Article
Engineering, Electrical & Electronic
Bishal Kumar Nahak, Rakesh Roshan, Saikatendu Deb Roy, Asutosh Patra, Arndhati Sahu, Sanjibani Panda, Sadanand Panda, Satya Sopan Mahato, Shrabani Mahata
Summary: This study successfully improved the photocatalytic performance of CdS quantum dots capped with citrus limon extract by introducing cerium as a selective dopant. Cerium ions reduced crystal growth and favored cubic phase formation. DLS measurements and fluorescence spectra analysis supported the experimental findings.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Najme Mehrabanpour, Alireza Nezamzadeh-Ejhieh, Shirin Ghattavi, Ali Ershadi
Summary: The photocatalytic performance of CdS-PbS immobilized on MCNP was evaluated for CT degradation. The synthesized photocatalyst was characterized using various techniques. The effects of different experimental variables and the presence of various anions on the photodegradation performance were investigated. The results confirmed the critical role of photoinduced holes and suggested a direct Z-scheme mechanism.
APPLIED SURFACE SCIENCE
(2023)
Article
Environmental Sciences
S. P. Keerthana, R. Yuvakkumar, G. Ravi, Abd El-Zaher M. A. Mustafa, Abdullah Ahmed Al-Ghamdi, Mohamed Soliman Elshikh, Dhayalan Velauthapillai
Summary: The translated text highlights the urgency of wastewater treatment, the method and experimental results of photocatalytic dye degradation, and ultimately proposes that the 2% PVP-(Mn-CdS) sample is a promising candidate for wastewater treatment.
Article
Materials Science, Multidisciplinary
Wen-Bo Chen, Lin-Yu Hu, Fang Meng, Ling Tang, Shan Liang, Jian-Bo Li
Summary: The study synthesized Au-PbS-CdS nanodumbbells with double Au caps, demonstrating their excellent photocatalytic performance. Adjusting the size of Au caps can enhance the photocatalytic efficiency. The research results offer new possibilities for efficient solar energy utilization.
Article
Chemistry, Physical
A. Dutta, B. Pihuleac, Y. Chen, C. Zong, L. Dal Negro, C. Yang
Summary: The use of CSS plasmonic nanoparticles has shown significant enhancement in the photocatalytic performance of PEC photoanodes using hematite as a testing system. The optimized CSS NPs have demonstrated double resonance peaks and spatially uniform electric field distributions, resulting in improved photocurrent density and potential for increasing carrier generation in hematite photoelectrocatalytic systems.
MATERIALS TODAY ENERGY
(2021)
Article
Environmental Sciences
Najme Mehrabanpour, Alireza Nezamzadeh-Ejhieh, Shirin Ghattavi
Summary: Increased water pollution from industrial/urban/hospital wastewater discharge has led to the development of new removal techniques/catalysts/adsorbents. Hexagonal (wurtzite) CdS and cubic PbS nanoparticles were synthesized and supported onto clinoptilolite NPs (CNP). The characterization of the sample was done using XRD, DRS, FTIR, and SEM-EDX techniques. The supported binary catalysts showed enhanced photocatalytic activity towards cefotaxime (CT). The COD results indicated a decrease in the photodegraded CT solutions, suggesting effective treatment of water pollution.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Jia Liu, Xin Wang, Leiyang Zhang, Chunchun Li, Guanjun Zhu, Zhuang Miao, Amei Zhang, Hongping Hou, Zhenhua Zhou, Li Zhou, Ququan Wang, Hongliang Du
Summary: Photocatalytic water splitting for hydrogen production has been explored in energy science, but efficiency is often lacking. This study proposes a controlled synthetic strategy to develop concave gold nanorods (Au NRs) with enhanced photocatalytic performance. The concave Au NRs, synthesized in aqueous solution, exhibit high-index facets and unique plasmon resonance modes. By selectively growing Pt nanoparticles and CdS nanocrystals onto the Au NRs, the photocatalytic H2 production rate reaches as high as 21654.56 μmol•g^-^1•h^-^1, demonstrating the great potential of faceted metal nanostructures for efficient photocatalysis.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Electrical & Electronic
Abimbola E. Oluwalana, Peter A. Ajibade
Summary: Lead sulphide (PbS) nanoparticles were synthesized by thermolysis of bis(phenylpiperazine dithiocarbamato)lead(II) complex in oleylamine at different temperatures, showing variations in particle size and bandgap energy. The PbS nanoparticles exhibited efficient photocatalytic degradation of rhodamine B and retained high recyclability properties after multiple reuses without deactivation.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Zeineb A. Thiehmed, Talal M. Altahtamouni
Summary: In this study, the effect of KBr salt on the growth of TiO2 nanorods was investigated. The addition of KBr with different concentrations controlled the growth of TiO2 nanorods, with KBr molecules suppressing lateral growth and allowing for axial growth. This impacted the morphology and internal surface area of the nanorods.
Article
Chemistry, Physical
Jingying Li, Zhi Xia, Dong Ma, Guocheng Liu, Ningning Song, Dan Xiang, Yanjun Xin, Guodong Zhang, Qinghua Chen
Summary: The immobilized Z-scheme composite photocatalyst CdS/Au/TiO2 NBs was constructed to enhance the photocatalytic activity of TiO2 NBs under solar light irradiation. The higher photocatalytic activity for antibiotic degradation was attributed to increased light absorption and efficient separation of photogenerated electrons and holes. Analysis of reaction products and radicals trapping experiments revealed the photocatalytic mechanism and active species.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Qiong Zhu, Jinhua Wang, Si Chen, Hongquan Fu, Juan Zhang, Hejun Gao, Yunwen Liao
Summary: By controlling the species of the organic sulfur source, CdS samples with different photocatalytic performances were produced. Thioacetamide was found to be the best coordination agent, as its hydrophobic chain reduced the resistance of charge transfer and increased the rate of surface charge transfer and the lifetime of photoexcited electrons. CdS prepared with thioacetamide showed excellent photocatalytic hydrogen evolution rate and rhodamine B degradation rate.
Article
Chemistry, Physical
Meiyu Zhang, Siyang Nie, Tao Cheng, Yu Feng, Chenchen Zhang, Lei Zheng, Liang Wu, Weichang Hao, Yong Ding
Summary: This study reveals for the first time the enhancement of macroscopic polarization induced by the phase junction system for the improvement of piezo-photocatalytic H2 evolution of CdS.
Article
Chemistry, Physical
Ziqiang Zheng, Ting Wang, Fang Han, Qing Yang, Benxia Li
Summary: The research developed a three-component Ni/(Au@CdS) core-shell nanostructured photocatalyst, which achieved selective transformation of benzyl alcohol with high yields of hydrogen (H-2) and benzaldehyde. Furthermore, the study revealed the synergistic effect of plasmonic effect and metal cocatalyst in enhancing photocatalysis.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Abhay Vijay Kotkondawar, Afsha Anjum Moinuddin, Sadhana Suresh Rayalu
Summary: The efficiency of light-driven charge separation is crucial for semiconductor-assisted water splitting reactions in dihydrogen production. A Pt/Au/CdS hetero-nanostructure has been synthesized and evaluated for photocatalytic hydrogen production using a sulfide shuttle as the sacrificial agent. The presence of plasmonic gold nanoparticles (Au NPs) in the hybrid nanostructure enhances light-harvesting ability and provides multiple hot electron injection channels. The highest H2 production of 15 mmol‧h^(-1)‧g^(-1) with an apparent quantum efficiency (AQE) of 4.20% (& lambda; = 420 nm) was achieved with Pt-0.72/Au-0.28/CdS using aqueous Na2SO3-Na2S solution as the sacrificial agent. Sulfide shuttles effectively scavenge the generated hole and contribute to hydrogen production.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zehong Xu, Wenhui Yue, Chunchun Li, Lingzhi Wang, Yikai Xu, Ziwei Ye, Jinlong Zhang
Summary: Incorporating plasmonic metal nanomaterials into semiconductor photocatalysts enhances their visible light response through localized surface plasmon resonance (LSPR) mechanisms. However, the presence of surfactants on the surfaces of plasmonic metal nanomaterials hinders their cocatalyst functionalities for photocatalytic hydrogen evolution. This study demonstrates a surfactant-free method to assemble Au nanoparticles (NPs) into Au colloidosomes (AuCSs), which can act as efficient cocatalysts when coupled with CdS to form Au-CdS composite photocatalysts.
Article
Chemistry, Physical
Jia Liu, Song Ma, Kai Chen, Wei Wang, Peng-Fei Wang, Li Zhou, Qu-Quan Wang
Summary: Spherical mixed-valence rhenium oxide nanoparticles with localized surface plasmon resonances were synthesized and converted into hydrogen rhenium bronze nanosheets. The dispersion of HxReO3 in aqueous solution enhanced LSPR intensity and wavelength. The HxReO3-CdS hetero-nanocrystals showed significantly higher photocatalytic hydrogen production rate compared to pure CdS, attributed to increased light absorption and electron transfer facilitated by HxReO3.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Multidisciplinary
Song Ma, Da-Jie Yang, Si-Jing Ding, Jia Liu, Wei Wang, Zhi-Yong Wu, Xiao-Dan Liu, Li Zhou, Qu-Quan Wang
Summary: The quantum behavior of surface plasmons has attracted attention due to nanotechnology advancements and diverse applications. Through an improved semiclassical model, this study investigates the effects of charge and size on plasmon shifts in metal nanoparticles, shedding light on the controversial size dependences reported in literature.
PHYSICAL REVIEW LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Hao-Sen Kang, Ming-Yang Long, Tao Zhou, Jin-Chuang Liu, Yi-Tong Duan, Liang Ma, Xiang-Bai Chen, Si-Jing Ding, Li Zhou
Summary: This study successfully prepared PbS-Au hybrids with high-index facets and strong light absorption, showing significantly improved SERS signals for Rhodamine B detection. By adjusting the size and amount of Au nanoparticles, the SERS detection limit was lowered to 10(-12) M with an analytical enhancement factor of 5.1 x 10(8). The recycling and self-cleaning properties under visible light irradiation were demonstrated, attributed to the broad plasmon absorption and fast charge transfer between Au and PbS, offering a potential way for efficient SERS substrates development.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Physical
Li Cheng, Yu-Ting Zhong, Qu-Quan Wang, Li Zhou
Summary: We report an approach to prepare Cu/Cu2-xS core/shell nanorods by in situ sulfidation of copper nanorods. The thickness of Cu2-xS layer can be adjusted by controlling the amount of S source. The Cu/Cu2-xS core/shell nanorods demonstrate enhanced photocatalytic performance compared to Cu nanorods.
Article
Nanoscience & Nanotechnology
Xujie Wang, Zhenlong Dou, Chi Zhang, FangFang Deng, XiaoLin Lu, ShuangShuang Wang, Li Zhou, Tao Ding
Summary: Anisotropy is important in various material systems, but creating and controlling it has been a challenge. Polarization-addressed anisotropy is attractive due to its controllability, simplicity, and accuracy, but only a few material systems can achieve it. In this study, a polarization-dependent anisotropic etching system made of Au@oligomer core-shell nanoparticles was established. The etching process is faster along the polarization direction, resulting in shape anisotropy of the particles. This system has advantages of high selectivity, controllability, and versatility, opening up new possibilities for on-chip nanofabrication.
Article
Chemistry, Physical
Linyu Hu, Yuqi Li, Wenbo Chen, Xiaogang Liu, Shan Liang, Ziqiang Cheng, Jianbo Li, Li Zhou
Summary: In this paper, Cu2-xSe-modified Au/Bi2Se3 hybrid nanoparticles with porous shells were prepared, and a Bi2Se3/Cu2-xSe Z-scheme heterojunction was formed. The hybrids exhibited broad and strong plasmon resonance absorption in the visible band due to the effective coupling between the Au core and semiconductor shells. The carrier lifetime of the hybrids could be tailored by adjusting the Cu2-xSe content. The 0.1-Au/Bi2Se3/Cu2-xSe electrode with the longest electron lifetime showed enhanced photoelectrochemical performance. Compared to pure Bi2Se3 and Au/Bi2Se3 nanoparticles, the porous Au/Bi2Se3/Cu2-xSe hybrid photoanodes demonstrated significantly increased photoconversion efficiency under simulated sunlight illumination, thanks to the cooperation of the Z-scheme heterojunction and plasmon resonance enhancement effects.
Article
Chemistry, Physical
Zhi-Di Li, Hao-Sen Kang, Ming-Yang Long, Jing-Chuan Liu, Tao Zhou, Dan Zhu, Liang Ma, Si-Jing Ding, Li Zhou
Summary: In this study, structure-adjustable Au nanodumbbells were prepared and used for plasmon-enhanced surface-enhanced Raman scattering (SERS) and second-harmonic generation (SHG). The results showed that the Au nanodumbbells exhibited better performance in enhancing Raman signals compared to Au nanorods, and double-resonantly enhanced SHG was achieved by precisely adjusting the end size of the nanodumbbells.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Nanoscience & Nanotechnology
Wen-Qin Zhao, Qing Zhao, Zheng-Ke Song, Liang Ma, Xiang-Bai Chen, Si-Jing Ding, Li Zhou
Summary: The study combines narrow-bandgap PbS, wide-bandgap WO3-x, and Au nanoparticles to form a plasmon-mediated Z-scheme nanostructure, which shows excellent light absorption and charge separation abilities, enhancing photocatalytic hydrogen generation activity, especially with good apparent quantum efficiency under near-infrared light irradiation.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Zhi-Yong Wu, Zhen-Long Dou, Li-Jiong Chen, Li Zhou, Qu-Quan Wang
Summary: Nonlinear optical signals of metallic nanoparticle films reach a maximum at the percolation threshold. By depositing Ag nanoparticles on the percolating Au nanoparticle film, we constructed conductive Ag/Au bilayer films and compared their second harmonic generation (SHG) with that of single-component (Au or Ag) nanoparticle films. We observed a 680% SHG enhancement in the Ag/Au bilayer film compared to the percolating Au nanoparticle film, attributed to the cooperative effect of surface plasmon resonances, interband transitions, and the percolation effect. These findings provide a strategy for designing nonlinear photonic nanodevices with optimized performance.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Yang Yang, Xiang Long, Feng-Yuan Zhang, Hang-Yu Yan, Guo-Wei Li, Meng-Dai Luoshan, Chu-Yun Huang, Li Zhou
Summary: This study demonstrates the controllable growth of Pt-Au nanoplates and Au@Pt nanorings with superior photothermal conversion efficiency. Hexagonal Au nanoplates are used as templates, obtained through a transformation reaction from Au nanotriangles. Pt-Au nanoplates are prepared by a site-selective growth of Pt on the rim of obtained hexagonal Au nanoplates. Subsequently, Pt nanorings are obtained by a selective etching of Au, and a regrowth of Au on the Pt nanorings leads to bimetallic Au@Pt nanorings. The improvement in photothermal effect can be attributed to the strong surface plasmon resonances and coupling between Au and Pt.
Article
Chemistry, Multidisciplinary
Hao-Sen Kang, Jing-Wen Zou, Yang Liu, Liang Ma, Jing-Ru Feng, Zi-Yang Yu, Xiang-Bai Chen, Si-Jing Ding, Li Zhou, Qu-Quan Wang
Summary: A three-plasmon hybrid material consisting of core-shell Au@Cu2-xS hybrids bonded with ultrathin Ti3C2Tx MXene is prepared for efficient photothermal conversion and solar water evaporation. The hybrid material exhibits excellent photothermal conversion efficiency, light absorption, and charge transfer capabilities. The combination with MXene as a membrane material results in high evaporation rate and light-to-heat conversion efficiency. Furthermore, a solar evaporation device is designed based on liquid pressure and connectors, demonstrating potential applications in water purification and drinkable water generation.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Jia Liu, Xin Wang, Leiyang Zhang, Chunchun Li, Guanjun Zhu, Zhuang Miao, Amei Zhang, Hongping Hou, Zhenhua Zhou, Li Zhou, Ququan Wang, Hongliang Du
Summary: Photocatalytic water splitting for hydrogen production has been explored in energy science, but efficiency is often lacking. This study proposes a controlled synthetic strategy to develop concave gold nanorods (Au NRs) with enhanced photocatalytic performance. The concave Au NRs, synthesized in aqueous solution, exhibit high-index facets and unique plasmon resonance modes. By selectively growing Pt nanoparticles and CdS nanocrystals onto the Au NRs, the photocatalytic H2 production rate reaches as high as 21654.56 μmol•g^-^1•h^-^1, demonstrating the great potential of faceted metal nanostructures for efficient photocatalysis.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Xiang Long, Yang Yang, Zhen-Long Dou, Qu-Quan Wang, Li Zhou
Summary: We report an effective method to synthesize dumbbell-like Au-PtCu solid and hollow nanorods, regulated by the unique surface capping and oxidation etching roles of copper ions. Dumbbell-like nanorods are prepared through site-selective co-deposition of platinum and copper on both tips of gold nanorods assisted by the capping effect of the CTAB-Cu+ complex to passivate the side surface. Hollow dumbbell-like Au-PtCu nanorods are formed through triggering the etching effect of copper ions by increasing the reaction temperature to 80°C. The manipulation of the morphology and extinction properties of the trimetallic Au-PtCu nanorods is demonstrated by adjusting the concentration of copper ions. Under excitation with a near-infrared 808 nm laser, the dumbbell-like Au-PtCu nanorods show excellent photothermal conversion, with a 3.1 times temperature increment (ΔT) compared to bare Au nanorods, while the hollow dumbbell-like Au-PtCu NRs demonstrate improved photocatalytic activity under xenon lamp irradiation. The capping and etching properties of copper ions were demonstrated to synthesize different Au-PtCu nanorods with improved photothermal and photocatalytic activities.
Article
Chemistry, Multidisciplinary
Jing-Ru Feng, Zhi-Rui Zhao, Zhong-Long Xiong, Hao-Sen Kang, Si-Jing Ding, Liang Ma, Li Zhou
Summary: By changing the shape and composition, the plasmon-enhanced optical properties of nanomaterials can be controlled. In this study, Au/PbS/Au nanostars with multiple tips were synthesized using a gentle approach, and their SERS activity, SHG, and photocatalytic performance were explored. The Au/PbS/Au nanostars exhibited broad spectral responses and enhanced local electric fields, leading to improved SERS activity and photocatalytic efficiency.
Article
Chemistry, Multidisciplinary
Tao Zhou, Si-Jing Ding, Zhi-Yong Wu, Da-Jie Yang, Li-Na Zhou, Zhi-Rui Zhao, Liang Ma, Wei Wang, Song Ma, Si-Man Wang, Jia-Nan Zou, Li Zhou, Qu-Quan Wang
Summary: The collaboration of magnetic and electric plasmon resonance modes in cup-shaped metallic nanostructures leads to significantly broadened and highly tunable optical responses. Different morphologies of Au nanoshells exhibit two maximal SHG intensities, depending on the number and size of openings. Ag/Au and AuAg/Ag/Au open nanoshells show enhanced SHG intensities by adjusting the thickness of the metal shells.
