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Early Warning Thresholds for Microalgal Blooms and Environmental Drivers of Substrate Microalgae Recovery in Litopenaeus vannamei Aquaculture

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Water, Air, and Soil Pollution 2025年第6期236卷 1-16页

作者： Ma, Weixing Shi, Yuanyuan Ma, Ni Liu, Gaojian Gao, Yuxin Ma, Jiaru Yi, Zhaohui Yang, Min Li, Zhaoxia College of Environmental Science & Engineering Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Jiangsu Province Yancheng224051 China School of Marine and Biological Engineering Yancheng Institute of Technology Jiangsu Province Yancheng224051 China Jiangsu YIDA TestingTechnology Co. Ltd. Building A- 15 Big Data Industrial Park Chengnan New District Jiangsu Province Yancheng224051 China Shenzhen518055 China

In response to the global demand for high-quality protein, Litopenaeus vannamei aquaculture has rapidly expanded. However, microalgal blooms often degrade water quality, resulting in reduced yields and significant financial losses. This study investigated the recovery dynamics of substrate microalgae, which act as seed banks for microalgal blooms, and identified early warning thresholds for algae under varying environmental conditions. Sediments from bfIGuccess (BS) and breeding failure (BF) sheds were analyzed to evaluate the effects of temperature (6 °C–21 °C), light intensity (50–2,000 lx), and nutrient types (BG11 and raw water). The findings indicated that environmental factors influencing microalgal recovery followed the priority order: temperature > light > nutrient salts. The highest recovery was observed at temperatures of 11 °C and 16 °C under 2,000 lx illumination. key early warning algal species, including Melosira granulata, Cyclotella, and Chlorella, exhibited thresholds of 0.9–42.9 × 104 cells/g, 0.1–28.8 × 104 cells/g, and 1.0–31.7 × 104 cells/g, respectively. This study uniquely linked substrate algae recovery to aquaculture failures, providing quantitative thresholds and actionable insights for proactive microalgal blooms monitoring and control. These findings form a scientific basis for improving water quality management and ensuring sustainable L. vannamei aquaculture © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2025.

关键词： Aquaculture

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Interfacial B-O bonding modulated S-scheme B-doped N-deficient C_(3)N_(4)/O-doped-C_(3)N_(5) for efficient photocatalytic overall water splitting

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Chinese Chemical Letters 2025年第1期36卷 355-361页

作者： Entian Cui Yulian Lu Zhaoxia Li Zhilei Chen Chengyan Ge Jizhou Jiang Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of TechnologyYancheng 224051China School of Environmental Ecology and Biological Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205China

Photocatalytic overall pure water splitting is a promising method for generating green hydrogen energy under mild ***,this process is often hindered by sluggish electron-hole separation and *** address this,a step-scheme(S-scheme)B-doped N-deficient C_(3)N_(4)/O-doped C_(3)N_(5)(BN-C_(3)N_(4)/O-C_(3)N_(5))heterojunction with interfacial B-O bonds has been *** Pt and Co(OH)_(2) as co-catalysts,BN-C_(3)N_(4)/O-C_(3)N_(5) S-scheme heterojunction demonstrates significantly enhanced photocatalytic activity for overall pure water splitting under visible light,achieving H_(2) and O_(2) evolution rates of 40.12 and 19.62μmol/h,*** characterizations and experiments revealed the performance-enhancing effects of the enhanced built-in electric field and the interfacial B-O ***,the strengthened built-in electric field provides sufficient force for rapid interfacial electron ***,by reducing the transport energy barrier and transfer distance,the interfacial B-O bonds facilitate rapid recombination of electrons and holes with relatively low redox potential via the S-scheme charge-transfer route,leaving the high-potential electrons and holes available for H^(+)reduction and OH^(-)oxidation ***,the photocatalytic efficiency of BN-C_(3)N_(4)/O-C_(3)N_(5) S-scheme heterojunction was significantly improved,making it a promising approach for green hydrogen production through overall pure water splitting.

关键词： Interfacial B-O bonds BN-C_(3)N_(4) O-C_(3)N_(5) S-scheme heterojunction Water splitting

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Preparation of a novel foam concrete for the carbonation of steel slag with low thermal conductivity and enhanced CO2 capture

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Materials Letters 2025年 394卷

作者： Wang, Yuhan Lu, Bao Hou, Guihua Key Laboratory for Advanced Technology in Environment Protection of Jiangsu Province Yancheng Institute of Technology Jiangsu Yancheng224051 China

The foam concrete was prepared using carbonation curing with steel slag as the raw material. The composition and moisture content of carbonated steel slag and hydrated Portland cement were compared. The optimal preparation parameters and properties of carbonated steel slag foam concrete were investigated. Results showed that the 14 d moisture content of carbonated steel slag (5.3 %) was significantly lower than that of hydrated Portland cement (13.5 %), indicating that carbonated steel slag contains fewer heat-transfer mediums, making it superior for foam concrete production. Under optimum conditions, the steel slag foam concrete exhibited a thermal conductivity of 0.0547 W/(m·K), compressive strength of 0.59 MPa, and CO2 sequestration capacity of 138.7 g/kg. This study offers a novel approach for preparing lightweight insulation wall materials while simultaneously utilizing steel slag and CO2. © 2025

关键词： Positive temperature coefficient

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Fabrication of porous bowl-like WO3 structures for ppb-level dimethylamine gas sensing

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Applied Surface Science 2025年 701卷

作者： Su, Tianci Hong, Daocheng Liu, Bohao Li, Lin Qian, Luzheng Yang, Xiuli Xu, Ning Yue, Lu Zhang, Wenhui Department of Physics Yancheng Institute of Technology Jiangsu224051 China Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Jiangsu224051 China

Porous bowl-like WO3 structures were prepared using a facile spray pyrolysis method using silica spheres (Ludox, 5–7 nm) as template. The effects of different amounts of Ludox on the structure, morphology, and gas-sensing performance of WO3 were investigated. The sensor based on the porous bowl-like WO3 structures prepared with 1.5 g Ludox exhibits the highest response to dimethylamine (DMA) at 220 °C, with a response of 650 (S = Ra/Rg), which is approximately 6.5 times that of WO3 microspheres prepared without Ludox. Additionally, this sensor shows fast response and recovery times of 20 s and 30 s, respectively, a low detection limit of 10 ppb, good selectivity, and excellent repeatability along with long-term stability towards DMA. The reaction process of DMA is revealed using in situ diffuse reflectance infrared fourier transform spectroscopy (DRIFT) and validated through density functional theory (DFT) calculations. The DFT results indicated that the adsorption energy of WO3 (020) is higher than that of WO3 (001) and WO3 (200). Its excellent gas-sensing performance is closely related to its unique porous bowl-like structure, abundant oxygen vacancies, highly exposed facets of (020) and large specific surface area. © 2025

关键词： Spray pyrolysis

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Flexible zwitterionic arm post-modificated UiO-66 for high and ultra-fast proton conduction

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Inorganic Chemistry Communications 2025年 178卷

作者： Hu, Jun Cao, Ye Cai, Lu Wu, Guanzheng Ge, Yuanyu Lin, Ling Li, Ziyin School of Textiles and Clothing & Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Yancheng 224051 China

Metal-organic frameworks (MOFs) based proton conductors, as a promising alternative to proton exchange membranes, are in urgent need of developing effective methods to enhance their proton conductivity. Here, we report the enhanced and ultra-fast proton conduction facilitated by the post-covalent bonding of the flexible zwitterionic arm (sulfobetaine methacrylate: SBMA) with UiO-66. A new zwitterionic MOF based proton conductor (UiO-66-SB) exhibits the higher proton conductivity of 0.1 × 10⁻² S·cm⁻¹ but with the activation energy (E_a) of only 5.8 kJ/mol at 85 °C and 90 % RH, indicating ultra-fast proton transport. This result was attributed to the continuous and shorter hydrogen bonded network formed by flexible zwitterionic arms, water molecules, and residual –NH₂. This work also demonstrates that zwitterions are highly advantageous as proton carrier media for the post-modification of MOFs. © 2025 Elsevier B.V.

关键词： Fast proton transport Metal-organic frameworks Post-modified Proton conductivity Zwitterion

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Flexible, scalable, and bifunctional MOF-based nanofibrous membranes with gems-on-string structure for simultaneous efficient water evaporation and pollution remediation

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Chemical Engineering Journal 2025年 514卷

作者： Ge, Song Song, Jun Zhang, Jichao Yang, Xiu-Li Xie, Ming-Hua Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Yancheng224051 China College of Textile and Clothing Yancheng Institute of Technology Yancheng224051 China Jiangsu Engineering Research Center for Digital Textile Inkjet Printing Key Laboratory of Eco-Textile Jiangnan University Ministry of Education Wuxi214122 China

Solar-driven interfacial evaporation offers a viable pathway for alleviating global water shortages. However, a significant challenge arises when the source water contains organic contaminants, as the evaporation process can lead to the enrichment and exacerbation of pollution in the remaining water. Herein, we constructed a flexible bifunctional nanofibrous membrane evaporator featuring a gems-on-string structure, designed to concurrently realize clean water production and source water purification. This was achieved through the uniform decoration of polypyrrole (PPy) nanoparticles onto silica nanofibers, followed by the tactful immobilization of zeolitic imidazolate framework (ZIF-67) polyhedrons on the fibers via a facile hot-pressing approach. The micro-nano hierarchical structure of the gems-on-string fibers enables multiple reflections between adjacent gems, significantly enhancing full-spectrum light absorption (96.3 %) and photothermal conversion. Moreover, the superhydrophilic and hierarchically interconnected channels within the membrane facilitate water transport and evaporation enthalpy diminution. Furthermore, the synergistic effects of localized heat from PPy, and photocatalysis and cobalt sites from ZIF-67 significantly promote the activation of peroxymonosulfate. As a result, the bifunctional evaporator achieves a rapid evaporation rate (2.29 kg m-2h−1) with a remarkable solar-water conversion efficiency (93.2 %) under one sun, outperforming most state-of-art evaporators, while maintaining superior oxytetracycline removal (92.5 %). Significantly, the evaporator delivers a daily freshwater output (5.3 kg m−2) when treating complex wastewater/seawater. This study not only presents an efficient strategy for fabricating flexible high-performance photothermal-catalytic membranes, but also provides a sustainable platform for freshwater production and sewage purification. © 2025 Elsevier B.V.

关键词： River pollution

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Boron cluster-based TADF emitter via through-space charge transfer enabling efficient orange-red electroluminesce

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Chinese Chemical Letters 2025年第3期36卷 232-238页

作者： Xiao Yu Dongyue Cui Mengmeng Wang Zhaojin Wang Mengzhu Wang Deshuang Tu Vladimir Bregadze Changsheng Lu Qiang Zhao Runfeng Chen Hong Yan State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Key Laboratory for Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)Jiangsu National Synergistic Innovation Center for Advanced Materials(SICAM)Nanjing University of Posts&TelecommunicationsNanjing 210023China Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of TechnologyYancheng 224051China College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) Nanjing University of Posts&TelecommunicationsNanjing 210023China A.N.Nesmeyanov Institute of Organoelement Compounds(INEOS) Russian Academy of SciencesMoscow 119991Russia

Thermally activated delayed fluorescence(TADF)materials driven by a through-space charge transfer(TSCT)mechanism have garnered wide ***,access of TSCT-TADF molecules with longwavelength emission remains a formidable *** this study,we introduce a novel V-type DA-D-A’emitter,Trz-mCzCbCz,by using a carborane *** design strategically incorporates carbazole(Cz)and 2,4,6-triphenyl-1,3,5-triazine(Trz)as donor and acceptor moieties,*** calculations alongside experimental validations affirm the typical TSCT-TADF characteristics of this *** to the unique structural and electronic attributes of carboranes,Trz-mCzCbCz exhibits an orange-red emission,markedly diverging from the traditional blue-to-green emissions observed in classical Cz and Trz-based TADF ***,bright emission in aggregates was observed for Trz-mCzCbCz with absolute photoluminescence quantum yield(PLQY)of up to 88.8%.As such,we have successfully fabricated five organic light-emitting diodes(OLEDs)by utilizing Trz-mCzCbCz as the emitting *** is important to note that both the reverse intersystem crossing process and the TADF properties are profoundly influenced by host *** fabricated OLED devices reached a maximum external quantum efficiency(EQE)of 12.7%,with an emission peak at 592 *** represents the highest recorded efficiency for TSCT-TADF OLEDs employing carborane derivatives as emitting layers.

关键词： Thermally activated delayed fluorescence Through-space charge transfer Carborane Boron clusters Organic light-emitting diodes

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Sensitive Detection of Acoustic Vibration at Nanometer Scale

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ACS Sensors 2025年

作者： Liu, Hanyu Ma, Jinling Xie, Mingcai Yang, Weiqing Wan, Sushu Hong, Daocheng Wei, Zhihong Tian, Yuxi State Key Laboratory of Analytical Chemistry for Life Science Key Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical Engineering Nanjing University Nanjing210023 China Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Yancheng224051 China Department of Forensic Science and Technology Zhengzhou Police University Henan Zhengzhou450000 China

The detection of vibrations at nanometer scale is crucial for a variety of applications. The spatial resolution of acoustic detection is limited to micrometers due to its long wavelength. Single-molecule probes with a gold nanorod (GNR) have been proposed to detect an acoustic wave at the nanometer scale at room temperature. However, the detection efficiency is extremely low due to the random distribution of probe molecules and GNRs, and the detection can be used only in solid phases. In this work, we chemically linked the GNR and probe molecules using dsDNA, which provided precise distance control. Compared to the previous work, the detection sensitivity was improved by 2 orders of magnitude, approaching the theoretical detection limit, and the detection efficiency was improved from below 1% to over 95%. Furthermore, such a dsDNA connection allows sensitive detection of acoustic wave under water by a single nanodetector for "listening" to musical sounds covering two octaves. These results suggest that our achievement in precise distance control represents a significant step toward the practical application of single molecule detection of acoustic wave. © 2025 American Chemical Society.

关键词： Probes

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A comprehensive review of dredged marine sediments -multiple roles of utilization in cement-based materials and construction products

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Marine Pollution Bulletin 2025年 217卷 118079页

作者： Ma, Jian Sun, Jinfeng Yu, Zhuqing Hou, Guihua Xia, Bingjie Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Yancheng224051 China College of Materials Science and Engineering Nanjing Tech University Nanjing211816 China State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing211816 China College of Marine and Bioengineering Yancheng Institute of Technology Yancheng224051 China

Dredged marine sediments (DMS), produced during harbor maintenance and waterway development, pose significant environmental and disposal challenges. Increasingly, research has focused on their potential reuse in construction materials, offering a sustainable alternative to waste disposal and promoting resource conservation. This paper provides a comprehensive review of the potential application of DMS in cementitious systems, exploring their multiple roles as alternative binders or aggregates in sustainable practices. key properties and treatment methods of DMS are summarized, and the mechanical and durability of DMS-incorporated materials are critically evaluated, highlighting their suitability and challenges. The carbon emissions of DMS blended cement are calculated and found to be 16.58 % lower than those of OPC. Further research is needed to standardize processing techniques, evaluate long-term performance, and facilitate large-scale adoption in sustainable construction. © 2025 Elsevier Ltd

关键词： Wastewater disposal

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Properties of Mno2 and Mn-Based Perovskite Oxides for So2 Captures Under Controlled Temperature and Atmosphere

SSRN

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SSRN 2025年

作者： Xu, Xuanwen Wang, Shuying Shi, Jingwen Yang, Liduo Lu, Yuehao Shiyi, Fengzhang Lu, Yulian Wu, Pengyu Fan, Lele Jiang, Ruiyu Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Yancheng224051 China School of Chemistry and Chemical Engineering Yancheng Institute of Technology Yancheng224051 China School of Mechanics and Safety Engineering Zhengzhou University 100 Kexue Road Henan Zhengzhou450001 China

The sulfur dioxide (SO2) is produced in considerable amounts as an air pollutant during the combustion of fossil fuels. Oxidation capture of SO2 based on metal oxides is a promising strategy for purifying the flue gas. In this work, we synthesized MnO2 and perovskite AMnO3 (A= Mg, Ca, Sr and Ba) adsorbents, through hydrothermal and solid state reactions, for the oxidation captures of SO2. The optimized conditions including temperatures (5-800 °C) and atmospheres (N2, O2, CO2, CO) were performed on the synthesized adsorbents for studying the properties of SO2 removals. The results indicated MnO2 exhibited excellent performances of SO2 removals in regardless of the presence of O2 because of the strong oxidability (400 °C, breakthrough time: 80 vs. 120 min). AMnO3 adsorbents worked effectively only with the existence of O2 in the atmosphere (400 °C, breakthrough time: 0 vs. 40 min). The catalytic oxidation of CO strongly occurred on the surfaces of MnO2 over 400 °C, causing dramatic drops of SO2 capture abilities (breakthrough time: 0 vs. 120 min). AMnO3 (A= Ca and Sr) adsorbents showed better abilities in the anti-toxication to the catalytic oxidation of CO. The abilities of SO2 captures started to decrease when the temperature reached 700 °C. © 2025, The Authors. All rights reserved.

关键词： Sulfur dioxide

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