Process Safety and Environmental Protection最新文献_第10页

Microwave-enhanced Fe/Al recovery from red mud: Mechanistic role of carbothermal reduction and alkali activation in mineral transformation 微波强化赤泥铁/铝回收：碳热还原和碱活化在矿物转化中的机理作用

IF 6.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2025-04-18 DOI: 10.1016/j.psep.2025.107150

Yuhua Huang , Wei Mo , Jinpeng Feng , Chunyan He , Jinlin Yang , Shaojian Ma , Xiujuan Su

{"title":"Microwave-enhanced Fe/Al recovery from red mud: Mechanistic role of carbothermal reduction and alkali activation in mineral transformation","authors":"Yuhua Huang , Wei Mo , Jinpeng Feng , Chunyan He , Jinlin Yang , Shaojian Ma , Xiujuan Su","doi":"10.1016/j.psep.2025.107150","DOIUrl":"10.1016/j.psep.2025.107150","url":null,"abstract":"<div><div>Red mud, a globally prevalent industrial byproduct, poses critical environmental risks due to its alkaline nature and heavy metal content, while conventional treatment methods remain energy-intensive and inefficient. This study develops a microwave-assisted strategy combining carbothermal reduction and alkaline activation to enable synchronous Fe/Al recovery. Microwave facilitates rapid mineral phase transformation through internal heating and selective heating, while sodium carbonate additives preferentially convert aluminum-bearing phases into acid-soluble aluminates (NaAlO<sub>2</sub>/NaAlSiO<sub>4</sub>) without compromising carbothermal reduction of Fe<sub>2</sub>O<sub>3</sub> to FeO/NaFeO<sub>2</sub>. Experimental results demonstrate 92.1 % Fe and 92.9 % Al recovery under optimized conditions (900°C, 10 min), representing a 20.4 % Al recovery improvement compared to conventional methods. Mechanistic investigations through characterization and thermodynamic analyses elucidate the distinct phase evolution pathways of Fe and Al, emphasizing sodium-mediated restructuring of aluminosilicates and high-temperature iron oxide reduction facilitated by microwave. The iron-aluminum-rich leachate exhibits potential for secondary resource utilization. This work elucidates a dual Fe/Al activation mechanism for red mud recovery, achieving high recovery efficiencies (Fe: 92.1 %, Al: 92.9 %) and providing theoretical insights into sustainable resource utilization.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"198 ","pages":"Article 107150"},"PeriodicalIF":6.9,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of chemical and mineral foaming agents on expansion, insulation, strength features, and microstructure of foam backfill 化学发泡剂和矿物发泡剂对泡沫充填体膨胀、保温、强度特性和微观结构的影响

IF 6.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2025-04-18 DOI: 10.1016/j.psep.2025.107194

Tingting Jiang , Shuai Cao , Erol Yilmaz

{"title":"Effect of chemical and mineral foaming agents on expansion, insulation, strength features, and microstructure of foam backfill","authors":"Tingting Jiang , Shuai Cao , Erol Yilmaz","doi":"10.1016/j.psep.2025.107194","DOIUrl":"10.1016/j.psep.2025.107194","url":null,"abstract":"<div><div>Composed of large numbers of bubbles, foam creates an insecure system and is efficiently used in cementitious materials, including cemented tailings backfill (CTB). Foam-CTB (FCTB) retains some benefits of little density/thermal conductivity, and high workability/fire resistance. However, the behavior of FCTB is governed by its unique microstructure, which heavily relies on types and features of the foam used in mine fill. In this study, a novel arrangement of expansion and thermal insulation-based FCTB was created by tailings, foaming agents (FA) and cement as raw material. The study investigated the effects of expansion features, strength, thermal insulation and microstructure of FCTB using expansion tests, uniaxial compression, thermal conductivity measurements, and analyses via XRD, FTIR, and SEM-EDS. Lab findings certify that adding three diverse FA (i.e., SDS: sodium dodecyl sulphate, anionic surfactant; ADC: azodicarbonamide, chemical foaming agent; and DTAB: dodecyl trimethyl ammonium bromide, cationic surfactant) significantly increased the expansion rate of slurry, and DTAB-0.8 increased by 14.6 %. By rising FA dosage, UCS of FCTB dwindled as a whole, but the strength of ADC and DTAB increased by 45.15 % and 28.21 % respectively at 0.2 % content. In chorus, FA pointedly improved FCTB’s peak strain, enhancing its ductility. Addition of FA also significantly diminished FCTB’s thermal conductivity. As content of DTAB was 0.8 %, thermal conductivity dropped to 0.5726 W/(m·K), enriching fill’s thermal insulation ability. FA also promoted the formation of hydration yields. By rising FA content, porosity increased, and hydration yields adhered to fill surface. FCTB has superb thermal conductivity and strength properties, which afford a novel idea for source use of solid waste such as tailings, and provide a potential technical way for the development of efficient filling thermal insulation materials.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"198 ","pages":"Article 107194"},"PeriodicalIF":6.9,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental investigation on thermal runaway propagation of lithium-ion battery module under different trigger locations 不同触发位置下锂离子电池模组热失控传播的实验研究

IF 6.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2025-04-18 DOI: 10.1016/j.psep.2025.107166

Zhiyuan Li , Yifeng Cheng , Kangjie Ding , Shuping Wang , Yin Yu , Junjie Wang , Zhixiang Cheng , Kaiqiang Jin , Wenxin Mei , Qingsong Wang

{"title":"Experimental investigation on thermal runaway propagation of lithium-ion battery module under different trigger locations","authors":"Zhiyuan Li , Yifeng Cheng , Kangjie Ding , Shuping Wang , Yin Yu , Junjie Wang , Zhixiang Cheng , Kaiqiang Jin , Wenxin Mei , Qingsong Wang","doi":"10.1016/j.psep.2025.107166","DOIUrl":"10.1016/j.psep.2025.107166","url":null,"abstract":"<div><div>The Li-ion battery (LIB) module is composed of numerous individual cells, and the locations at which thermal runaway (TR) is triggered play a crucial role in influencing thermal runaway propagation (TRP). Nevertheless, the impact of the TR trigger location on TRP within LIB modules remains inadequately understood. This work investigates the influence of the TR trigger locations location on TRP in both LiNi<sub>0.5</sub>Co<sub>0.2</sub>Mn<sub>0.3</sub>O<sub>2</sub> (NCM523) and LiFePO<sub>4</sub> (LFP) battery modules. Our findings demonstrate that relocating the trigger location from the corner to the center increases the TRP rate of the NCM523 (LFP) module from 0.365 (0.244) to 2.270 (0.685) cell/min. Additionally, the energy utilization rate of the NCM523 (LFP) module rises from 31.3 % (28.9 %) to 56.1 % (46.5 %). The ejected particulate matter from LIBs is further analyzed using scanning electron microscopy-energy dispersive spectroscopy. Finally, this paper proposes a hazard assessment model to evaluate the risks associated with LIB modules under different trigger locations. The results indicate that transitioning the trigger location from the corner to the center exacerbates the hazards associated with LIB modules. This study systematically elucidates the impact of cathode materials and trigger locations on TRP, offering definitive guidance for the safety management and design of electric vehicle modules.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"198 ","pages":"Article 107166"},"PeriodicalIF":6.9,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The influence of temperature, H2O, and NO2 on corrosion in CO2 transportation pipelines 温度、H2O和NO2对CO2输送管道腐蚀的影响

IF 6.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2025-04-18 DOI: 10.1016/j.psep.2025.107190

Kenneth René Simonsen , Jacalyn Goebel , Dennis Severin Hansen , Simon Pedersen

{"title":"The influence of temperature, H2O, and NO2 on corrosion in CO2 transportation pipelines","authors":"Kenneth René Simonsen , Jacalyn Goebel , Dennis Severin Hansen , Simon Pedersen","doi":"10.1016/j.psep.2025.107190","DOIUrl":"10.1016/j.psep.2025.107190","url":null,"abstract":"<div><div>The expansion of Carbon Capture, Utilization, and Storage (CCUS) highlights the growing need for carbon dioxide (CO<sub>2</sub>) pipeline transportation. While pure CO<sub>2</sub> is non-corrosive, impurities such as H<sub>2</sub>O and NO<sub>2</sub> create a corrosive environment that risks pipeline integrity. This study investigates how H<sub>2</sub>O and NO<sub>2</sub> concentrations, along with temperature, influence corrosion under CO<sub>2</sub> pipeline conditions. The investigation was performed in an autoclave setup emulating a linear velocity of 0.96 m/s at 100 bar and temperatures of 5 <sup>∘</sup>C and 25 <sup>∘</sup>C, testing X52 and GR70, and a more corrosion-resistant 9Cr alloy. The results indicated that the presence of NO<sub>2</sub> elevated the corrosion rate compared to scenarios without. Low H<sub>2</sub>O concentration led to a corrosion rate of up to five times higher at 5 <sup>∘</sup>C, compared to at 25 <sup>∘</sup>C, in the presence of NO<sub>2</sub>. Low to moderate corrosion was observed for the carbon steels without NO<sub>2</sub> and with 70 ppmv H<sub>2</sub>O at both temperatures. Reducing the H<sub>2</sub>O concentration below 70 ppmv and removing NO<sub>2</sub>, while SO<sub>2</sub> and O<sub>2</sub> are present, will only result in low to moderate corrosion in the carbon steel CO<sub>2</sub> pipeline. The corrosion rate for X52 and GR70 was 0.065 mm/y and 0.016 mm/y higher or 5 and 3 times greater, respectively, at 5 <sup>∘</sup>C compared to 25 <sup>∘</sup>C. The study concludes that H<sub>2</sub>O should be maintained below 70 ppmv and NO<sub>2</sub> should be eliminated to prevent severe corrosion. Emphasizing the importance of CO<sub>2</sub> specification compliance and the need for further research into CO<sub>2</sub> compositions that align with the specifications.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"198 ","pages":"Article 107190"},"PeriodicalIF":6.9,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In situ ultrasonic-backwash regeneration of upflow activated carbon filters for improved removal of organics from drinking water 上流式活性炭过滤器的原位超声反冲洗再生，以改善饮用水中有机物的去除

IF 6.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2025-04-17 DOI: 10.1016/j.psep.2025.107188

Yuanxiang Shan , Bingjie Zhou , Zhendong Liu , Lu Li , Kemei Zhou , Zhiwei Wang , Binbin Wu , Wanting Feng , Hongqin Xue , Zheng Wang

{"title":"In situ ultrasonic-backwash regeneration of upflow activated carbon filters for improved removal of organics from drinking water","authors":"Yuanxiang Shan , Bingjie Zhou , Zhendong Liu , Lu Li , Kemei Zhou , Zhiwei Wang , Binbin Wu , Wanting Feng , Hongqin Xue , Zheng Wang","doi":"10.1016/j.psep.2025.107188","DOIUrl":"10.1016/j.psep.2025.107188","url":null,"abstract":"<div><div>In this study, <em>in situ</em> ultrasonic-backwash regeneration of upflow activated carbon filters for enhanced removal of organic matter from drinking water was investigated by treating granular activated carbon at different ultrasonication frequencies (40 and 120 kHz). The activated carbon was physically characterized before and after treatment by SEM, BET, FTIR, XPS, and XRD, and the microbial diversity of the biofilm on the regenerated activated carbon was also analyzed. The results of 120-day tracking analysis showed that ultrasonic-backwashing regeneration improves the organic-matter-removal efficiency by 5 %–13 %, with the regeneration effect of ultrasonic waves at 120 kHz being superior to that at 40 kHz. Characterization of the activated carbon showed that ultrasonic treatment increases its mesopore content while decreasing its particle size but does not change its elemental composition or crystal structure, although prolonged high-frequency sonication appears to decrease the number of oxygen-containing functional groups on the carbon surface, which may benefit wettability. Furthermore, the treatment does not change the core species of the microbial community on the activated carbon. Overall, the treatment is a cost-effective and efficient way to improve the removal of organic matter from drinking water.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"198 ","pages":"Article 107188"},"PeriodicalIF":6.9,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dissolution characteristics of steel slag in aqueous solution and preparation of high purity CaCO3 钢渣在水溶液中的溶解特性及高纯碳酸钙的制备

IF 6.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2025-04-17 DOI: 10.1016/j.psep.2025.107183

Yarong Li , Hongqiang Liao , Chao Li , Zhibin Ma , Yanxia Guo

{"title":"Dissolution characteristics of steel slag in aqueous solution and preparation of high purity CaCO3","authors":"Yarong Li , Hongqiang Liao , Chao Li , Zhibin Ma , Yanxia Guo","doi":"10.1016/j.psep.2025.107183","DOIUrl":"10.1016/j.psep.2025.107183","url":null,"abstract":"<div><div>Steel slag (SS), a solid byproduct of the steel-making process, possesses high potential for value-added applications on account of its abundant content of CaO and MgO. These alkaline components make steel slag a viable candidate for carbonation and CO<sub>2</sub> fixation processes. This study investigated the hydration of steel slag, focusing on how variables such as particle size, reaction temperature, and reaction time influence the characteristics and efficiency of the resulting products. The findings revealed that hydration predominantly occurs through the dissolution of free calcium oxide (f-CaO), with an optimal total dissolution rate reaching 7.2 %. Notably, the dissolution rates of Ca, Si, and Mg were 10.7 %, 2.0 %, and 0.6 %, respectively, and the dissolution rate of Fe was almost zero. The surface covering model effectively described the interaction of steel slag in an aqueous solution. Under conditions of temperature at 25 ℃, a CO<sub>2</sub> flow rate of 200 mL/min, stirring speed at 600 rpm, and an aging time of 0 min, a pure calcium carbonate product with a purity level of 99.5 % and a particle size measuring 4.98 μm was successfully obtained. This study would offer a potential application approach for exploiting low-cost industrial solid waste steel slag to prepare calcite-type calcium carbonate, realizing the high-value utilization of steel slag and CO<sub>2</sub> fixation as well as emission reduction.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"198 ","pages":"Article 107183"},"PeriodicalIF":6.9,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A miniaturized electronic nose system based on sensor array for C2H4 concentration prediction 基于传感器阵列的C2H4浓度预测小型化电子鼻系统

IF 6.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2025-04-17 DOI: 10.1016/j.psep.2025.107189

Zhenyu Liu , Zhencheng Liu , Jilong Wu , Peter Feng , Jin Chu , Xiaoyan Peng

{"title":"A miniaturized electronic nose system based on sensor array for C2H4 concentration prediction","authors":"Zhenyu Liu , Zhencheng Liu , Jilong Wu , Peter Feng , Jin Chu , Xiaoyan Peng","doi":"10.1016/j.psep.2025.107189","DOIUrl":"10.1016/j.psep.2025.107189","url":null,"abstract":"<div><div>Ethylene (C<sub>2</sub>H<sub>4</sub>) is a highly flammable and explosive gas, which may cause severe hazards. To prevent the potential fire or explosion incidents and ensure the safety of chemical plants or surrounding environments, monitoring the concentration of C<sub>2</sub>H<sub>4</sub> gas is essential. As a device for detecting gases, the electronic nose (E-nose) can effectively predict concentrations of gases, but traditional E-nose systems face challenges such as poor portability, high cost, and high-power consumption. In this study, a miniaturized, low-cost portable E-nose device was designed utilizing micro-electromechanical systems (MEMS) sensors, integrated with advanced deep learning algorithms, to achieve the real-time prediction of C<sub>2</sub>H<sub>4</sub> concentrations. Subsequently, a dataset containing the samples originating from varying concentrations of C<sub>2</sub>H<sub>4</sub>, ranging from 10 to 100 ppm, was systematically collected. To enhance the prediction accuracy, a CE-CNN model was proposed, which integrates an Efficient Channel Attention mechanism into the Convolutional Neural Network, while Cosine Annealing Warm Restart strategy optimizes the training process by dynamically adjusting the learning rate. Compared to current popular algorithms, CE-CNN achieves the lowest mean absolute error (MAE) of 1.7286 and mean square error (MSE) of 2.1064, as well as the highest R-squared (R<sup>2</sup>) value of 0.9985 for C<sub>2</sub>H<sub>4</sub> gas concentration prediction. Finally, edge computing was implemented on the designed portable E-nose device, enabling independent gas data collection, processing, and prediction, with a maximum concentration prediction error of only 6.80 % of the actual concentration.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"198 ","pages":"Article 107189"},"PeriodicalIF":6.9,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Salt-laden pharmaceutical industry reverse osmosis reject wastewater treatment using halotolerant biocatalyst integrated heterogeneous activated carbon fenton catalytic oxidation process 采用耐盐生物催化剂集成多相活性炭fenton催化氧化工艺处理含盐制药工业废水

IF 6.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2025-04-16 DOI: 10.1016/j.psep.2025.107185

Jagriti Jha Sanjay , Sekaran Ganesan , Ramani Kandasamy

{"title":"Salt-laden pharmaceutical industry reverse osmosis reject wastewater treatment using halotolerant biocatalyst integrated heterogeneous activated carbon fenton catalytic oxidation process","authors":"Jagriti Jha Sanjay , Sekaran Ganesan , Ramani Kandasamy","doi":"10.1016/j.psep.2025.107185","DOIUrl":"10.1016/j.psep.2025.107185","url":null,"abstract":"<div><div>Pharmaceutical reverse osmosis reject (PROR), a retentate generated during the reverse osmosis process of pharmaceutical effluent treatment, comprises high concentration of toxic active pharmaceutical ingredients (APIs) coupled with high salinity and total dissolved solids (TDS). These properties make the treatment of RO reject challenging for conventional technologies. The current study designs a novel strategy to accelerate PROR effluent treatment using a strategically designed biostimulant-mediated halotolerant biocatalytic oxidation (BMHBO) system coupled with Heterogeneous activated carbon Fenton catalytic oxidation (HAFCO) system. The identified halotolerant microbial system comprised <em>Bacillus cereus OR186720, Bhargavaea indica</em> OR186702, <em>Bacillus paramycoides</em> OR186695, and <em>Lysinibacillus macroides</em> OR186663, as determined by 16S rRNA analyses<em>.</em> The efficiency of the integrated system, evidenced by COD, TDS, and salinity reductions of 98.11 %, 91.66 %, and 54.51 %, respectively, was further validated through FT-IR, <sup>1</sup>H NMR, GC-MS, EDX, and XRF analyses. The present study demonstrated that the integrated treatment systems of BMHBO and HAFCO achieved accelerated treatment of PROR wastewater by overcoming the harmful interference posed by elevated TDS content without the generation of secondary pollution.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"198 ","pages":"Article 107185"},"PeriodicalIF":6.9,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of nitrogen-boron-sulfur triple-doping on the fluorescence emission of carbon dots and their sensing detection of copper ions 氮硼硫三掺杂对碳点荧光发射及对铜离子的传感检测的影响

IF 6.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2025-04-16 DOI: 10.1016/j.psep.2025.107184

Na Zheng , Meng Zhang , Benhua Liu , Ju Tang , Fan Zhang , Guo Chen

{"title":"Influence of nitrogen-boron-sulfur triple-doping on the fluorescence emission of carbon dots and their sensing detection of copper ions","authors":"Na Zheng , Meng Zhang , Benhua Liu , Ju Tang , Fan Zhang , Guo Chen","doi":"10.1016/j.psep.2025.107184","DOIUrl":"10.1016/j.psep.2025.107184","url":null,"abstract":"<div><div>This study used a one-step hydrothermal approach to synthesize three doped carbon dots, Cdots-1 (N-doped), Cdots-2 (N, S co-doped), and Cdots-3 (N, S, B co-doped), using aspartic acid, cysteine, and boric acid as raw ingredients. We employed XRD, TEM, Uv-Vis, XPS, FTIR, and PL techniques to characterize the morphology, elemental composition, and optical properties of samples. We found that doping is an effective way to control the core structure and emission properties of carbon dots. Among the three carbon dots, Cdots-3 has the highest fluorescence intensity and emits strong blue fluorescence. In addition, we found that Cdots-3 is highly responsive to Cu<sup>2 +</sup> with a linear equation of y = 955.02–1.68976x, which makes it a fluorescent probe that can detect Cu<sup>2+</sup> rapidly. The fluorescence lifetime of Cdots-3 was shortened from 3.76 ns to 3.33 ns after adding Cu<sup>2+</sup>. The analysis shows that the fluorescence quenching of Cdots-3 is mainly a dynamic quenching mechanism accompanied by a standard static quenching process. Moreover, to verify the detection accuracy of the experiment, we used the linear regression model, random forest regression model, support vector machine regression model, and decision tree regression model to predict the detection model, respectively. Among them, the random forest model has the best prediction effect. The coefficient of determination reaches 0.9996, and the mean square error is 0.0167. It is suggested that Cdots can be used as fluorescent probes to detect the reliability of Cu<sup>2+</sup>.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"198 ","pages":"Article 107184"},"PeriodicalIF":6.9,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual skeleton network in situ-construction of alkaline anion-exchange membrane for boosting water electrolysis at low concentration of alkaline solution 双骨架网原位构建促进低浓度碱性溶液电解的碱性阴离子交换膜

IF 6.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2025-04-16 DOI: 10.1016/j.psep.2025.107178

Min Wang , Yongnan Zhou , Xueqi Dong , Wei Xiao , Yuyu Liu , Jinli Qiao

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