Chemical Engineering Science最新文献_第2页

Dangling bonds and asymmetric charge redistribution triggered by grain boundary for improved photocatalytic CO2 reduction and ammonia synthesis 晶界引发的悬空键和不对称电荷重分配改善光催化CO2还原和氨合成

IF 4.7 2区工程技术

Chemical Engineering Science Pub Date : 2025-05-08 DOI: 10.1016/j.ces.2025.121816

Zhiwei Shao, Caichao Ye, Jun Xiong, Ang Li, Wei Jiang, Jun Di

{"title":"Dangling bonds and asymmetric charge redistribution triggered by grain boundary for improved photocatalytic CO2 reduction and ammonia synthesis","authors":"Zhiwei Shao, Caichao Ye, Jun Xiong, Ang Li, Wei Jiang, Jun Di","doi":"10.1016/j.ces.2025.121816","DOIUrl":"https://doi.org/10.1016/j.ces.2025.121816","url":null,"abstract":"The role of grain boundaries in photocatalysis is still an open question. In this work, a generic crystal-induced re-growth strategy is developed to engineer grain boundaries into various 2D atomic layers to boost the photocatalytic activity. Take BOB as an example, the engineered grain boundaries will lead to the generation of asymmetric charge redistributed interface, and work as quantum well to promote the oriented charge separation. Meantime, the grain boundaries will provide active electronic states with abundant dangling bonds to strengthen molecular interaction, and further optimize intermediate conversion. Benefiting from these advantages, the grain boundaries-rich BOB (BOB-GB) display a good CO2 photoreduction rate to yield CO (61.34 μmol g−1h−1), 5.4 and 95.9 times higher than BOB and bulk BOB, respectively. Moreover, it delivers an excellent NH3 generation rate of 13620 μmol g−1h−1, with apparent quantum efficiencies of 43.0 %, 30.7 % at 380, 400 nm, respectively.","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"48 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143920603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction of biomimetic metallo-covalent organic polymers for photocatalytic decontamination of sulfur mustard simulants 用于芥子气模拟物光催化净化的仿生金属共价有机聚合物的构建

IF 4.7 2区工程技术

Chemical Engineering Science Pub Date : 2025-05-08 DOI: 10.1016/j.ces.2025.121812

Chen Sun, Xiao-Lin Liu, Sai-Jin Xiao, Qiang Shi, Zhi-Hao Xue, Yu-Ting Luo, Ru-Ping Liang, Li Zhang, Jian-Ding Qiu

引用次数: 0

Assessment of particle shape and mass fraction on plastic- sand binary fluidization: Experiment and simulation 塑料-砂二元流化过程中颗粒形状和质量分数的评价：实验与模拟

IF 4.7 2区工程技术

Chemical Engineering Science Pub Date : 2025-05-08 DOI: 10.1016/j.ces.2025.121810

Zihao Ma, Jianjian Dai, Sichuang Wu, Hairui Lin, Youwei Cheng, Moshe Sheintuch, Xi Gao

引用次数: 0

Efficient treatment of mariculture wastewater in a bacteria-algal symbiotic moving bed biofilm reactor: Impact of aerobic/anoxic duration 细菌-藻共生移动床生物膜反应器对海水养殖废水的高效处理：好氧/缺氧时间的影响

IF 4.7 2区工程技术

Chemical Engineering Science Pub Date : 2025-05-08 DOI: 10.1016/j.ces.2025.121814

Yaqi Zhu, Rudong Wang, Xinyi Zhu, Duosen Yan, Guodong Zhang, Yun Li, Qinghua Chen, Yan Jiao, Xiaomin Xie, Shanshan Li

{"title":"Efficient treatment of mariculture wastewater in a bacteria-algal symbiotic moving bed biofilm reactor: Impact of aerobic/anoxic duration","authors":"Yaqi Zhu, Rudong Wang, Xinyi Zhu, Duosen Yan, Guodong Zhang, Yun Li, Qinghua Chen, Yan Jiao, Xiaomin Xie, Shanshan Li","doi":"10.1016/j.ces.2025.121814","DOIUrl":"https://doi.org/10.1016/j.ces.2025.121814","url":null,"abstract":"The bacteria-algal symbiotic moving bed biofilm reactor (BAS-MBBR) could remove nitrogen and phosphorus efficiently, but its performance was limited by the aerobic/anoxic duration. Therefore, the impact of aerobic/anoxic duration on removal performance, enzyme activity and microbial structure was studied. The results showed high removal efficiencies of COD (86.15 %), NH4+-N (86.11 %) and TP (87.95 %) under varying aerobic/anoxic durations. The optimal aerobic/anoxic duration of 150 min/170 min achieved the highest oxygen consumption, nitrogen transformation, phosphorus uptake, and enzymatic activity. However, a longer anoxic duration (90 min/230 min) increased extracellular polymer secretion, reactive oxygen species production, and lactate dehydrogenase release, indicating elevated biological toxicity. The increase in anoxic duration promoted the proliferation of Denitromonas and Muricauda in the bacterial community and affected the removal of nitrogen. Chloroplastida thrived under short anoxic durations in the algal community. SAR increased significantly, resulting in changes in algal community structure and pollutant removal efficiency.","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"23 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143920637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling of bubble formation in viscous fluids considering the influence of gas jets 考虑气体射流影响的粘性流体气泡形成模型

IF 4.7 2区工程技术

Chemical Engineering Science Pub Date : 2025-05-08 DOI: 10.1016/j.ces.2025.121766

Xinzhe Que, Zhao Jin, Yixuan Hou, Yongchao Zhou, Yiping Zhang

{"title":"Modeling of bubble formation in viscous fluids considering the influence of gas jets","authors":"Xinzhe Que, Zhao Jin, Yixuan Hou, Yongchao Zhou, Yiping Zhang","doi":"10.1016/j.ces.2025.121766","DOIUrl":"https://doi.org/10.1016/j.ces.2025.121766","url":null,"abstract":"A theoretical method was developed for modeling the non-spherical axisymmetric bubble formation by incorporating two sets of evolution equations on arbitrary surface elements: a Rayleigh-Plesset type equation for the radial expansion and a force balance equation for vertical motion. The proposed method considered the morphological deformation of gas jets based on the free turbulent jet theory of the circular section. The calculated results were compared satisfactorily with the experimental shapes in oil and polyacrylamide aqueous solutions, especially for the shapes featured with sharp tips accounting for jet instabilities. The mean relative errors of the bubble volume, the surface area, the height, and the weight were respectively 5.78%, 4.22%, 3.01%, and 4.67%. The time evolution of force amplitudes on surface elements was examined. At early stage, the radial expansion dominated while the vertical elongation was inhibited. As the bubble volume increased, the positive vertical resultant force made the element elongated to form sharp tip or neck. In particular, the viscosity increased the damping rate, thus suppressing the element fluctuations, while the shear thinning effect weakened the suppression. The contributions of the gas chamber to both the jet instability and the increment of penetration length were analyzed, as these contributions affected the bubble detachment.","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"38 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-adaptive W/O emulsion for reservoir water control: In-situ formation of high internal phase emulsion from ordinary emulsion synergistically stabilized by two surfactants of polyglycerol esters 用于油藏控水的自适应水乳状液：由两种表面活性剂聚甘油酯协同稳定的普通乳液原位形成高内相乳液

IF 4.1 2区工程技术

Chemical Engineering Science Pub Date : 2025-05-08 DOI: 10.1016/j.ces.2025.121809

Junjie Hu , Menglong Yang , Meng Yuan , Ying Yang , Ping Jiang , Zhinan Liu , Guicai Zhang

{"title":"Self-adaptive W/O emulsion for reservoir water control: In-situ formation of high internal phase emulsion from ordinary emulsion synergistically stabilized by two surfactants of polyglycerol esters","authors":"Junjie Hu , Menglong Yang , Meng Yuan , Ying Yang , Ping Jiang , Zhinan Liu , Guicai Zhang","doi":"10.1016/j.ces.2025.121809","DOIUrl":"10.1016/j.ces.2025.121809","url":null,"abstract":"<div><div>In many industrial applications, stable high internal phase emulsions (HIPEs) are of great value for stable dispersion and effective delivery of internal phase substances. For example, in recent years, W/O HIPEs have emerged as one of the most promising soft materials for water control in horizontal wells for enhanced oil recovery (EOR), owing to their high viscosity and the Jamin effect. However, the formation of stable W/O HIPEs under low surfactant concentrations and low-energy emulsification conditions remains a challenge. In this study, a feasible strategy is proposed to address the above technical challenges. Under mild stirring (500 rpm) condition, the paraffin oil containing 3 % (w/w) of a emulsifier blend of polyglyceryl-3-dioleate (POOC) and polyglycerol polyricinoleate (PGPR) efficiently emulsifies water to form a stable and uniformly dispersed W/O emulsion. The emulsion viscosity can be continuously tuned from low to high by varying the water-to-oil volume ratio from 1:1 to 9:1. The finally formed W/O HIPEs exhibit high viscosity (1829 mPa·s), strong viscoelasticity (tan δ = 0.19), and excellent coalescence stability (no phase separation over 30 days) at 60 °C, making them suitable for water control in EOR application. The key role of POOC + PGPR composite surfactant in the formation and stabilization of emulsions was elucidated using diffusion-ordered 1H NMR (DOSY) spectrogram and molecular dynamics simulations.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"314 ","pages":"Article 121809"},"PeriodicalIF":4.1,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143920607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cesium doping strategy boosts perovskite type bifunctional oxygen electrocatalyst toward efficient and durable rechargeable zinc-air batteries 铯掺杂策略将钙钛矿型双功能氧电催化剂推向高效、耐用的可充电锌空气电池

IF 4.7 2区工程技术

Chemical Engineering Science Pub Date : 2025-05-08 DOI: 10.1016/j.ces.2025.121820

Jian Zhou, Tong Liu, Xueling Lei, Dong Zhang, Yao Luo, Ronghua Yuan, Yao Wang

{"title":"Cesium doping strategy boosts perovskite type bifunctional oxygen electrocatalyst toward efficient and durable rechargeable zinc-air batteries","authors":"Jian Zhou, Tong Liu, Xueling Lei, Dong Zhang, Yao Luo, Ronghua Yuan, Yao Wang","doi":"10.1016/j.ces.2025.121820","DOIUrl":"https://doi.org/10.1016/j.ces.2025.121820","url":null,"abstract":"Cesium doping in SrCo0.9Nb0.1O3-δ material induces the lattice expansion, the increased oxygen vacancies concentration and high-value cations. Amongst, Sr0.9Cs0.1Co0.9Nb0.1O3-δ (SCCN) catalyst displays an outstanding electrocatalytic activities with a large half-wave potential of 0.695 V, a small overpotential of 460 mV, and excellent catalytic stability. The zinc-air battery assembled with SCCN cathode presented high specific capacity of 740 mAh g−1 and maximum output power density of 156 mW cm−2 as well as good charge–discharge cycle stability. Density functional theory (DFT) calculation demonstrates that Cs doping could greatly reduce the formation energy of oxygen vacancies and the adsorption energy of H2O and O2 molecules simultaneously, which accelerates the oxygen reaction processes in the alkaline environment. Our findings indicate that A-site Cs doping could efficiently regulate the electrocatalytic activities of perovskite catalysts, and effectively construct non-noble electrocatalysts with boosted electrocatalytic activity for other energy conversion and storage devices.","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"25 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143926929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prediction of condensation shock in supersonic nozzle: Comparison between high-pressure and low-pressure conditions at different of superheating degree 超声速喷管冷凝水激波预测：不同过热度下高压与低压工况的比较

IF 4.7 2区工程技术

Chemical Engineering Science Pub Date : 2025-05-08 DOI: 10.1016/j.ces.2025.121818

Yanyu Zhang, Fengrong Liu, Shanshan Liu, Huijie Zhang

{"title":"Prediction of condensation shock in supersonic nozzle: Comparison between high-pressure and low-pressure conditions at different of superheating degree","authors":"Yanyu Zhang, Fengrong Liu, Shanshan Liu, Huijie Zhang","doi":"10.1016/j.ces.2025.121818","DOIUrl":"https://doi.org/10.1016/j.ces.2025.121818","url":null,"abstract":"The expansive superheated region, characterized by a broad pressure spectrum, presents a significant challenge in industrial equipment design. To address this, we investigate non-equilibrium condensation (NQC) phenomena in a supersonic nozzle across a wide range of pressures and degrees of superheat. Our results reveal marked disparities in flow behavior between high- and low-pressure conditions within this region. Entropy generation reaches a maximum at a particular superheat level, and frictional losses constitute the primary contributor to entropy generation within the superheated region. The position and intensity of the condensation shock are sensitive to fluctuations in stagnation pressure and degree of superheat. Importantly, in saturated and high-pressure regimes, the flow remains free of condensation shocks. Under low-pressure conditions, mass flow rate exhibits a negative correlation with increasing superheat. In contrast, at high pressures, the relationship is non-monotonic, characterized by an initial rise followed by a decline as superheat levels elevate. The low-pressure flow is characterized by elevated supersaturation ratios and droplet number densities relative to the high-pressure flow. Imposing a 50-degree superheat results in a significant reduction of outlet liquid mass fraction (LMF), with approximately 95% and 63% decreases observed for low- and high-pressure flows, respectively.","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"12 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143926933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic integration of internal gradient-doping and external coating for superior performance in lithium-rich Mn-based cathodes 内部梯度掺杂与外部涂层协同集成，实现富锂锰基阴极的优异性能

IF 4.1 2区工程技术

Chemical Engineering Science Pub Date : 2025-05-08 DOI: 10.1016/j.ces.2025.121819

Ming Jiang , Hai Zhang , Fan Wang , Ze Zhang , Zhenyu Yang

{"title":"Synergistic integration of internal gradient-doping and external coating for superior performance in lithium-rich Mn-based cathodes","authors":"Ming Jiang , Hai Zhang , Fan Wang , Ze Zhang , Zhenyu Yang","doi":"10.1016/j.ces.2025.121819","DOIUrl":"10.1016/j.ces.2025.121819","url":null,"abstract":"<div><div>Key obstacles to commercializing lithium-rich manganese-based cathodes (LRMs) include voltage decline and capacity loss due to irreversible structural damage. The integration of structural design with surface modification to enhance structural stability represents the optimal choice for addressing these challenges. Here, an H+/Li+ exchange interface treatment and subsequent thermally driven process achieves external LiMgPO4 coating and internal gradient Mg doping of LRMs. The “pillars effect” achieved through Mg doping reduce the irreversible oxygen release and inhibits the migration of transition metals, and the LiMgPO4 coating layer mitigates interfacial reactions. As a result, the dual-form incorporation of Mg components, synergistically enhances the electrochemical performance of LRMs for Li-ion batteries. The modified sample exhibits an improved capacity retention from 68.8 % to 85.3 % after 250 cycles compared to the pristine LRMs, and demonstrates a high specific discharge capacity of 155.8mAh g−1 at 5C. This work provides a valuable new idea for improving the comprehensive electrochemical performance of LRMs through a synergistic integration strategy that encompasses both internal doping and external coating factors of Mg components.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"314 ","pages":"Article 121819"},"PeriodicalIF":4.1,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143926931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of ultrasonication on sludge characteristics: Aerobic granular sludge versus waste activated sludge 超声对污泥特性的影响：好氧颗粒污泥与废活性污泥

IF 4.7 2区工程技术

Chemical Engineering Science Pub Date : 2025-05-08 DOI: 10.1016/j.ces.2025.121813

Sadiye Kosar, Amr Mustafa Abdelrahman, Oguz Orhun Teber, Hale Ozgun, Mustafa Evren Ersahin

{"title":"Impact of ultrasonication on sludge characteristics: Aerobic granular sludge versus waste activated sludge","authors":"Sadiye Kosar, Amr Mustafa Abdelrahman, Oguz Orhun Teber, Hale Ozgun, Mustafa Evren Ersahin","doi":"10.1016/j.ces.2025.121813","DOIUrl":"https://doi.org/10.1016/j.ces.2025.121813","url":null,"abstract":"The aerobic granular sludge (AGS) process is a promising wastewater treatment technology that is considered as an alternative to the conventional activated sludge (CAS) process. Due to poor hydrolysis, sludge produced by AGS processes has low digestibility resulting in a decrease in energy recovery. Therefore, pretreatment methods such as ultrasonication, can be used to accelerate hydrolysis, and improve solubilization and anaerobic digestibility. The purpose of this study was to determine the effect of ultrasonication pretreatment on AGS in comparison to waste activated sludge (WAS). Two different intensities (50 W and 100 W) were applied to AGS and WAS and the release of organic compounds, phosphorus, ammonium, and heavy metals were to the supernatant were observed. Volatile fatty acids and proteins were the most abundant organic compounds released from AGS and WAS samples, respectively. Phosphorus release in AGS (5.68 ± 1.14 %) was lower than WAS (10.48 ± 0.23 %) at 100 W ultrasonication intensity. Similarly, release of ammonium in AGS (10.30 ± 0.03 %) was less than WAS (14.05 ± 0.01 %). Release of heavy metals showed a similar trend for both sludge samples, increasing with higher ultrasonication intensity. This correlation has been confirmed by Pearson’s correlation coefficient analysis. Ultrasonication pretreatment improved the sludge disintegration more in AGS than WAS which can lead to enhancement of AGS digestibility.","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"16 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143920750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0