水、湖水和河水的加标回收探究中，对cd （II）和Pb （II）的回收率范围分别为98.74%～105.33%和97.86%～105.04%，检测结果较为准确，表明该传感器对实际水样中的重金属离子检测具有一定的实际应用潜力。

关键词： D-MoS Ti c T 氧化石墨烯电化学传感器镉离子铅离子

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Inhibition of mTOR decreases insoluble proteins burden by reducing translation in c. elegans

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BIOGERONTOLOGY 2021年第1期22卷 101-118页

作者： Yee, Zhuangli Lim, Shaun Hsien Yang Ng, Li Fang Gruber, Jan Natl Univ Singapore Yong Loo Lin Sch Med Dept Biochem Singapore Singapore Yale NUS Coll Div Sci Aging Res Lab Singapore Singapore

Aging animals accumulate insoluble proteins as a consequence of a decline of proteostatic maintenance with age. In caenorhabditis elegans, for instance, levels of detergent-insoluble proteins increase with age. In longer-lived strains of c. elegans, this accumulation occurs more slowly, implying a link to lifespan determination. We further explored this link and found that detergent-insoluble proteins accumulate more rapidly at higher temperatures, a condition where lifespan is short. We employed a c. elegans strain carrying a GFP transcriptional reporter under the control of a heat shock (hsp-16.2) promoter to investigate the dynamics of proteostatic failure in individual nematodes. We found that early, sporadic activation of hsp-16.2 was predictive of shorter remaining lifespan in individual nematodes. Exposure to rapamycin, resulting in reduced mTOR signaling, delayed spurious expression, extended lifespan, and delayed accumulation of insoluble proteins, suggesting that targets downstream of the mTOR pathway regulate the accumulation of insoluble proteins. We specifically explored ribosomal S6 kinase (rsks-1) as one such candidate and found that RNAi against rsks-1 also resulted in less age-dependent accumulation of insoluble proteins and extended lifespan. Our results demonstrate that inhibition of protein translation via reduced mTOR signaling resulted in slower accumulation of insoluble proteins, delayed proteostatic crisis, and extended lifespan in c. elegans.

关键词： Aging Insoluble proteins Heat shock protein c elegans mTOR Proteostasis

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The impact of removing former drinkers from genome-wide association studies of AUDIT-c

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ADDIcTION 2021年第11期116卷 3044-3054页

作者： Dao, cecilia Zhou, Hang Small, Aeron Gordon, Kirsha S. Li, Boyang Kember, Rachel L. Ye, Yixuan Gelernter, Joel Xu, Ke Kranzler, Henry R. Zhao, Hongyu Justice, Amy c. Yale Univ Sch Publ Hlth New Haven CT USA Vet Affairs Connecticut Healthcare Syst West Haven CT USA Yale Univ Sch Med New Haven CT USA Univ Penn Perelman Sch Med Philadelphia PA 19104 USA Crescenz Vet Affairs Med Ctr Philadelphia PA USA

Background and aims The Alcohol Use Disorders Identification Test-consumption (AUDIT-c) questionnaire screens for harmful drinking using a 12-month timeframe. A score of 0 is assigned to individuals who report abstaining from alcohol in the past year. However, many middle-age individuals reporting current abstinence are former drinkers (FDs). Because FDs may be more genetically prone to harmful alcohol use than lifelong abstainers (LAs) and are often combined with LAs, we evaluated the impact of differentiating them on the identification of genetic association. Design and Setting The United Kingdom Biobank (UKBB) includes AUDIT-c and alcohol drinker status. Participants 131 510 Europeans, including 5135 FDs. Measurements We compared three genome-wide association (GWAS) analyses to explore the effects of removing FDs: the full AUDIT-c data, AUDIT-c data without FDs, and data from a random sample numerically matched to the data without FDs. Because prior studies show a consistent association of the ADH1B polymorphism rs1229984 with both alcohol consumption and alcohol use disorder, we compared allele frequencies for rs1229984 stratified by AUDIT-c value and FD versus LA status. Additionally, we calculated polygenic risk scores (PRS) of related diseases. Findings The rs1229984 allele frequencies among FDs were numerically comparable to those with high AUDIT-c scores and very different from those of LAs. Removing FDs from GWAS yielded a stronger association with rs1229984 (P value after removal: 1.9 x 10(-70) vs 1.7 x 10(-65) and 2.5 x 10(-62)), more statistically significant single nucleotide polymorphisms (SNPs) (after removal: 11 vs 9 and 8), and genomic loci (after removal: 11 vs 9 and 7). Additional independent SNPs were identified after removal of FDs: rs2817866 (PTGER3), rs7105867 (ANO3), and rs17601612 (DRD2). For PRS of alcohol use disorder and major depressive disorder, there are statistically significant differences between FDs and LAs. conclusions Differenti

关键词： Alcohol use disorder AUDIT‐ c former drinkers genome‐ wide association study polygenic risk score sick quitters

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Effect of carbon source and c/N ratio on microbial community and function in ex situ biofloc system with inoculation of nitrifiers and aerobic denitrifying bacteria

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AQUAcULTURE RESEARcH 2021年第9期52卷 4498-4511页

作者： Qiu, Ming Liao, Shaoan Wang, Bin Zeng, Jiaying Fang, Jinkun Wang, Anli Ye, Jianmin South China Normal Univ Coll Life Sci Guangzhou Peoples R China Key Lab Ecol & Environm Sci Guangdong Higher Educ Guangzhou Peoples R China Guangdong Prov Key Lab Hlth & Safe Aquaculture Guangzhou Peoples R China

To control the inorganic nitrogen and biofloc concentrations in the biofloc system, it is necessary to intensify the nitrogen removal by nitrification and denitrification. In this study, nitrifiers and aerobic denitrifying bacteria were inoculated into aquaculture wastewater, with 16.80 mg/L of nitrogen input per day after start-up, and by addition of glucose and citrate c/N to 9 and 12, without adding carbon source as control (c/N 6.17). The concentrations of inorganic nitrogen, total nitrogen and biofloc, and the diversity of the microbial community were investigated during the experimental period of 40 days. The results showed that 84.17-89.97% of nitrogen input was removed in all the treatments, residual nitrogen was higher in the glucose treatments. Lower inorganic nitrogen at a higher c/N ratio was obtained with the addition of the same carbon source due to more assimilation. Among all, the citrate treatment at c/N 12 obtained the best control in inorganic nitrogen concentrations and better in biofloc concentration owing to efficient dissimilation and assimilation. Moreover, from day 26 to day 40, the number of detected OTUs increased by 22.90-58.40% while the Shannon indices have not changed much in all the treatments. Ten of the top 15 genera were the typical denitrifying genera in each treatment, the total abundance of these decreased by 7.00% to 58.00% while that of Paracoccus, as one of the denitrifiers added, increased by 3.00% to 25.00%. This suggested that the addition of citrate at higher c/N could improve the denitrification function of biofloc system.

关键词： biofloc c N ratios carbon source denitrification microbial community structure

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Impact of different nitrogen amendments on the biodegradation of 14c-phenanthrene by endophytic fungal strains in liquid culture

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MIcROBIOLOGIcAL RESEARcH 2023年第0期266卷 000-000页

作者： Omoni, Victor T. Bankole, Paul O. Nwosu, Tobechukwu F. -X. Omovoh, chidinma A. Tennison- Ojo, Adesola Samson Semple, Kirk T. Univ Lancaster Lancaster Environm Ctr Lancaster LA1 4YQ England Fed Univ Agr Dept Microbiol Makurdi 2373 Nigeria Fed Univ Agr Coll Biosci Dept Pure & Appl Bot Abeokuta Nigeria

In this study, the biodegradation of phenanthrene was investigated in newly isolated endophytic fungal strains, Fusarium sp. (KTS01), Trichoderma harzianum (LAN03), Fusarium oxysporum (KTS02), Fusarium oxysporum (LAN04), and clonostachys rosea (KTS05). This was performed under different carbon:nitrogen ratios (10:1, 20:1, and 30:1) using different nitrogen sources (urea and malt extract and ammonium nitrate) over a 30 d incubation period in both static and agitated liquid media. The kinetics of polycyclic aromatic hydrocarbons (PAH) min-eralisation to cO2 (lag phases, fastest rates, and overall extents) were measured for all of the fungal strains and nutrient conditions using 14c-phenanthrene. All fungal strains were able to biodegrade 14c-phenanthrene to 14cO2 under the different nutrient amendments. However, 14c-phenanthrene mineralisation varied for most of the fungal strains in static and agitated culture conditions. Greater extents of mineralisation were found in fungal cultures (strains KTS05 and KTS01) with c:N ratio of 10:1 in both static and agitated conditions, while the fungal strains (KTS05 and LAN03) showed the greatest phenanthrene mineralisation after N source amendments, particularly with malt extract. In addition, the phenanthrene mineralisation increased with higher c:N ratios for clonostachys rosea (KTS05) only. consequently, the results reported here provide a promising potential for the endophytic fungal strains and the importance of nutrients amendments for the enhanced degradation of PAHs contaminated environments.

关键词： Endophytic fungi Spent brewery grains Phenanthrene Nitrogen sources c N ratio

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