Article
Chemistry, Physical
Xinying Gao, Jiawei Luo, Yilei Wu, Aini Lu, Ming-Gang Ju, Jinlan Wang
Summary: Lead-free low-dimensional perovskites (LFLDPs) have emerged as promising alternatives to traditional perovskites due to their structural tunability, environmental friendliness, and stability. This article provides a brief description of recent progress on different types of LFLDPs, focusing on the structure-property relationship and luminescence mechanism. The key frontiers and challenges for further developing LFLDP materials are also discussed.
Article
Energy & Fuels
Ziqiang Sun, Hongchao Yang, Zhiwei Ma, Ziyan Zhang, Liangri Han, Zhixuan Wang, Yejun Zhang, Xingyu Wang, Qiangbin Wang
Summary: In this study, silver-gold-selenide quantum dots (AgAuSe QDs) with well-treated defect states were used to construct environment-friendly QD solar cells. The energy-level alignment of the device was modulated by introducing a layer of Au nanoparticles (NPs), which significantly improved the device performance.
Article
Materials Science, Multidisciplinary
Yechang Feng, Wei Hong, Xudong Chen
Summary: An eco-friendly water transfer printing (WTP) method free of primers and activators was developed in this study, using a hydrophobic supramolecular polymer with polydimethylsiloxane (PDMS) segments. The PDMS-PU acted as a pressure-sensitive adhesive to adhere patterns to transfer objects, preventing pattern deformation and prolonging their lifespan. The WTP method produced hydrophobic and self-healing patterns, making it superior to conventional methods.
ACS APPLIED POLYMER MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Zhuojian Li, Ali Imran Channa, Zhiming M. Wang, Xin Tong
Summary: A photoelectrochemical (PEC) cell using semiconductor photoelectrode shows great potential in converting solar energy into hydrogen. However, the use of heavy metal quantum dots (QDs) in current PEC systems poses risks to human health and the environment. This review discusses recent advances in solar-driven PEC devices based on environmentally friendly QDs, and suggests future research directions to tackle the challenges related to synthesis, charge kinetics, and operational stability/efficiency of advanced eco-friendly QDs-PEC systems.
Article
Materials Science, Multidisciplinary
Xiaofei Cao, Zhuangzhuang Ma, Teng Cheng, Yadong Wang, Zhifeng Shi, Jizheng Wang, Li Zhang
Summary: Researchers have reported lead-free Cs3Bi2Br9 perovskite quantum dot (PQD)-based RRAMs with outstanding memory performance, good tolerance towards moisture, heat, and light, and long-term stability. The device also exhibits reliable light-modulated resistive switching behavior and logic gate operations, showing potential for future applications.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Engineering, Mechanical
Bhaskaranand Bhatt, Navnath Kalel, Suyash Ameta, Sarthak Mittal, Jayashree Bijwe
Summary: The research found that a 10% iron-aluminum alloy can replace copper in friction materials with superior performance. However, it is important to note that there may be a slight compromise in fade resistance and counterface friendliness.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Jamila S. Alzahrani, Chahkrit Sriwunkum, Baris Tamer Tonguc, Miysoon A. Alothman, I. O. Olarinoye, M. S. Al-Buriahi
Summary: In this study, the radiation shielding potentials of a glass system with different compositions were evaluated by assessing the interaction parameters between gamma-ray photons, particles, and the glass. The results showed that the glass samples exhibited good performance in absorbing photons and neutrons, making them suitable for radiation protection.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Physical
Lei Jin, Jiabin Liu, Xin Liu, Daniele Benetti, Gurpreet Singh Selopal, Xin Tong, Ehsan Hamzehpoor, Faying Li, Dmytro F. Perepichka, Zhiming M. Wang, Federico Rosei
Summary: Thick-shell colloidal quantum dots (QDs) with size/composition/shape-tunable properties are promising for solar technologies. However, the commonly used toxic metal elements and wide bandgap of the shell limit their performance. This study develops eco-friendly AgInSe2/AgInS2 core/shell QDs, which are optically active in the NIR region and suitable for solar energy conversion. By using a template-assisted cation exchange method, gradient AgInSeS shell layers are incorporated, resulting in improved charge transfer and higher current density in the photoelectrochemical cells.
Review
Engineering, Electrical & Electronic
Gaoyu Liu, Shuai Zhang, Lili Xu, Yang Hu, Xiaoming Li, Shengli Zhang, Haibo Zeng
Summary: Quantum dots (QDs) have outstanding properties of wide and flexibly tunable emission range, high color saturation, and cost-effectiveness, making them promising candidates in the display field. However, most QDs used in high-performance display devices contain toxic elements such as cadmium (Cd) or lead (Pb). In recent years, the application of eco-friendly QDs in light-emitting diodes (LEDs) has been vigorously explored, with efforts in material engineering and device architecture. The review summarizes the recent research progress of three major projects implemented on four types of eco-friendly QDs, including existing challenges, possible solutions, and their feedback on device performance, aiming to provide guidance for the further development of eco-friendly QLEDs.
PROGRESS IN QUANTUM ELECTRONICS
(2022)
Article
Engineering, Biomedical
Jing Ye, Bo Li, Yufeng Zheng, Shuilin Wu, Dafu Chen, Yong Han
Summary: The study found that nanorods with sharp tops can puncture Staphylococcus aureus and that sharpness is the main factor affecting mechano-puncture activity. Sharp nanorods exhibited better performance in bacterial inhibition and osseointegration.
BIOACTIVE MATERIALS
(2022)
Article
Construction & Building Technology
Qahar Mustafa Abdullah, James H. Haido
Summary: This research examines the use of high strength concrete (HSC) with waste PET fibers as a repair material for deteriorated concrete structures. The study found that the highest bond strength was achieved by using sandblasted and grooved interfacial surfaces. Regression analysis and modified models accurately predicted the flexural capacity of the beams.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Multidisciplinary Sciences
Piyush K. Patel
Summary: The study focused on optimizing the performance of a photoexcited lead-free perovskite solar cell device through simulation, determining an appropriate absorber layer thickness and treatment method to achieve a higher power conversion efficiency.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Multidisciplinary
Wenbing Cai, Yinjuan Ren, Zhigao Huang, Qi Sun, Hanchen Shen, Yue Wang
Summary: Different emission origins of ZnSeTe quantum dots were identified through multiple spectroscopic characterizations and calculations. The emission in the case of dilute Te incorporation is attributed to localized states induced by Te clusters, while it disappears with high Te contents.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Sergio S. de Jesus, Rubens Maciel Filho
Summary: Ionic liquids are molten salts with excellent chemical and thermal stability, which have the potential to replace traditional organic solvents. However, their synthesis, toxicity, and biodegradability pose challenges to their environmentally friendly use. Analyzing the processes of synthesis, recovery and recycling, toxicity, and biodegradability reveals the need for further improvements in ionic liquid design to meet the principles of green chemistry.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Review
Chemistry, Multidisciplinary
Shikha Gulati, Arikta Baul, Anoushka Amar, Rachit Wadhwa, Sanjay Kumar, Rajender S. S. Varma
Summary: Carbon quantum dots (CQDs) are a new family of photoluminescent 0D NPs that have attracted much attention due to their unique properties. This review thoroughly discusses the latest trends and advancements in the eco-friendly synthesis and setup of photoluminescent CQDs, with a focus on biomass-derived precursors. The potential for modifying CQDs to create new physicochemical properties is also presented.
Article
Chemistry, Physical
Xiyu Song, Huanghuang Chen, Aiqin Hou, Kongliang Xie
JOURNAL OF MOLECULAR LIQUIDS
(2019)
Article
Materials Science, Textiles
Xiyu Song, Aiqin Hou, Kongliang Xie, Tingli Hu
FIBERS AND POLYMERS
(2020)
Article
Chemistry, Applied
Shengli Wang, Linbo Gao, Aiqin Hou, Kongliang Xie, Xiyu Song
Summary: Novel bisazo disperse dyes based on symmetrical structures were successfully synthesized, showing improved dyeing performance on PET fabrics by introducing 1,4-butanediol as a soft chain to enhance affinity with fibers. The use of ester groups in both dye molecules and fibers, along with increased molecular size, resulted in stronger Van der Waals forces and hydrogen bonding, contributing to the enhanced dyeing properties.
Article
Chemistry, Applied
Linxiang Li, Xiyu Song, Shuaijun Fang, Lei Qian, Hongfei Qian
Summary: New disperse dyes containing urea groups were synthesized and their molecular structure-property correlations were investigated. The introduction of p-toluenpiride group resulted in slower dyeing rates and improved fastness properties on nylon fibers.
Article
Ecology
Aiqin Gao, Kongliang Xie, Xiyu Song, Kai Zhang, Aiqin Hou
ECOLOGICAL ENGINEERING
(2017)
Article
Polymer Science
Zhongming Yuan, Hiroko Yamamoto, Shinji Kanehashi, Takeshi Shimomura
Summary: This study reports the synthesis of a flexible light-emitting polymer film using a solution blending method. The selective positioning of MEH-PPV molecules in the PS phase of the film was confirmed. The film exhibited a nanometer-scale luminescent domain with low aggregation quenching and showed good elastomeric characteristics.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2024)