Article
Engineering, Environmental
Shahid Saqlain, Shufang Zhao, Soong Yeon Kim, Young Dok Kim
Summary: The study showed that pre-treating activated carbon with HNO3 can enhance toluene removal efficiency under light exposure. Shorter wavelengths of visible light were more effective in toluene removal compared to longer wavelengths. Activated carbon can sustain its photocatalytic activity when mixed with cement, indicating its potential applications in airpurifying building materials.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Zhao Jiaqi, Yuan Linjiang, Wang Yang
Summary: This study investigates the removal of ammonia nitrogen with the aid of sulfate in domestic wastewater treatment. The experimental results show that the desired reactions can be achieved in a specific reactor under certain conditions, and the presence of iron ions enhances the efficiency of ammonia removal.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Tihana Cizmar, Ivana Grcic, Mario Bohac, Marta Razum, Luka Pavic, Andreja Gajovic
Summary: This paper emphasized the dual application of Cu-modified vertically aligned TiO2 nanotube arrays as photocatalyst and relative humidity sensor. The sample modified with 2 M Cu(NO3)(2) solution showed the highest efficiency for NH3 photocatalytic degradation and humidity response. XRD, SEM, and EDS were used to investigate the structure and impact of Cu modification, showing that the modified samples had higher NH3 oxidation activity and more pronounced humidity response.
Letter
Materials Science, Multidisciplinary
Xuanang Bian, Yunxuan Zhao, Shuai Zhang, Dong Li, Run Shi, Chao Zhou, Li-Zhu Wu, Tierui Zhang
Summary: The strategy of utilizing Pt-doped Ag nanoparticles supported on TiO2 to improve the supply of activated hydrogen for promoting photocatalytic N-2 fixation has successfully increased NH3 yield, and can be applied to other efficient catalysts for nitrogen fixation.
ACS MATERIALS LETTERS
(2021)
Article
Engineering, Environmental
Song He, Guibin Shi, Huan Xiao, Guoxiang Sun, Yanjuan Shi, Guanyu Chen, Huaming Dai, Bihe Yuan, Xianfeng Chen, Xiaobing Yang
Summary: In this study, lignin-based pitch extracted from black liquor was used as a precursor for synthesizing activated carbon with high specific surface area and pore volume through chemical activation with potassium hydroxide. The optimized activated carbon (PAC-5-850-60) showed excellent adsorption performance for gaseous benzene. The study explored the adsorption behavior and mechanism of PACs, demonstrating their potential as efficient absorbents for removing gaseous benzene.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Brian M. Everhart, Bailey McAuley, Ahmed Al Mayyahi, Bade Tonyali, Umut Yucel, Placidus B. Amama
Summary: Although a majority of photocatalysts exhibit improved NO conversion to NO2, the performance in the oxidation of NO2, the more toxic form of NOx, to nitrate remains a challenge. This study demonstrates the use of carbon nanotube-TiO2 (CNT-TiO2) photocatalyst films for effective transformation of NOx into nitrates. The conditions probed include relative humidity (RH), initial NOx concentration, reactor geometry (headspace distance), and state of the catalyst (fresh vs. recycled). Our findings highlight the importance of headspace distance, a parameter that has mostly been overlooked in reactor design for photocatalytic oxidation of NOx, but which dictates the optimal catalyst configuration for flue gas treatment.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Tingting Du, Guan Zhang, Jing Zou
Summary: This study investigated the effects of photocatalytic and electrochemical oxidation on humic acid and ammonia, with Pt/TiO2 showing improved activity. A simple and effective method was developed to immobilize TiO2 and Pt/TiO2 onto ceramic foam for application. The study also examined the ammonia oxidation pathway through the performance of the RuO2-IrO2/Ti electrode.
Article
Chemistry, Physical
Danlei Wei, Lianqi Huang, Hanying Liang, Junhua Zou, Wenwen Chen, Can Yang, Yidong Hou, Dandan Zheng, Jinshui Zhang
Summary: The study demonstrates that silylated iron vanadate nanorods can serve as promising photocatalysts for directing hydroxylation of benzene to phenol, by utilizing the unique benefits of covalently bonded organosilane groups to achieve kinetic control of heterogeneous photocatalytic reactions.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Sukru Dursun, Zeynep Cansu Ayturan
Summary: Organic air pollutants, including persistent toxic organics and volatile organic compounds (VOC), pose a significant threat to human health. Effective removal of VOC is crucial for environmental protection. Photocatalytic oxidation (PCO) has emerged as a promising technology for VOC removal. In this study, the photocatalytic oxidation method was used to remove benzene and toluene pollutants commonly found in flue gases under UVC irradiation. By adjusting the system parameters, the optimal conditions for simultaneous removal of benzene and toluene were determined to be a temperature of 120 degrees C, humidity of 25%, and 0.5% doping photocatalyst.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
David Maria Tobaldi, Dana Dvoranova, Luc Lajaunie, Kristina Czikhardtova, Bruno Figueiredo, Jose Juan Calvino, Maria Paula Seabra, Joao Antonio Labrincha
Summary: Modern lifestyles result in increased indoor time, negatively impacting health. Indoor air quality is important, and a solution to remove pollutants using LED bulbs has been found through the use of copper oxide- and graphene-modified titanium dioxide nanoparticles.
MATERIALS TODAY ENERGY
(2022)
Article
Nanoscience & Nanotechnology
Shuning Xiao, Ningyu Zhang, Ying Tao, Xueling Song, Guisheng Li, Hexing Li, Dieqing Zhang
Summary: In this study, a series of carbon nanotube (CNT)-threaded CeO2 mesocrystalline photocatalysts were synthesized using the microwave thermal method. The noncontinuous CNT-threaded structure provided two interfacial charge transport pathways for efficient separation of photogenerated carriers. The introduction of CNTs induced surface Ce3+ and oxygen vacancies in mesocrystalline CeO2, enhancing adsorption and activation of reactants and facilitating a deep oxidation pathway for NO removal. The optimal photocatalyst exhibited remarkable conversion ratio for NO oxidation and NO3- selectivity in a recyclable way.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Wanqian Cai, Chongbiao Zhang, Yourong Wu, Wei Wang, Mei Lin, Tengfei Lin, Cong Lin, Min Gao, Chunlin Zhao, Xiao Wu
Summary: Waste moxa ash was modified by ball milling in hydrogen peroxide, resulting in carbon-based materials with excellent adsorption performance. These materials showed ultrafast removal of the antineoplastic drug mitoxantrone from water, with removal efficiency reaching 97.66% in 1 minute and 99.72% in 30 minutes. The study provides a simple and environmentally friendly solution for controlling mitoxantrone pollution.
Article
Electrochemistry
Rodrigo de Mello, Artur J. Motheo, Cristina Saez, Manuel A. Rodrigo
Summary: The increase in anthropogenic activities has led to an increase in emissions of volatile organic compounds (VOCs), which poses a threat to the environment and human health. Adsorption technologies and electrochemical treatments are effective methods for removing VOCs from the air. Combining these two methods can overcome the limitations of treating diluted solutions. This study evaluated the removal of benzene from diluted water solutions using a combination of adsorption, desorption with methanol, and electrochemical oxidation. The study also found potential for the production of high-value products through electrochemical oxidation of benzene in methanol solutions.
ELECTROCHIMICA ACTA
(2022)
Article
Multidisciplinary Sciences
F. Alshahrani, B. Tawabini, T. Saleh, M. Alrayaan, S. Alaama, R. Nasser, P. Soupios, P. Kirmizakis, M. Mahmoud, T. Oyehan, E. Safi
Summary: The study found that the addition of liquid activated carbon or iron-modified liquid activated carbon to subsurface materials did not significantly improve the removal efficiency of MTBE, but showed a slight improvement in the adsorption efficiency of benzene and toluene.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Multidisciplinary
Kai Fang, Ren-dang Yang
Summary: This study utilized heat-activated carbon for the adsorption and removal of furfural from wastewater, with the air oxidation activated carbon showing good adsorption performance. The study concluded that air oxidation activated carbon could be a cost-effective adsorbent for furfural removal from wastewater.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Probir Chandra Roy, Sher Ali Khan, Chang Min Kim
Summary: The study showed that the interaction between hydrogen atoms and ZnO surfaces varies depending on the orientation of the surface, involving adsorption of hydrogen on oxygen sites and Zn clusters. Additionally, an increase in hydrogen exposure led to an increase in the peak intensity of hydrogen adsorbed on oxygen sites, while the peak intensity of hydrogen adsorbed on Zn clusters decreased.
Article
Chemistry, Multidisciplinary
Byeong Jun Cha, Ji Yoon Choi, Soo Hyun Kim, Shufang Zhao, Sher Ali Khan, Beomgyun Jeong, Young Dok Kim
Summary: Temperature-regulated chemical vapor deposition was used to disperse iron oxide nanoparticles on porous Al2O3 to create a catalytic Fe-oxide/Al2O3 structure for NH3 oxidation. The Fe-oxide/Al2O3 achieved almost complete NH3 removal, with N2 as the main product and no detectable NOx emissions at all temperatures. The results of spectroscopic analysis suggest an NH3 oxidation mechanism mediated by N2H4 on the Fe-oxide/Al2O3 surface. A dual catalytic filter system was designed using Fe-oxide/Al2O3 to fully oxidize NH3 to N2 in a clean and energy-efficient manner.
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)