Journal of Metals, Materials and Minerals最新文献_第2页

Green synthesis of bimetallic CuO@NiO nanocomposite for the removal of glyphosate 去除草甘膦的双金属 CuO@NiO 纳米复合材料的绿色合成

Journal of Metals, Materials and Minerals Pub Date : 2024-03-19 DOI: 10.55713/jmmm.v34i1.1931

K. Boonserm, Anan Sutcha, Rarm Phinjaroenphan

引用次数: 0

Photoluminescent carbon nanodots for artificial photosynthesis 用于人工光合作用的光致发光碳纳米点

Journal of Metals, Materials and Minerals Pub Date : 2024-03-19 DOI: 10.55713/jmmm.v34i1.1824

Rajie A. Medina, Michael E. Franco, L. M. De Juan‐Corpuz, Ryan D. Corpuz

{"title":"Photoluminescent carbon nanodots for artificial photosynthesis","authors":"Rajie A. Medina, Michael E. Franco, L. M. De Juan‐Corpuz, Ryan D. Corpuz","doi":"10.55713/jmmm.v34i1.1824","DOIUrl":"https://doi.org/10.55713/jmmm.v34i1.1824","url":null,"abstract":"The emerging field of carbon dots (CDs), a type of carbon nanostructure that has gained significant attention due to its unique properties and potential applications. CDs possess remarkable attributes, including photoluminescence, electrochemical potential, compatibility with living organisms, solubility in water, chemical stability, and versatile surface properties. The chemical structure, particle size, and surface functionalities of CDs all have an impact on their photoluminescent properties, which are the focus of this review. The photoluminescence mechanism in CDs is discussed, highlighting their amorphous structure, and comparing them to graphene quantum dots. The paper delves into the application of CDs in artificial photosynthesis, which enhances crop growth by improving the photo-synthesis process. CDs increase sunlight and carbon dioxide absorption rates by interacting with plant leaves, potentially leading to substantial crop yield improvements. The advantages of CDs in artificial photosynthesis are explored, including their modifiable absorption characteristics across the ultraviolet to near-infrared spectrum. The paper acknowledges challenges in CD production, such as size control and aggregation, while emphasizing their potential in various fields, including sensing, bioimaging, energy devices, and catalysis. CDs' unique optical properties and versatile applications suggest a promising future for these nanostructures in numerous scientific and technological domains.","PeriodicalId":502897,"journal":{"name":"Journal of Metals, Materials and Minerals","volume":"52 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140231318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Atmospheric hydrochloric and nitric acid leaching of a limonite ore from the Wolo mine area, Southeast Sulawesi, Indonesia 印度尼西亚东南苏拉威西 Wolo 矿区褐铁矿石的常压盐酸和硝酸浸出过程

Journal of Metals, Materials and Minerals Pub Date : 2024-03-19 DOI: 10.55713/jmmm.v34i1.1875

Sufriadin, Malyanus Yepta, I. Nur, Purwanto, Rizky Amalia, U. R. Irfan, Djabal Nur Basir, Tsubasa Otake

{"title":"Atmospheric hydrochloric and nitric acid leaching of a limonite ore from the Wolo mine area, Southeast Sulawesi, Indonesia","authors":"Sufriadin, Malyanus Yepta, I. Nur, Purwanto, Rizky Amalia, U. R. Irfan, Djabal Nur Basir, Tsubasa Otake","doi":"10.55713/jmmm.v34i1.1875","DOIUrl":"https://doi.org/10.55713/jmmm.v34i1.1875","url":null,"abstract":"The atmospheric acid leaching studies of a limonite ore sample from the Wolo mine area, Southeast Sulawesi, Indonesia, have been performed using hydrochloric acid (HCl) and nitric acid (HNO3). The objectives of these studies were to compare the leaching degree of metals (Ni, Co, Fe, and Al) and to analyze the dissolution behavior of minerals under different acid concentrations. Mineralogical characterization of the ore sample was conducted using optical microscopy, scanning electron microscopy (SEM), and X-ray diffraction, whereas chemical composition was determined by X-ray fluorescence (XRF) spectrometry and atomic absorption spectroscopy (AAS), respectively. An atmospheric leaching test was done with the variables of acid concentration, leaching duration of 90 min, and leaching temperature of 100℃. Limonite ore samples contain goethite, gibbsite, talc, quartz, and lizardite. It was revealed that as much as 92.22% of Ni and 90.14% of Fe could be leached using 3 M HCl, whereas only 63.14% of Ni and 38.74% of Fe could be extracted from limonite ore using 3 M HNO3. The higher leaching degree of Fe in HCl indicates low selectivity with Ni, which might contaminate pregnant leach solution (PLS), leading to further complications in the purification process. Results of the leaching experiment show that goethite was more easily dissolved in HCl than in HNO3.","PeriodicalId":502897,"journal":{"name":"Journal of Metals, Materials and Minerals","volume":"33 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140230349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hot corrosion behavior of Mg(_{2})SiO(_{4}) ceramic exposed to molten Na(_{2})SO(_{4}) at 900℃ to 1100℃ Mg （_{2}）SiO （_{4}）陶瓷在900℃至1100℃下暴露于熔融 Na （_{2}）SO （_{4}）的热腐蚀行为

Journal of Metals, Materials and Minerals Pub Date : 2024-03-19 DOI: 10.55713/jmmm.v34i1.1777

Hamza Milles, Louafi Snani, Amel Oulabbas, Khaled Toualbia

引用次数: 0

Possibility of using boric acid and glutinous rice flour as additive for producing silicon carbide ceramic via pressureless solid-state sintering 使用硼酸和糯米粉作为添加剂通过无压固态烧结法生产碳化硅陶瓷的可能性

Journal of Metals, Materials and Minerals Pub Date : 2024-03-19 DOI: 10.55713/jmmm.v34i1.1939

A. Jinnapat, Auamporn Rattanasing, Nithiwach Nawaukkaratharnant, Kritkeaw Somton, K. Dateraksa

引用次数: 0

The effects of copper on the mechanical properties of Ti-10Mo alloy prepared by powder metallurgy method 铜对粉末冶金法制备的 Ti-10Mo 合金机械性能的影响

Journal of Metals, Materials and Minerals Pub Date : 2024-02-02 DOI: 10.55713/jmmm.v34i1.1813

A. A. Kharisma, H. Rudianto, Achmad Benny Mutiara, Sulistyo Puspitodjati, F. Latief, A. Wismogroho, W. Widayatno, Didik Aryanto, C. Firdharini

{"title":"The effects of copper on the mechanical properties of Ti-10Mo alloy prepared by powder metallurgy method","authors":"A. A. Kharisma, H. Rudianto, Achmad Benny Mutiara, Sulistyo Puspitodjati, F. Latief, A. Wismogroho, W. Widayatno, Didik Aryanto, C. Firdharini","doi":"10.55713/jmmm.v34i1.1813","DOIUrl":"https://doi.org/10.55713/jmmm.v34i1.1813","url":null,"abstract":"Titanium alloys are currently widely explored and produced for applications in various engineering fields. Alloying metal elements such as Mo, Cu, and Mn bring more advantages among them to help improve the mechanical properties of titanium alloys. This study is intended for the evaluation of mechanical properties through compression and hardness testing performed on a Ti-10Mo alloy with copper addition by powder metallurgy. Ti-10Mo alloys with the addition of copper contents of 3 wt% Cu, 6 wt% Cu, and 9 wt% Cu were prepared to optimize the properties of Ti-10Mo-xCu alloys. With the addition of 3 wt% copper, the compressive strength increased to 577 MPa, which is the maximum compressive strength in this study. On the other hand, with 6 wt% and 9 wt% Cu addition, the compressive strength became 140 MPa and 201 MPa, respectively. A Ti-10Mo alloy with a 3 wt% copper content was able to achieve the maximum hardness of 576 HV. In short, the addition of 3 wt% copper successfully increased the compressive strength as well as the hardness of the prepared titanium alloys.","PeriodicalId":502897,"journal":{"name":"Journal of Metals, Materials and Minerals","volume":"63 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139683599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A contribution to the exploration of the chemical durability, thermal stability, and structural ability of glasses from the Fe(_{2})O(_{3})-K(_{2})O-MoO(_{3})-P(_{2})O(_{5}) quaternary system 对探索Fe（_{2}）O（_{3}）-K（_{2}）O-MoO（_{3}）-P（_{2}）O（_{5}）四元体系玻璃的化学耐久性、热稳定性和结构能力的贡献

Journal of Metals, Materials and Minerals Pub Date : 2024-01-30 DOI: 10.55713/jmmm.v34i1.1787

A. Er-rafai, Y. Alaoui, M. Laourayed, M. Ounacer, Mouloud El Moudane, Mohammed Sajieddine, Abdelkbir Bellaouchou

引用次数: 0

Incorporating novel bio-mineral materials of silicone-arrowroot modified starch for compressed powder 将新型生物矿物质材料硅-蓍草改性淀粉加入压缩粉中

Journal of Metals, Materials and Minerals Pub Date : 2024-01-30 DOI: 10.55713/jmmm.v34i1.1803

Pirada Sudprasert, Ananthaya Sansawat, Piangkhwan Kruapoo

{"title":"Incorporating novel bio-mineral materials of silicone-arrowroot modified starch for compressed powder","authors":"Pirada Sudprasert, Ananthaya Sansawat, Piangkhwan Kruapoo","doi":"10.55713/jmmm.v34i1.1803","DOIUrl":"https://doi.org/10.55713/jmmm.v34i1.1803","url":null,"abstract":"Incorporating novel bio-mineral materials of silicone-arrowroot modified starch (SA) is an environmentally friendly technique to create compressed powder, thereby integrating biodiversity with sustainability and responding to the Bio-Circular-Green (BCG) economy. The SA had improved flowability and water resistance compared with non-modified arrowroot flour (A0), concurring with the Fourier Transform Infrared (FTIR), scanning electron microscope (SEM) analyses that indicated more hydrophobic properties. To investigate the formulated dust and compressed powder, three types of binders including magnesium stearate (Ms), isopropyl myristate (Im), and mineral oil (Mo) were examined. Powder samples of all binders at each concentration gave high water resistance with floating time of more than 15 min and high compressibility at 37.88% ± 0.91% to 42.59% ± 0.28% Carr’s index value and 1.61 ± 0.02 for the Hausner ratio. The hardness was 72.53 g ± 3.25 g to 98.00 g ± 3.78 g and drop test results differed depending on the density and adhesion properties of each formulation. The color stability was acceptable and not statistically significantly different when using different binders. Microbiological analysis of total bacteria count, yeast and mold in the silicone-arrowroot modified starch and pressed powder were <10 CFU∙g–1, while non fecal coliform, fecal coliform, Candida albicans, Staphylococcus aureus, and Clostridium spp. were not found.","PeriodicalId":502897,"journal":{"name":"Journal of Metals, Materials and Minerals","volume":"673 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140482752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

LLDPE film development surface with nucleating agents to reduce fat stains from food adherence on the film surface for easy rinsing before recycling LLDPE 薄膜显影表面含有成核剂，可减少食物附着在薄膜表面造成的油渍，便于回收前冲洗

Journal of Metals, Materials and Minerals Pub Date : 2024-01-29 DOI: 10.55713/jmmm.v34i1.1807

Nattapong Pinpru, Chiranicha Ninthap, Supang Sripraphot, Supharada Khaisaat

{"title":"LLDPE film development surface with nucleating agents to reduce fat stains from food adherence on the film surface for easy rinsing before recycling","authors":"Nattapong Pinpru, Chiranicha Ninthap, Supang Sripraphot, Supharada Khaisaat","doi":"10.55713/jmmm.v34i1.1807","DOIUrl":"https://doi.org/10.55713/jmmm.v34i1.1807","url":null,"abstract":"The purpose of this research was to enhance the surface of linear low-density polyethylene (LLDPE) film by using single and hybrid nucleating agents to reduce fat stains from food adherence on the film surface for easy rinsing before recycling, consequently reducing energy consumption before recycling. The process begins with the preparation of a high-concentration masterbatch of LLDPE with nucleating agents and polyethylene glycol (PEG), followed by blown film and test analysis. The results showed that both single and hybrid nucleating agents resulted in substantial modifications in the surface characteristics of the film. The altered surface texture of the film makes fat stains easy to remove. In addition, the use of hybrid nucleating agents resulted in considerable roughness on the film's surface. It can calculate the average roughness (Ra) from atomic force microscopy (AFM) images, which is very low at 4.7 nm, and the roughness is consistent. The contact angle was 99.17 degrees, and the percentage of crystallinity was clearly higher than that of a single nucleating agent. As a result, the fat stains on the film surface are easier to remove. The visual appearance, morphology, functional group, and mechanical properties of the films, on the other hand, were not significantly different. In summary, using a nucleating agent helped to rinse fat stains from the film easily.","PeriodicalId":502897,"journal":{"name":"Journal of Metals, Materials and Minerals","volume":"19 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140488341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0