Advanced Powder Technology最新文献_第10页

A time-domain nuclear magnetic resonance (TD-NMR) as a tool to characterize affinity between partially hydrophobic silica nanoparticles and ethanol/hexane mixtures 将时域核磁共振（TD-NMR）作为表征部分疏水性二氧化硅纳米颗粒与乙醇/正己烷混合物之间亲和力的工具

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-08-05 DOI: 10.1016/j.apt.2024.104593

Atsushi Teramae , Chika Takai-Yamashita , Junko Ikeda , Seiji Yamashita , Motoya Sugiura , Ariga Kato , Yutaka Ohya , Paul Kinyanjui Kimani

{"title":"A time-domain nuclear magnetic resonance (TD-NMR) as a tool to characterize affinity between partially hydrophobic silica nanoparticles and ethanol/hexane mixtures","authors":"Atsushi Teramae , Chika Takai-Yamashita , Junko Ikeda , Seiji Yamashita , Motoya Sugiura , Ariga Kato , Yutaka Ohya , Paul Kinyanjui Kimani","doi":"10.1016/j.apt.2024.104593","DOIUrl":"10.1016/j.apt.2024.104593","url":null,"abstract":"<div>Affinity between partially hydrophobic silica nanoparticles and organic solvents (ethanol and hexane) as dispersing medium has been characterized with change in the relaxation time obtained by a time-domain nuclear magnetic resonance (TD-NMR). Different chain lengths (denoted as C3, C6, and C12) were utilized as surface modifiers for the particles and the modification ratio was controlled. For ethanol, the longer chain length and higher modification ratio showed the higher affinity while for hexane, vice versa even though a quite poor affinity appeared in whole conditions. We hypothesize that the ethanol molecules could be attracted to residual silanol groups among long-chain length-functional groups. In order to prove, affinity of the partially hydrophobic silica nanoparticles with ethanol/hexane mixture has been investigated. In the range from 60 to 80 vol% of hexane, relaxation time of the C12-modified silica nanoparticles (modification ratio was 1.4 /nm2) quickly decreased. When the residual silanol was additionally modified with C3, the corresponding decrease disappeared. The TD-NMR has an effective tool to detect the change in the surface affinity of the partially hydrophobic nanoparticles even if they showed the same hydrophobicity.</div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 9","pages":"Article 104593"},"PeriodicalIF":4.2,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141950267","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

Parametric and non-parametric evaluation of conversion of number-based particle size distribution to mass-based distribution 将基于数量的粒度分布转换为基于质量的分布的参数和非参数评估

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-08-03 DOI: 10.1016/j.apt.2024.104594

Tatsushi Matsuyama

{"title":"Parametric and non-parametric evaluation of conversion of number-based particle size distribution to mass-based distribution","authors":"Tatsushi Matsuyama","doi":"10.1016/j.apt.2024.104594","DOIUrl":"10.1016/j.apt.2024.104594","url":null,"abstract":"<div>Interest in applying non-parametric methods to analyze particle size distribution (PSD) is growing. Previous studies have demonstrated the effectiveness of the bootstrap method in evaluating percentile values and confidence intervals for number-based PSD data. In this study, the application of the method to mass-based (volume-based) distribution was extended. The performance of the parametric method, which uses the Hatch-Choate equation for lognormal distribution, was compared with that of the non-parametric method in evaluating mass-based distribution data converted from number-based distribution. The superior performance of the parametric method underscores the importance of prior distribution function knowledge. For non-parametric methods, “real repeat” simulations involving 5000 repetitions of individual samplings were conducted as a reference for the bootstrap method. It was found that there exists a critical sample size, beyond which larger samples are necessary to accurately represent the population through non-parametric analysis. This critical size requires that the maximum size in the dataset exceeds the target size (e.g., the 90th percentile value) for direct evaluation of existing data. When the sample size range surpasses the critical size, bootstrap provides a good approximation to the “real repeat” experiments. Therefore, it is essential to have a diagnostic strategy to determine whether the sample size is sufficiently large for non-parametric analysis. A simple method using multi-scale bootstrap is proposed in this regard.</div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 9","pages":"Article 104594"},"PeriodicalIF":4.2,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S092188312400270X/pdfft?md5=4c04d30467bc9bafc10635a5e42637e8&pid=1-s2.0-S092188312400270X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141950266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Removal of deep traps in Lu2O3:Tm phosphors via formation of continuous solid solutions with In2O3 enabling widely tailorable bandgap energy 通过与 In2O3 形成连续固溶体消除 Lu2O3:Tm 荧光粉中的深陷阱，实现广泛的可定制带隙能

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-08-03 DOI: 10.1016/j.apt.2024.104610

Bin Lu , Hanchen Shen , Yun Shi , Jiang Li , Oleg Shichalin , Eugeniy Papynov , Xuejiao Wang

{"title":"Removal of deep traps in Lu2O3:Tm phosphors via formation of continuous solid solutions with In2O3 enabling widely tailorable bandgap energy","authors":"Bin Lu , Hanchen Shen , Yun Shi , Jiang Li , Oleg Shichalin , Eugeniy Papynov , Xuejiao Wang","doi":"10.1016/j.apt.2024.104610","DOIUrl":"10.1016/j.apt.2024.104610","url":null,"abstract":"<div>Bandgap engineering has been effectively used to reduce the shallow-trap defects (e.g. antisite defects), but there are still rare reports on the removal of deep-trap defects (e.g. oxygen defects). In this work, our proposed strategy of In3+ substitution for Lu3+ via the formation of continuous (Lu,In)2O3 solid solutions can be used to widely tailored the bandgap energy. These solid solutions prepared from the chemical co-precipitation route presented the rounded morphology and their particle sizes increased at a higher In3+ content. The (Lu,In)2O3:Tm phosphor powders exhibited characteristic Tm3+ emissions arising from its intra‐4f12 multi‐transitions upon UV excitation into strong broad charge transfer bands. The luminescence intensity reached the highest level at 15 at.% In3+ concentration. The In3+ incorporation was found to red-shift the charge transfer bands and shortened the florescence lifetimes. The luminescence quenching was dominated by exchange interaction while the theoretical and experimental quenching concentration of Tm3+ coincided well with each other (both ∼1 at.%). The trap depth in the In3+ free Lu2O3:Tm phosphor was determined to be ∼0.61 eV and these electron traps could be almost fully buried at the In3+ concentration above 5 at.%. Both the (Lu0.99Tm0.01)2O3 and (Lu0.84In0.15Tm0.01)2O3 phosphors exhibited good thermal stability with high thermal-quenching activation energies (∼0.45 eV for the former and ∼0.39 eV for the latter). However, the (Lu0.99Tm0.01)2O3 phosphor presented abnormal thermal quenching effect.</div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 9","pages":"Article 104610"},"PeriodicalIF":4.2,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141945503","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

A novel interaction theory for the starch adsorption onto hematite surface 赤铁矿表面淀粉吸附的新型相互作用理论

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-08-02 DOI: 10.1016/j.apt.2024.104607

Qianqian Wang , Yanling Xu , Jan Zawała , Chen Liu , Wei Xiao , Siyuan Yang

{"title":"A novel interaction theory for the starch adsorption onto hematite surface","authors":"Qianqian Wang , Yanling Xu , Jan Zawała , Chen Liu , Wei Xiao , Siyuan Yang","doi":"10.1016/j.apt.2024.104607","DOIUrl":"10.1016/j.apt.2024.104607","url":null,"abstract":"<div>Depressant starch (NS) was generally used in hematite flotation, while the adsorption mechanism of the macromolecular polymer onto mineral surfaces remained in question. In this study, novel detection approaches and computational chemistry methods were introduced to update the widely-accepted acid-base interaction theory. Microflotation tests confirm that the hematite flotation recovery was easily depressed by NS under the acid or alkaline conditions rather than the neutral condition. Zeta potential measurement shows that NS could change the zeta potential of hematite, while the shift amplitude ranked as alkaline > acid > neutral, indicating the most suitable pH range is the alkaline condition. XPS analysis reveals that NS could chemisorbed onto Fe atoms of hematite surface via C-O groups in the whole studied pH range. It was further verified using AFM tests, in which the NS has a stronger interaction force under the alkaline environment. MDS further indicates that the interaction energy between NS and the (001) hematite surface was three times greater than others under alkaline conditions. In general, the interaction force at the interface between the hematite surface and NS was a strong chemical adsorption at the alkaline conditions while there was weak chemisorption and hydrogen bonding under the neutral or acidic conditions.</div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 9","pages":"Article 104607"},"PeriodicalIF":4.2,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141951479","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

Full title (Editorial Board Members) 全称（编辑委员会成员）

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-08-01 DOI: 10.1016/S0921-8831(24)00274-7

引用次数: 0

Inside Front Cover (Aims & Scope, Editors) 封面内页（目标与范围，编辑）

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-08-01 DOI: 10.1016/S0921-8831(24)00273-5

引用次数: 0

Performance analysis of vertical stirred mill based on multi-coupling method 基于多耦合方法的立式搅拌磨性能分析

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-07-30 DOI: 10.1016/j.apt.2024.104603

Zhengbin Liu , Shuai Wang , Haoyan Zhang , Zeren Chen , Jianbo Guo , Shuwei Wu , Wei Guan , Pengshu Xie , Qingxue Huang

{"title":"Performance analysis of vertical stirred mill based on multi-coupling method","authors":"Zhengbin Liu , Shuai Wang , Haoyan Zhang , Zeren Chen , Jianbo Guo , Shuwei Wu , Wei Guan , Pengshu Xie , Qingxue Huang","doi":"10.1016/j.apt.2024.104603","DOIUrl":"10.1016/j.apt.2024.104603","url":null,"abstract":"<div>To improve vertical mill performance, a vertical stirred mill is used as the research object. Firstly, an electromechanical multi-body dynamic model (EMBD) of the vertical stirred mill is established, followed by the establishment of a discrete element method (DEM) analysis model of the grinding media, and then the DEM-EMBD coupling model is formed. The feasibility of the DEM-EMBD coupling model is verified through experiments. On this basis, the stress distribution state of the helical agitator is analysed based on the coupling method of the discrete element method and finite element method (DEM-EMBD-FEM). The DEM-EMBD coupling model can better reflect the dynamic characteristics of the vertical stirred mill by comparing it with the DEM model and the coupling method of discrete element method and computational fluid dynamics (DEM-CFD) respectively. Finally, the effects of vertical stirred mill structural parameters, operating parameters and grinding media size on mill performance are investigated by the DEM-EMBD and DEM-EMBD-FEM coupling models. The approach then provides insights into the structural design of vertical stirred mills, motor selection, and the welding process between the helical blades and screw.</div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 9","pages":"Article 104603"},"PeriodicalIF":4.2,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141950282","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

Development of computational model for description of magnetic drug targeting for cancer therapy: Modeling and validation 开发用于描述癌症治疗磁性药物靶向的计算模型：建模与验证

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-07-30 DOI: 10.1016/j.apt.2024.104577

Rami M. Alzhrani , Saad M. Alshahrani , Amal Abdullah Alrashidi

{"title":"Development of computational model for description of magnetic drug targeting for cancer therapy: Modeling and validation","authors":"Rami M. Alzhrani , Saad M. Alshahrani , Amal Abdullah Alrashidi","doi":"10.1016/j.apt.2024.104577","DOIUrl":"10.1016/j.apt.2024.104577","url":null,"abstract":"<div>Computation of blood flow containing ferrofluid would be useful for analysis of drug carrier motion for cancer therapy. A thorough understanding nanoparticles behavior is challenging and needs to be addressed by developing sophisticated theoretical methods. A hybrid modeling for analysis of blood motion containing ferrofluid was implemented via mechanistic modeling combined with artificial intelligence. The system of analysis also considered external magnetic force for control of nanoparticles motion in the blood vessel. This research focuses on the analysis of velocity field based on a dataset consisting of variables x(m), y(m), and U(m/s). The objective is to develop accurate predictive models using Gaussian Process Regression (GPR), Kernel ridge regression (KRR), and Polynomial Regression (PR). The Dragonfly Algorithm (DA) was employed for hyper-parameter optimizing. The results demonstrate the performance of these models in relation to R2 score, RMSE, and MAE. The GPR model achieves the highest score of 0.99603 in terms of R2, indicating excellent predictive accuracy. It also exhibits the lowest RMSE of 7.1443x10^-3 and MAE of 5.35436 x10^-3, suggesting minimal deviations between the expected and predicted velocity values. The PR model also has a significant performance with an R2 test score of 0.99348, RMSE of 9.1376 x10^-3, and MAE of 7.22828 x10^-3. The aforementioned results underscore the effectiveness of these models in accurately forecasting velocity based on the provided input variables.</div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 9","pages":"Article 104577"},"PeriodicalIF":4.2,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141950265","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

Enhancing flotation separation of fine-grained cassiterite and calcite with cetylpyridine bromide as a dispersant 用溴化十六烷基吡啶作为分散剂提高细粒锡石和方解石的浮选分离效果

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-07-30 DOI: 10.1016/j.apt.2024.104606

Jinwen Li , Jinfang Lv , Lingyu Kong , Longqian Ni , Longwei Qin

{"title":"Enhancing flotation separation of fine-grained cassiterite and calcite with cetylpyridine bromide as a dispersant","authors":"Jinwen Li , Jinfang Lv , Lingyu Kong , Longqian Ni , Longwei Qin","doi":"10.1016/j.apt.2024.104606","DOIUrl":"10.1016/j.apt.2024.104606","url":null,"abstract":"<div>Calcite is a common gangue mineral in tin ore, which seriously affects the flotation of fine-grained cassiterite. The enhanced flotation separation of fine-grained cassiterite and calcite with cetylpyridine bromide (CPB) as a dispersant were investigated in the study. The CPB significantly improved the flotation separation efficiency of fine-grained cassiterite and calcite, and it exhibited an excellent dispersion effect and relieved the coating phenomenon of calcite particles on the surface of cassiterite particles. The CPB changed the surface potential of cassiterite from negative value to positive value when the pH was in the range of 3.4–11.5. However, regardless of treatment with CPB, the surface potential of calcite was positive when the pH was below 11.5. The O on the surface of cassiterite reacted with CPB, promoting the chemical adsorption of CPB on the surface of cassiterite. There was weak physical adsorption between CPB and calcite. The covering between cassiterite and calcite without CPB was mainly dependent on van der Waals interaction energy and electrostatic interaction energy. When CPB was in the presence, cassiterite and calcite were repelled by the hydrophobic interaction energy and electrostatic interaction energy.</div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 9","pages":"Article 104606"},"PeriodicalIF":4.2,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141950283","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

Influence of carboxymethyl chitosan on selective flotation separation of smithsonite from calcite with sodium oleate 羧甲基壳聚糖对利用油酸钠从方解石中选择性浮选分离铁燧岩的影响

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2024-07-30 DOI: 10.1016/j.apt.2024.104604

Anmei Yu , Zhan Ding , Jiaqiao Yuan , Pan Yu , Li Chen , Yijie Zhang , Shuming Wen , Shaojun Bai

{"title":"Influence of carboxymethyl chitosan on selective flotation separation of smithsonite from calcite with sodium oleate","authors":"Anmei Yu , Zhan Ding , Jiaqiao Yuan , Pan Yu , Li Chen , Yijie Zhang , Shuming Wen , Shaojun Bai","doi":"10.1016/j.apt.2024.104604","DOIUrl":"10.1016/j.apt.2024.104604","url":null,"abstract":"<div>Addressing the persistent challenge of separating smithsonite from calcite using flotation method, this study explores the impact of carboxymethyl chitosan (CMCS) on selective separation using sodium oleate (NaOL) assisted flotation. Results indicated a substantial reduction in calcite recovery to 2.25 % with the addition of 40 mg/L CMCS at pH 9, while recovery of smithsonite remained essentially unchanged at 94.78 %. Moreover, we found that using CMCS as the depressant can effectively separate smithsonite from calcite, based on the flotation testing results with artificially mixed minerals. Contact angle tests results showed that CMCS can significantly lower the surface hydrophobicity of calcite without any negative effect on that of smithsonite when using NaOL as a collector. TOC, FTIR, AFM, and ToF-SIMS analyses demonstrated stronger adsorption of CMCS on the surface of calcite compared to smithsonite. XPS data, solution chemical analysis and DFT revealed interaction between –COO- in CMCS with Ca sites on the surface of calcite because of the electrostatic adsorption and chemical adsorption, forming −COOCa. It leaded to shielding effects on the NaOL adsorption stemming, which makes NaOL more adsorbed on smithsonite surface.</div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 9","pages":"Article 104604"},"PeriodicalIF":4.2,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141950284","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