Article
Chemistry, Multidisciplinary
Vasu Prasad Prasadam, Ali Margot Huerta Flores, Naoufal Bahlawane
Summary: The porous composite coatings consisting of CNT-TiO2 core-shell structures show superior performance in photo-electrochemical water splitting reactions, with a photocurrent improvement factor of over 400%. This enhancement is attributed to the increased interface area with the electrolyte and fast withdrawal of electrons, while the strong absorption properties of CNT severely limit light penetration depth.
Article
Chemistry, Analytical
Fatih Tezcan, Meltem Kahya Dudukcu, Gulfeza Kardas
Summary: In this study, alpha-Cr2O3 core-shell was used to protect BiVO4 from photo corrosion for photoelectrochemical hydrogen production. The results showed that coating BiVO4 nanoparticles with alpha-Cr2O3 at different pH values can reduce the photocorrosion of BiVO4 and improve the performance of photoelectrochemical hydrogen production.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Environmental
Changhao Wang, Yahao Li, Changdong Gu, Lingjie Zhang, Xiuli Wang, Jiangping Tu
Summary: This study presents a facile method to fabricate Co@CoO core/shell nanowire arrays as an efficient electrocatalyst for HER. The nanowire arrays exhibit superior catalytic activity with ultra-low overpotential in alkaline solution and excellent long-term stability, making them promising for hydrogen evolution applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Sourav Kumar Kajli, Debdutta Ray, Somnath C. Roy
Summary: One-dimensional nanostructures such as nanowires exhibit enhanced photoresponse compared to bulk materials due to unidirectional transport reducing recombination and scattering of charge carriers. CuO and Cu2O are promising transition metal oxides for efficient UV and visible light detection, forming type-II heterojunction for charge separation. Core-shell CuO/Cu2O nanowires show superior performance in terms of responsivity and detectivity, attributed to the Ohmic junction at Pd-Cu2O interface and type II heterojunction at CuO/Cu2O interface.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Chemical
Xiangbo Feng, Lvwei Sun, Wei Wang, Yuzhen Zhao, Jian-Wen Shi
Summary: A new CdS@ZnO core-shell nanorod array was successfully constructed by atomic layer deposition (ALD) for efficient H2 evolution from photoelectrochemical water splitting. The CdS@ZnO200 obtained after 200 ALD cycles showed a significantly enhanced PEC H2 evolution rate of 21.64 μmol·h-1·cm-2, which was about 9.4 times higher than pristine CdS NRAs. The improved performance could be attributed to the Z-scheme charge transfer mechanism between CdS core and ZnO shell, as well as the reduction of charge carrier transfer resistance due to the close contact between the two semiconductors.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Lu Wang, Junhua You, Yao Zhao, Wanting Bao
Summary: The core-shell structured CuO@NiCoMn-LDH electrode was synthesized and the synergistic effect between CuO nanowires and NiCoMn-LDH nanosheets was found to greatly enhance the electrode materials. The optimized CuO@NiCoMn-LDH electrode exhibited excellent electrochemical performance, with high specific capacity and good cycling stability. Furthermore, an asymmetric supercapacitor (ASC) was constructed using the CuO@NiCoMn-LDH electrode as the positive electrode, demonstrating its potential for practical applications in energy storage devices.
DALTON TRANSACTIONS
(2022)
Review
Chemistry, Multidisciplinary
Roozbeh Siavash Moakhar, Seyed Morteza Hosseini-Hosseinabad, Saeid Masudy-Panah, Ashkan Seza, Mahsa Jalali, Hesam Fallah-Arani, Fatemeh Dabir, Somayeh Gholipour, Yaser Abdi, Mohiedin Bagheri-Hariri, Nastaran Riahi-Noori, Yee-Fun Lim, Anders Hagfeldt, Michael Saliba
Summary: This article comprehensively reviews the recent advancements in CuO-based photoelectrodes for PEC water-splitting applications, highlighting their high activity and promising physicochemical properties. Various synthesis methods, characterization techniques, and fundamental factors of CuO-based photoelectrodes are discussed in detail. Additionally, the PEC properties of CuO/2D materials are also evaluated, demonstrating their potential as nanocomposites for photocurrent-generating devices.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Haifeng Yang, Guangcheng Yang, Xiaodong Li, Hebin Bao, Yanjing Yang, Xiaogang Guo, Zhiqiang Qiao, Xueming Li
Summary: The CuO nanowires prepared by electrochemical and chemical etching methods have high surface density and a homogeneous structure, beneficial for the contact between Al and CuO. The nano-thermite prepared by electrochemical-sputtering method shows 8 times heat release per unit area compared to the chemical-sputtering method, with significantly reduced activation energy and easier ignition.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Ting-Hsuan Lai, Chun-Wen Tsao, Mei-Jing Fang, Jhen-Yang Wu, Yu-Peng Chang, Yi-Hsuan Chiu, Ping-Yen Hsieh, Ming-Yu Kuo, Kao-Der Chang, Yung-Jung Hsu
Summary: In this study, Au@Cu2O core-shell and Au@Cu2Se yolk-shell nanocrystals were used as photocatalysts in photoelectrochemical water splitting and photocatalytic hydrogen production. The enhanced charge separation and additional charge carrier generation were achieved through the combination of the Au core and shells, as well as the localized surface plasmon resonance effect of Au. The improved interfacial charge transfer resulted in higher photocurrent and photocatalytic activity compared to the pure counterpart samples.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Hoang Nhat Hieu, Nguyen Van Nghia, Nguyen Minh Vuong, Loan Le Thi Ngoc, Thanh Hai Phan
Summary: We reported a rational and simple approach to fabricate heterojunction CdS/CuO/ZnO branched nanowires as photoelectrodes for highly efficient water splitting. The optimized photoelectrode showed significantly enhanced photoconversion efficiency of 3.9% under solar simulation, which is much higher than other photoelectrodes.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Renjie Wang, Shaobo Cheng, Srinivas Vanka, Gianluigi A. Botton, Zetian Mi
Summary: This study presents a method for fabricating InGaN solar cells on a Si substrate with improved open-circuit voltage and energy conversion efficiency, using Ti-mask selective area growth to form nanowire arrays for enhanced electrical and thermal conduction. The core-shell structure of the AlInGaN active segment suppresses nonradiative surface recombination and stable output characteristics were achieved under 30-Sun illuminations.
Article
Engineering, Chemical
Qingmei Wang, Yanfang Zhang, Yang Liu, Keke Wang, Weixin Qiu, Long Chen, Jie Li, Wenzhang Li
Summary: In this study, Cu2O-In core-shell nanowires were constructed using physical vapor deposition to enhance the photocathode performance for PEC CO2 reduction. The Schottky junction effectively promoted charge transfer and separation, while the introduction of In improved the catalytic activity. The CO production rate reached 75.94 mu mol cm-2 h-1 with a consistent Faradaic efficiency of 82% over 12 hours.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Review
Chemistry, Multidisciplinary
Jin-Bo Pan, Sheng Shen, Lang Chen, Chak-Tong Au, Shuang-Feng Yin
Summary: Photoelectrochemical water splitting is a promising solution for solar energy conversion and storage, but the design of efficient photoanodes faces challenges. All known photoanode materials have drawbacks, with core-shell configurations showing potential for improved activity and stability. However, the mechanism for performance improvement still needs further examination.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Milan Babu Poudel, Natarajan Logeshwaran, Sampath Prabhakaran, Ae Rhan Kim, Do Hwan Kim, Dong Jin Yoo
Summary: This study reports a heterostructure of molybdenum selenide-nickel selenide core-shell nanowire arrays on nickel foam, which exhibits excellent catalytic activity and stability for hydrogen evolution reaction in alkaline and natural seawater conditions, providing a novel design strategy for platinum-group-metal-free catalysts.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Jianhua Han, Haiyang Xing, Qinggong Song, Huiyu Yan, Jianhai Kang, Yanrui Guo, Zhifeng Liu
Summary: The novel ZnO@CuO core-shell heterojunction photoanode modified with ZnFe-LDH cocatalyst showed enhanced light harvesting, charge separation, and surface oxidation reactions, resulting in a significantly higher photocurrent density compared to the pristine ZnO photoanode. This demonstrates the potential of using core-shell nanorod arrays coupled with ZnFe-LDH as effective and low-cost photoelectrodes.
DALTON TRANSACTIONS
(2021)
