Yinkui Yu, Ning Zhang, Dominic Hoffman, Dewansh Rastogi, Ian R Woodward, Catherine A Fromen
{"title":"Design and Evaluation of 3D-Printed Lattice Structures as High Flow Rate Aerosol Filters.","authors":"Yinkui Yu, Ning Zhang, Dominic Hoffman, Dewansh Rastogi, Ian R Woodward, Catherine A Fromen","doi":"10.1021/acsaenm.4c00562","DOIUrl":"10.1021/acsaenm.4c00562","url":null,"abstract":"<p><p>Aerosol contamination presents significant challenges across various industries, ranging from healthcare to manufacturing. Over the past few years, open foam filters have gained prominence for their ability to efficiently capture particles while allowing reasonable airflow. In this work, we present the use of 3D-printed idealized open foam-like lattice structures as aerosol filtration media, leveraging advances in additive manufacturing to generate these highly tunable and modular filters. Using parametric design approaches, we fabricated lattice filters with four different unit cell geometries (Cubic, Kelvin, Octahedron, and Weaire-Phelan) via Digital Light Synthesis 3D printing and characterized these structures with X-ray microcomputed tomography. We compared the aerosol filtration performance of the different lattice unit cell geometries using 1 μm polystyrene latex (PSL) aerosol particles, finding the filtration performance to be positively correlated with the single-unit-cell specific surface area. We then expanded our evaluation of deposition efficiency in Kelvin cell lattice structures of varied porosities, again finding a correlation between the specific surface area and deposition performance. Experimental analysis confirmed that deposition primarily occurs through impaction and electrostatic mechanisms within the parameter space. Overall, our findings demonstrate that unit-cell-based lattices can achieve a wide range of aerosol filtration efficiencies (∼10-100%) across various operating conditions (1-4 m/s superficial velocity), offering a highly tunable in-line filtration medium capable of maintaining high efficiency even at elevated airflow rates. This work not only provides essential guidelines for designing and manufacturing 3D-printed lattices as customizable aerosol filters but also highlights the current limitations and challenges in producing these structures.</p>","PeriodicalId":55639,"journal":{"name":"ACS Applied Engineering Materials","volume":"2 12","pages":"2875-2884"},"PeriodicalIF":0.0,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11686461/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142916331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
John Schossig, Qiangjun Hao, Tyler Davide, Adedayo Towolawi, Cheng Zhang, Ping Lu
{"title":"Breaking through Electrospinning Limitations: Liquid-Assisted Ultrahigh-Speed Production of Polyacrylonitrile Nanofibers.","authors":"John Schossig, Qiangjun Hao, Tyler Davide, Adedayo Towolawi, Cheng Zhang, Ping Lu","doi":"10.1021/acsaenm.4c00657","DOIUrl":"10.1021/acsaenm.4c00657","url":null,"abstract":"<p><p>Carbon-based nanofibers are critical materials with broad applications in industries such as energy, filtration, and biomedical devices. Polyacrylonitrile (PAN) is a primary precursor for carbon nanofibers, but conventional electrospinning techniques typically operate at low production rates of 0.1-1 mL/h from a single spinneret, limiting scalability. In this study, we introduce a novel liquid-assisted ultrahigh-speed electrospinning (LAUHS-ES) technique that achieved actual production rates over 220 times faster than conventional methods. This dramatic increase in throughput is achieved through Taylor cone stabilization using a thin layer of liquid sheath, allowing for ultrahigh-speed electrospinning without compromising the structural integrity or uniformity of the nanofibers. Comprehensive characterization, including scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD), confirmed the high quality, consistency, and crystallinity of the produced nanofibers. Our results demonstrate that PAN nanofiber fabrication can be scaled up significantly while maintaining precise control over fiber morphology and performance. This advancement holds substantial promise for large-scale industrial applications, enabling more efficient and cost-effective production of carbon-based nanofibers.</p>","PeriodicalId":55639,"journal":{"name":"ACS Applied Engineering Materials","volume":"2 12","pages":"2970-2983"},"PeriodicalIF":0.0,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11686468/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142916357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sambhaji S. Ghadge, Shubham R. Bankar and Vrushali H. Jadhav*,
{"title":"Selective Oxidation of Biomass derived 5-Hydroxymethylfurfural (HMF) to 2,5-Diformylfuran (DFF) over Spent Dry cell battery cathode material (BCM-2)","authors":"Sambhaji S. Ghadge, Shubham R. Bankar and Vrushali H. Jadhav*, ","doi":"10.1021/acsaenm.4c0053710.1021/acsaenm.4c00537","DOIUrl":"https://doi.org/10.1021/acsaenm.4c00537https://doi.org/10.1021/acsaenm.4c00537","url":null,"abstract":"<p >Widespread use of batteries across the globe generates a huge amount of waste. This work is the first to report spent dry cell (Zn-Carbon) battery cathode material (BCM-2) as a heterogeneous catalyst for selective synthesis of fine chemical 2,5-diformylfuran (DFF). Cathode material was easily separated from spent batteries, and acid leached followed by calcination to obtain black powder that was denoted as BCM-2. The catalyst was characterized using various techniques such as P-XRD, EDAX, SEM, HR-TEM, TGA, XPS, and BET analysis. Superior catalytic activity was shown by the catalyst for selective formation of DFF using molecular O<sub>2</sub> as a sole oxidant. The catalyst was found to give excellent HMF conversion of 97% with 98% high selectivity of DFF. The BCM-2 catalyst was easily recycled and reused without any significant loss in its catalytic activity. This is one of the best examples for a sustainable, cost-effective, and highly efficient catalytic system for the synthesis of the value-added chemical DFF.</p>","PeriodicalId":55639,"journal":{"name":"ACS Applied Engineering Materials","volume":"2 11","pages":"2651–2659 2651–2659"},"PeriodicalIF":0.0,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142685228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jingpi Gao, Ming Liu, Li Wu, Zhiyuan Tian*, Jian-Hong Tang* and Yujie Sun*,
{"title":"Activatable Two-Photon-Excited Molecular Fluorescent Probes for Near-Infrared Biosensing and Bioimaging","authors":"Jingpi Gao, Ming Liu, Li Wu, Zhiyuan Tian*, Jian-Hong Tang* and Yujie Sun*, ","doi":"10.1021/acsaenm.4c0059810.1021/acsaenm.4c00598","DOIUrl":"https://doi.org/10.1021/acsaenm.4c00598https://doi.org/10.1021/acsaenm.4c00598","url":null,"abstract":"<p >Two-photon-excited fluorescence imaging (TPEFI) is a rapidly advancing technique for detecting analytes and visualizing biological conditions in real time. Compared to conventional one-photon excitation, TPEFI offers advantages, such as deeper tissue penetration, reduced photodamage, high sensitivity, and superior temporal resolution, making it highly suitable for <i>in vivo</i> imaging applications. The integration of biostimuli-responsive elements into two-photon fluorophores has enabled the development of bioactivatable two-photon-excited small molecules that are effective in near-infrared bioimaging for monitoring diverse biological processes and diseases. This review highlights recent progress (2019–2024) in the design and application of two-photon-excited near-infrared fluorescent probes specifically developed for activity-based bioimaging. We provide a succinct overview of both chemically and enzymatically activated probes by discussing their structural design principles, bioresponsive characteristics, two-photon absorption and emission properties, and their use <i>in vitro</i> and <i>in vivo</i> for monitoring specific biomedical conditions and diseases.</p>","PeriodicalId":55639,"journal":{"name":"ACS Applied Engineering Materials","volume":"2 11","pages":"2504–2520 2504–2520"},"PeriodicalIF":0.0,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142691199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hiral Ukani, Nildhara Parsana, Sanjay Mehra, Arvind Kumar, Imran Khan, Mohammed A. Assiri and Naved Malek*,
{"title":"Metal–Organic Framework and Biopolymer-Based Composite Hydrogel for Enhanced Encapsulation of Anticancer Drugs: A New Age Transdermal Drug Delivery Vehicle","authors":"Hiral Ukani, Nildhara Parsana, Sanjay Mehra, Arvind Kumar, Imran Khan, Mohammed A. Assiri and Naved Malek*, ","doi":"10.1021/acsaenm.4c0050810.1021/acsaenm.4c00508","DOIUrl":"https://doi.org/10.1021/acsaenm.4c00508https://doi.org/10.1021/acsaenm.4c00508","url":null,"abstract":"<p >The transdermal drug delivery system (TDDS) is a promising and innovative approach to drug delivery because of its noninvasiveness, potential for localized and prolonged drug delivery, and ability to minimize systemic side effects by avoiding first-pass metabolism. Utilizing the distinctive characteristics of hydrogels, such as their biocompatibility, versatility in administration, and higher drug loading capabilities, herein, we develop a biocompatible hydrogel through synergistically interacting the biopolymer k-carrageenan (k-CG) and metal–organic framework (MOF) (zeolitic imidazolate framework (ZIF-8)) that can work as a TDDS. The resultant hydrogel showcased remarkable properties necessary for being the TDDS, including superior mechanical strength, self-healing capabilities, adhesiveness, and spreadability. Notably, this hydrogel exhibits a substantial drug loading capacity, specifically 64.16 mg/g of the anticancer drug 5-fluorouracil (5-FU), with sustained release behavior of 71.8% within 72 h. The hydrogel demonstrated remarkable viability (∼95%) in MTT assays against HaCaT cells, indicating its excellent biocompatibility. The drug-loaded hydrogel effectively targeted TDDS, evidenced by <i>in vitro</i> cytotoxicity studies on MCF-7 breast cancer cells. Additionally, the hydrogel exhibited efficient curcumin (Cur) loading at 18 mg/g without affecting its stability, showcasing notable antibacterial and antioxidant properties. These findings suggest the potential of the investigated system for cancer therapy and wound healing applications.</p>","PeriodicalId":55639,"journal":{"name":"ACS Applied Engineering Materials","volume":"2 11","pages":"2583–2596 2583–2596"},"PeriodicalIF":0.0,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142691553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Melina Schadt, Niklas Herrmann, Claudia Formen, Christian Simons, Elisabeth Heine, Felix Jakob, Ulrich Schwaneberg* and Andreas Herrmann*,
{"title":"Recombinant Supercharged Polypeptide Fusions for the Hydrophilic Finishing of PET Textiles","authors":"Melina Schadt, Niklas Herrmann, Claudia Formen, Christian Simons, Elisabeth Heine, Felix Jakob, Ulrich Schwaneberg* and Andreas Herrmann*, ","doi":"10.1021/acsaenm.4c0048910.1021/acsaenm.4c00489","DOIUrl":"https://doi.org/10.1021/acsaenm.4c00489https://doi.org/10.1021/acsaenm.4c00489","url":null,"abstract":"<p >Textile processing has had a negative impact on the environment in past decades, e.g., due to the usage of toxic chemicals and high amounts of contaminated wastewater. Therefore, the demand for bio-based and eco-friendly textile processing has strongly increased in the past few years. Polyethylene terephthalate (PET) is the most commonly used polymer in the clothing and technical textile sectors due to its excellent chemical and physical properties (e.g., low weight while being mechanically durable). However, its intrinsic hydrophobicity requires harsh pretreatment and processing before being fully usable as a product in the field of clothing and sportswear. To overcome these issues, we present a protein-based finish that improves the hydrophilicity of PET fabrics, thus improving the comfortability and suitability of PET fibers in sportswear. Fusion proteins consisting of a material binding anchor peptide (AP) and a functional moiety consisting of supercharged unfolded polypeptides (SUPs) were genetically engineered. The protein was produced in an easy, one-step, and scalable recombinant expression. Functionalization of PET with the AP-SUP fusion protein was achieved through dip coating in aqueous solution at room temperature, offering an energy efficient and resource saving textile finishing process that is compatible with existing machinery in the textile finishing industry. We successfully demonstrated that our ultrathin AP-SUP finish hydrophilized the textile surface, improved moisture management, and remained on the PET surface after washing.</p>","PeriodicalId":55639,"journal":{"name":"ACS Applied Engineering Materials","volume":"2 11","pages":"2559–2568 2559–2568"},"PeriodicalIF":0.0,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142691554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Suji Kim, Jiyoon Park, Yong Hui Pi, Jun Su Park, Yern Seung Kim, Kai Wu, Guihua Yu* and Joohyung Lee*,
{"title":"Facile Low-Oxidation Emulsification of Liquid Metal Using Polyvinylpyrrolidone for Highly Viscoelastic Heat Conductive Pastes","authors":"Suji Kim, Jiyoon Park, Yong Hui Pi, Jun Su Park, Yern Seung Kim, Kai Wu, Guihua Yu* and Joohyung Lee*, ","doi":"10.1021/acsaenm.4c0063710.1021/acsaenm.4c00637","DOIUrl":"https://doi.org/10.1021/acsaenm.4c00637https://doi.org/10.1021/acsaenm.4c00637","url":null,"abstract":"<p >Low-melting-point metals, known as liquid metals (LMs), have recently attracted significant interest owing to their high conductivity and fluidity. “Emulsification” of LMs into colloidal microdroplets in immiscible carrier fluids confers a variety of unique opportunities in terms of their processability as well as functionality; however, achieving emulsification at high LM loads while significantly modifying the rheology of the resulting emulsions presents a considerable challenge. Furthermore, the formation of a surface oxide skin on emulsified LM droplets complicates their interfacial dynamics and often deteriorates the performance of the resulting emulsions. In this study, we demonstrate that polyvinylpyrrolidone (PVP), which can coordinate-bond with LM, markedly increases the emulsification efficiency of LM in ethanol (EtOH), thereby enabling the formation of highly viscoelastic LM-in-EtOH emulsion pastes via simple shear mixing using a mortar and pestle. The growth of the oxide layer is controlled by the surface-adsorbed PVPs, which form an interdroplet percolation network. The resulting PVP-mediated “structured” emulsions exhibit significantly higher thermal conductivities than their additive-free counterparts under a given LM load, owing to the formation of an effective thermal transport network of interconnected conductive LM droplets with controlled growth of insulating oxide skin. Industry-relevant blade coating using these LM-in-EtOH emulsions is demonstrated, during which LM droplets coated on nonstretchable substrates readily develop anisotropy under applied shear, which may be potentially useful for directed thermal transport in relevant applications. Lastly, the performance of the LM droplets coated with PVP as thermal interface materials is evaluated.</p>","PeriodicalId":55639,"journal":{"name":"ACS Applied Engineering Materials","volume":"2 11","pages":"2705–2718 2705–2718"},"PeriodicalIF":0.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142691436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Nanoengineered Wool Textiles with Wrinkled Patterns for Enhanced Directional Radiative Cooling and Sun-Shade Effects","authors":"Shuyu Ao, Benhui Li, Xiaorui Hu, Xuzhong Su* and Fengxin Sun*, ","doi":"10.1021/acsaenm.4c0058910.1021/acsaenm.4c00589","DOIUrl":"https://doi.org/10.1021/acsaenm.4c00589https://doi.org/10.1021/acsaenm.4c00589","url":null,"abstract":"<p >Applying zero-energy-input passive radiative cooling technology to personal thermal management systems can promote sustainable development and decrease energy consumption. However, the nearly horizontal internal radiation between cooling textiles and their surroundings hinders the transmission of thermal radiation into outer space, thereby diminishing the effectiveness of radiative cooling, because most of the wearable fabric on the human body is oriented vertically. Herein, we develop a nanoprocessed wool fabric with wrinkled patterns using a molecular bonding design strategy and scalable dip-coating methods to enhance solar spectrum reflection, followed by a thermal setting to form louver-like wrinkles. The wrinkled structures form a reflective surface oriented toward the direction of sunlight, which not only effectively reflects solar radiation directionally into outer space but also creates shaded areas to reduce the solar fluxes reaching the wearable fabric by around 50%. Nanoprocessed wrinkled wool fabric reflects over 90% of solar irradiance and selectively transmits human thermal radiation, allowing simulated skin to remain up to 10 °C cooler under direct sunlight and 2 °C cooler indoors compared to cotton fabrics. Moreover, the wool fabric retains its inherent breathability and comfort and excellent wear resistance. This efficient and scalable fabric design paves the way for sustainable energy solutions, smart textiles, and passive radiative cooling applications through the use of natural materials and geometrical structure engineering.</p>","PeriodicalId":55639,"journal":{"name":"ACS Applied Engineering Materials","volume":"2 11","pages":"2689–2697 2689–2697"},"PeriodicalIF":0.0,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142691302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shawn Siu Lun Loo, Khai Yang Tan, N. Idayu Zahid, Chuan Yi Foo, Yi Xiang Neoh, Kai Yang Chong, Swee Tiam Tan* and Yvonne Shuen Lann Choo*,
{"title":"Integrating Photothermal-Responsive Shape Memory and Self-Healing Polymers in 4D-Printed Thermally Comfortable Smart Wearables","authors":"Shawn Siu Lun Loo, Khai Yang Tan, N. Idayu Zahid, Chuan Yi Foo, Yi Xiang Neoh, Kai Yang Chong, Swee Tiam Tan* and Yvonne Shuen Lann Choo*, ","doi":"10.1021/acsaenm.4c0049510.1021/acsaenm.4c00495","DOIUrl":"https://doi.org/10.1021/acsaenm.4c00495https://doi.org/10.1021/acsaenm.4c00495","url":null,"abstract":"<p >Inspired by nature, photothermal-responsive shape memory and self-healing polymers demonstrate capabilities in self-sustainable and multifunctional actuation, which is highly promising for future smart wearables. However, their advancement in smart wearables is impeded by excessive surface heat generated from photothermal fillers, resulting in significant thermal discomfort for users. Herein, a high-performance photothermal-responsive shape memory and self-healing polymer is derived from a series of poly(urethane methacrylate)s (PUMAs) by meticulously modulating their microstructure and properties through the isocyanate-to-hydroxyl ratio and reactive diluent content. Its intrinsic photothermal properties, excellent shape recovery (ca. 98.7%), and high self-healing efficiency (ca. 93.4%) enable synergistic coupling effect of autonomous deformation recovery and crack healing. More importantly, its actuation temperature (ca. 35.2 °C) is much lower than the thermal discomfort threshold temperature range of the human body (ca. 43–48 °C), thereby enabling sunlight-induced shape memory and self-healing actuation at thermal comfort temperatures. In addition, end-functionalization of methacrylate moieties grants photocurability for integration in vat photopolymerization-based printing of smart wearables. The contribution of this work is centered on the low surface temperature achieved through photothermal effect (ca. 37.5 °C), which is adequate to trigger shape memory effect and self-healing while remaining within the thermal discomfort threshold temperature of the human body, offering an advantage over comparable materials. A four-dimensional (4D)-printed sneaker is created to demonstrate its shape memory and self-healing abilities under simulated and natural sunlight while simultaneously achieving thermal comfort. This work establishes a cornerstone for developing next-generation multifunctional smart wearables with end-user personalization and superior comfort of wear.</p>","PeriodicalId":55639,"journal":{"name":"ACS Applied Engineering Materials","volume":"2 11","pages":"2569–2582 2569–2582"},"PeriodicalIF":0.0,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142691429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Guillaume Esser, Robin Crits, Gabriella Barozzino-Consiglio, Ayoub Daouli, Guillaume Maurin, Yaroslav Filinchuk*, Sophie Hermans* and Timothy Steenhaut*,
{"title":"Appending Polyamines on Metal–Organic Frameworks as an Efficient Strategy for Selective Removal of H2S under Humid Conditions","authors":"Guillaume Esser, Robin Crits, Gabriella Barozzino-Consiglio, Ayoub Daouli, Guillaume Maurin, Yaroslav Filinchuk*, Sophie Hermans* and Timothy Steenhaut*, ","doi":"10.1021/acsaenm.4c0053510.1021/acsaenm.4c00535","DOIUrl":"https://doi.org/10.1021/acsaenm.4c00535https://doi.org/10.1021/acsaenm.4c00535","url":null,"abstract":"<p >Removal of highly toxic and corrosive hydrogen sulfide from gas flows is of paramount importance for controlling the environment and in several industrial processes. This contribution reports a straightforward strategy to engineer sorbents for efficient hydrogen sulfide removal under humid conditions by functionalizing the open metal sites of metal–organic frameworks (MOFs) with polyamines. MIL-101(Cr) MOFs were successfully modified with ethylenediamine and tris(2-aminoethyl)amine, and the resulting materials were characterized using X-ray diffraction, FTIR, NMR, nitrogen sorption, and thermogravimetric analysis (TGA), confirming the functionalization. Although the functionalized MOFs exhibited a greater affinity for water compared to the unmodified MIL-101(Cr), they efficiently removed H<sub>2</sub>S under humid conditions without framework degradation, whereas the pristine material did not. This was demonstrated by TGA-MS and elemental analysis and confirmed by density functional theory calculations. The developed approach offers a promising pathway for the design of advanced sorbents tailored for H<sub>2</sub>S removal in industrial and environmental applications.</p>","PeriodicalId":55639,"journal":{"name":"ACS Applied Engineering Materials","volume":"2 11","pages":"2619–2625 2619–2625"},"PeriodicalIF":0.0,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142691527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}