Article
Thermodynamics
Yuqi Liu, Moyun Kang, Wei Lin, Chenchen Liang, Wenjuan Qu, Yapeng Wang, Yu Guan, Jiaji Cheng
Summary: The organic phase change material (PCM) microcapsules were synthesized with halloysite nanotubes (HNTs) by the emulsion copolymerization method to enhance thermal conductivity and flame retardant. FT-IR, XPS, and SEM confirmed the successful synthesis of microcapsules with HNTs. DSC analysis showed the melting peak temperatures and latent heat of microcapsules. The results indicated that the phase change material microcapsules with HNTs possess great thermal storage efficiency and temperature regulation capability. The cone calorimeter measurement demonstrated satisfactory flame retardancy. This study simultaneously enhances the thermal conductivity and flame retardant of organic PCM microcapsules by HNTs.
APPLIED THERMAL ENGINEERING
(2023)
Article
Engineering, Environmental
Shuo Wang, Ke Lei, Zhiyuan Wang, Hao Wang, Deqiu Zou
Summary: This paper provides an overview of the classification, preparation methods, and applications of metal-based phase change material microcapsules. The performance of the microcapsules is evaluated by comparing thermophysical properties. Furthermore, existing problems and future research directions are discussed.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Furong Li, Zhicheng Sun, Shouzheng Jiao, Yutong Ma, Qingqing Zhang, Yang Zhou, Jinyue Wen, YuanYuan Liu
Summary: This study successfully prepared a new type of dual-functional magnetic shielding phase change microcapsules, which can be applied to the field of magnetic shielding through in situ polymerization and screen printing. The addition of different magnetic particles (Fe3O4, CrO2) can significantly improve the phase change latent heat, thermal stability, and thermal conductivity of the microcapsules.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Construction & Building Technology
Asasei Unarine Casey Ndanduleni, Thandiwe Bongani Radebe, Zhongjie Huan
Summary: The majority of South African informal settlements are constructed using corrugated profile galvanized metal sheets, which result in high temperature fluctuations. The study investigates the impact of plank chipboard insulation and the integration of a Phase Change Material (PCM) layer on the temperature fluctuations. The experiments reveal significant reductions in temperature fluctuations with the use of insulation and PCM, and simulations confirm the effectiveness of a lower phase change temperature range.
BUILDING AND ENVIRONMENT
(2023)
Article
Energy & Fuels
Naik B. Srinivasaraonaik, Lok P. Singh, Shishir Sinha, Inderjeet Tyagi, Gargi Mittal
Summary: Incorporating ME-PCM in mortar can decrease compressive strength and bulk density, increase water absorption, while reducing thermal conductivity and thermal diffusivity, while enhancing heat storage capacity.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Energy & Fuels
Arjun Venugopal, K. K. Anzil, Basil George Thomas, Jacob Thottathil Varghese
Summary: This paper proposes a novel approach to cool the interior region of motorcycle helmets using nano-enhanced organic Phase Change Material. The results show that the addition of nanoparticles can significantly improve the thermal conductivity of the material, and the nano-enhanced PCM incorporated helmet can effectively reduce the interior temperature, improving the comfort for motorcycle riders.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Jiaji Cheng, Shaoshuai Niu, Moyun Kang, Yuqi Liu, Feng Zhang, Wenjuan Qu, Yu Guan, Shaoxiang Li
Summary: A novel Fe3O4/carbon nanotubes modified PCM microcapsule was successfully fabricated with improved thermal stability and conductivity, showing a great inhibitory effect on heat and smoke release during combustion of composite materials. It also demonstrated excellent ability to maintain indoor temperature stability and absorb/release heat, which will greatly promote its application in insulation materials.
Article
Green & Sustainable Science & Technology
M. Mazlan, M. Rahmani-dehnavi, G. Najafi, B. Ghobadian, S. S. Hoseini, E. Fayyazi, R. Mamat, Raslan A. Alenezi, M. Mofijur
Summary: This study aimed to evaluate the thermal behavior of cylindrical modules in a thermal energy storage unit using paraffin waxes as phase change material and water as heat transfer fluid. The results showed that increasing charge inlet temperature and flow led to improved heat power and thermal performance. The optimized conditions resulted in a maximum thermal performance of 96.4% and a maximum heat power level of 1.7 kW.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Thermodynamics
Moyun Kang, Yuqi Liu, Chenchen Liang, Wei Lin, Changxiang Wang, Chaojie Li, Feng Zhang, Jiaji Cheng
Summary: This study successfully inserted flame retardant halloysite nanotubes (c-HNTs) doped by 9,10-dihydro9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and Cu nanoparticles into the microencapsulated phase change material (MPCM) to improve its thermal conductivity and flammability. The presence of c-HNTs in MPCM provides the best thermal stability, delays heat transfer, and reduces heat and smoke release rate in the epoxy resin composite. Moreover, the MPCM with c-HNTs shows the minimum temperature fluctuation, making it suitable for insulation materials.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Materials Science, Multidisciplinary
Sumit Parvate, Jitendra Singh, Prakhar Dixit, Jagadeeswara Reddy Vennapusa, Tushar Kanti Maiti, Sujay Chattopadhyay
Summary: This study successfully synthesized dual-functional microcapsules with thermal energy storage and photocatalytic activity using a novel approach, where TiO2 was used as a particle stabilizer and photocatalyst. The thermal energy storage and photocatalytic properties were comprehensively characterized for the microcapsules.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Physical
Fengyun Wang, Navid Nasajpour-Esfahani, As'ad Alizadeh, Ghassan Fadhil Smaisim, Azher M. Abed, Salema K. Hadrawi, Saman Aminian, Roozbeh Sabetvand, D. Toghraie
Summary: This research used molecular dynamics simulations to study the thermal performance of phase change material microcapsules containing gold nanoparticles in a nanochannel. The results show that increasing the initial temperature decreases the charging and discharging time, viscosity, and phase transition time, while increasing the heat flux and thermal conductivity. Changing the initial pressure has a minimal effect on the charging and discharging time, heat flux, and thermal conductivity. Increasing the number of metal layers in the nanochannel shells prolongs the charging and discharging time but reduces the heat flux and thermal conductivity.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Thermodynamics
Chenxi Hu, Zihe Wang, Renfei Bo, Canyang Li, Xi Meng
Summary: Wearing Personal Protective Equipment (PPE) is crucial for protecting healthcare workers during COVID-19. Traditional cooling methods are ineffective, so a cooling clothing integrated with phase change material (PCM-CC) was proposed. Human experiments and questionnaires indicated that wearing PCM-CC alleviated heat symptoms associated with PPE and improved thermal comfort. PCM-CC reduced head and facial discomfort, improved thermal sensation, lowered skin temperatures, and proved effective in regulating temperature for healthcare workers during the pandemic.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Review
Construction & Building Technology
C. Suresh, Tapano Kumar Hotta, Sandip K. Saha
Summary: With the increase in urbanization and improved living standards, there is a higher demand for energy worldwide. The building sector is a major consumer of energy, accounting for about 40% of total energy consumption and causing environmental impacts. Researchers are challenged to reduce energy consumption without compromising thermal comfort in buildings. Phase change materials (PCMs) have the potential to store and release heat for energy conservation and thermal regulation. Integrating PCMs into building materials can significantly improve thermal comfort and reduce energy consumption. This study reviews the effects of PCM integration into building envelopes and discusses energy savings and economic benefits. It concludes that PCMs integrated into building envelopes such as walls, roofs, ceilings, and windows can lead to energy consumption reduction and improved thermal comfort. Micro/nano encapsulation and shape stabilization techniques show higher thermal performance compared to macro and impregnation techniques. In-situ-polymerization and emulsion polymerization are commonly used encapsulation techniques due to their efficiency and simplicity. PCMs with phase transition temperatures close to ambient conditions are found to be promising for enhancing thermal comfort in buildings.
ENERGY AND BUILDINGS
(2022)
Article
Engineering, Environmental
Nan Sheng, Jiahui Lu, Jingdong Hu, Ruijie Zhu, Laras Fadillah, Cheng Wang, Chunyu Zhu, Zhonghao Rao, Hiroki Habazaki
Summary: Metallic Sn microcapsules coated with a stable SnO2 shell have been developed for medium-temperature thermal energy storage, demonstrating high melting point, latent heat, and excellent thermal cycling stability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Applied
Moyun Kang, Yuqi Liu, Wei Lin, Chenchen Liang, Wenjuan Qu, Shaoxiang Li, Yapeng Wang, Feng Zhang, Jiaji Cheng
Summary: By encapsulating organic phase change material (PCM) in a shell to form phase change material microcapsule (EPCM), it can be directly incorporated into matrix resin to enhance thermal storage capacity. However, previous studies have shown that the encapsulation of organic shell materials negatively affects the thermal storage efficiency of PCM and increases fire hazard. To address this issue, we decorated halloysite nanotube (HNT) with P, N component (p-HNT) and embedded it into EPCM (p-h-EPCM), achieving high thermal conductivity, flame retardancy, and thermal regulation performance for building insulation coatings.
PROGRESS IN ORGANIC COATINGS
(2023)
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)