Review
Chemistry, Multidisciplinary
Sikandar Aftab, Muhammad Zahir Iqbal, Sajjad Hussain, Fahmid Kabir, Hosameldin Helmy Hegazy, Burragoni Sravanthi Goud, Muhammad Aslam, Fan Xu
Summary: This review article provides an overview of MXene-modified electrodes in dye-sensitized solar cells (DSSCs). MXenes, a type of two-dimensional transition metal carbides or nitrides, have remarkable properties that enhance the performance of DSSC electrodes. The article analyzes the use of MXenes integrated with other materials for electrode modification in photovoltaics, and discusses the impact of different deposition techniques on performance. MXene-modified electrodes have the potential to improve the performance and efficiency of DSSCs, making them a promising material for renewable energy applications.
Article
Chemistry, Multidisciplinary
Ha Lim Cha, Seungyoon Seok, Hyun Jo Kim, Suresh Thogiti, Burragoni Sravanthi Goud, Gyuho Shin, Lee Ji Eun, Ganesh Koyyada, Jae Hong Kim
Summary: A new DSSC strategy using multiple dyes for full spectrum absorption was developed, with CO-DACE devices showing the highest efficiency compared to traditional DSSCs. This is attributed to enhanced IPCE and J(sc), highlighting the advantage of DACE electrode in maximizing incident light utilization.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Wei-Min Tang, Chih-Chung Hu, Meng-Lin Tsai, Chung-Chen Tsao, Chun-Yao Hsu
Summary: This study focuses on the fabrication of dye-sensitized solar cells with a photoanode consisting of mesoporous TiO2 and V2O5 nanoparticles. By rinsing with acetone solution, the specific surface area and dye adsorption amount of TiO2 can be increased, leading to improved performance.
Article
Chemistry, Physical
Wen-Feng Lai, Pei-Ling Chao, Xin-Yu Lin, Yin-Pei Chen, Jih-Hsin Liu, Tz-Feng Lin, Wei-Chou Hsu, Chia-Yi Huang
Summary: In this study, a one-dimensional protrusive TiO2 strip array was fabricated using chemical and physical methods. A porous semiconductor layer was coated on the strip array. The results showed that the DSSC with the TiO2 strip array had a higher energy conversion efficiency, which can be attributed to the large surface area of the protrusive structure and its specific electron transport paths.
Article
Physics, Multidisciplinary
Yu-Chih Chiang, Chia-Rong Lee, Chia-Yi Huang
Summary: A 90-nm-thick TiO2 grid was fabricated using photolithography, sputtering, and lift-off process. A nanoporous film was deposited on the TiO2 grid, which induced a protrusive structure. Experimental results showed that introducing the TiO2 grid into a dye-sensitized solar cell increased its power conversion efficiency by 25%. This improvement can be attributed to the large surface area and directional electron transport channels of the protrusive structure.
Article
Chemistry, Physical
Tamasgen Fikadu Yadeta, Toyoko Imae
Summary: The carbon quantum dot (C-dot) acts as a photosensitizer and dye-adsorber. Adding C-dot to TiO2/NiO(10 wt%) nanocomposites significantly enhances the power conversion efficiency (PCE) of dye-photosensitized solar cells (DSSCs) up to 2.88 times. However, in TiO2/CuO/C-dot nanocomposites, the addition of C-dot leads to a decrease in PCE.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Chun-Hao Chang, Chia-Han Chuang, De-Yang Zhong, Jun-Cheng Lin, Chia-Chi Sung, Chun-Yao Hsu
Summary: This study focused on enhancing the optoelectronic performances of dye sensitized solar cells (DSSC) by mixing acetylacetone, graphene powder and TiO2 mesoporous. The addition of graphene and optimization of parameters led to improvements in efficiency and performance of DSSCs. Using a different substrate material also resulted in increased photovoltaic efficiency.
Article
Chemistry, Multidisciplinary
Suruthi Priya Nagalingam, Andrews Nirmala Grace
Summary: This study focuses on the fabrication of a poly(3,4-ethylene dioxythiophene) decorated MXene composite electrode and tests its performance as a counter electrode in dye-sensitized solar cells. The results show that the composite electrode exhibits good electrocatalytic activity and charge transfer kinetics in the iodide/triiodide electrolyte, surpassing the performance of traditional counter electrodes. The 15-day stability investigation demonstrates that the composite electrode has good corrosion resistance. Therefore, the composite electrode shows potential as a substitute for platinum.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Engineering, Electrical & Electronic
S. Rajkumar, M. R. Venkatraman, K. Suguna, P. Karuppasamy, M. Senthil Pandian, P. Ramasamy
Summary: In this study, a green synthesis approach was used to dope silver (Ag) ions onto the TiO2 lattice using grapefruit extracts as a solvent, resulting in the preparation of dye-sensitized solar cells with improved performance. The results showed that the TiO2 nanoparticles with 5% silver doping exhibited high efficiency for both natural and commercial dyes.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Tomohiko Inomata, Ayaka Matsunaga, Guangzhu Jin, Takuma Kitagawa, Mizuho Muramatsu, Tomohiro Ozawa, Hideki Masuda
Summary: The study found that phosphonium-type ionic liquids can be effective anti-aggregation agents in DSSCs, improving the photovoltaic performance of dye-sensitised solar cells.
Review
Chemistry, Multidisciplinary
Ana Belen Munoz-Garcia, Iacopo Benesperi, Gerrit Boschloo, Javier J. Concepcion, Jared H. Delcamp, Elizabeth A. Gibson, Gerald J. Meyer, Michele Pavone, Henrik Pettersson, Anders Hagfeldt, Marina Freitag
Summary: Dye-sensitized solar cells (DSCs) and dye-sensitized photoelectrochemical cells (DSPECs) have seen a revival in recent years as they offer unique properties such as low cost, non-toxic materials, colorfulness, transparency, and efficiency in low light conditions. This review covers advancements in DSC technology over the past decade, including theoretical studies, characterization techniques, materials, applications, and commercialization efforts by various companies.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Chemistry, Physical
R. Sasikala, M. Kandasamy, S. Suresh, V Ragavendran, V Sasirekha, J. M. Pearce, S. Murugesan, J. Mayandi
Summary: In this study, Ag-SrTiO3NC nanocomposites with varying weight percentages of Ag nanoparticles were synthesized, characterized, and integrated into dye-sensitized solar cells (DSSCs). The Ag-SrTiO3 NC photoanode loaded with 2.5 wt% Ag NPs exhibited enhanced photovoltaic performance in DSSCs, attributed to factors such as high dye loading, improvement in visible light harvesting, and fast photo-induced electron transfer caused by the plasmonic Ag NPs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Fengjuan Miao, Fuchen Chu, Bingcheng Sun, Bairui Tao, Peng Zhang, Yu Zang, Paul K. Chu
Summary: This study presents the design and fabrication of a photoanode composed of Au/SnS/TiO2 sensitized with natural dye for dye-sensitized solar cells (DSSCs). By calcination, a layer of spherical nano-TiO2 is prepared, and a layer of nano-SnS is deposited on the TiO2 photoanode using the continuous ion layer adsorption reaction (SILAR). The sensitized Au nanoparticles exhibit enhanced localized surface plasmon resonance (LSPR) effects and electron trapping ability, resulting in improved electron mobility and reduced electron recombination in the DSSC.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Hina Pervaiz, Zuhair S. Khan, Nadia Shahzad, Ghulam Ali, Naseem Iqbal, Sofia Javed
Summary: This study introduces a method for synthesizing and depositing organic/inorganic composite ink for the preparation of counter electrodes in flexible dye-sensitized solar cells. The results demonstrate that the composite ink-based counter electrodes exhibit higher catalytic activity, power conversion efficiencies, and redox diffusion rate compared to traditional counter electrodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Environmental Sciences
Peerzada Ajaz Ahmad, Feroz Ahmad Mir
Summary: This study focuses on the performance analysis of a titanium dioxide semiconductor-based dye-sensitized solar cell (DSSC). The characteristics of the dye, including optical band gap and emission, were investigated using various spectroscopy techniques. The energy levels of the sensitizer were estimated through cyclic voltammograms. The study found that the dye performed well in terms of short circuit current density and power conversion efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Editorial Material
Infectious Diseases
Hou-wei Du, Jun-nian Chen, Xiao-bin Pan, Xiao-ling Chen, Yixian-Zhang, Shuang-fang Fang, Xiao-qing Li, Pin-cang Xia, Lei Gao, Hai-long Lin, Li-min Chen, Nan Liu
Summary: The prevalence and outcomes of re-activation of COVID-19 in discharged patients remain poorly understood. A study on 126 confirmed cases found that a small number of recovered patients may still carry the virus even after meeting discharge criteria.
EUROPEAN JOURNAL OF CLINICAL MICROBIOLOGY & INFECTIOUS DISEASES
(2021)
Article
Infectious Diseases
Hou-Wei Du, Shuang-Fang Fang, Sang-Ru Wu, Xiao-Ling Chen, Jun-Nian Chen, Yi-Xian Zhang, Hua-Yao Huang, Han-Han Lei, Rong-Hua Chen, Xiao-Bin Pan, Xiao-Qing Li, Pin-Cang Xia, Zhen-Yang Zheng, Ling-Luo, Hai-Long Lin, Li-Min Chen, Nan Liu
Summary: The study found that a small proportion of discharged COVID-19 patients may have an incomplete functional outcome at a 6-month follow-up, indicating the need for intervention strategies.
BMC INFECTIOUS DISEASES
(2021)
Article
Geochemistry & Geophysics
Junnian Chen
Summary: The tensile strength difference caused by the size of conglomerate gravel has an important impact on the hydraulic fracture propagation in the conglomerate reservoir.
Article
Chemistry, Multidisciplinary
Ke Fan, Haiyuan Zou, Yunxuan Ding, N. V. R. Aditya Dharanipragada, Lizhou Fan, A. Ken Inge, Lele Duan, Biaobiao Zhang, Licheng Sun
Summary: Water oxidation is a crucial reaction for renewable energy conversion and storage. This research introduces a unique and efficient approach of sacrificial W to prepare CoFe (oxy)hydroxides with abundant active species for the oxygen evolution reaction (OER). The experiments and theoretical calculations demonstrate that the sacrificial W induces metal cation vacancies, facilitating the in situ transformation of the intermediate metal hydroxide to CoFe-OOH with more high-valence Co(III), leading to abundant active species for OER. The Co(III)-rich environment gives the in situ formed CoFe oxyhydroxide high catalytic activity for OER.
Article
Multidisciplinary Sciences
Luanfeng Lin, Xiaoling Chen, Junnian Chen, Xiaobin Pan, Pincang Xia, Hailong Lin, Houwei Du
Summary: By using ROC curve analysis and a COX proportional hazards regression model, it was found that COVID-19 patients with higher levels of sCys C are more likely to develop severe illness.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Physical
Dinghua Zhou, Min He, Yunxuan Ding, Jiaguo Yu, Ke Fan, Licheng Sun
Summary: Precious metals, such as Ir, Ru, and Pt, are widely used as benchmark catalysts for water splitting in acidic media due to their stability and activity. However, their high cost and scarcity limit their large-scale applications. In this study, a catalyst containing a low content of IrW alloy on hierarchical WO3 nanosheet arrays was synthesized. The composite catalyst exhibited superior water oxidation and proton reduction performance, showing promising bifunctionality for overall water splitting. This research provides a strategy to design highly active and stable catalysts with low loading of noble metals for acidic water splitting.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Cell Biology
Min Chen, Junnian Chen, Weibin Huang, Caiting Li, Haoteng Luo, Zhiqiang Xue, Ying Xiao, Qiong Wu, Cunrong Chen
Summary: This study aimed to investigate the role of exosomes from iMSCs in MI induced by SAP. The results revealed that exosomes could promote cell viability and improve myocardial ischemia through activating Akt/Nrf2/HO-1 signaling pathway. Exosomes also enhanced cardiac function and suppressed oxidative status in the SAP model. In addition, exosomes increased the expression of vWF and VEGF through activating Nrf2/HO-1 signaling pathway. These findings provide the first evidence of the potential application of exosomes from iMSCs in treating MI induced by SAP.
Article
Nanoscience & Nanotechnology
Guoliang Tong, Yue Chen, Xingfu Xiao, Junjie Tang, Biqi He, Sheng Cao, Mingkai Li, Yunbin He, Junnian Chen
Summary: This study systematically investigates the influence of organic cations on the structural, optical, and in-plane charge transport properties of two-dimensional (2D) Dion-Jacobson (DJ) lead bromide perovskites. The results show that different organic cations have significant effects on the performance of perovskites, with DMPDPbBr4 exhibiting a lower bandgap and higher in-plane charge collection efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Zhiwei Zhao, Zhongliao Wang, Jinfeng Zhang, Chunfeng Shao, Kai Dai, Ke Fan, Changhao Liang
Summary: In this study, an In-O-Cd bond-modulated S-scheme heterojunction of In2O3/CdSe-DETA was synthesized, which accelerated the photogenerated electron transfer. The oxygen vacancies (Vo) of In2O3 were found to have an electron capture effect. The synergistic effect of this structure extracted and rapidly transferred electrons to surface-active sites, improving the electronic coupling of CO2. This research provides new insights into photocatalytic CO2 reduction by precisely adjusting the electron transfer pathway and shortening the electron transfer distance.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Zhiyong Fang, Fuhua Li, Mei Wang, Fusheng Li, Xiujuan Wu, Ke Fan, Qing Tang, Licheng Sun, Peili Zhang
Summary: In this study, an electrocatalytic cleavage method for the C alpha-C beta bonds of beta-O-4 (a lignin model) was reported using a dodecyl sulfate-intercalated cobalt sulfide nanocone catalyst. The noble-metal-free nanocones served as an electrocatalyst to selectively oxidize beta-O-4 to aldehydes or carboxylates with excellent yields (90-97%) under controlled potential electrolysis. Furthermore, the electrochemical upgrading of lignin resulted in aryl aldehydes or carboxylic acids with yields of 21.4% and 23.9%, respectively. This approach offers the advantages of low-cost and stable electrocatalyst, high conversion of beta-O-4, high selectivity of products, and mild reaction conditions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Materials Science, Multidisciplinary
Jiahui Hua, Zhongliao Wang, Jinfeng Zhang, Kai Dai, Chunfeng Shao, Ke Fan
Summary: In this work, highly dispersed MOF-BiOBr/Mn0.2Cd0.8S (MOFBiOBr/MCS) S-scheme heterojunctions with high photocatalytic CO2 reduction performance were constructed. The intimate contact between the MCS nano-spheres and the nanosheet-assembled MOF-BiOBr rods, driven by the internal electric field, accelerates the charge transfer along the S-scheme pathway. The optimum MOF-BiOBr/MCS shows excellent activity in CO2 reduction, affording a high CO evolution rate of 60.59 µmol h-1 g-1.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Yufei Jia, Yunxuan Ding, Tao Song, Yunlong Xu, Yaqing Li, Lele Duan, Fei Li, Licheng Sun, Ke Fan
Summary: This study investigates the effect of dynamic stability on CO2RR by using Zn-doped Cu2O nano-octahedrons, and confirms the Zn leaching and redeposition at the catalyst surface, leading to abundant Cu-Zn bimetallic sites. Mechanism analysis shows that the OHC-CHO pathway can function as the C-C coupling process, and the introduction of Zn effectively lowers the energy barrier for CO2RR to C2H4. This research provides profound insight into the surface dynamic reconstruction of amphoteric metal-containing electrocatalysts and guides the rational design of high-performance electrocatalysts for CO2RR.
Article
Chemistry, Inorganic & Nuclear
Ximeng Xu, Yingzheng Li, Chang Liu, Peili Zhang, Ke Fan, Xiujuan Wu, Yu Shan, Fusheng Li
Summary: A molecular dye and a molecular catalyst were loaded onto the surface of a mesoporous LaFeO3 (LFO) film via layer-by-layer assembly. This assembly relied on the coordination of phosphates and Zr4+. The (NiP-4 + PQA-6)@LFO photocathode, after assembling six layers of the dye and four layers of the catalyst, exhibited a significant photocurrent for light-driven H-2 generation.
DALTON TRANSACTIONS
(2023)
Article
Immunology
Junnian Chen, Bang Liu, Houwei Du, Hailong Lin, Cunrong Chen, Shanshan Rao, Ranjie Yu, Jingjing Wang, Zhiqiang Xue, Yixian Zhang, Yanghuang Xie
Summary: PSI and CURB-65 scales may be useful in predicting the severity and mortality of COVID-19 pneumonia. There are significant differences in the scores distribution among the three scales.
EUROPEAN JOURNAL OF INFLAMMATION
(2021)
Article
Respiratory System
Qilin Yuan, Hua-yao Huang, Xiao-ling Chen, Rong-hua Chen, Yixian Zhang, Xiao-bin Pan, Jun-nian Chen, Nan Liu, Houwei Du
Summary: The study found that pre-existent physical inactivity was associated with an increased risk of severe COVID-19, suggesting that individuals should engage in physical activity to lower the risk of experiencing severe illness when infected with COVID-19.
THERAPEUTIC ADVANCES IN RESPIRATORY DISEASE
(2021)
