Review
Chemistry, Physical
Sang Eon Jun, Jae Kwan Lee, Sangwoo Ryu, Ho Won Jang
Summary: Single atom catalysts (SACs) exhibit remarkable catalytic activity and excellent atomic utilization efficiency in photoelectrocatalytic water splitting. This review summarizes the representative characterization techniques and recent development in SACs for efficient photoelectrochemical water splitting.
Article
Chemistry, Physical
Hana Kmentova, Olivier Henrotte, Rambabu Yalavarthi, Mareike Haensch, Christian Heinemann, Radek Zboril, Patrik Schmuki, Stepan Kment, Alberto Naldoni
Summary: The highest photocurrent density was achieved for a BiVO4/CdS composite due to enhanced optical absorption properties and charge separation at the heterojunction between BiVO4 and CdS. Additionally, the photostability was substantially increased by protecting the BiVO4/CdS photoanode with a CoOx layer, resulting in a highly stable photocurrent density of about 5 mA cm(-2).
Article
Chemistry, Physical
Huimin Geng, Pengzhan Ying, Yulong Zhao, Xiuquan Gu
Summary: By dual modification with Au nanoparticles and FeOOH nanoneedles on BiVO4 surface, the FeOOH/Au/BiVO4 photoanode exhibited significantly enhanced performance, with a 3.74 times increase in photocurrent density and a significant increase in H-2 yield. The improved performance can be attributed to the localized surface plasmon resonance effect of Au NPs and surface modification of FeOOH.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Energy & Fuels
Zhiliang Wang, Yuang Gu, Lianzhou Wang
Summary: This paper conducts a comparison and brief discussion on the differences between PEC and PV-EC in terms of efficiency, cost, and stability. It is suggested that PEC should focus on high solar-to-hydrogen efficiency based on cheap semiconductors to maintain its competitiveness in the technological race of sustainable hydrogen production.
FRONTIERS IN ENERGY
(2021)
Article
Multidisciplinary Sciences
Michael Volokh, Menny Shalom
Summary: In this article, the use of polymeric carbon nitride (CN) materials as light absorbers in photoelectrochemical cells for water-splitting is described. The deposition techniques and procedures for CN in the laboratory are discussed, along with the merits and shortcomings of resulting layers. The development of high photoelectrochemical water-splitting activity in photoanodes using CN as photoabsorbers is demonstrated, and the future prospects of this field are presented.
ANNALS OF THE NEW YORK ACADEMY OF SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Fariba Fathirad, Fatemeh Samareh, AliReza Bahador
Summary: CdSe@CdS/GONRs nanocomposites with different content of graphene nanoribbons were synthesized using the microwave method. Comprehensive characterization confirmed the structure and properties of the nanocomposites. The CdSe@CdS/GONRs(5%) photocatalyst showed excellent hydrogen evolution reaction properties, including low onset overpotential, slight Tafel slope, and excellent stability, due to the synergistic effect of GONRs and CdSe@CdS.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Multidisciplinary
Jan Pastika, Filipa M. Oliveira, Vlastimil Mazanek, Zdenek Sofer, Rui Gusmao
Summary: Metal phosphorous trichalcogenides (M2P2X6 or MPX3) have promising applications in optoelectronics, photoelectrocatalysis, and water-splitting reactions due to their wide bandgap. The divalent cations of alkaline earth metals can also be constituents in MPX3 2D layered structures. MgPSe3 shows the best photoelectrochemical performance in hydrogen evolution and oxygen evolution reactions.
Article
Engineering, Environmental
Siyuan Yang, Haojian Guan, Yongming Zhong, Jinxia Quan, Na Luo, Qiongzhi Gao, Yuehua Xu, Feng Peng, Shengsen Zhang, Yueping Fang
Summary: The combination of CdS with state-of-the-art transition-metal electrocatalyst has been found to be an effective strategy for enhancing the photoactivity and photostability of CdS for PEC water splitting. The study demonstrates that CdS@Ni3S2 is an efficient photoanode for synergistically photo-electrical catalytic hydrogen production, achieving a high solar-to-hydrogen efficiency.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Hoang Nhat Hieu, Van Nghia Nguyen, Vuong Minh Nguyen, Thanh Hai Phan
Summary: 3D-ordered porous CdS/AgI/ZnO nanostructures were designed for high-performance photoelectrodes in PEC water-splitting. They exhibited advantages of large surface area, high absorption in visible-light, fast carrier separation and transportation due to a ladder-like band arrangement. The nanostructures were fabricated using a three-stage experiment involving electrochemical deposition, wet chemical method, and deposition-precipitation. The highest efficiency achieved for the CdS/AgI/ZnO nanostructures was 5.2%, significantly higher than other photoelectrodes tested. The improved performance is attributed to enhanced charge separation and transport caused by the unique band arrangement in the ternary nanostructures.
Article
Chemistry, Physical
Lixia Sun, Jianhua Sun, Xi Sun, Shouli Bai, Yingying Zhao, Ruixian Luo, Dianqing Li, Aifan Chen
Summary: A ternary photoanode of ZnO/CdO heterojunction decorated with reduced graphene oxide (rGO) was fabricated by a simple and effective electrochemical deposition and thermal decomposition method. The photoanode demonstrated improved visible light absorption range and photocurrent density compared to pure ZnO and ZnO/CdO photoanodes. The enhancement is attributed to the architecture of semiconductor heterojunctions and the decoration of rGO nanosheets.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Mauricio A. Melo, Igor M. Brito, Joao V. S. B. Mello, Pamela S. M. Rocha, Isabela A. A. Bessa, Braulio S. Archanjo, Fabio S. Miranda, Ricardo J. Cassella, Celia M. Ronconi
Summary: Producing solar fuels through semiconductor-based photocatalytic water splitting is a promising solution for global adoption of renewable energy sources. This study introduces a simple method for preparing nanostructured hematite and niobium-doped hematite nanoparticles, which can be assembled into thin films for use as photoanodes in photoelectrochemical cells. The optimization of film composition and thickness significantly improves the photocurrent and enhances the efficiency of water splitting, making these materials more economically competitive.
Article
Chemistry, Physical
Lei Jin, Haiguang Zhao, Zhiming M. Wang, Federico Rosei
Summary: This article summarizes the latest progress in tailoring the materials, structure, and performance of QDs-based PEC H-2 generation, and discusses the impact of specific features of QDs and charge generation and transfer on the performance of PEC devices. Future challenges and opportunities for high-efficiency and stable QDs-based PEC applications are also discussed.
ADVANCED ENERGY MATERIALS
(2021)
Review
Energy & Fuels
Weixin Qiu, Yang Liu
Summary: The use of photocatalysis and photoelectrocatalysis can efficiently utilize solar energy, addressing the issues of energy depletion and environmental pollution. Stannous tungstate materials, with their narrow band gap energy and unique band structure, are considered favorable candidates for this application. However, their practical application is still constrained by excessive electron-hole recombination and poor stability. This review presents basic information on crystal and electronic structures, and summarizes various strategies to enhance the photocatalytic and photoelectrochemical properties of stannous tungstate materials, as well as discussing the achievements and difficulties in relevant studies.
Article
Materials Science, Multidisciplinary
Xichen Yu, Qingqing Xing, Xiaoping Zhang, Hanlin Jiang, Fengren Cao
Summary: Rationally designing heterojunction structures and tuning related parameters to fabricate CdS nanoparticle/TiO2 nanorod array heterostructures led to significantly enhanced photoelectrochemical performance, attributed to improved electron-hole transport and separation ability, stronger light absorption, and higher photoactivity.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Mabrook S. Amer, Prabhakarn Arunachalam, Mohamed A. Ghanem, Abdullah M. Al-Mayouf, Mark T. Weller
Summary: Photoelectrochemical (PEC) solar water splitting using semiconductor electrodes is a promising method for converting solar energy into hydrogen fuel. In this study, strontium titanium oxynitride (STON) with anion vacancies was prepared via solid phase synthesis and used as a photoelectrode for alkaline water oxidation. The PEC efficiency was improved by depositing a cobalt-phosphate (CoPi)-based co-catalyst on the surface of the STON electrode. The enhanced oxygen evolution kinetics and reduced surface recombination of photogenerated carriers contribute to the observed PEC enrichment. Additionally, the CoPi modification of perovskite-type oxynitrides presents a new avenue for developing efficient and stable photoanodes in solar-assisted water-splitting reactions.
Article
Chemistry, Physical
Rajiv Ranjan, Manoj Kumar, A. S. K. Sinha
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Materials Science, Multidisciplinary
Kaushal Kumar Mahato, Indu Yadav, RajeshKumar Singh, Monika, Bhisham Narayan Singh, Santosh Kumar Singh, Biswajit Ray, Manoj Kumar, Nira Misra
MATERIALS RESEARCH EXPRESS
(2019)
Article
Nanoscience & Nanotechnology
Kedar Sahoo, Deepak Khare, Saripella Srikrishna, Ashutosh Kumar Dubey, Manoj Kumar
Article
Polymer Science
Kaushal Kumar Mahato, Shivesh Sabbarwal, Nira Misra, Manoj Kumar
INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION
(2020)
Article
Optics
Sahoo Kedar, Ranjan Sudhir, Md Imteyaz Ahmad, Manoj Kumar
JOURNAL OF LUMINESCENCE
(2020)
Article
Environmental Sciences
Prarabdh Jain, Kedar Sahoo, Lenin Mahiya, Harsh Ojha, Harshita Trivedi, Avanish Singh, Manoj Kumar
Summary: A low cost polyvinyl alcohol-glutaraldehyde cross-linked hydrogel beads were successfully used for color removal from model industrial effluent containing Congo Red dye, achieving a high adsorption capacity and showing good reusability. Adsorption analysis revealed a multi-layer adsorption and pseudo second order kinetics, with fixed bed experiments best explained by the Thomas mathematical model. The studies demonstrated that external and internal mass diffusion were no longer rate limiting factors in the experiments.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Chemistry, Multidisciplinary
Sumit Chaudhary, Ramanand Rai, Kedar Sahoo, Manoj Kumar
Summary: A novel organic complex (ANNBA) was synthesized and characterized for its unique properties, such as thermal behavior and fluorescent emission. The complex displayed significant affinity towards hexavalent chromium ions in different solvents and was successfully deployed as a turn-off fluorescent sensor for the first time.
Article
Nanoscience & Nanotechnology
Prachi Srivastava, Vivek Kumar Verma, Shivesh Sabbarwal, Mamata Singh, Kedar Sahoo, Biplob Koch, Manoj Kumar
Summary: Ultra-small, water-soluble, white light-emitting (WLE) metallic nanoclusters (FMNCs), with a size of 1.6 nm and high stability, are developed using a green and easy method. These nanoclusters emit white light under 366 nm light excitation and have been successfully used for fluorescence imaging of different cell lines. Furthermore, the nanoclusters show excellent biocompatibility with human cell lines, making them promising for applications in nanomedicine.
Article
Nanoscience & Nanotechnology
Kedar Sahoo, Neelima Varshney, Tapas Das, Sanjeev Kumar Mahto, Manoj Kumar
Summary: Multifunctional copper oxide nanoparticles (CONP = 80% CuO and 20% Cu2O), synthesized using M. oleifera leaf extract, show potential for photothermal and hybrid supercapacitor applications. These CONP can convert a significant amount of near-infrared photons to thermal energy and effectively destroy melanoma cells. They also exhibit excellent energy and power density outputs when used as electrode material. Additionally, the CONP can be repeatedly utilized as an electrode material with minimal loss in capacitance value, making it suitable for long-term use.
APPLIED NANOSCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Vivek Kumar Verma, Prachi Srivastava, Shivesh Sabbarwal, Mamata Singh, Biplob Koch, Manoj Kumar
Summary: White light-emitting gadolinium oxide nanoclusters were synthesized via a one-pot technique, exhibiting tunable emission wavelength, high cell viability, and stability, making them suitable for cell imaging.
Article
Biophysics
Rinki Verma, Virendra Singh, Biplob Koch, Manoj Kumar
Summary: In this study, Methotrexate-loaded chitosan nanoparticles (Meth-Cs-NPs) were formulated through ionic-gelation method. The nanoparticles exhibited significant efficacy for chemically induced breast cancer treatment and showed biocompatibility. Additionally, the nanoparticles demonstrated improved pharmacokinetics and anti-tumor efficacy compared to free Methotrexate, indicating their potential as a viable breast cancer treatment modality.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2023)
Article
Crystallography
Shivesh Sabbarwal, Prachi Srivastava, Vivek Kumar Verma, Manoj Kumar
Summary: This research uses the most accurate iterative iso-conversional method and random nucleation dependent differential function f(α) to compute E alpha, Delta G, Delta H, Delta SandA alpha in order to estimate the nucleation rate of ultra-small CaCO3 pre-nucleation clusters. Four mathematical models are proposed to calculate nucleation rates and interfacial energy for CaCO3 prenucleation clusters. Experimental validation is carried out to confirm the presence of nucleation in CaCO3 pre-nucleation clusters at high temperatures, and thermogravimetric analysis is used to predict and understand nucleation rates for various nano systems.
CRYSTAL RESEARCH AND TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Suman Duhan, Kedar Sahoo, Sudhir Kumar Singh, Manoj Kumar
Article
Materials Science, Biomaterials
Shivesh Sabbarwal, Ashutosh Kumar Dubey, Maneesha Pandey, Manoj Kumar
JOURNAL OF MATERIALS CHEMISTRY B
(2020)
