Review
Chemistry, Multidisciplinary
Jayaseelan Arun, S. Nachiappan, Goutham Rangarajan, Ram Prasath Alagappan, K. P. Gopinath, Eric Lichtfouse
Summary: This review focuses on the mechanisms, synthesis, and applications of titanium dioxide photocatalysis. Titanium dioxide exhibits high photocatalytic activity and can be used in self-cleaning surfaces, air and water purification systems, microbial inactivation, and selective organic conversion. The synthesis of titanium dioxide nanomaterials is a major challenge, and various methods such as sol-gel, sonochemical, and hydrothermal techniques are used. The applications of titanium dioxide photocatalysis are diverse and include energy production, petroleum recovery, and removal of various pollutants.
ENVIRONMENTAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Alejandro Suarez-Mendez, Myrna H. Matus, Victor M. Rivera
Summary: The photocatalytic evaluation of a novel material based on protonated thiophene-based oligomers as sensitizers of TiO2 nanoparticles supported on protonic zeolite-Y was investigated. Experimental results showed that the degradation rate depended on the amount of TiO2 supported on zeolite and the TiO2-OTn+/HY material was photochemically stable. Theoretical calculations indicated that oligothiophenes with protonation in the Ca atom exhibited the best performance as sensitizers in the TiO2OTn+/HY material.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Engineering, Chemical
Xingjun Lu, Zhipeng Yue, Bangzhu Peng
Summary: In this study, TiO2 nanotubes were prepared as photocatalysts for the degradation of heat-stable mycotoxin PAT in simulated juice. The results showed that calcinated TNTs-450 had high adsorption performance and photocatalytic activity, completely degrading PAT within a short period of time.
JOURNAL OF FOOD ENGINEERING
(2022)
Article
Engineering, Environmental
Xin Yu, Jielin Huang, Jingjing Zhao, Shuaifei Liu, Dandan Xiang, Yanting Tang, Juan Li, Quanhui Guo, Xinqi Ma, Junwei Zhao
Summary: Efficient visible light photocatalytic elimination of pharmaceutical factory wastewater was achieved by introducing hybrid Ag/AgCl nanoparticles into Ti3+ self-doped TiO2 mesocrystals. The Ag/AgCl@Ti3+-TiO2 mesocrystals showed superior performance in degrading tetracycline under visible light, mainly attributed to the continuous attacks of photo-generated holes and radicals on tetracycline molecules.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Shankramma Kalikeri, Vidya Shetty Kodialbail
Summary: The present study synthesized Bismuth ferrite embedded TiO2 (BFO/TiO2) nanocomposites and demonstrated their promising application in the photocatalytic treatment of industrial effluents. The BFO/TiO2 nanocomposites showed good photocatalytic activity under visible and solar light, degrading various dyes in a mixed dye aqueous solution. The nanocomposites proved to be superior to BFO or TiO2 nanoparticles in terms of visible light activity.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Alejandra Romero-Moran, Jose L. Sanchez-Salas, Joel Molina-Reyes
Summary: The study established the influence of the crystalline phase and agglomeration degree of TiO2 nanoparticles on photocatalytic hydroxyl radical formation and bacterial inactivation in TiO2/SiO2 composite coatings. A relationship between hydroxyl radicals' formation and charge carrier transfer mechanism between defect levels in SiO2 and TiO2 embedded nanoparticles was established through a simple spectroscopic method. This correlation complements the lack of mechanisms behind the photocatalytic activity in TiO2/SiO2 composites.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Ayesha Sabir, Tauqir A. Sherazi, Qijie Xu
Summary: The Ag-doped TiO2 nanophotocatalyst embedded in a porous polymer showed efficient degradation of pollutants with a retention rate of 97% in up to 10 cycles, making it a sustainable solution for pollution abatement.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Physical
Shital B. Potdar, Chao-Ming Huang, B. V. S. Praveen, Sivakumar Manickam, Shirish H. Sonawane
Summary: An ultrasound approach was attempted to synthesize highly photoactive TiO2 nanoparticles doped with Pt. The synthesized photocatalyst showed enhanced surface characteristics and uniform particle size distribution due to the effects of ultrasonic irradiation. The size and composition of the catalysts were confirmed by various characterization techniques. UV-Visible spectroscopy analysis revealed an increase in absorbance when Pt was added to TiO2, indicating a decrease in band gap energy.
Article
Chemistry, Physical
Stalin Coronel, Diana Endara, Ana Belen Lozada, Lucia E. Manangon-Perugachi, Ernesto de la Torre
Summary: The study evaluated the photocatalytic oxidation of cyanide using TiO2 supported on activated carbon in a continuous flow UV photo-reactor. Results showed that 97% of CN- was degraded within 24 hours due to combined photocatalytic oxidation and adsorption. The design of the continuous photo-reactor and the use of TiO2-AC composites enhanced the photocatalytic cyanide oxidation performance.
Article
Environmental Sciences
Eva Jimenez-Relinque, Siaw Foon Lee, Lorenzo Plaza, Marta Castellote
Summary: This study presents an economical and efficient method for decolourising dye wastewater using industrial waste stainless steel slag as a catalyst support. Titanium dioxide was immobilised on the slag surface, and the composite material showed excellent photocatalytic and adsorption capacities for organic pollutants. The results suggest that the TiO2 loading and dispersion on the slag surface are crucial for achieving high catalytic performance, and the slag itself acts as an efficient adsorption trap. This conversion approach has great potential for practical applications in dye water treatment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Mikhail Lyulyukin, Tikhon Filippov, Svetlana Cherepanova, Maria Solovyeva, Igor Prosvirin, Andrey Bukhtiyarov, Denis Kozlov, Dmitry Selishchev
Summary: This study confirms that solid uranium oxycompounds and uranyl-grafted materials on nanocrystalline anatase TiO2 exhibit higher photocatalytic activity under visible light, with a significantly higher reaction efficiency compared to commercial photocatalysts.
Article
Environmental Sciences
Woottikrai Chairungsri, Arisa Subkomkaew, Pimluck Kijjanapanich, Yothin Chimupala
Summary: The research focused on immobilizing TiO2 onto glass and iron beads substrates by calcining the composite materials at different temperatures. SEM and EDS analyses showed that TiO2 particles were evenly distributed on the substrates at 700 degrees C, with mixed-phase anatase and rutile structures beneficial to photocatalysis. The composite materials achieved a direct dye photodegradation efficiency of 64.0% at 4 h, with high stability of the immobilized TiO2 on the fixed substrates even after reuse.
Article
Chemistry, Multidisciplinary
Shibo Yuan, Peng Bai, Yi He, Jiafa Chen, Yicheng Zhao, Yongdan Li
Summary: Photocatalytic N-formylation of amines with CO2 is achieved using a black TiO2-supported Cu photocatalyst prepared through a solvothermal method. Reduction with H-2 results in the formation of Cu nanoparticles and oxygen vacancies on the surface of the photocatalyst, enhancing the photocatalytic activity. A 100% conversion and an 81% yield of N-methylformanilide are achieved after 9 hours of radiation. The amount of NaBH4 and the pressure of CO2 significantly affect the activity and selectivity of the photocatalytic process.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Chemistry, Multidisciplinary
Duoduo Gao, Jiachao Xu, Huogen Yu, Yongping Liu, Jiaguo Yu
Summary: A hydroxyl-enriched highly crystalline TiO2 suspensible photocatalyst was synthesized using a simple ethanol-controlled hydrolysis and in situ crystallization method, and exhibited a significantly higher H-2 evolution rate than the well-known commercial P25 TiO2 without any cocatalysts.
CHEMICAL COMMUNICATIONS
(2021)
Article
Environmental Sciences
Yangmo Zhu, Tianyuan Xu, Dongye Zhao
Summary: This study investigated the application of metal-doped, activated carbon supported titanate nanotubes in photocatalytic degradation of PFAS. By conducting experiments and characterizations, the optimal preparation conditions and recipe were determined, and the photocatalyst achieved a high level of defluorination efficiency for PFOS. These research findings provide guidance for the preparation and optimization of composite photocatalysts for efficient adsorption and photocatalytic degradation of PFAS in water.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Angela Garcia-Gil, Javier Marugan, Davide Vione
Summary: Sunlight is able to trigger direct virus inactivation, which can be predicted by a global-scale model. The model uses the equivalent monochromatic wavelength approach, which has been extended to different seasons and latitudes. This model is practical for predicting the first-order rate constant of direct virus photoinactivation on a global scale.
Article
Engineering, Environmental
Angela Garcia-Gil, Maria Dolores Molina-Ramirez, Rafael A. Garcia-Munoz, Ramesh Marasini, Lyndon Buck, Kevin G. McGuigan, Javier Marugan
Summary: This study aims to investigate the ageing of plastic materials used for manufacturing SODIS containers. The results showed that PMMA and PP with 1% UV stabiliser are ideal materials for SODIS devices, as they have stable optical and mechanical properties and transmit UVB radiation. PET has good mechanical properties but suffers from deterioration in optical properties and disinfection rates over time. PP without UV stabilisers degrades dramatically after a short exposure. A kinetic model considering the radiation spectral distribution was proposed to estimate the required solar exposure time for water disinfection using plastic SODIS containers.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Shabila Perveen, Cristina Pablos, Ken Reynolds, Simon Stanley, Javier Marugan
Summary: This study reveals the presence of antibiotic-resistant bacteria (ARB) in the effluent of a wastewater treatment plant (WWTP) and the growth of ARB/ARGs in microplastic biofilms. The abundance of viable ARB in the microplastic biofilms increased between days 3 and 5 and then decreased on days 7 and 9. ARGs were detected in the microplastic biofilms in both tap water and WWTP effluent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Cristina Adan, Cristina Pablos, Patricia Misis, Sandra Pascua, Javier Marugan
Summary: Immobilised TiO2 nanotube (TiO2-NT) electrodes were grown via electrochemical anodisation in an aqueous solution containing fluoride ions at different voltages. The photoactivity of the TiO2-NT electrodes was found to increase with the length of the nanotubes and the anodising potential. The TiO2-NT30V electrode generated free chlorine with enough concentration to achieve high levels of inactivation of bacteria and fungi, suggesting that it could be a promising alternative for in situ chlorine-based disinfection.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Multidisciplinary Sciences
Conor Reddick, Cintia Casado, Ken Reynolds, Simon Stanley, Cristina Pablos, Javier Marugan
Summary: In this study, radiometry and the discrete ordinate method (DOM) were utilized to determine the ideal target surface size and working distance for achieving highly uniform illumination from UVA LED lamps. The measurements conducted using scanning radiometry technique showed good agreement between horizontal incident radiation and full surface incident radiation measurements, with maximum uniformity found at a 15 mm working distance. The DOM simulation results also demonstrated good agreement with radiometry, indicating maximum uniformity at a 20 mm working distance. These findings highlight the potential of DOM simulations as a fast, low-cost, and reliable tool for designing UV lamps in various applications.
Article
Engineering, Environmental
Raffaella Pizzichetti, Ken Reynolds, Cristina Pablos, Cintia Casado, Eric Moore, Simon Stanley, Javier Marugan
Summary: This study evaluated the degradation of diclofenac using UV-B and UV-C LEDs alone and in combination with hydrogen peroxide and free chlorine. The UV-LEDs showed positive synergy in advanced oxidation processes, but the overall electricity demand was similar to UV alone due to the energy cost of the oxidants. Different kinetic degradation mechanisms at different wavelengths were proposed, and no significant synergy was found for the dual-wavelength system. The work highlights the potential of using wavelength-specific LEDs in water treatments.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Environmental Sciences
Miguel Martin-Somer, Cristina Pablos, Cristina Adan, Rafael van Grieken, Javier Marugan
Summary: In recent years, the improved efficiency of UV LED devices has led to an increase in research on UV LED water treatment. This paper provides an in-depth review of recent studies on the suitability and performance of UV LED-driven processes for water disinfection. The effects of different UV wavelengths and their combinations on the inactivation of microorganisms and repair mechanisms were analyzed. The use of UVC and 280 nm radiation showed potential for efficient water disinfection.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Luca Carena, Angela Garcia-Gil, Javier Marugan, Davide Vione
Summary: Chromophoric dissolved organic matter (CDOM) plays a crucial role in the photodegradation of contaminants in sunlit surface-water environments. It has been found that the sunlight absorption by CDOM can be approximated based on its monochromatic absorption at 560 nm, allowing for the assessment of CDOM photoreactions globally and particularly in the 60 degrees S to 60 degrees N latitude belt. By utilizing global lake databases and organic matter estimates, the steady-state concentrations of CDOM triplet states (3CDOM*) can be determined, with high values predicted in Nordic latitudes during summer.
Article
Engineering, Environmental
Cintia Casado, Veronica Yunta, Javier Marugan
Summary: This work presents a novel methodology for simulating photochemical processes for water disinfection using computational fluid dynamics (CFD). The methodology calculates and visualizes the disinfection performance as microorganisms move through the photoreactor by combining hydrodynamics, statistical trajectories, and radiation distribution. This approach allows for real-time monitoring of the disinfection process by coupling the cumulative radiation dose with inactivation kinetics.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Clara Sanchez-Perez, Sriluxmi Srimurugananthan, Carlos Sotelo-Vazquez, Sanjayan Sathasivam, Mingyue Wang, Javier Marugan, Ivan P. P. Parkin, Claire J. J. Carmalt
Summary: ZnO thin film coatings were synthesized by aerosol-assisted chemical vapor deposition (AACVD) with different Zn : O ratios, and the synthetic parameters for self-texturing were analyzed. The effects of Zn environment and temperature on the morphology of the coatings were evaluated. A non-pyrophoric molecular precursor was investigated and found to produce 002-oriented, compact, transparent ZnO thin coatings with minimal carbon contamination at 300°C and fast growth rates (>40 nm min(-1)). This new deposition approach provides a rapid method to achieve optoelectronic coatings at ambient pressure.
MATERIALS ADVANCES
(2023)
Article
Engineering, Environmental
Kris O'Dowd, Azahara Martinez-Garcia, Isabel Oller, Maria Inmaculada Polo-Lopez, Seila Couso-Perez, Elvira Ares-Mazas, Hipolito Gomez-Couso, Angela Garcia-Gil, Javier Marugan, Ramesh Marasini, Kevin G. McGuigan, Suresh C. Pillai
Summary: It is predicted that by 2025, over 50% of the global population will lack access to safe drinking water. Solar Disinfection (SODIS) using polyethylene terephthalate (PET) bottles has been identified as a suitable and low-cost method for water disinfection in rural areas. This study examines the use of polypropylene (PP) transparent jerrycans (TJC) as an alternative container for SODIS. The PP TJC demonstrated effective inactivation of microorganisms, non-toxicity to human cells, but degraded after two weeks of accelerated ageing.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Sarita S. Nair, Ramesh Marasini, Lyndon Buck, Rita Dhodapkar, Javier Marugan, K. Vijaya Lakshmi, Kevin G. McGuigan
Summary: There are various POU water treatment technologies available for removing or reducing microbial pathogens in untreated drinking water. However, uncertainty remains regarding the most suitable technology for rural populations. To compare different options, the study uses a life cycle assessment (LCA) approach, considering environmental impacts and analyzing direct carbon dioxide emission, particulate matter formation, and smog formation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
A. Raffaella P. Pizzichetti, Cristina Pablos, Carmen Alvarez-Fernandez, Ken Reynolds, Simon Stanley, Javier Marugan
Summary: This study investigates the kinetic and mechanistic aspects of microfiltration membrane fouling by polyamide (PA) and polystyrene (PS) particles, as well as the interactions between microplastics and the membrane during filtration. The results show that the prevailing mechanisms were pore blocking and cake layer formation. The kinetics of these mechanisms were influenced by the differences in particle shape, size distribution, and surface charge between PA and PS particles. Increasing the working transmembrane pressure resulted in optimal working conditions for both PA and PS filtration. The fouling induced by PA particles was higher due to their higher hydrophobicity and smaller size, while PS particles caused more abrasion on the membrane surface. Membrane fouling increased hydrophobicity and roughness, leading to further fouling. Modelling membrane fouling can improve the removal efficiency of microplastics and reduce secondary pollution.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Miguel Martin-Somer, Maria Dolores Molina-Ramirez, Maria Luisa Perez-Araujo, Rafael van Grieken, Javier Marugan
Summary: This study examines how to optimize the efficiency of solar light utilization in various UV-based photochemical water treatment processes. The use of sunlight in compound parabolic collector (CPC) photoreactors is compared to using solar energy for electricity generation in photovoltaic (PV) power systems that power LED lighting sources. Seven different solar processes were investigated for chemical oxidation and bacterial inactivation. The results showed that the most efficient process for oxidation of chemicals is PV-UVC LED+H2O2, while the most efficient process for bacterial inactivation is PV-UVC LED+H2O2. The study highlights the need to evaluate the optimal approach in reactor engineering for water-energy applications, considering the current and future improvements in PV and LED technology.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Maurice I. Osotsi, Xin Ling, Siqi Fu, Yuqin Xiong, Wang Zhang, Zhang Di, Javier Marugan
Summary: The BW-ZnWO4_x photocatalyst, prepared by combining Papilio paris wings and ZnWO4, effectively degraded levofloxacin and tetracycline antibiotics as well as hexavalent chromium, under UV, visible, and NIR light irradiation. This bio-inspired material shows potential for applications in solar harvesting and storage systems, security systems, and water treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Bolun Yu, Denan Li, Qianqian Zhu, Shufan Yao, Lifeng Zhang, Yanshuo Li, Zhenxin Zhang
Summary: This study successfully improved the catalytic activity of a zeolitic octahedral metal oxide by incorporating a single zinc species into its micropore. The zinc incorporation achieved a high ethane conversion rate and ethylene selectivity. Mechanism study showed that the isolated zinc site played a crucial role in activating oxygen and ethane, as well as stabilizing intermediates and transition states.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Ruoqi Liu, Hao Fei, Jian Wang, Ting Guo, Fangyang Liu, Zhuangzhi Wu, Dezhi Wang
Summary: This work successfully synthesized a high-performing S-enriched MoS2 catalyst for electrocatalytic nitrogen reduction reaction (NRR), demonstrating high activity and selectivity. The synergistic effect of the 1T phase and bridging S22- species was shown to play a positive role in NRR performances, and DFT calculations revealed the mechanism behind the improved performance.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Pan Xia, Lele Zhao, Xi Chen, Zhihong Ye, Zhihong Zheng, Qiang He, Ignasi Sires
Summary: This study presents a modified gas-diffusion electrode (GDE) for highly efficient and stable H2O2 electrosynthesis by using trace polymethylhydrosiloxane (PMHS). DFT calculations provide an in-depth understanding of the roles of PMHS functional groups.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Kwangchol Ri, Songsik Pak, Dunyu Sun, Qiang Zhong, Shaogui Yang, Songil Sin, Leliang Wu, Yue Sun, Hui Cao, Chunxiao Han, Chenmin Xu, Yazi Liu, Huan He, Shiyin Li, Cheng Sun
Summary: Different B-doped rGO catalysts were synthesized and their 2e- oxygen reduction reaction (ORR) performance was investigated. It was found that the 2e- ORR selectivity of B-doped rGO was influenced by the B content and oxygen mass transfer conditions. The synthesized catalyst exhibited high 2e- ORR selectivity and was capable of degrading organic pollutants continuously.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Li Lv, Lin Lei, Qi-Wen Chen, Cheng-Li Yin, Huiqing Fan, Jian-Ping Zhou
Summary: Monoclinic phase La2Ti2O7 and orthorhombic phase Bi4Ti3O12 are widely used in photocatalysis due to their layered crystal structure. The electronic structures of these phases play a crucial role in their photocatalytic activity. Heat treatment in a nitrogen atmosphere introduces more oxygen vacancies into the S-scheme heterojunction, leading to enhanced NO removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Choe Earn Choong, Minhee Kim, Jun Sup Lim, Young June Hong, Geon Joon Lee, Keun Hwa Chae, In Wook Nah, Yeomin Yoon, Eun Ha Choi, Min Jang
Summary: In this study, the synergistic effect between argon-plasma-system (AP) and catalysts in promoting the production of reactive species for water remediation was investigated. By altering the oxygen vacancies concentration of CeO2/Bi2O3 catalyst, the production of hydrated electrons was stimulated for PFOA removal. The results showed that the built-in electric field in the Bi/Ce0.43 interface enhanced electron migration and eaq- generation, leading to improved PFOA removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yushan Wu, Di Xu, Yanfei Xu, Xin Tian, Mingyue Ding
Summary: Efficient synthesis of primary amines from carbonyl compounds was achieved via reductive amination using Ru@NC-Al2O3 as a catalyst, exhibiting high activity and selectivity under mild conditions.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yilan Jiang, Peifang Wang, Tingyue Chen, Keyi Gao, Yiran Xiong, Yin Lu, Dionysios D. Dionysiou, Dawei Wang
Summary: By controlling the content of Co and Ni in Co1-xNixFe2O4, the production of O-1(2) from H2O2 can be regulated. NiFe2O4, with the lowest lattice distortion degree, can efficiently produce O-1(2) as the dominant reactive oxygen species. The system also exhibits significant resistance to water matrix interference.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng
Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Jia-Cheng E. Yang, Min -Ping Zhu, Daqin Guan, Baoling Yuan, Darren Delai Sun, Chenghua Sun, Ming-Lai Fu
Summary: This study successfully modulated the electron configuration and spin state of millimetric metal catalysts by adjusting the support curvature radius. The electronic structure-oriented spin catalysis was found to affect the degradation of pollutants, providing new insights for the design and production of highly active, reusable, and stable catalysts.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Tao Zhong, Su Tang, Wenbin Huang, Wei Liu, Huinan Zhao, Lingling Hu, Shuanghong Tian, Chun He
Summary: In this study, a highly efficient photocatalyst for the elimination of CH3SH was developed by engineering different crystal facets and coupling them with PHI. Cu (111)/PHI exhibited the highest elimination efficiency and showed good stability and reusability. The enhanced surface electron pump effect and effective adsorption mechanisms were revealed through comprehensive characterizations and DFT calculations.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Feifei Yang, Tianyu Zhang, Jiankang Zhao, Wei Zhou, Nicole J. Libretto, Jeffrey T. Miller
Summary: A Ni3Sn intermetallic nano particle was found to have geometrically isolated Ni sites that could selectively cleave C-O bonds in biomass derivatives. This nano particle showed high activity and selectivity towards 2-methylfuran, unlike Ni nanoparticles that produced other unwanted products derived from the aromatic rings.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Lulu Qiao, Di Liu, Anquan Zhu, Jinxian Feng, Pengfei Zhou, Chunfa Liu, Kar Wei Ng, Hui Pan
Summary: This study reveals that surface evolution plays a crucial role in enhancing the electrocatalytic performance of transition metal oxides for electrochemical nitrate reduction reaction (e-NO3RR). Incorporating nickel into Co3O4 can promote surface reconstruction and improve the adsorption of intermediates and reduce energy barriers, leading to enhanced catalytic performance. The reconstructed cobalt-nickel hydroxides (CoyNi1_y(OH)2) on the catalyst's surface serve as the active phase.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Xinyu Song, Yang Shi, Zelin Wu, Bingkun Huang, Xinhao Wang, Heng Zhang, Peng Zhou, Wen Liu, Zhicheng Pan, Zhaokun Xiong, Bo Lai
Summary: This study explores the discriminative activities and mechanisms for activation of O-O bond in peroxy compounds via single-atom catalysts (SACs) with higher coordination numbers (M-N5). The atomic catalyst (Fe-SAC) with Fe-N5 as the active center was constructed, effectively activating peroxymonosulfate (PMS), peroxydisulfate (PDS), and hydrogen peroxide (H2O2). The study demonstrates the degradation efficiencies of acyclovir are related to the O-O bond length in different peroxy compounds, and reveals the discriminative mechanisms for activation of O-O bond in different Fenton-like systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Yangzhuo He, Hong Qin, Ziwei Wang, Han Wang, Yuan Zhu, Chengyun Zhou, Ying Zeng, Yicheng Li, Piao Xu, Guangming Zeng
Summary: A dual-metal-organic framework (MOF) assisted strategy was proposed to construct a magnetic Fe-Mn oxycarbide anchored on N-doped carbon for peroxymonosulfate (PMS) activation. The FeMn@NC-800 catalyst exhibited superior activity with almost 100% degradation of sulfamethazine (SMZ) in 30 minutes. The study provided insights for the rational design of high-performance heterogeneous catalysts and proposed a novel nonradical-based catalytic oxidation for environmental cleaning.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
