Article
Nanoscience & Nanotechnology
Jiaxu Liu, Yajun Zou, Daniel Cruz, Aleksandr Savateev, Markus Antonietti, Gianvito Vile
Summary: By adjusting the textural properties of materials, highly dispersed metal single atoms can be achieved on mesoporous graphitic C3N4, enabling ligand-to-metal charge transfer or ligand-to-metal-to-ligand charge transfer. The developed materials can be used to efficiently degrade organic pollutants under visible light irradiation.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Jiachao Shen, Chenghui Luo, Shanshan Qiao, Yuqing Chen, Yanhong Tang, Jieqiong Xu, Kaixing Fu, Dingwang Yuan, Haifang Tang, Hao Zhang, Chengbin Liu
Summary: By bridging single-atom Cu into the interlayers of C3N4 and introducing N vacancies, high-efficiency photoinduced electron/hole pair separation and interlayer charge transport were achieved, leading to more effective photocatalytic hydrogen production. With the presence of 1 wt% Pt cocatalyst, the photocatalyst exhibited a high visible-light photocatalytic hydrogen production rate (11.23 mmol g-1 h-1) and a high apparent quantum yield (31.60%) at 420 nm. It is worth noting that the photocatalyst still demonstrated a high hydrogen production rate (605.15 smol g-1 h-1) in the absence of the Pt cocatalyst.
Article
Nanoscience & Nanotechnology
Vincenzo Ruta, Alessandra Sivo, Lorenzo Bonetti, Mark A. Bajada, Gianvito Vile
Summary: In this study, the degradation of the persistent pollutant gemfibrozil on carbon nitride photocatalysts was systematically investigated. The surface nanostructure of carbon nitride and metal single atoms were found to have an impact on the degradation. Particularly, the use of silver on mesoporous carbon nitride single-atom catalyst achieved efficient degradation of gemfibrozil. The results suggest that carbon nitride catalysts have broad potential for the light-driven degradation of other contaminants.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Environmental
Yidong Hu, Yunteng Qu, Yansong Zhou, Zhiyuan Wang, Huijuan Wang, Bo Yang, Zhenqiang Yu, Yuen Wu
Summary: The introduction of atomically dispersed Pt in graphitic carbon nitride as Pt SAs/C3N4 photocatalyst, with Pt-N bonds serving as a bridge for electron transfer, significantly improves the photocatalytic efficiency for hydrogen evolution.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Xiao Zhang, Bin Ren, Xi Li, Yanhua Xu, Biming Liu, Peng Yu, Yongjun Sun, Danhua Mei
Summary: In this study, a modified graphitic carbon nitride was used as an efficient photocatalyst for high removal efficiency of dye contaminants in water. The Ag@AgBr/CN/Fe3O4 photocatalyst showed a 96% removal rate for RhB within 150 min, with high stability and enhanced photocatalytic activity compared to CN and CN/Fe3O4.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Feng Chen, Xi-Lin Wu, Chenyang Shi, Hongjun Lin, Jianrong Chen, Yanpeng Shi, Shaobin Wang, Xiaoguang Duan
Summary: A novel transition metal single-atom catalyst has been developed for efficient heterogeneous Fenton-like reactions, showing excellent cyclic stability and a wide effective pH range. The catalyst accelerates the production and separation of charge carriers, enhancing the reaction performance.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xiaoyang Yue, Lei Cheng, Chen Guan, Yulong Liao, Zhihua Xu, Kostya Ken Ostrikov, Quanjun Xiang
Summary: Dual single-atom catalysts (DSACs) have the potential to break the scaling relationships and ensure synergistic effects. This study incorporates dual single-atoms into carbon nitride to create catalysts with specific locations and functions. Experimental and computational results show that these catalysts exhibit excellent catalytic activity, leading to increased CO yield. DFT calculations provide insights into the inherent transformation between Pd sites and CO2 molecules, which influences the reaction pathway.
Article
Chemistry, Multidisciplinary
Zhenghui Wen, Ting Wan, Arjun Vijeta, Carla Casadevall, Laura Buglioni, Erwin Reisner, Timothy Noel
Summary: The mesoporous carbon nitride (mpg-CNx) photocatalyst enables efficient azolation of various arenes through direct oxidation, with a broad substrate scope and high photocatalytic stability. This method offers a greener and more sustainable route for the late-stage functionalization of pharmaceuticals.
Article
Chemistry, Multidisciplinary
Gang Wang, Rong Huang, Jiangwei Zhang, Junjie Mao, Dingsheng Wang, Yadong Li
Summary: The efficient separation of photo-generated electrons and holes is achieved by utilizing a dual atomic sites strategy on polymeric carbon nitride, which significantly enhances photocatalytic performance. This study provides a new perspective for the rational design of high performance photocatalysts at atomic level.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Applied
Man Yang, Jing Mei, Yujing Ren, Jie Cui, Shuhua Liang, Shaodong Sun
Summary: The development of novel single-atom catalysts with optimal electron configuration and economical noble-metal cocatalyst for efficient photocatalytic hydrogen production is of great importance, but still challenging. In this study, Pt and Co single-atom sites were successfully fabricated on polymeric carbon nitride (CN). By introducing single-atomic Pt1N4 sites, the noble-metal active sites were maximized, and the single-atomic Co1N4 sites were tuned to Co1N3 sites by photogenerated electrons. The synergistic effect at electron-level was demonstrated, providing electron-level guidance for the design of efficient photocatalysts.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Engineering, Environmental
Yufei Zhou, Mingchuan Yu, Qianyu Zhang, Xiaoli Sun, Junfeng Niu
Summary: Regulating local electron density by introducing single-atom is an effective strategy to improve the activity of heterogeneous photo-Fenton processes. In this study, N, P coordinated Fe and Ni single-atom catalysts on carbon nitrides (CN-FeNi-P) were prepared and used to activate H2O2 for contaminant mineralization. The results showed that CN-FeNi-P exhibited significantly higher moxifloxacin degradation activity compared to pristine CN, with a TOC removal of 95.9% in 60 minutes. Density functional theory calculations revealed that Ni single-atoms served as the optimal reactive sites for producing center dot OH. The strong interaction between Fe and Ni single-atoms by P-bridging and the modulated local electron structure after introducing P into the coordination environment contributed to lower center dot OH formation energy.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Han Li, Qinjun Song, Sijie Wan, Ching-Wei Tung, Chengyuan Liu, Yang Pan, GuoQiang Luo, Hao Ming Chen, Shaowen Cao, Jiaguo Yu, LianMeng Zhang
Summary: Single-atom Pt anchored on 3D hierarchical TiO2-Ti3C2 with atomic-scale interface engineering is synthesized through an in situ transformation and photoreduction method. The optimized photocatalyst exhibits excellent CO2-to-CO conversion activity of 20.5 mu mol g(-1) h(-1) with a selectivity of 96%, which is five times that of commercial TiO2 (P25). This work sheds new light on designing ideal atomic-scale interface and single-atom catalysts for efficient solar fuel conversation.
Article
Chemistry, Physical
Guoen Tang, Huicong Zhang, Ting Song, Shiheng Yin, Guojiang Mao, Bei Long, Atif Ali, Guo-Jun Deng
Summary: This study successfully achieved high-selectivity photocatalytic conversion of CO2 into high-calorific-value hydrocarbon fuels by synthesizing 2D polymers with different porous structures. Experiments and theoretical calculations showed that the ultrafine porous structure provides a short carrier transport distance, enabling efficient CO2 conversion.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Camila Rivera-Carcamo, Canio Scarfiello, Ana B. Garcia, Yann Tison, Herve Martinez, Walid Baaziz, Ovidiu Ersen, Carole Le Berre, Philippe Serp
Summary: This study presents a simple and effective method for stabilizing nickel and ruthenium single atoms by creating vacancies on carbon nanotubes or TiO2, leading to the preparation of ultra-dispersed catalysts. The research demonstrates that catalysts supported on TiO2 are more active than those on carbon nanotubes, and nickel and ruthenium single atoms exhibit different product selectivity in the CO2 hydrogenation reaction.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Chemistry, Physical
Yingjie Wang, Daijun Xie, Guo Wang, Yishi Wu, Run Shi, Chao Zhou, Xiangfu Meng, Tierui Zhang
Summary: This study demonstrates the significant role of single-atomic Co-N4-O sites in exciton dissociation and charge carrier separation, leading to improved photocatalytic hydrogen production. The obtained CCN-Co sample shows a significantly higher hydrogen production rate and quantum yield compared to CCN and bulk g-C3N4.
Article
Chemistry, Multidisciplinary
Jakub Plasil, Gwladys Steciuk, Juraj Majzlan, Radek Skoda, Jan Filip, Martin Petr, Jan Kolarik, Mariana Klementova, Oliver Baehre, Gert Kloess, Ladislav Lapcak
Summary: The weathering of ore minerals produces initial products that are often poorly characterized but can significantly affect the fate of metals in the system. In this study, 3D electron diffraction techniques were used to characterize nanocrystalline phases in the weathering of uraninite-sulfide. The study identified previously unknown phases and revealed that the abundance of iron controls the formation of different weathering products.
ACS EARTH AND SPACE CHEMISTRY
(2022)
Article
Chemistry, Applied
Agata Przekora, Letizia Penolazzi, Grzegorz Kalisz, Paulina Kazimierczak, Cristina Canal, Michal Wojcik, Roberta Piva, Anna Sroka-Bartnicka
Summary: This study provides strong evidence of osteoclast-mediated acidic hydrolysis of thermally gelled curdlan gel. The research demonstrates microstructural and chemical changes on the curdlan surface caused by osteoclast culture. Furthermore, degradation tests using HCl solution mimic the environment in the resorption lacuna and show weight loss, glucose release, and chemical changes typical of curdlan degradation.
CARBOHYDRATE POLYMERS
(2022)
Article
Engineering, Chemical
Flavio Tollini, Lorenzo Brivio, Paolo Innocenti, Mattia Sponchioni, Davide Moscatelli
Summary: Plastic disposal poses a threat to the environment due to the lack of cost-effective technologies for producing high-quality polymers from scraps. This study investigates the efficiency of different catalytic systems in the methanolysis of PET and identifies potassium carbonate and dichloromethane as the most effective catalyst/cosolvent pair.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Arianna Zanoni, Cora Casiraghi, Riccardo Po, Paolo Biagini, Mattia Sponchioni, Davide Moscatelli
Summary: Redispersible polymer powders (RDPPs), which are dry powder additives used in the concrete industry, are mainly produced from fossil resources. This study focuses on developing bio-based RDPPs to reduce carbon footprint. Two types of bio-based core-shell nanoparticles were synthesized and found to be promising candidates as RDPPs. The powders were characterized and their potential as concrete additives were evaluated by examining changes in surface morphologies of concrete specimens.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2023)
Article
Engineering, Chemical
Arianna Zanoni, Flavio Tollini, Cora Casiraghi, Giuseppe Storti, Mattia Sponchioni, Davide Moscatelli
Summary: Engineered polylactic acid (PLA) nanoparticles synthesized from oligo(lactic acid) macromonomers have been studied for controlled drug delivery. This study compares the synthesis of PLA-based macromonomers via ring-opening polymerization (ROP) and direct polycondensation of lactic acid in the presence of 2-hydroxyethyl methacrylate (HEMA). It is found that polycondensation is a valuable alternative to ROP for macromonomers with an average chain length of up to 4, while ROP remains the main route for longer chains requiring strict control over the chain length distribution.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Rahul P. Gaikwad, Dhanaji R. Naikwadi, Ankush V. Biradar, Manoj B. Gawande
Summary: This study investigates the role of mesoporous graphitic carbon nitride (mpg-C3N4) photocatalyst in the esterification of substituted benzaldehyde under visible light irradiation at room temperature without any additives. The mpg-C3N4 material, characterized by various techniques, exhibits high surface area, porosity, medium band gap, and nanowire-like shape. These properties enhance the photocatalytic activity of mpg-C3N4 towards the esterification reaction.
ACS APPLIED NANO MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Mikolaj Krysa, Katarzyna Susniak, Adrianna Kubas, Dominika Kidaj, Anna Sroka-Bartnicka
Summary: Nod factors are important signaling molecules produced by rhizobia in response to flavonoids for root nodule formation in legumes. It is hypothesized that they could also enhance yield and positively affect the growth of non-legumes. To evaluate this, rapeseed treated with Nod factor-based biofertilizers were studied, and it was found that the biofertilizers increased the concentration of lignin, hemicellulose, pectin, and cellulose in the stems. Additionally, the concentration of certain quercetin and kaempferol derivatives increased, while the concentration of isorhamnetin dihexoside decreased. The increase in structural components and flavonoids in the stems may improve lodging resistance, fungal infection resistance, and resistance to herbivorous insects.
Article
Engineering, Environmental
Pawel Kowalik, Mikolaj Krysa, Katarzyna Antoniak-Jurak, Wieslaw Prochniak, Piotr Pieta, Wojciech Lisowski, Robert Nowakowski, Anna Sroka-Bartnicka, Izabela S. Pieta
Summary: This study focused on the effect of vanadium modification on nickel catalysts deposited on porous supports, investigating the relationship between catalyst structure and activity in the DME DR reaction. The results showed that vanadium modification significantly influenced the activity of the catalysts, with a clear relationship between catalyst structure, surface morphology, and activity. The study also found that the DME DR reaction over V-modified Ni-catalysts was highly structure-sensitive.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Michal Lesnak, Daniel Cvejn, Martin Petr, Pavlina Peikertova, Roman Gabor, Tibor Fordos, Pavel Czernek, Daniela Placha
Summary: A novel N-doped carbon material, named nano-mousse, was obtained by depositing medium-sized pyridine-based molecules on copper-based substrates. The resulting material is a system of interconnected multi-wall carbon nanospheres with substantial N-doping. The N-doped carbon nano-mousses exhibit metal-like properties in terms of optical conductivity and other optical properties, and their structure and chemical composition are highly dependent on the nature of the precursor and preparation conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Chemistry, Physical
Babak Jaleh, Atefeh Nasri, Mahtab Eslamipanah, Mahmoud Nasrollahzadeh, Jacky H. Advani, Paolo Fornasiero, Manoj B. Gawande
Summary: Industrialization has led to increased demand for clean energy storage and conversion systems to reduce the use of environmentally harmful substances. Nature-inspired materials, with their extended porous architectures, high surface areas, and low cost, show great potential as catalysts and nanofillers in energy storage and conversion. This review summarizes the structure and classification of natural materials suitable for energy devices, focusing on their applications and advancements in fuel cells.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Chemistry, Inorganic & Nuclear
Harsh R. Darji, Hanumant B. Kale, Farhan F. Shaikh, Manoj B. Gawande
Summary: This review focuses on the utilization of CO2 for methanol synthesis and various reactor systems. The technology discussed in this review is expected to support and advance research on selective methanol synthesis from CO2 as a fuel, providing sustainable solutions for climate change and rising energy demands.
COORDINATION CHEMISTRY REVIEWS
(2023)
Proceedings Paper
Engineering, Biomedical
Silvia Santoni, Mattia Sponchioni, Simone Giovanni Gugliandolo, Bianca Maria Colosimo, Davide Moscatelli
Summary: This study investigates the use of a thermoresponsive PEG-based bioink for 4D bioprinting applications. The bioink shows promise in providing reliable and reproducible structures with good mechanical properties and high biocompatibility.
V CIRP CONFERENCE ON BIOMANUFACTURING
(2022)
Article
Chemistry, Multidisciplinary
Flavio Tollini, Alice Occhetta, Francesca Broglia, Vincenzo Calemma, Stefano Carminati, Giuseppe Storti, Mattia Sponchioni, Davide Moscatelli
Summary: In this study, the conditions for the formation of harmful compounds during the use of GL and EPI in aqueous environments were identified and corresponding processes to prevent their formation were designed. Experimental results showed that temperature, pH, and chloride ion concentration were crucial factors for the formation of these compounds. The developed kinetic model provided a prediction of reaction rates and served as a basis for optimizing processes by considering the critical role of pH.
REACTION CHEMISTRY & ENGINEERING
(2022)
Review
Materials Science, Multidisciplinary
Priya Yadav, Manavi Yadav, Rashmi Gaur, Radhika Gupta, Gunjan Arora, Anju Srivastava, Anandarup Goswami, Manoj B. Gawande, Rakesh K. Sharma
Summary: Magnetic covalent organic frameworks (MagCOFs) are a new class of emerging material with potential in separation applications. This review highlights the advancements in MagCOFs synthesis and their potential in diverse separation applications, while also addressing the challenges in this exciting area of research.
MATERIALS ADVANCES
(2022)