Review
Chemistry, Multidisciplinary
Yiguo Yao, Caidong Cheng, Chenyang Zhang, Hanlin Hu, Kai Wang, Stefaan De Wolf
Summary: This review systematically summarizes recent progress in using organic hole-transporting layers (HTLs) in inverted p-i-n perovskite solar cells (PSCs), including conductive polymers, small molecules, and self-assembled monolayers. The molecular structure, hole-transport properties, energy levels, and relevant device properties and performances of organic HTLs are analyzed. Design principles and future outlook for highly efficient organic HTLs in inverted PSCs are proposed, aiming to inspire further innovative development of novel organic HTLs for more efficient, stable, and scalable inverted PSCs.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Benfang Niu, Haoran Liu, Yanchun Huang, Emely Gu, Minxing Yan, Ziqiu Shen, Kangrong Yan, Buyi Yan, Jizhong Yao, Yanjun Fang, Hongzheng Chen, Chang-Zhi Li
Summary: A simple and scalable interfacial strategy is reported to facilitate the assembly of high-performance inverted perovskite solar cells (PSCs) and scale-up modules. This strategy improves the chemical stability, charge extraction, and energy level alignment of the hole-selective interface, while promoting perovskite crystallization. As a result, the corresponding inverted PSCs and modules achieve remarkable power conversion efficiencies (PCEs) of 24.5% and 20.7% (aperture area of 19.4 cm(2)), respectively. This strategy is also effective for perovskite with various bandgaps, demonstrating the highest PCE of 19.6% for the 1.76-eV bandgap PSCs.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Physical
Tianpeng Li, Feifei He, Jia Liang, Yabing Qi
Summary: Perovskite solar cells (PSCs) have promising potential in the field of photovoltaic technology due to their high efficiencies, low costs, and simple preparation routes. However, tin (Sn)-based PSCs (TPSCs) face challenges such as oxidation issues and energy level mismatches in the functional layers. Efforts have been made to address these challenges and improve the performance of TPSCs.
Article
Engineering, Environmental
Chunyan Lu, Xiaodong Li, Xuemin Guo, Sheng Fu, Wenxiao Zhang, Haobo Yuan, Junfeng Fang
Summary: By introducing the humidity-assisted polymerizable additive MMDS, efficient CsPbI3 perovskite solar cells (PSCs) can be fabricated in common air without humidity control. MMDS molecules can react with water in the air and self-polymerize to form a water-resistant polymer at grain boundaries, preventing further moisture invasion. The -SH group in MMDS can passivate under-coordinated Pb2+ and reduce trap density in CsPbI3 films. As a result, high efficiencies of >18% are achieved in inverted CsPbI3 PSCs regardless of the relative humidity between 40% and 80%.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Sikandar Iqbal, Aadil Nabi Chishti, Muhammad Bilal Hussain, Fakhr uz Zaman, Abdul Qayum, Rashid Mehmood, Shahid Zaman
Summary: The conductivity and intrinsic properties of PEDOT:PSS have been improved by doping with ammonium chloride (NH4Cl), making it a potential candidate for high-efficiency inverted perovskite solar cells. The doped PEDOT:PSS exhibits higher conductivity and surface roughness, leading to increased light absorption and improved power conversion efficiency.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Qing Yang, Xuan Liu, Shuwen Yu, Zhendong Feng, Lixin Liang, Wei Qin, Youyang Wang, Xiaobo Hu, Shaoqiang Chen, Zhaochi Feng, Guangjin Hou, Kaifeng Wu, Xin Guo, Can Li
Summary: The use of IT-DOH as a acceptor material has successfully improved the performance of i-PSCs, achieving a high conversion efficiency of 22.09%.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Xinyi Liu, Hong Wei Qiao, Mengjiong Chen, Bing Ge, Shuang Yang, Yu Hou, Hua Gui Yang
Summary: Potassium salt-modified nickel oxides as hole transport layers were found to improve the photovoltaic performance of inverted perovskite solar cells, achieving higher charge recombination impedance and reduced trap densities. The champion device with potassium iodide-modified NiOX film attained a PCE of 20.10% and an enhanced fill factor of 0.812, demonstrating potassium doping as an effective route for enhancing the performance of inverted planar PSCs.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Energy & Fuels
Jing Zhou, Haixin Wang, Jianan Wang, Rui Chen, Sanwan Liu, You Gao, Yongyan Pan, Fumeng Ren, Xin Meng, Zhichun Yang, Zonghao Liu, Wei Chen
Summary: A dual crosslinked functional layer strategy using polydimethylsiloxane as an additive is utilized to enhance the operational stability of p-i-n perovskite solar cells (PSCs) by improving the device tolerance against light, thermal, humidity, and bending stress. This strategy leads to a promising power conversion efficiency of 21.6% (stabilized at 21.3%) for nickel oxide-based PSCs. Additionally, the unencapsulated devices maintain high efficiencies after prolonged exposure to various conditions and the flexible devices demonstrate improved bending mechanical stability.
Review
Chemistry, Physical
Zhiyuan Xu, Qixin Zhuang, Yuqin Zhou, Shirong Lu, Xiaohui Wang, Wensi Cai, Zhigang Zang
Summary: Perovskite solar cells (PSCs) are highly promising due to their high efficiency, low cost, and ease of fabrication. Flexible perovskite solar cells (FPSCs), specifically, are lightweight and bendable, making them suitable for wearable and portable electronics, space energy systems, and more. Inverted p-i-n FPSCs offer operational stability, reduced hysteresis effect, low-temperature fabrication, and potential for tandem devices. With PCEs reaching 21.76% and 24.7% for single-junction and tandem-inverted FPSCs respectively, commercial applications are highly anticipated. This review discusses the development of functional layers and technologies for accelerating the commercialization of inverted FPSCs, providing perspectives on their future development and commercialization.
Article
Chemistry, Multidisciplinary
Cuiping Zhang, Qiaogan Liao, Jinyu Chen, Bolin Li, Chaoying Xu, Kun Wei, Guozheng Du, Yang Wang, Dachang Liu, Jidong Deng, Zhide Luo, Shuping Pang, Ye Yang, Jingrui Li, Li Yang, Xugang Guo, Jinbao Zhang
Summary: The development of a new polymer hole conductor through cross-linking technology demonstrates its potential in achieving high-performance and stable inverted perovskite solar cells.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hui Wang, Pang Wang, Yuandong Sun, Chen Gao, Weiqiang Miao, Donghui Li, Yujie Yang, Tao Wang, Dan Liu
Summary: Charge transport layers are crucial for the efficiency and stability of perovskite solar cells. The combination of p-type and n-type charge transfer complexes as transport layers enhances charge transport and photoconductivity, resulting in improved performance and stability of PSCs.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Jiangshan Shi, Bin Li, Qinghong Zhang, Yichuan Rui
Summary: AgCuO2, a p-type semiconductor with high hole mobility, synthesized by electrochemical deposition can serve as a hole transport layer in perovskite solar cells, achieving high efficiency and excellent properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
Hanadi Mehdi, Muriel Matheron, Asya Mhamdi, Stephane Cros, Abdelaziz Bouazizi
Summary: Research was conducted on the impact of HTLs on the growth process and photovoltaic performance of perovskite active layers, analyzing the effects of various HTL materials and thermal annealing treatments on device performance.
Through various methods such as scanning electron microscopy, X-ray diffraction, and spectroscopy, the effects of HTLs on perovskite solar cells were explored.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Nanoscience & Nanotechnology
Somnath Mahato, Arup Ghorai, Ajoy Mondal, Sanjeev Kumar Srivastava, Mantu Modak, Shreyasi Das, Samit K. Ray
Summary: Colloidal synthesized cubic alpha-CsPbI3 perovskite nanocrystals with smaller lattice constant and their nanoscale surface mapping have shown superior photovoltaic performance. Atomic scale transmission electron microscopy has been used to probe the precise arrangement of atoms in the nanocrystals, and theoretical calculations reveal the realization of direct band to band transition with a lower band gap. Nanoscale surface mapping and conductive atomic force microscopy have been employed to study the films deposited on different layers, and the carrier transport through grain interiors and boundaries has been investigated. Inverted perovskite solar cells using alpha-CsPbI3 as an absorber layer have achieved high power conversion efficiency, showing potential for future photovoltaic devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
Jiexuan Jiang, Andraz Mavric, Nadiia Pastukhova, Matjaz Valant, Qiugui Zeng, Zeyu Fan, Beibei Zhang, Yanbo Li
Summary: In this study, doped inorganic carrier-selective layers were prepared using a dual-source electron-beam co-evaporation method, leading to improved conductivity and power conversion efficiency in perovskite solar cells. Furthermore, the insertion of a titanium buffer layer improved band alignment and long-term stability. The results demonstrate the potential of co-evaporated carrier-selective layers for large-scale applications.
Article
Energy & Fuels
Seongmin Park, Hyunsu Han, Junil Choi, Seungjun Lee, Minseon Park, Won Bae Kim
Summary: A new ceramic-based catalyst with exsolved CoFe nanoparticles anchored on a Ruddlesden-Popper structure has been successfully synthesized and analyzed for its applicability as an anode in solid oxide fuel cells. The catalyst showed good electrochemical performance attributed to the presence of oxygen vacancies, low synthesis temperature, and additional chemisorption and activation sites provided by the exsolved CoFe nanoparticles. This material holds promise as a potential anode material for SOFCs.
Article
Chemistry, Physical
Hyunsu Han, Song Jin, Seongmin Park, Min Ho Seo, Won Bae Kim
Summary: In this study, atomically dispersed Ir species supported on 3D porous carbon networks are proposed as efficient electrocatalysts for CO2 conversion to CO production, showing high Faradaic efficiency and turnover frequency values. This outstanding catalytic performance is attributed to the structural advantages of the 3D carbon network and atomically dispersed Ir species on the carbon support, as revealed by detailed experimental studies and DFT calculations.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Yoo Sei Park, Jaehoon Jeong, Yuseong Noh, Myeong Je Jang, Jooyoung Lee, Kyu Hwan Lee, Dong Chan Lim, Min Ho Seo, Won Bae Kim, Juchan Yang, Sung Mook Choi
Summary: A high-performance, durable non-precious metal electrocatalyst for anion exchange membrane water electrolyzers has been developed, showing improved activity and durability through alloying and oxide formation. The electrocatalyst's enhanced performance was demonstrated in single-cell and stack cell systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Junil Choi, Minho Kim, Song Kyu Kang, Jihoon Kim, Jungseub Ha, Hyun Ho Shin, Taiho Park, Won Bae Kim
Summary: In this study, a bifunctional electrode material for electrochemical oxidations and CO2 electrolysis was successfully prepared. By in situ phase transition and exsolution of Ni-Fe alloy nanoparticles in a reducing atmosphere, NiFe-R.P.PSFNNb exhibited superior electrochemical performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Energy & Fuels
Hyun Ho Shin, Junil Choi, Taiho Park, Won Bae Kim
Summary: Anode-supported proton-conducting solid oxide fuel cells (PC-SOFCs) fabricated with two different proton-conducting oxides, BaCe0.7Zr0.1Y0.1Yb0.1O3-delta (BCZYYb) and BaZr0.8Y0.2O3-delta (BZY), were compared to investigate their electrochemical performances when fueled with syngas. The BCZYYb cells exhibited higher maximum power density (MPD) than the BZY cells when operating on H-2, but degraded more rapidly when operating on syngas. Decreasing the anode thickness improved the stability of BCZYYb cells on syngas. Heterogeneous catalysis experiments showed no significant difference in catalytic activity between the anode powders prepared with the two proton-conducting oxides.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Minho Kim, Song Kyu Kang, Junil Choi, Hwichan Ahn, Junhyuk Ji, Sang Ho Lee, Won Bae Kim
Summary: Patterned electrodes have been developed to improve fast-charging attributes in solid-state lithium-ion batteries by enhancing electrochemically activated surfaces within the electrodes. The study demonstrates the potential of patterned electrodes in improving electrode dynamics through customized empty channel structures and a composite electrolyte.
Article
Chemistry, Multidisciplinary
Namgi Jeon, Sujin Kim, Akhil Tayal, Jungmok Oh, Wongeun Yoon, Won Bae Kim, Yongju Yun
Summary: Modulating the interactions between catalyst components is crucial for improving the efficiency of NH3 decomposition. In this study, the performance of Ru-based catalysts was enhanced by controlling the interface between Ru particles and BaCeO3 support. Y-doping facilitated the formation of the SMSI interface and improved the stability of the catalyst.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Song Kyu Kang, Minho Kim, Hyun Ho Shin, Wongeun Yoon, Seungjun Lee, Daehee Jang, Junil Choi, Gwan Hyeon Park, Jungsoo Park, Won Bae Kim
Summary: Mn3-xFexO4 nanosheets with interconnected conductive networks were synthesized, showing high reversible capacity and rate capability, which can overcome the theoretical limitations of conventional metal oxide materials and boost Li-ion storage capacity by surface alteration.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Jeongmyeong Kim, Minji Yun, Byeongju Song, Won Bae Kim, Yongju Yun
Summary: The development of chiral catalysts is crucial for producing enantiopure compounds, which are highly sought after by the pharmaceutical and fine chemical industries. Heterogeneous catalysts, such as supported and chirally modified Pt catalysts, offer advantages like high stability, easy separation, and reusability. In this study, a highly efficient and versatile Pt/B-SiO2 catalyst was developed through the facile impregnation method, demonstrating excellent enantioselective hydrogenation performance for alpha-keto esters.
Review
Energy & Fuels
Minho Kim, Hwichan Ahn, Junil Choi, Won Bae Kim
Summary: Silicon is a promising alternative to graphite anode in lithium-ion batteries, but it faces challenges such as particle pulverization and unstable solid electrolyte interphase. All-solid-state batteries provide a different interface for silicon anodes, offering potential for improved electrochemical stability and lifespan. Incorporating silicon anodes into all-solid-state batteries is a strong strategy to overcome the limitations of conventional anode materials, but contact losses between silicon and solid-state electrolyte need to be addressed for optimal performance and stability.
Review
Chemistry, Physical
Venkata Thulasivarma Chebrolu, Daehee Jang, Gokana Mohana Rani, Chaeeun Lim, Kijung Yong, Won Bae Kim
Summary: The concept of green ammonia with zero carbon emissions has gained attention as countries seek to reduce their reliance on fossil fuels. The electrochemical nitrogen reduction reaction (ENRR) has emerged as a promising approach to produce ammonia, but there are challenges in terms of efficiency and production rates. This review provides an overview of the importance of ammonia as an energy carrier, the theory and mechanism of ENRR, different electrolytic systems for ammonia synthesis, and the latest advances in electrocatalysts for ENRR.
Article
Energy & Fuels
Jaejin Bae, Junhyuk Ji, Minho Kim, Song Kyu Kang, Gwan Hyeon Park, Yun Ho Jeong, Changshin Jo, Won Bae Kim
Summary: Nowadays, thickness optimization of an electrode is an effective approach for enhancing the energy density and areal capacity of Li-ion batteries. This paper presents a simple electrospinning technique to fabricate lithium titanium oxide (LTO) nanowire sheet bundles with controllable electrode thickness. The unique microscale layer-by-layer configuration of the LTO nanowires in the sheet bundles enables high areal capacity and efficient penetration of electrolytes. The fabricated LNSB electrode exhibits an ultrahigh areal capacity, outperforming commercial graphite anodes, and holds promise for advanced energy storage applications.
Article
Engineering, Electrical & Electronic
Jae Won Youn, Gwan Hyeon Park, Minho Kim, Song Kyu Kang, Daehee Jang, Won Bae Kim
Summary: F-doped carbon layer coating is an effective surface modification method to enhance the intrinsic conductivity of active materials and facilitate the accommodation of solvated Li+ ions near the carbon surface. By using a cost-effective coating material PVDF, high electrochemical performance can be achieved in lithium-ion capacitors (LICs). A uniform and thin coating of an F-doped amorphous carbon layer on natural graphite (NG) surface results in a high energy density and improved capacity retention compared to pristine NG.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Haeryang Lim, Jae-Yeop Jeong, Dae Hwan Lee, Shin-Woo Myeong, Giwon Shin, Dayeong Choi, Won Bae Kim, Sung Mook Choi, Taiho Park
Summary: In this study, a novel aryl ether-free poly(fluorene) anion exchange membranes (AEMs) were developed and their morphology and conformation were analyzed. It was found that PFPB-QA, with the lowest glass transition temperature, exhibited the most oriented structure and well-connected ion transport channels, achieving high conductivity and alkaline stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Multidisciplinary
Daehee Jang, Hyunsu Han, Junbeom Maeng, Wongeun Yoon, Minseon Park, Won Bae Kim
Summary: This study prepares and investigates highly active and stable PdSb nanoparticle catalysts for electrooxidation reactions of various alcohols under alkaline conditions. The optimized PdxSby/PC catalysts show high catalytic activity and long-term stability, which can significantly improve the catalytic performance of alcohol fuel cells.
MATERIALS ADVANCES
(2022)
Article
Chemistry, Multidisciplinary
Laetitia Bardet, Herve Roussel, Stefano Saroglia, Masoud Akbari, David Munoz-Rojas, Carmen Jimenez, Aurore Denneulin, Daniel Bellet
Summary: The thermal instability of silver nanowires leads to increased electrical resistance in AgNW networks. Understanding the relationship between structural and electrical properties of AgNW networks is crucial for their integration as transparent electrodes in flexible optoelectronics. In situ X-ray diffraction measurements were used to study the crystallographic evolution of Ag-specific Bragg peaks during thermal ramping, revealing differences in thermal and structural transitions between bare and SnO2-coated AgNW networks.
Article
Chemistry, Multidisciplinary
Nathalia Cancino-Fuentes, Arnau Manasanch, Joana Covelo, Alex Suarez-Perez, Enrique Fernandez, Stratis Matsoukis, Christoph Guger, Xavi Illa, Anton Guimera-Brunet, Maria V. Sanchez-Vives
Summary: This study provides a comprehensive characterization of graphene-based solution-gated field-effect transistors (gSGFETs) for brain recordings, highlighting their potential clinical applications.
Article
Chemistry, Multidisciplinary
Sikandar Aftab, Hailiang Liu, Dhanasekaran Vikraman, Sajjad Hussain, Jungwon Kang, Abdullah A. Al-Kahtani
Summary: This study examines the effects of hybrid nanoparticles made of NiO@rGO and NiO@CNT on the active layers of polymer solar cells and X-ray photodetectors. The findings show that these hybrid nanoparticles can enhance the charge carrier capacities and exciton dissociation properties of the active layers. Among the tested configurations, the NiO@CNT device demonstrates superior performance in converting sunlight into electricity, and achieves the best sensitivity for X-ray detection.
Article
Chemistry, Multidisciplinary
Hyo Jung Shin, Seung Gyu Choi, Fengrui Qu, Min-Hee Yi, Choong-Hyun Lee, Sang Ryong Kim, Hyeong-Geug Kim, Jaewon Beom, Yoonyoung Yi, Do Kyung Kim, Eun-Hye Joe, Hee-Jung Song, Yonghyun Kim, Dong Woon Kim
Summary: This study investigates the role of SOX9 in reactive astrocytes following ischemic brain damage using a PLGA nanoparticle plasmid delivery system. The results demonstrate that PLGA nanoparticles can reduce ischemia-induced neurological deficits and infarct volume, providing a potential opportunity for stroke treatment.
Article
Chemistry, Multidisciplinary
Anurag Chaudhury, Koushik Debnath, Nikhil R. Jana, Jaydeep K. Basu
Summary: The study investigates the interaction between nanoparticles and cell membranes, and identifies key parameters, including charge, crowding, and membrane fluidity, that determine the adsorbed concentration and unbinding transition of nanoparticles.
Article
Chemistry, Multidisciplinary
Sina Sadeghi, Fazel Bateni, Taekhoon Kim, Dae Yong Son, Jeffrey A. Bennett, Negin Orouji, Venkat S. Punati, Christine Stark, Teagan D. Cerra, Rami Awad, Fernando Delgado-Licona, Jinge Xu, Nikolai Mukhin, Hannah Dickerson, Kristofer G. Reyes, Milad Abolhasani
Summary: In this study, an autonomous approach for the development of lead-free metal halide perovskite nanocrystals is presented, which integrates a modular microfluidic platform with machine learning-assisted synthesis modeling. This approach enables rapid and optimized synthesis of copper-based lead-free nanocrystals.
Article
Chemistry, Multidisciplinary
Zahir Abbas, Nissar Hussain, Surender Kumar, Shaikh M. Mobin
Summary: The rational construction of free-standing and flexible electrodes for electrochemical energy storage devices is an emerging research focus. In this study, a redox-active metal-organic framework (MOF) was prepared on carbon nanofibers using an in situ approach, resulting in a flexible electrode with high redox-active behavior and unique properties such as high flexibility and lightweight. The prepared electrode showed excellent cyclic retention and rate capability in supercapacitor applications. Additionally, it could be used as a freestanding electrode in flexible devices at different bending angles.
Article
Chemistry, Multidisciplinary
Lishan Zhang, Xiaoting Zhang, Hui Ran, Ze Chen, Yicheng Ye, Jiamiao Jiang, Ziwei Hu, Miral Azechi, Fei Peng, Hao Tian, Zhili Xu, Yingfeng Tu
Summary: Photodynamic therapy (PDT) is a promising local treatment modality in cancer therapy, but its therapeutic efficacy is restricted by ineffective delivery of photosensitizers and tumor hypoxia. In this study, a phototactic Chlorella-based near-infrared (NIR) driven green affording-oxygen microrobot system was developed for enhanced PDT. The system exhibited desirable phototaxis and continuous oxygen generation, leading to the inhibition of tumor growth in mice. This study demonstrates the potential of using a light-driven green affording-oxygen microrobot to enhance photodynamic therapy.
Article
Chemistry, Multidisciplinary
Yujin Li, Jing Xu, Xinqi Luo, Futing Wang, Zhong Dong, Ke-Jing Huang, Chengjie Hu, Mengyi Hou, Ren Cai
Summary: In this study, hollow heterostructured materials were constructed using an innovative template-engaged method as cathodes for zinc-ion batteries. The materials exhibited fast Zn2+ transport channels, improved electrical conductivity, and controlled volume expansion during cycling. The designed structure allowed for an admirable reversible capacity and high coulombic efficiency.
Article
Chemistry, Multidisciplinary
Paritosh Mahato, Shashi Shekhar, Rahul Yadav, Saptarshi Mukherjee
Summary: This study comprehensively elucidates the role of the core and electrostatic surface of metal nanoclusters in catalytic reduction reactions. The electrostatic surface dramatically modulates the reactivity of metal nanoclusters.
Article
Chemistry, Multidisciplinary
Pei Liu, Mengdi Liang, Zhengwei Liu, Haiyu Long, Han Cheng, Jiahe Su, Zhongbiao Tan, Xuewen He, Min Sun, Xiangqian Li, Shuai He
Summary: This study demonstrates a simple and environmentally-friendly method for the synthesis of zinc oxide nanozymes (ZnO NZs) using wasted hop extract (WHE). The WHE-ZnO NZs exhibit exceptional peroxidase-like activity and serve as effective catalysts for the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). In addition, a straightforward colorimetric technique for detecting both H2O2 and glucose was developed using the WHE-ZnO NZs as peroxidase-like catalysts.
Article
Chemistry, Multidisciplinary
Hyunkyu Oh, Young Jun Lee, Eun Ji Kim, Jinseok Park, Hee-Eun Kim, Hyunsoo Lee, Hyunjoo Lee, Bumjoon J. Kim
Summary: Mesoporous carbon particles have unique structural properties that make them suitable as support materials for catalytic applications. This study investigates the impact of channel nanostructures on the catalytic activity of porous carbon particles (PCPs) by fabricating PCPs with controlled channel exposure on the carbon surface. The results show that PCPs with highly open channel nanostructures exhibit significantly higher catalytic activity compared to those with closed channel nanostructures.
Article
Chemistry, Multidisciplinary
Yunjie Lu, Zhaohui Li, Zewei Li, Shihao Zhou, Ning Zhang, Jianming Zhang, Lu Zong
Summary: A tough, long-lasting adhesive and highly conductive nanocomposite hydrogel (PACPH) was fabricated via the synergy of interfacial entanglement and adhesion group densification. PACPH possesses excellent mechanical properties, interfacial adhesion strength, and conductivity, making it a promising material for long-term monitoring of human activities and electrocardiogram signals.
Article
Chemistry, Multidisciplinary
Zichao Wei, Audrey Vandergriff, Chung-Hao Liu, Maham Liaqat, Mu-Ping Nieh, Yu Lei, Jie He
Summary: We have developed a simple method to prepare polymer-grafted plasmonic metal nanoparticles with pH-responsive surface-enhanced Raman scattering. By using pH-responsive polymers as ligands, the aggregation of nanoparticles can be controlled, leading to enhanced SERS. The pH-responsive polymer-grafted nanoparticles show high reproducibility and sensitivity in solution, providing a novel approach for SERS without the need for sample pre-concentration.
Article
Chemistry, Multidisciplinary
Melis Ozge Alas Colak, Ahmet Gungor, Merve Buldu Akturk, Emre Erdem, Rukan Genc
Summary: This research investigates the effect of functionalizing carbon dots with hydroxyl polymers on their performance as electrode materials in a supercapacitor. The results show that the functionalized carbon dots exhibit excellent electrochemical performance and improved stability.
