Article
Chemistry, Multidisciplinary
Karina Portillo-Cortez, Ana Martinez, Monserrat Bizarro, Mario F. Garcia-Sanchez, Frank Guell, Ateet Dutt, Guillermo Santana
Summary: In this study, zinc oxide nanowires with different aspect ratios were fabricated using the vapor-liquid-solid (VLS) process. The nanowires exhibited high crystalline quality, vertical orientation, and good density distribution, making them suitable for potential applications as photoelectrodes. Furthermore, the optical properties of the nanowires were enhanced by the presence of N719 dye and gold nanoparticles.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Physical
M. Kandasamy, M. Selvaraj, C. Kumarappan, S. Murugesan
Summary: In this study, ethylenediamine functionalized titanium dioxide nanowires graphene oxide/silver nanoparticle plasmonic nanocomposites were synthesized and utilized as photoanodes in dye-sensitized solar cells. The results showed that the prepared nanocomposites exhibited strong light harvesting and improved dye loading, resulting in high conversion efficiency of solar energy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Zumar Ahmad, Esha Farooq, Rabia Nazar, Umer Mehmood, Imran Fareed
Summary: In this study, nanocomposites of multi-walled carbon nanotubes and polythiophene were synthesized using in-situ polymerization. The amount of multi-walled carbon nanotubes in the composites was found to affect the effectiveness of solar devices, with the 30% MWCNTs/PTh cell exhibiting the highest performance.
Article
Chemistry, Applied
Muhammad Ahsan Saeed, Kicheon Yoo, Hyeong Cheol Kang, Jae Won Shim, Jae-Joon Lee
Summary: Dye-sensitized photovoltaic cells (DSPVs) show great potential for indoor photovoltaic applications due to their exceptional light-harvesting capability and stable performance under ambient illumination conditions, achieving record-high power-conversion efficiency of over 30%.
Article
Energy & Fuels
Umer Mehmood, Abdulrehman Ishfaq, Muhammad Sufyan
Summary: The study aims to replace expensive and rare platinum with conventional materials for DSSCs. Nanocomposites of MWCNTs and TiO2 can improve the photovoltaic performance of DSSCs, with the concentration of MWCNTs playing a significant role in optimizing efficiency.
Article
Chemistry, Inorganic & Nuclear
Anurag Roy, M. J. S. Mohamed, M. A. Gondal, Tapas K. Mallick, Asif Ali Tahir, Senthilarasu Sundaram
Summary: Dye-sensitized solar cells (DSSCs) can achieve enhanced performance by engineering the materials at the interface of different device components. The most commonly used photosensitizers for DSSCs are Ru (II) polypyridyl-based synthetic dyes, but they are expensive. This study explores the use of natural and metal-free organic dyes as alternatives to synthetic dyes, and introduces Cu-doped CdS as a co-sensitizer to improve light-harvesting. The introduction of Cu leads to a broad absorption range and enhances optical interaction with the N719 dye, resulting in improved photocurrent density and overall performance of the DSSC.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Energy & Fuels
M. Younas, M. A. Gondal
Summary: In this study, economical and efficient dye sensitized solar cells were fabricated using single wall carbon nanotube and titanium dioxide nanocomposite as photoanode and single wall carbon nanotube as Platinum free counter electrode (CE). The attachment and distribution of single wall carbon nanotube within/among the titanium dioxide components was confirmed using various techniques. The catalytic activity and stability of single wall carbon nanotube as catalyst in the CE of the fabricated DSSCs were evaluated. The results showed significant improvements in light harvesting efficiency and overall power conversion efficiency.
Article
Chemistry, Multidisciplinary
Ying Meng, Wen Wang, Chunqiu Zhang, Jixin Yao, Changzheng Xie, Zhenfa Zi, Changcheng Lin, Shibin Lu, Guang Li
Summary: An improved synthesis method was reported for the preparation of NiO/Fe2O3@NC composite as the counter electrode in dye-sensitized solar cells. The composite exhibited superior electrochemical properties, achieving a power conversion efficiency of 8.69%, higher than that of NiO@NC (6.51%), Fe2O3@NC (6.22%), and commercial Pt counterparts (7.52%). This study is of great significance for the development of efficient electrocatalysts.
Article
Chemistry, Multidisciplinary
Wei-Hao Chiu, Kun-Mu Lee, Vembu Suryanarayanan, Jen-Fu Hsu, Ming-Chung Wu
Summary: This study compares the device structures and photoanode designs of small and large size DSSC cells, highlighting the importance of TiO2 electrode optimization and the effects of factors such as dye concentration, soaking temperature, and electrolyte injection method on cell efficiency. By improving these processes, the module efficiency and performance of the DSSC cells have been successfully enhanced.
Article
Chemistry, Physical
Yunfei Jiao, Shuaishuai Liu, Zhongjin Shen, Le Mao, Yongjie Ding, Dan Ren, Felix Thomas Eickemeyer, Lukas Pfeifer, Dapeng Cao, Wenjuan Xu, Juan Song, Baoxiu Mi, Zhiqiang Gao, Shaik M. Zakeeruddin, Wei Huang, Michael Gratzel
Summary: Heteroaromatic units are commonly used as pi-spacers for sensitizers in dye-sensitized solar cells. The type of pi-spacer strongly influences the solar to electric power conversion efficiency of organic dyes, with electron-rich pi-spacers leading to higher efficiency. Molecular engineering plays a crucial role in developing high efficiency organic dyes for DSSCs.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Review
Chemistry, Multidisciplinary
Zhemin Li, Qizhao Li, Chengjie Li, Yongshu Xie
Summary: Dye-sensitized solar cells (DSSCs) have the advantages of environmental friendliness, easy fabrication, and rich colors, making them promising for applications in architectural decoration and power supply for low energy devices. However, porphyrin dyes used in DSSCs still suffer from absorption defects and aggregation tendencies. In order to address these issues, various approaches have been developed to achieve panchromatic absorption and high efficiency.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Multidisciplinary
Xugeng Guo, Wenpeng Wu, Yuanyuan Li, Jinglai Zhang, Li Wang, Hans Agren
Summary: Upconversion technology has been increasingly used in solar cells to improve efficiency by harvesting infrared light from the sun. Research has focused on fundamental principles of upconversion, with techniques like incorporating upconverting nanophosphors directly into photoanodes and introducing plasmonic metal nanoparticles showing promising results. Other methods such as utilizing microlenses and organic IR antennas for field enhancement have also been explored.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Min-Jung Song, Joon-Hyung Jin
Summary: In this study, oxygenated multi-walled carbon nanotubes (OMWNTs) were used as additives to enhance the performance of photoanodes and photocathodes, leading to an increase in the energy conversion efficiency of the photoelectrochemical cell. The synergistic effect of OMWNT-modified photoanode and photocathode contributed significantly to the improved efficiency.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Sabir Ali Siddique, Muhammad Arshad, Sabiha Naveed, Muhammad Yasir Mehboob, Muhammad Adnan, Riaz Hussain, Babar Ali, Muhammad Bilal Ahmed Siddique, Xin Liu
Summary: The study designed five zinc phthalocyanine-based donor materials and used DFT to investigate their optoelectronic properties for dye-sensitized solar cells, showing that T1 may exhibit superior performance in this application.
Article
Chemistry, Physical
Yang Gao, Shenbin Dai, Jingzhi Zhu, Liang Wu, Liang Han, Yujin Li, Qing Ye, Yanhong Cui
Summary: Four novel A-D-pi-A pyridoquinazolinone-containing triphenylamine dyes were synthesized and applied in dye-sensitized solar cells (DSSCs). The incorporation of additional pyridoquinazolinone unit increased the charge recombination resistance and improved the Voc. The introduction of thiophene bridge broadened and red-shifted the absorption region, leading to enhanced light-harvesting ability, IPCE, and Jsc. Consequently, the dye with double pyridoquinazolinone units and thiophene bridge exhibited the highest photoelectric conversion efficiency of 5.19%.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
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.