Article
Engineering, Chemical
Shuangli Li, Shiqi Li, Nuan Wen, Dong Wei, Yongfang Zhang
Summary: The bifunctionalized magnetic mesoporous silica material, NZVI-SH-HMS, successfully synthesized with thiol and nanometer zero-valent iron was effective in removing lead and cadmium ions from aqueous solution. The material demonstrated good porous properties, high adsorption capacity, and excellent adsorption performance in different simulated wastewater, indicating promising capabilities for heavy metal ion removal in actual water environments.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Titus Chinedu Egbosiuba, Michael Chika Egwunyenga, Jimoh Oladejo Tijani, Saheed Mustapha, Ambali Saka Abdulkareem, Abdulsalami Sanni Kovo, Vida Krikstolaityte, Andrei Veksha, Michal Wagner, Grzegorz Lisak
Summary: Nickel nanoparticles supported on activated multi-walled carbon nanotubes were used as an efficient adsorbent for the removal of Pb(II), As(V), and Cd(II) from industrial wastewater. The nanocomposite showed enhanced adsorption capacity and good recycling performance, making it a promising candidate for wastewater treatment applications.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Review
Chemistry, Applied
Ayodele Akinterinwa, Usaku Reuben, Jamila Umar Atiku, Mustapha Adamu
Summary: Lead and cadmium, typical heavy metals, pose environmental and health risks when discharged indiscriminately. Starch derivatives adsorbents (SDAs) offer an economical and sustainable water treatment technique for removing heavy metal ions from water.
CARBOHYDRATE POLYMERS
(2022)
Article
Chemistry, Multidisciplinary
Hannah Namkoong, Erik Biehler, Gon Namkoong, Tarek M. Abdel-Fattah
Summary: This study explores a new method of efficiently removing Pb(II) ions from water by using Undaria pinnatifida to create immobilized beads with sodium alginate and calcium chloride. The resulting biosorbent has a higher adsorption capacity for Pb(II) ions compared to activated carbon, indicating its superior removal capability. The research also suggests that an increase in temperature promotes the biosorption reaction of Pb(II) ions.
Article
Environmental Sciences
Meichen Wang, Gopal Bera, Kusumica Mitra, Terry L. Wade, Anthony H. Knap, Timothy D. Phillips
Summary: The study demonstrated that medical grade activated carbon and acid processed montmorillonite clay have strong adsorption capabilities for heavy metals, and can prevent toxicity in a simulated gastrointestinal tract. In vivo experiments showed that medical grade activated carbon effectively protected Hydra vulgaris from the impacts of heavy metals, exhibiting good safety and protective effects.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Zhen Zhang, Tao Wang, Huixue Zhang, Yonghong Liu, Baoshan Xing
Summary: Magnetized activated carbons (MAC) prepared from rape straw powder showed high adsorption capacities for Pb(II) and Cd(II) due to surface active points, with adsorption behavior conforming to the Freundlich model and pseudo-second-order kinetic model. Thermodynamic parameters indicated spontaneous and endothermic reactions. Adjusting the pH of the solution could enhance adsorption capacity, but competitive adsorption occurred in the presence of high-valent ions. Adsorption mechanisms included electrostatic attraction, surface complexation, and co-precipitation. The MAC material showed potential for heavy metal ion removal from aqueous solutions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Shiv Bolan, Balaji Seshadri, Ian Grainge, Nicholas J. Talley, Ravi Naidu
Summary: This study investigated the impact of gut microbes on the bioaccessibility of lead in soil, finding that gut microbes can decrease the bioaccessibility of lead, particularly at low pH values. Additionally, the study revealed that lead adsorption by gut microbes increased at higher pH levels, with Escherichia coli adsorbing more lead than Lactobacillus species.
Article
Environmental Sciences
Regiane D. F. Rios, Patricia J. B. Bueno, Julio C. S. Terra, Flavia C. C. Moura
Summary: Adsorption on activated carbon derived from macauba palm waste was used to remove Zn, Cd, and Pb ions from aqueous solutions. The adsorbents exhibited high adsorption capacities and could be reused multiple times. Surface modification of the activated carbon facilitated its use, recovery, and reuse.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Guangdou Qi, Zhifei Pan, Xueyang Zhang, Shuaishuai Chang, Hongbo Wang, Min Wang, Wei Xiang, Bin Gao
Summary: Microwave biochar produced with activated carbon catalyst shows excellent potential in removing heavy metals from waste water due to its high specific surface area and adsorption capacity. The optimum pH value for heavy metal removal is between 5-6, and Pb2+ exhibits the strongest affinity. The adsorption process is mainly explained by monolayer adsorption and chemical adsorption mechanisms. Complexation with oxygen-containing functional groups and precipitation with carbonate are the predominant adsorption mechanisms.
ENVIRONMENTAL RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Lubna Jaber, Ihsanullah Ihsanullah, Ismail W. Almanassra, Sumina Namboorimadathil Backer, Alaa Abushawish, Abdelrahman K. A. Khalil, Hussain Alawadhi, Abdallah Shanableh, Muataz Ali Atieh
Summary: In this study, a low-cost Fe2O3 nanoparticle doped granular activated carbon (Fe-GAC) was prepared and used for the removal of lead and chromium ions from water. Fe-GAC 5 showed a maximum adsorption capacity of 11.9 mg g(-1) for Pb(II) and 22.1 mg g(-1) for Cr(T). Fe-GAC 5 can be regenerated and reused using 1.0 M HCl. It effectively reduced heavy metal loading in actual brackish water.
Article
Environmental Sciences
Zuxiang Wu, Huan Hu, Chenxi Wang, Ji Wu, Yurong Xiong, Yang Fu, Xiaoshu Cheng, Hai Su, Ping Li
Summary: The study found a negative correlation between serum folate concentration and blood levels of cadmium and lead, with a more stable association in adults with higher estimated glomerular filtration rate. Further research is needed to explore the mechanisms behind the beneficial role of folate in regulating cadmium and lead concentrations in the blood.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Environmental Sciences
Md Saif Hasan, Aneek Krishna Karmakar
Summary: Spent automobile batteries are a significant source of harmful heavy metals for the environment, and activated carbons have been proven effective in treating these metals. This review provides a comprehensive overview of the application of activated carbons in adsorbing heavy metals from spent car batteries in aquatic systems, discussing their preparation, adsorption mechanisms, and future research recommendations.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Michal Zielina, Andrzej Bielski, Anna Mlynska
Summary: This paper proposes a mathematical model for the leaching of heavy metals from the inner cement lining of water pipes into flowing water, taking sorption into account. Experimental verification shows good agreement between calculated and measured results. The study emphasizes the importance of periodic water changes in laboratory experiments to accurately describe the release of contaminants from the cement coating.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Analytical
Dongpeng Mao, Penghu Duan, Yunxian Piao
Summary: A simple and eco-friendly electrochemical activation method was successfully developed for the highly efficient detection of toxic heavy metals lead and cadmium in the environment. By activating the glassy carbon electrode, the electron transfer ability was significantly enhanced. Under optimal conditions, this method could simultaneously detect Cd2+ and Pb2+ with high sensitivity and a wide linear concentration range. The analysis of real water samples demonstrated the promising applicability of this method.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Environmental Sciences
Rahim Shahrokhi-Shahraki, Chelsea Benally, Mohamed Gamal El-Din, Junboum Park
Summary: Activated carbon derived from waste tires exhibited higher adsorption capacities for heavy metal ions than commercial activated carbon, with electrostatic attraction and surface complexation being the dominant mechanisms. In contrast, commercial activated carbon primarily relied on ion exchange for heavy metal removal.
Article
Chemistry, Applied
Kazuki Kino, Tomoyoshi Sakamoto, Jinghan Yuan, Yoshimasa Amano, Motoi Machida
Summary: Quaternary nitrogen functionalized porous carbon derived from thermally stabilized polyacrylonitrile fiber showed excellent performance in removing nitrate anion from water, with an adsorption capacity of 0.6 mmol/g or more in the pH range of 3-8. The presence of equivalent N-Q sites on the carbon surface contributed to the adsorption performance, which was comparable to ion-exchange resin.
Article
Environmental Sciences
Yukiyoshi Tsuchiya, Yusuke Yamaya, Yoshimasa Amano, Motoi Machida
Summary: In this study, two types of activated carbon fibers with different amounts of quaternary nitrogen were prepared by activation and heat treatment. It was found that C-? sites played a significant role in nitrate adsorption, while N-Q was the dominant adsorption site. An increase in N-Q content could enhance the adsorption rate.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Marine & Freshwater Biology
Jingnan Li, Yoshimasa Amano, Motoi Machida
Summary: This study investigates the temperature-related growth characteristics of Microcystis sp. and Cyclotella meneghiniana, and their interspecific competition. The experiments show that Cyclotella meneghiniana is more sensitive to temperature changes compared to Microcystis sp. The influence of temperature on their interaction is verified through cocultivation experiments at different temperatures. The study also discusses the effect of temperature on Microcystis blooms formation.
Article
Environmental Sciences
F. Matsuzawa, Y. Amano, M. Machida
Summary: In this study, an activated carbon with excellent adsorption of phosphate ions was prepared by activating polyacrylonitrile-based carbon fibers and heat-treating them to convert nitrogen species for improved adsorption. The results showed that the phosphate ion adsorption increased with the proportion of N-Q in total nitrogen species, indicating promising adsorption properties for practical applications in environmental water bodies.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jingnan Li, Masato Chujo, Yoshimasa Amano, Motoi Machida
Summary: The study utilized a competitive growth simulation model and experimental results to find that a dilution rate of over 13.3% can effectively suppress Microcystis blooms in lakes under limited phosphorus and sufficient nitrogen conditions. The effectiveness of this approach was confirmed by comparing predicted data with actual data collected over years in Lake Tega, Japan.
Article
Environmental Sciences
Jinghan Yuan, Yoshimasa Amano, Motoi Machida
Summary: An efficient biomass (bamboo) activated carbon was developed by ZnCl2 activation, and the surface structure was optimized using thermal chemical vapor deposition, resulting in high adsorption capacity for nitrate ions and maximum nitrate adsorption capacity of 0.57 mmol/g.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH
(2022)
Article
Multidisciplinary Sciences
Natsuho Sato, Yoshimasa Amano, Motoi Machida
Summary: This study focuses on preparing activated carbon fiber through activation and heat treatment, and investigates its adsorption capacity and characteristics towards nitrate ions. The results show that heat treatment leads to a decrease in nitrogen content, an increase in quaternary nitrogen content, and storage conditions also affect the adsorption capacity of activated carbon.
SN APPLIED SCIENCES
(2022)
Article
Plant Sciences
Thoriq Teja Samudra, Hiroaki Takahashi, Yoshimasa Amano, Motoi Machida
Summary: Cyanobacterial blooms, which are a well-known problem in the aquatic environment, have become more frequent due to global warming. Microcystis, a dominant and widespread genus of bloom-forming cyanobacteria, has the ability to control its buoyancy. A buoyancy experiment conducted on Microcystis revealed that its buoyancy can be controlled by preculturing it in dark conditions for 96 hours and adding powdered tightly bound extracellular polysaccharides (TB-EPS) and metal cations (Ca2+ and Mg2+). This study provides a novel method for controlling and removing cyanobacterial blooms dominated by Microcystis, especially in water treatment facilities.
EUROPEAN JOURNAL OF PHYCOLOGY
(2023)
Article
Engineering, Multidisciplinary
Motoi Machida, Yukiyoshi Tsuchiya, Jinghan Yuan, Yoshimasa Amano
Summary: A thermally stabilized polyacrylonitrile (PAN) fiber activated with sodium carbonate was studied for nitrate adsorption in aqueous solution. The sample treated at 950 degrees C showed stable high adsorption capacity in a wide pH range due to the exposure of positively charged graphitic N-Q species. Nitrogen adsorption-desorption and elemental analysis were conducted to examine the sample's textural properties and nitrogen-oxygen content.
RESULTS IN ENGINEERING
(2021)
Meeting Abstract
Chemistry, Physical
Tatsuru Goto, Yoshimasa Amano, Motoi Machida
Meeting Abstract
Chemistry, Physical
Kunio Miyazawa, Kazuhiro Yoshimura, Yoshimasa Amano, Motoi Machida, Fumio Imazeki
Meeting Abstract
Chemistry, Physical
Tomoyoshi Sakamoto, Muhammad Abbas Ahmad Zaini, Yoshimasa Amano, Motoi Machida
Meeting Abstract
Chemistry, Physical
Kazumasa Sato, Kazuhiko Hagiwara, Katsuya Watanabe, Mutsumi Kato, Yoshimasa Amano, Motoi Machida
Proceedings Paper
Materials Science, Multidisciplinary
Muhammad Abbas Ahmad Zaini, Lee Lin Zhi, Tang Shu Hui, Yoshimasa Amano, Motoi Machida
Summary: Fiber-based activated carbons prepared through steam activation exhibit high specific surface area and microporous structure, enabling effective removal of heavy metals such as copper and lead.
MATERIALS TODAY-PROCEEDINGS
(2021)
Article
Engineering, Environmental
Masato Chujo, Jingnan Li, Tania Datta, Yoshimasa Amano, Motoi Machida
Summary: A novel competitive growth model between Microcystis sp. and Cyclotella meneghiniana was developed to predict cyanobacterial growth patterns under different nutrient conditions. The study revealed the decisive factors influencing the suppression of cyanobacterial blooms and offered insights into nutrient management strategies for bloom control.
ENVIRONMENTAL ENGINEERING SCIENCE
(2021)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)
