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Dual‐Function Piezo‐Photocatalytic Systems for Sustainable Hydrogen Evolution and Environmental Remediation
(Wiley, 2025-10-27)
Nguyễn Hoàng Ly
;
Sang Jun Son
;
HESAM, KAMYAB
;
Yasser Vasseghian
;
Sang‐Woo Joo
Hydrogen (H) production and environmental cleanup, including pollutant breakdown, nano‐plastic removal, and CO reduction, are crucial for achieving environmental sustainability. Piezo‐photocatalysis has appeared in an optimistic approach to address environmental pollution and the escalating energy crisis. Although several reviews on H production and environmental cleanup using piezo‐catalytic technologies have been recently published, there is no review specifically focused on the literature related to dual‐functional piezo‐photocatalytic systems. This research aims to fill that gap as the field continues to grow rapidly. This study reviews dual‐function piezo‐photocatalytic systems, which can be easily fabricated to enhance the effective uncoupling and transfer of photoproduced holes and electrons for H production and environmental cleanup. First, piezoelectric materials, such as metal oxides (e.g., TiO, ZnO, BaTiO), 2D materials (e.g., MoS, MXenes, graphene‐based materials), perovskite materials, and composite/heterostructure materials, are introduced. Second, this work also explores various modification methods that enhance piezo‐photocatalytic efficiency, highlighting the remarkable properties of dual‐function systems designed for sustainable H production and environmental cleanup. Additionally, this work provides insight into the underlying mechanisms of piezo‐photocatalytic activity and suggests new pathways toward high‐performance piezo‐photocatalysts. Finally, this research discusses future directions for piezoelectric materials in environmental applications and sustainable H production.
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Multifunctional silver nanoparticles-based composites for SERS detection and photocatalytic degradation of micro- and/or nano-plastics
(Elsevier BV, 2026-04)
Nguyễn Hoàng Ly
;
HESAM, KAMYAB
;
Yasser Vasseghian
;
Sang-Woo Joo
Micro- and/or nano-plastics (MNPs) pose an emerging environmental issue due to their widespread presence in aquatic habitats, persistence in the environment, and potential toxic effects on ecosystems and public health. Silver nanoparticles (AgNPs) are well-known not only as plasmonic materials but also as mediators of photocatalysis, which is one of the most promising tools for identifying and degrading MNPs. This review covers recent advances in surface-enhanced Raman scattering (SERS) detection and the photocatalytic degradation of common plastics (e.g., polystyrene, polypropylene, polyvinyl chloride, etc.) using multifunctional AgNPs-based composites. These SERS substrates can detect MNPs in contaminated environmental water with consistent signals and high sensitivity. Notably, upon irradiation, these composites produce reactive oxygen species, triggering chain reactions that break down polymer chains into new compounds. Although AgNPs-based composites are stable, their photocatalytic efficiency is often limited by poor solar spectrum utilization, mass transfer resistance, and electron-hole recombination, leading to lower degradation rates and variable results. Some research highlights the ongoing need to improve photocatalyst design, reactor setups, and assessment methods for degradation. Additionally, the possible formation of toxic intermediates raises safety concerns, underscoring the need for further studies on ecotoxicological effects. When combined with other treatment methods, AgNPs-based SERS detection and photocatalysis provide a promising approach for addressing MNPs and other emerging pollutants in water treatment.
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Design of FeCoNiSmNd-co-doped porous carbon catalysts from pulverized coal for radical and non-radical peroxymonosulfate activation in organic pollutant degradation
(Elsevier BV, 2025-11)
Zhen Wu
;
Lisheng Wang
;
Xiaohan Wang
;
Bin Zhao
;
Heliang Fan
Pulverized coal has a good specific surface area, surface activity, and adsorption properties, which can be utilized to construct new carbon materials. In this work, multi-rare-earth elements co-doped coal-based composite catalysts are synthesized using a pyrolysis carbonization route with pulverized coal as the carbon source. The performance for the catalytic activation of persulfate is investigated with TC as the representative contaminant. The results demonstrate that the porous carbon-based catalyst with uniform doping of transition metals and rare earth metals is prepared with a surface area equal to 654 m2/g. This coal-based catalyst has good degradation efficiencies for TC (95.7 %), RhB (100.0 %), MO (90.0 %), and MB (100.0 %) in 30 min, respectively. The MB and RhB could be entirely degraded within 20 and 10 min, respectively. The activation energy of the reaction system is 16.21 kJ/mol. According to the free radical quenching reaction, the degradation of active compounds of tetracycline (TC) is calculated, which showed that O2•−(39.1 %), SO4•− (27.1 %), 1O2 (22.4 %) and •OH (15.6 %) all played important roles during the degradation of TC. The catalyst retains 94.5 % of its degradation efficiency after four cycles of use. The degradation efficiency and reaction rate constants of the system to degrade TC in lake water, tap water and seawater all increased due to the effect of Cl-, from 89.2 % and 0.2126 min−1 to 97.0 % and 0.3466 min−1, respectively, which showed the catalysts used have a good adaptability with different water.
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Photocatalytic CO2 conversions on copper nanoparticles investigated by Raman spectral changes using convolutional neural networks
(Elsevier BV, 2025-10)
Heung Seok Lee
;
Jaerin Choi
;
Jin Yong Lee
;
Ji Eun An
;
Thi Huong Vu
A convolutional neural network (CNN) deep learning process is employed to analyze in situ Raman scattering data for CO2 capture and its photocatalytic conversions onto copper sulfide hollow nanospheres (CuSHNSs) and copper nanocubes (CuNCs) in microalgae solution of Spirulina maxima. Raman spectra under visible light at 633 nm in a microfluidic solution provided representative vibrational marker bands of Cdouble bondO features at ∼2100 cm−1 and CH2/CH3 bending vibrations at ∼1400 cm−1 that are correlated with CO2 reduction products of carbon monoxide (C1) and multi‑carbon species such as propanol (C3), butanol (C4), respectively. Accumulated Raman spectra were trained and analyzed to estimate photocatalytic pathways using CNN algorithm. The presence of Spirulina maxima microalgae on the alteration of photocatalytic processes is studied by analyzing collective Raman spectral changes. The main observation is that strong CO peaks in Raman spectra of CO2 adsorbed by CuNCs almost disappeared after treatment with microalgae, whereas their intensities were slightly increased in case of CuSHNS. The CNN deep learning process for Raman spectra was effective to differentiate photocatalytic mechanisms of CO2 conversion onto nanoparticle surfaces.
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Tailoring high-entropy alloys for cutting-edge hydrogen evolution electrocatalysis
(Elsevier BV, 2025-12)
Akbar Hojjati-Najafabadi
;
Reza Behmadi
;
Yezeng He
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HESAM, KAMYAB
;
Yasser Vasseghian
This paper provides a general overview of high-entropy alloys (HEAs) as future electrocatalysts for the hydrogen evolution reaction (HER). Growing energy demands worldwide and the need to mitigate climate change have placed attention on the efficient, sustainable production of hydrogen through electrochemical water splitting. Traditional noble-metal electrocatalysts such as platinum (Pt) possess excellent HER activity but are burdened by exorbitantly inhibitive cost, scarcity, and poisoning sensitivity. High-entropy alloys that consist of five or more major components in nearly equimolar proportions offer a paradigmatic solution due to their unique structural and electronic properties. High configurational entropy, lattice distortion, sluggish diffusion, and synergistic "cocktail" effects, in combination, enhance the catalytic activity of these alloys. Improved synthesis techniques of HEAs in nanoparticle, nanowire, and porous network forms have been discovered to exhibit high HER activity with low overpotentials and long-term durability. This review critically explores the fundamental principles of HER, the design principles of HEA electrocatalysts, and their applications in catalysis, with special focus on directions for future research to realize their full potential.
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Hybrid Photocatalytic Porphyrin-Functionalized UiO-66/BiVO4 for Enhanced CO2 Reduction Using Photosystem II
(Wiley, 2025-09-04)
Van Duc Bui
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Thi Huong Vu
;
Thi Phuong Anh Tran
;
Le Minh Khoa Nguyen
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HESAM, KAMYAB
Harnessing abundant solar energy for sustainable fuel production offers one of the most encouraging strategies to mitigate CO2 emissions. The discovery of novel and efficient photocatalysts to enhance photocatalytic CO2 reduction is important for converting solar energy to fuel. Porphyrin‐functionalized UiO‐66 on a BiVO4 semiconductor is introduced to convert CO2 via photoreactions. Here, the solar‐driven production of carbonaceous feedstocks is reported using a novel photocatalytic material S‐scheme UiO‐66‐TCPP‐BiVO4 heterojunction coupled with the photosystem II (PSII) in a microalgae. Coupling PSII with synthetic catalysts improves the efficiency of light‐harvesting and the CO2 reduction reaction (CO2RR). Electrochemical impedance spectroscopy, transient photocurrent response, photoluminescence lifetime, X‐ray photoelectron spectrometer, transmission electron microscope (TEM), X‐ray diffraction (XRD), and electron spin resonance measurements are conducted to determine the complex structural and electronic properties and the photocatalytic performance. In situ Fourier‐transform infrared spectra provide the CO2RR processes, revealing the mechanism by detailing intermediate formation and energy pathways.
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Nanobioremediation of heavy metals using microorganisms
(Elsevier BV, 2025-09)
HESAM, KAMYAB
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Shreeshivadasan Chelliapan
;
Elham Khalili
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ZULETA MEDIAVILLA, DIANA PATRICIA
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KHORAMI, MAJID
Heavy metals (HMs) in soil are a big threat to environmental and agricultural sustainability. This review discusses the development of the nanobioremediation paradigm (an approach combining nanotechnology and microbiological processes) for the treatment of HM toxicity. Recent advances in nanoparticle (NP)-based approaches to their ability to improve microbial detoxification methods, such as adsorption, redox transformation, and enzyme activation forms of microbial detoxification are discussed. Key findings suggest that many engineered NPs (e.g., zero-valent iron, biogenic metal oxides) can enhance HM immobilization efficiencies and contour microbial performances and functions of the soil microbiome. Still, there are areas of uncertainty regarding NP-microbe-soil interactions, long-term ecotoxicological effects, and applicability at the field level that are critical to be discussed. Future research directions are advised to focus on the eco-designed NPs, optimizing microbial consortia specific to the soil, and interdisciplinary frameworks linking the laboratory methods and materials to the real-world applications.
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High-performance supercapacitors based on NiMn layered double hydroxides/Ni3S2 nanocomposite
(Elsevier BV, 2025-04-01)
Yezeng He
;
Xinfeng Liu
;
Ke He
;
Hesam Kamyab
;
Lalitha Gnanasekaran
Layered double hydroxide (LDH), an emerging electroactive material, receives significant attention in storage and energy conversion area due to its excellent ion insertion and exchange capacity. Transition metal sulfides with multiple oxidation states and redox reactions maintain high-power density. In this research, NiMn-LDH on transition metal sulfides M − S (M = Ni, Co, Mn, Fe) are synthesized. Of these, NiMn-LDH/Ni3S2 demonstrates excellent electrochemical efficiency. In the three-electrode system, NiMn-LDH/Ni3S2 electrode achieves high specific capacitance of 2028.38 mF cm⁻2 at 1 mA cm⁻2 and excellent cycling stability of 69.53 % retention after 5000 cycles at 10 mA cm⁻2. The device consisting of activated carbon and NiMn-LDH/Ni3S2 exhibits a remarkable energy density of 63.06 Wh kg⁻1 at a power density of 1599.94 W kg⁻1. The NiMn-LDH/Ni3S2 electrode demonstrates an effective pseudo-capacitance performance and holds a great promise for electrodes in capacitive energy storage devices. © 2025 Elsevier B.V.
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Bioprospecting of biosurfactant-producing bacteria for hydrocarbon bioremediation: Optimization and characterization
(Springer Science and Business Media LLC, 2023-06-19)
Anfal Bellebcir
;
Fateh Merouane
;
Karim Chekroud
;
Hadjira Bounabi
;
Yasser Vasseghian
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Spotlighting the boosted energy storage capacity of CoFe2O4/Graphene nanoribbons: A promising positive electrode material for high-energy-density asymmetric supercapacitor
(Elsevier BV, 2023-05)
Changlei Xia
;
Tiyao Ren
;
Rozhin Darabi
;
Mehdi Shabani-Nooshabadi
;
Jiří Jaromír Klemeš

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