Article
Engineering, Environmental
John J. Alvear-Daza, Alejandra Garcia-Barco, Paula Osorio-Vargas, Hector M. Gutierrez-Zapata, Janeth Sanabria, Julian A. Rengifo-Herrera
Summary: The addition of H2O2 into natural well water samples containing natural total iron concentrations resulted in inactivation of E. coli and Klebsiella pneumoniae under simulated solar light. Post-irradiation effects showed that viability of both bacteria kept dropping, with E. coli cells completely reduced while K. pneumoniae decreased only by 1-log. SEM micrographs indicated morphological changes and size reduction of the bacteria cells according to VBNC states, suggesting potential bacteria abatement mechanisms influenced by physical-chemical features of groundwater samples.
Review
Chemistry, Inorganic & Nuclear
Leena V. Bora, Nisha V. Bora, Gopal Koladia
Summary: This article discusses effective strategies to enhance the process of solar photocatalytic pathogen disinfection, which can improve disinfection efficiency through the use of photocatalysis and other potent techniques.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Environmental Sciences
Juan Li, Ruixian Yang, DanDan Hu, Yanchong Xu, Zhanqiang Ma
Summary: This study investigated the disinfection performance of S-doped g-C3N4 nanosheets (S-CNNs) under visible light and found that S doping and the 2D structure of S-CNNs had a synergistic effect on photocatalytic disinfection. Scavenger experiments revealed that center dot O-2(-) and h(+) were the predominant reactive species. Additionally, the disinfection activity of S-CNNs was higher than that of bulk g-C3N4.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Ceramics
Shreya Singh, Rahul Garg, Atanu Jana, Chinna Bathula, Soniya Naik, Mona Mittal
Summary: Clean water is essential for all living beings, but pollution caused by rapid industrialization, population growth, urbanization, global warming, extensive agriculture, and climate change has made access to clean water difficult. Wastewater treatment has become a top priority for every country due to the number of deaths caused by diseases related to waste or polluted water. Nanotechnology provides potential solutions for improving water purification and disinfection, with metal oxide nanoparticles offering unique properties and applications in removing pollutants from wastewater.
CERAMICS INTERNATIONAL
(2023)
Article
Biotechnology & Applied Microbiology
So-Seum Yong, Jae-Ik Lee, Dong-Hyun Kang
Summary: This study investigated the photocatalytic activity of TiO2-based photocatalysts in inactivating foodborne pathogens in various environments. The results showed that Degussa P25 under UVA exhibited the highest bactericidal effects.
Article
Engineering, Environmental
Sofia Samoili, Giulio Farinelli, Jose Angel Moreno-SanSegundo, Kevin G. McGuigan, Javier Marugan, Cesar Pulgarin, Stefanos Giannakis
Summary: This study assessed the efficacy of Solar water disinfection (SODIS) in removing bacterial pathogens through experiments and simulations, proposing new theoretical models. The results indicated that most African regions are suitable for SODIS processes, but there are areas of risk correlated with climatological conditions.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Ying-Ying Wang, Yan-Xin Chen, Tarek Barakat, Yu-Jia Zeng, Jing Liu, Stephane Siffert, Bao-Lian Su
Summary: Non-metal doping can enhance the visible light activity of TiO2-based photocatalysts by reducing the band gap and suppressing the recombination of electron-hole pairs. Different non-metal elements such as N, C, B, S, P, Halogens act as dopants to improve the efficiency of photocatalysis and photoelectrochemical water splitting.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Environmental Sciences
Aditi Kulkarni, Kiran Manohar, Girivyankatesh Hippargi, Pratap Reddy Maddigapu, Rita Dhodapkar, Sadhana Suresh Rayalu
Summary: Solar pasteurization is a reliable and cost-effective method for eliminating microbial pathogens in water. This study presents a nano-SODIS bottle coated with plasmonic carbon nanoparticles (CNP) that effectively kills targeted pathogens through nanophotonic-triggered thermal enhancement. The CNPs have high solar radiation harvesting efficiency and can generate powerful heating to inactivate microorganisms. The nano-SODIS bottles achieved a temperature of 65-70 degrees C within 90 minutes of solar exposure, resulting in a threefold reduction in disinfection period compared to conventional methods. The CNP-coated bottles provide a simple, durable, and user-friendly solution for providing pathogen-free drinking water in rural and slum areas.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Paul Kant, Shengzhi Liang, Michael Rubin, Geoffrey Alan Ozin, Roland Dittmeyer
Summary: Solar-driven photocatalytic processes offer hopes and dreams for a sustainable future, utilizing carbon dioxide and water as feedstocks for energy and carbon production. However, low efficiencies and high costs are hurdles for scaling up photocatalytic processes. This contribution introduces a low-cost, panel-like photoreactor concept suitable for small-scale and large-scale solar farm applications, achieving high photocatalytic efficiency with a simple design. Optical modeling and analysis establish a design guideline, connecting parameters and performance metrics at a universal level for solar-driven photosynthesis.
Article
Chemistry, Physical
M. Roshith, Abhishek Pathak, A. K. Nanda Kumar, Gopalraman Anantharaj, Vijayaraghavan Saranyan, S. Ramasubramanian, T. G. Satheesh Babu, Darbha V. Ravi Kumar
Summary: A non-metallic red phosphorus-based photocatalyst for potential continuous flow water disinfection was reported. The immobilized photocatalyst in the reactor demonstrated a 6.7 log reduction in E. coli concentration under direct sunlight within 14 minutes, showing high efficiency of the process and suggesting great potential for commercial scale-up.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Siqi Liu, Weiliang Qi, Jue Liu, Xiangjian Meng, Samira Adimi, J. Paul Attfield, Minghui Yang
Summary: The synthesis of transition metal (M = V, Mo, and W) doped cobalt nitride catalyst for solar to hydrogen energy conversion is reported. The as-prepared cobalt nitride was found to contain lattice defects. M-doping improved charge carrier separation efficiency and reaction kinetics by altering the electronic structure and properties of cobalt nitride. The optimal V-Co3.75N0.14-Eosin-Y system exhibited a hydrogen evolution rate of 21.21 μmol·mg-1·h-1 and a quantum efficiency of 38% at 405 nm excitation wavelength, surpassing previous hybrid photocatalysts.
Review
Chemistry, Multidisciplinary
Timothy O. Ajiboye, Stephen O. Babalola, Damian C. Onwudiwe
Summary: The review covers the use of photocatalysis for the elimination of Escherichia coli from drinking water, highlighting its advantages, challenges, and strategies. It provides detailed insights into the photocatalytic process and various methods for detecting and estimating E. coli in drinking water.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Environmental
Zhenda Liang, Haiqing Wang, Kena Zhang, Ge Ma, Lishan Zhu, Li Zhou, Bing Yan
Summary: This study explores the modification of MnO2 with ZIF-8 to improve photocatalytic bactericidal performance, achieving complete inactivation of multi-drug resistant E. coli at a low concentration. The study identifies 1O2 as the major reactive species for bacterial inactivation and attributes the superior bactericidal property of MnO2/ZIF-8 to increased surface oxygen vacancies and inhibited electron and hole recombination.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Maria Leonor Matias, Ana Pimentel, Ana S. Reis-Machado, Joana Rodrigues, Jonas Deuermeier, Elvira Fortunato, Rodrigo Martins, Daniela Nunes
Summary: Polyethylene glycol-modified titanium dioxide nanopowders were successfully prepared using a fast solvothermal method under microwave irradiation. The addition of different molar ratios of iron precursor was found to affect the photocatalytic performance of the produced materials. The characterization results showed that Fe-TiO2 nanostructures exhibited improved photocatalytic activity and could be promising for the removal of organic dyes from wastewater.
Review
Engineering, Environmental
Julian A. Rengifo-Herrera, Cesar Pulgarin
Summary: Heterogeneous photocatalysis has long been considered as a potential method for water treatment, but its practical application has been hindered by thermodynamic limitations, kinetical drawbacks, and engineering challenges. This critical review focuses on TiO2-based photocatalysis and discusses its drawbacks, limitations, and unsuccessful strategies to overcome them. The ultimate goal is to develop a new photocatalyst that can efficiently degrade pollutants and reduce treatment time.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biotechnology & Applied Microbiology
Andreas Kaliakatsos, Iosifina Gounaki, Spyros Dokianakis, Emmanouela Maragkaki, Athanasios S. Stasinakis, Stylianos Gyparakis, Nikos Katsarakis, Thrassyvoulos Manios, Michalis S. Fountoulakis, Danae Venieri
Summary: This study investigated the effectiveness of photocatalysis in purifying hospital wastewater, and found that it can effectively remove pharmaceutical residues and pathogenic bacteria, as well as alter the antibiotic resistance of surviving bacteria. However, considerable concentrations of antibiotic-resistant genes were still present in the effluents, which may contribute to antibiotic resistance in aquatic bacterial communities.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Spyridon Giannakopoulos, John Vakros, Ioannis D. Manariotis, Dionissios Mantzavinos, Panagiotis Lianos
Summary: Biochar was obtained from spent malt rootlets through pyrolysis under limited oxygen supply and further activated by mixing with KOH and pyrolyzing again at high temperature. The activated biochar showed a total specific surface area of 1148 m(2) g(-1) and a micropore specific surface area of 690 m(2) g(-1). When used as an electrode in combination with a photoelectrochemical cell, the biochar electrode acted as a supercapacitor with a specific capacity of 98 Fg(-1), capable of storing and utilizing charges generated by the cell under both illuminated and dark conditions. Additionally, the same electrode exhibited electrocatalyst properties as an air-cathode, enabling oxygen reduction.
Article
Chemistry, Physical
Spyridon Giannakopoulos, John Vakros, Zacharias Frontistis, Ioannis D. Manariotis, Danae Venieri, Stavros G. Poulopoulos, Dionissios Mantzavinos
Summary: Pyrolysis of lemon stalks at 850 degrees C under limited oxygen produces highly active and selective biochar that can activate persulfate ion and oxidize sulfamethoxazole (SMX). The biochar consists mainly of carbon and oxygen atoms, with calcium and potassium as the most abundant minerals. It has a moderate specific surface area of 154 m(2) g(-1) and contains carbonate species, possibly in the form of calcium carbonate. In ultrapure water, complete degradation of 0.5 mg L-1 SMX can be achieved within 20 minutes using 500 mg L-1 sodium persulfate (SPS) and 100 mg L-1 biochar. The biochar remains stable for at least five cycles and shows potential as a sustainable, metal-free catalyst.
Article
Chemistry, Multidisciplinary
Abdus Salam Sarkar, Ioannis Konidakis, E. Gagaoudakis, G. M. Maragkakis, S. Psilodimitrakopoulos, D. Katerinopoulou, L. Sygellou, G. Deligeorgis, Vassilios Binas, Ilias M. Oikonomou, Philomela Komninou, G. Kiriakidis, G. Kioseoglou, E. Stratakis
Summary: Recent advances in atomically thin 2D anisotropic group IVA-VI metal monochalcogenides (MMCs) are hindered by the challenge of monolayer isolation. However, a novel liquid phase exfoliation approach has been developed to overcome the strong interlayer binding energy of tin (II) sulfide (SnS) and successfully isolate highly crystalline SnS monolayers (1L-SnS). The exfoliated 1L-SnS crystals exhibit high carrier mobility and deep-UV spectral photodetection, making them ideal for nanoelectronic devices.
Article
Nanoscience & Nanotechnology
Sofia Stefa, Maria Griniezaki, Marinos Dimitropoulos, George Paterakis, Costas Galiotis, George Kiriakidis, Emmanuel Klontzas, Michalis Konsolakis, Vassilios Binas
Summary: In this study, the physicochemical properties and enhanced adsorption capacity of highly porous thin-layer graphitic carbon nitride (g-C3N4) nanosheets (CNNs) for dye separation were investigated. Highly porous g-C3N4 nanosheets were synthesized and compared with the bulk material. The results showed that the nanosheets had a well-oriented structure, adequate chemical stability, and a higher surface area. Adsorption experiments demonstrated that the nanosheets had excellent selective adsorption capacity for cationic dyes, with short equilibrium times. The experimental findings were further supported by theoretical calculations.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Chemical
D. Kalampaliki, G. D. T. M. Jayasinghe, E. Avramiotis, I. D. Manariotis, D. Venieri, S. G. Poulopoulos, J. Szpunar, J. Vakros, D. Mantzavinos
Summary: In this study, valorized biomass was pyrolyzed and activated with potassium hydroxide to produce a biochar with a high specific surface area and significant amounts of surface oxygen species and carbonates. The activated biochar was used as an activator for sodium persulfate to induce the adsorption and oxidation of sulfamethoxazole in various water matrices. The degradation of sulfamethoxazole followed a pseudofirst order kinetic law, and the oxidation mechanism involved radical pathways and/or electron transfer.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Biotechnology & Applied Microbiology
Aphroditi Kyriazi, Iosifina Gounaki, Dionissios Mantzavinos, Danae Venieri
Summary: This article discusses the role of water matrix in the advanced treatment of watercourses. The experimental work shows that activated persulfate is effective in deionized water for inactivating three types of bacteria, but ineffective in other matrices. On the other hand, UVC radiation is highly efficient against all bacteria in all matrices. The complexity of the matrix plays a significant role in the efficiency of water treatment processes.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Engineering, Environmental
Collen Nepfumbada, Nikita Tawanda Tavengwa, Vhahangwele Masindi, Spyros Foteinis, Efthalia Chatzisymeon
Summary: This study proposes a co-management method for municipal wastewater (MWW) and acid mine drainage (AMD), in which low-value phosphorus recovered from MWW is used to treat AMD. MWW was treated with calcium hydroxide (Ca(OH)2) to greatly reduce ammonia content (89%) and practically eliminate phosphates (>99%). The recovered low-value phosphorus material, in the form of calcium phosphate (Ca3(PO4)2), was then used to treat AMD from coal mining. The treatment effectively depleted metals in AMD (>99% removal) and greatly reduced sulphate (SO4) content (90.6%), under optimal conditions of 90 min contact time, 10 g L-1 Ca3(PO4)2 dosage, and room temperature and ambient pH. The method shows promise for sustainable management of wastewater matrices and can contribute to advancing the UN's sustainable development goals.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Environmental Sciences
Alexandra A. Ioannidi, Joanne Zappa, Athanasia Petala, Manolis Souliotis, Dionissios Mantzavinos, Zacharias Frontistis
Summary: The pursuit of low-cost, high-efficiency co-catalysts without noble metals in photocatalysis has attracted significant interest in recent years. In this study, a series of cobalt phosphide (CoP 0.125-1.00 wt.%) promoted bismuth vanadate (BiVO4) photocatalysts were synthesized and characterized. The efficiency of these photocatalysts was investigated for sulfamethoxazole (SMX) degradation under simulated solar light irradiation. The results showed that the deposition of a small amount of CoP on BiVO4 enhanced SMX degradation.
Article
Chemistry, Physical
Athanasios Lampropoulos, Stamatia A. Karakoulia, Georgios Varvoutis, Stavros Spyridakos, Vassilios Binas, Leila Zouridi, Sofia Stefa, Michalis Konsolakis, George E. Marnellos
Summary: The individual and synergistic effect of Ni-based catalysts and an eutectic carbonate salt mixture on the CO2 gasification performance of olive kernels was investigated. It was found that the Ni/CeO2 catalyst showed a higher gasification reaction rate compared to Ni/Al2O3. The use of the carbonate salt mixture lowered the gasification temperatures and improved the carbon conversion efficiency. The combination of Ni-based catalysts and carbonate salt mixture enhanced the gasification process and increased the CO production rate.
Article
Materials Science, Multidisciplinary
S. Stefa, M. Zografaki, M. Dimitropoulos, G. Paterakis, C. Galiotis, P. Sangeetha, G. Kiriakidis, M. Konsolakis, V. Binas
Summary: In this study, porous g-C3N4 nanosheets with high surface area were prepared and found to exhibit superior photocatalytic performance for the degradation of dangerous chemical compounds.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Analytical
Emmanouil Gagaoudakis, Apostolos Tsakirakis, Marilena Moschogiannaki, Angeliki Sfakianou, Vassilios Binas
Summary: NiO/SnO2 heterostructures were prepared via the polyol process and found to exhibit response to NO gas at room temperature. The morphology of the heterostructures could be controlled by the temperature of thermal annealing. The effects of pH and thermal annealing on the gas-sensing properties were investigated.
Article
Engineering, Environmental
Thomas Easton, Vasileios Koutsos, Efthalia Chatzisymeon
Summary: This study investigates the removal of microplastics through UV irradiation and hydrogen peroxide treatment. The mass loss, carbonyl index change, and physical changes on the surface of the microplastics were monitored. The results show that a dose of 500 mg L-1 H2O2 under 4.0 mW cm-2 UVC irradiation resulted in a mass loss of 52.7% after 48 hours, with degradation occurring through the formation of shallow holes, pits, and cracks on the surface. The proposed UVC/H2O2 treatment could degrade 15.2% of microplastics and completely remove COD in real hospital laundry wastewater within 9 hours and 3 hours, respectively.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Majid Ghanimati, Mohsen Lashgari, Fabio Montagnaro, Vassilios Binas, Michalis Konsolakis, Marco Balsamo
Summary: The synthesis of low-cost, eco-friendly semiconducting solar-energy materials with excellent photocatalytic activity is important for environmental remediation, green energy, and fuel production. In this study, a magnetic heterojunction of CoMn2O4-MgFe2O4 and reduced graphene oxide (rGO) was synthesized, and the resulting nanocomposite exhibited improved reactant adsorption capacity and enhanced photocatalytic activity for hydrogen fuel production.
MATERIALS ADVANCES
(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)