Article
Chemistry, Physical
Junhao Cai, Jianrui Cao, Heng Tao, Ruoping Li, Mingju Huang
Summary: A novel 3D core-shell nanostructure decorated with plasmonic Au nanoparticles was prepared for efficient photoelectrochemical water splitting, achieving a photoconversion efficiency and photocurrent density 4.80 and 4.33 times higher than ZnO nanosheets, respectively.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Hao Huy Nguyen, Adriana Martinez-Oviedo, Tae-Ho Kim, Bhupendra Joshi, Lung Nhat Dang Quang, Gobinda Gyawali
Summary: The study found a significant correlation between NaOH concentration and the types of TiO2 nanostructured products obtained through microwave hydrothermal process. Lower NaOH concentrations resulted in a mixture of 1D and 2D nanostructures, while higher concentrations produced nanosheets and nanotube-like structures with larger specific surface areas. Additionally, TiO2 samples prepared at higher NaOH concentrations showed improved photocatalytic performance for NOx gas removal.
Article
Environmental Sciences
Nisha Rani, Brijnandan S. Dehiya
Summary: The study presents a smart magnetic nanocomposite doped with copper to reduce the energy bandgap of the photocatalyst, allowing for easy recovery after wastewater treatment and demonstrating high efficiency in degrading dyes.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Aaron Bayles, Shu Tian, Jingyi Zhou, Lin Yuan, Yigao Yuan, Christian R. Jacobson, Corbin Farr, Ming Zhang, Dayne F. Swearer, David Solti, Minghe Lou, Henry O. Everitt, Peter Nordlander, Naomi J. Halas
Summary: This study introduces Al@TiO2 core-shell nanoparticles as active photocatalysts for hot electron-mediated H-2 dissociation reaction and hot hole-mediated methanol dehydration. The research indicates that the photocatalytic mechanism involves plasmonic hot carrier generation and subsequent transfer into the TiO2 layer. The Al@TiO2 antenna-reactor offers an earth-abundant solution for the future design of visible-light-driven plasmonic photocatalysts.
Article
Engineering, Chemical
Xiaohong Yang, Jinnan Liang, Haitao Fu, Xiaoli Ran, Xizhong An
Summary: In this study, Au loaded Ag@TiO2 ternary core-shell structures were synthesized, with Ag nanoparticles as cores in the inner layer and Au nanoparticles in the outer layer, leading to improved sunlight absorption and enhanced photocatalytic activity.
Article
Nanoscience & Nanotechnology
Kunihiko Kato, Yunzi Xin, Takashi Shirai, Sebastien Vaucher
Summary: A novel design has been proposed for a facile and rapid build-up of highly tailorable nanostructured multishells on metal oxide particles to maximize the visible-light photocatalytic performance. The composite materials showed better photocatalytic activity in comparison to the traditional synthesis pathway for degradation of organic pollutants under visible light, attributed to the synergetic effects of homo-/hetero-junction on TiO2.
SCRIPTA MATERIALIA
(2022)
Article
Engineering, Environmental
Jiayi Yin, Martina Roso, Carlo Boaretti, Alessandra Lorenzetti, Alessandro Martucci, Michele Modesti
Summary: A PVDF-TiO2 core-shell composite nanofibrous membrane with photocatalytic activity was successfully obtained through microwave-assisted hydrothermal treatment of an electrospun PVDF membrane. The effects of precursor solution acidity, heating temperature, and treatment time on the structure and photocatalytic performance were investigated, showing that an increase in temperature and treatment time resulted in an accumulation of TiO2 on the surface of PVDF NFs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Dung Van Dao, Thuy T. D. Nguyen, Periyayya Uthirakumar, Yeong-Hoon Cho, Gyu-Cheol Kim, Jin-Kyu Yang, Duy-Thanh Tran, Thanh Duc Le, Hyuk Choi, Hyun You Kim, Yeon-Tae Yu, In-Hwan Lee
Summary: This study investigates the application of plasmonic metal@semiconductor core-shell nanoparticles (CSNPs) in artificial photosynthesis, using Au@CeO2 CSNPs as an example. The results show that Au@CeO2 CSNPs exhibit superior photocatalytic hydrogen evolution reaction (HER) performance compared to pure CeO2, with the Au@CeO2-18 model producing an HER rate approximately 10 times higher than pure CeO2. Additionally, the Au@CeO2-18 photocatalyst demonstrates excellent long-term stability and the improvements are attributed to electronic interactions between Au and CeO2, as well as localized surface plasmon resonance excitation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Bin Zhu, Lu-Yao Zhang, Jing-Lin Liu, Xiao-Min Zhang, Xiao-Song Li, Ai-Min Zhu
Summary: In this study, an Au-Ag plasmonic nanocatalyst achieved by plasma restructuring and activation was reported to exhibit high activity in the VL photocatalytic oxidation of CO. The contribution of O-2 plasma treatment and the enhancement mechanism for the Au-Ag plasmonic nanocatalyst were also disclosed.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Selva Bilge, Ali Sinag
Summary: This study investigates the synthesis of carbon materials from waste masks using the hydrothermal carbonization method and their application in enhancing the photocatalytic activity of TiO2. The results show that the new photocatalyst exhibits excellent photocatalytic performance in degradation experiments.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Diptiranjan Paital, Tarun Bansal, Saumyakanti Khatua
Summary: The development of efficient and stable photocatalytic systems is crucial for the advancement of renewable energy technologies. We report on the synthesis of Au@MnOx core-shell nanoparticles that exhibit efficient electrochemical water oxidation reaction at a low onset overpotential requirement. Under visible light excitation, the Au@MnOx catalyst shows improved activity, lower overpotential requirement, and generates a photocurrent of 128 mu A/cm(2) at 1 V applied potential. The nanoparticles also demonstrate good stability under prolonged photoexcitation up to 2000 s.
ACS APPLIED NANO MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Yue Tian, Qingqiang Cui, Linlin Xu, Anxin Jiao, Shuang Li, Xuelin Wang, Ming Chen
Summary: In recent years, the direct plasmonic photocatalysis of coinage metal nanomaterials via energetic localized surface plasmon resonance in visible-light region has been explored. By constructing icosahedral Au@C-60 core-shell nanomaterials, the photocatalytic activity is significantly enhanced due to the specific delocalized electron structure of C-60 shell and enhanced LSPR property of Au core. The photocatalytic activity of Au@C-60 nanomaterials can be effectively optimized by changing the pH value of the reaction solution, showing potential for practical applications.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Optics
Lijie Wang, Tsz Him Chow, Malte Oppermann, Jianfang Wang, Majed Chergui
Summary: We report on the deep-to-near-UV transient absorption spectra of Au/SiO2 and Au/TiO2 core-shell nanoparticles (NPs) and UV-excited bare anatase TiO2 NPs. The presence of electrons/holes in the conduction/valence band of the material is indicated by the bleaching of the first excitonic transition of anatase TiO2 at -3.8 eV. Two-photon excitation does not occur in bare TiO2 NPs, but takes place in the TiO2 shell of Au/TiO2 core-shell NPs due to plasmon resonance enhancement. The bleach of the 3.8 eV band of TiO2 lives significantly longer in the core-shell NPs, indicating longer storage of excess electrons/holes.
PHOTONICS RESEARCH
(2023)
Article
Environmental Sciences
Sheida Mokhtari, Hossein Faghihian, Mehrosadat Mirmohammadi
Summary: In this study, a selective photocatalyst based on molecularly imprinted magnetized TiO2 (MMIP@TiO2) was prepared and used for the degradation of a sulfasalazine pharmaceutical pollutant. The MMIP@TiO2 photocatalyst showed significantly higher efficiency and selectivity compared to the non-imprinted counterpart, achieving 90% degradation efficiency within 10 minutes. The maximum removal efficiency was calculated to be 92%.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Jijie Huang, Xin Li Phuah, Luke Mitchell McClintock, Prashant Padmanabhan, K. S. N. Vikrant, Han Wang, Di Zhang, Haohan Wang, Ping Lu, Xingyao Gao, Xing Sun, Xiaoshan Xu, R. Edwin Garcia, Hou-Tong Chen, Xinghang Zhang, Haiyan Wang
Summary: The study designs a structure that embeds alloy nanopillars into a BTO matrix, forming vertically aligned nanocomposites with excellent epitaxial quality and interesting properties like high magnetic anisotropy and magneto-optical coupling response.
Article
Materials Science, Multidisciplinary
Samriti Thakur, Devanshi Tinna, Bonamali Pal
Summary: MnO2 with different morphologies was used for photooxidation of methylene blue dye and reduction of nitrobenzene, showing versatile photoactivity due to its surface and crystal structural morphologies. Characterization of prepared materials was done using various techniques, revealing that changes in shape, size, and surface ligand exposure affect the absorption peaks. Some morphologies of MnO2 exhibited superior photocatalytic performance.
BULLETIN OF MATERIALS SCIENCE
(2021)
Article
Engineering, Chemical
Pooja Kumari, Raj Kumar Das, Bonamali Pal
Summary: This study explores the use of anion impregnated composites as photocatalysts for the degradation of diclofenac sodium, showing improved efficiency and larger specific surface area. The anions act as efficient electron scavengers, suppressing electron-hole pair recombination and enhancing photocatalytic activity. Overall, the anion loaded derivatives demonstrate potential as a cost-effective and efficient solution for eliminating diclofenac sodium from wastewater.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Chemistry, Multidisciplinary
Harpreet Kaur, Satnam Singh, Bonamali Pal
Summary: Layered double hydroxides loaded with g-C3N4 composites showed higher adsorption capacity for both anionic and cationic model pollutants compared to bare LDH. The adsorption capacity varied for different pollutants with the increase in the weight percentage of g-C3N4, indicating a selective adsorption effect depending on the type of pollutant.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Sakshi Bhardwaj, Bonamali Pal
Summary: This study focuses on the impact of different oxidation states of impregnated Crn+ ionic species on the TiO2 surface. The resulting Crn+-TiO2 nanocomposites showed enhanced optical response, charge carrier relaxation dynamics, adsorption, and photocatalytic behavior in correlation with variable oxidation states. The observed photoactivity of these nanocatalysts in the photooxidation of aspirin and paracetamol drugs was attributed to the different chemical nature of substrate molecules, the effects of catalyst oxidation state, and catalyst-substrate associations.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Review
Engineering, Chemical
Manjusha Passi, Bonamali Pal
Summary: This review summarizes various synthesis methods, structural properties, modification strategies, and applications of calcium titanate nanomaterials in environmental and energy fields, aiming to provide useful information for specialists dealing with calcium titanate.
Article
Materials Science, Multidisciplinary
Aadil Bathla, Sherif A. Younis, Bonamali Pal, Ki-Hyun Kim
Summary: This review discusses the basic principle of BDS-based photocatalysis and focuses on the impact of bimetallic nanostructure doped MOFs (BDM). The photocatalytic performance of BDM for various target species is evaluated, different synthesis approaches are discussed, and new challenges and future research prospects are highlighted to advance BDM-based photocatalytic systems.
APPLIED MATERIALS TODAY
(2021)
Article
Engineering, Environmental
Manpreet Kaur Aulakh, Bonamali Pal
Summary: Solar irradiated plasmonic Ag-TiO2 (P25) nanocomposites showed higher efficiency in reducing nitroaromatics compared to bare TiO2, with the focus on the impact of photodeposition time on the photocatalytic activity and characteristics of deposited Ag nanoparticles on the titania surface.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Manpreet Kaur Aulakh, Jyotsna Dua, Bonamali Pal
Summary: In this study, photo-responsive ZnS nanostructures were synthesized using MPA and PVP as capping agents, showing enhanced photocatalytic activity towards crystal violet degradation under UV light. Structural analysis and FT-IR studies were used to determine the effects of capping agents and the formation of nanostructures. The unique optical properties, effective charge separation, and higher surface area of ZnSM1 contributed to its outstanding activity in degrading organic pollutants beyond the UV region.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Energy & Fuels
Akansha Mehta, Rayees Ahmad Rather, Blaz Belec, Sandra Gardonio, Ming Fang, Matjaz Valant
Summary: This study successfully developed a cheaper and environmentally friendly nexus between plastic waste management, wastewater treatment, and renewable hydrogen production. By synthesizing fluorescent carbon (FCs) and creating a composite material with TiO2 and CuO, the efficiency of photocatalytic and electrocatalytic hydrogen production was significantly improved.
Article
Chemistry, Multidisciplinary
Manpreet K. Aulakh, Harpreet Kaur, Mehak Bansal, Bonamali Pal, Satnam Singh
Summary: This study describes a method of extracting and characterizing hardness causing materials (HCM) from boiling tap water through distillation. The analysis reveals that the residue obtained after calcination mainly consists of calcium carbonate at room temperature and decomposes to CaO at 900 degrees C. The adsorption experiments demonstrate that Mn7+ has the highest efficiency on the negatively charged surface of HCM-900 degrees C.
Article
Chemistry, Multidisciplinary
Jemini, Satnam Singh, Bonamali Pal
Summary: This study prepared and characterized monoclinic tungsten trioxide-loaded ZnCr layered double hydroxide composites, which exhibited high photocatalytic performance and potential application in the treatment of wastewater contaminated with antibiotics like Tetracycline.
Article
Chemistry, Multidisciplinary
Shreya Sharma, Niranjan Das, Bonamali Pal
Summary: This study prepared novel soy protein isolate (SPI)-based bionanocomposite films by incorporating different loadings (0%, 2%, 5%, and 9% w/w) of Mg-Al Layered double hydroxide (LDH) using a simple solution casting process. The intercalation/exfoliation of Mg-Al LDH sheets in the SPI matrix of bionanocomposite films was confirmed through FTIR, XRD, scanning electron microscopy, and TGA analysis. The bionanocomposite films demonstrated good thermal stability, and their mechanical and biodegradation properties were also investigated. The SPI-Mg/Al LDH 5% film exhibited a significant increase in tensile strength and efficient degradation in non-sterile soil.
Article
Environmental Sciences
Davinder Kaur, Karanveer Singh, William T. T. Reynolds Jr, Bonamali Pal
Summary: Graphene oxide (GO) is a promising material in photocatalysis, adsorption, and energy storage due to its high surface area and unique layered structure. Anthracite coal is an attractive precursor for GO because it provides high concentration of sp(2) carbon, resulting in high conductivity and absorbance in the visible region. GO-TiO2 nanocomposites were prepared to enhance photocatalytic activity by facilitating electron transmission from TiO2 to GO, and Ag nanoparticles were coated on TiO2 to further boost activity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Mehak Bansal, Bonamali Pal
Summary: Starch modified NiFe-layered double hydroxide composites were synthesized and used as catalysts for the adsorption and degradation of textile dyes and non-steroidal drugs in wastewater. The composites showed remarkable ability in removing reactive dyes and exhibited high absorption capacity and photocatalytic degradation efficiency. This study highlights the potential of nanocomposites for wastewater treatment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Manpreet Kaur Aulakh, Bonamali Pal, Alisha Vaishnav, N. Tejo Prakash
Summary: The study highlights the importance of biosynthesized selenium nanoparticles as a co-catalyst for enhancing the photoactivity of Se@ZnO nanocomposites under solar irradiations. The synthesized Se@ZnO nanocomposites showed significantly higher degradation efficiency of pollutants compared to bare ZnO, indicating their potential application in environmental remediation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
