Yong Ding

Last Name

Ding

First Name

Yong

ORCID

0000-0003-2781-5616

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Publications 1 - 10 of 14

Formation of Iron (Hydr)Oxide Nanoparticles with a pH-Clock
Kürsteiner, Ronny; Ding, Yong; Ritter, Maximilian; et al. (2022)
Nanomaterials
We demonstrate the autonomous synthesis of iron (hydr)oxide (green rust, magnetite, and lepidocrocite) nanoparticles by precipitating iron(II) ions using hydroxide ions generated in situ with the methylene glycol-sulfite (MGS) reaction, a pH-clock. We show that the nature of the products can be predetermined by tuning the initial iron(II) concentration.
Lignin-based porous carbon adsorbents for CO₂ capture
Barker-Rothschild, Daniel; Chen, Jingqian; Wan, Zhangmin; et al. (2025)
Chemical Society Reviews
A major driver of global climate change is the rising concentration of atmospheric CO₂, the mitigation of which requires the development of efficient and sustainable carbon capture technologies. Solid porous adsorbents have emerged as promising alternatives to liquid amine counterparts due to their potential to reduce regeneration costs. Among them, porous carbons stand out for their high surface area, tailorable pore structure, and exceptional thermal and mechanical properties, making them highly robust and efficient in cycling operations. Moreover, porous carbons can be synthesized from readily available organic (waste) streams, reducing costs and promoting circularity. Lignin, a renewable and abundant by-product of the forest products industry and emerging biorefineries, is a complex organic polymer with a high carbon content, making it a suitable precursor for carbon-based adsorbents. This review explores lignin's sources, structure, and thermal properties, as well as traditional and emerging methods for producing lignin-based porous adsorbents. We examine the physicochemical properties, CO₂ adsorption mechanisms, and performance of lignin-derived materials. Additionally, the review highlights recent advances in lignin valorization and provides critical insights into optimizing the design of lignin-based adsorbents to enhance CO₂ capture efficiency. Finally, it addresses the prospects and challenges in the field, emphasizing the significant role that lignin-derived materials could play in advancing sustainable carbon capture technologies and mitigating climate change.
Natural Wood-Based Catalytic Membrane Microreactors for Continuous Hydrogen Generation
Tu, Kunkun; Büchele, Simon; Mitchell, Sharon; et al. (2022)
ACS Applied Materials & Interfaces
The development of controlled processes for continuous hydrogen generation from solid-state storage chemicals such as ammonia borane is central to integrating renewable hydrogen into a clean energy mix. However, to date, most reported platforms operate in batch mode, posing a challenge for controllable hydrogen release, catalyst reusability, and large-scale operation. To address these issues, we developed flow-Through wood-based catalytic microreactors, characterized by inherent natural oriented microchannels. The prepared structured catalysts utilize silver-promoted palladium nanoparticles supported on metal-organic framework (MOF)-coated wood microreactors as the active phase. Catalytic tests demonstrate their highly controllable hydrogen production in continuous mode, and by adjusting the ammonia borane flow and wood species, we reach stable productivities of up to 10.4 cmH23 min-1 cmcat-3. The modular design of the structured catalysts proves readily scalable. Our versatile approach is applicable for other metals and MOF combinations, thus comprising a sustainable and scalable platform for catalytic dehydrogenations and applications in the energy-water nexus.
Passive climate regulation with transpiring wood for buildings with increased energy efficiency
Ding, Yong; Dreimol, Christopher; Zboray, Robert; et al. (2023)
Materials Horizons
Buildings are significant end-users of global energy. About 20% of the energy consumption worldwide is used for maintaining a comfortable indoor climate. Therefore, passive systems for indoor temperature and humidity regulation that can respond to environmental changes are very promising to reduce buildings' energy consumption. We developed a process to improve the responsiveness of wood to humidity changes by laser-drilling microscopic holes and incorporating a hygroscopic salt (calcium chloride). The resulting "transpiring wood" displays superior water adsorption capacity and high moisture exchange rate, allowing regulation of humidity and temperature by the exchange of moisture with the surrounding air. We proved that the hygrothermal performance of transpiring wood can be used to regulate indoor climate, with associated energy savings, for various climate types, thus favoring its application in the building sector. The reduction of temperature fluctuations, thanks to the buffering of temperature peaks, can lead to an indirect energy saving of about 10% for cooling and between 4-27% for heating depending on the climate. Furthermore, our transpiring wood meets different sustainability criteria, from raw materials to the fabrication process, resulting in a product with a low overall environmental impact and that is easy to recycle.
Dissolution of Zinc Oxide Nanoparticles in the Presence of Slow Acid Generators
Kürsteiner, Ronny; Ritter, Maximilian; Ding, Yong; et al. (2022)
Materials
We describe a preliminary investigation of the dissolution dynamics of zinc oxide nano-particles in the presence of cyclic esters (δ-gluconolactone and propanesultone) as slow acid gener-ators. The particles dissolution is monitored by means of turbidimetry and correlated with the evo-lution of pH over time. The results could be of interest for the design of chemically programmable colloidal systems.
Review on design strategies and applications of metal-organic framework-cellulose composites
Tu, Kunkun; Ding, Yong; Keplinger, Tobias (2022)
Carbohydrate Polymers
Metal-organic frameworks (MOFs) are among the most attractive functional porous materials. However, their processability and handling remains a substantial challenge because MOFs generally occur in powder form due to their crystalline nature. Combining MOFs and cellulose substrates to fabricate engineered materials offers an ideal solution to broaden their utilization as functional materials. MOF/cellulose composites further provide remarkable mechanical properties, tunable porosity, and accessible active sites of MOFs. In this review, we summarize current state-of-the-art fabrication routes for MOF/cellulose composites, with a specific focus on the unique potential of utilizing three-dimensional bio-based cellulosic scaffolds. We highlight their utilization as adsorbents in the gas and liquid phase, for antibacterial and protein immobilization, chemical sensors, electrical energy storage, and other emerging applications. In addition, we discuss current limitations and potential future research directions in the field of MOF/cellulose composites for advanced functional materials.
Laser-drilled functional wood materials show improved dimensional stability upon humidity changes - a neutron imaging analysis
Ding, Yong; Shakoorioskooie, Mahdieh; Mannes, David; et al. (2025)
Journal of Materials Chemistry A
Wood and wood-based composites are increasingly studied because of their potential to regulate indoor humidity through moisture exchange with the air. Understanding their dimensional stability under fluctuating moisture conditions is essential for uncovering the underlying mechanisms and their practical use. This study employed neutron imaging to elucidate the moisture dynamics within wood materials under varying relative humidity conditions. High-resolution and in situ golden ratio tomography provided insights into moisture distribution and dimensional changes within the wood. Affine and non-affine registration techniques identified both the global and local deformations, highlighting dimensional instability in native wood and its improvement through laser drilling. Structural modification by laser drilling processes is effective in improving the moisture transport speed in wood and limiting dimensional changes. Moreover, the laser-drilled wood provides a highly feasible scaffold for further chemical modifications. Coating the cell lumina surface of laser-drilled wood with MOFs results in remarkably high moisture sorption capacity and improved dimensional stability compared to native wood and laser-drilled wood. The MOF layer acts as a barrier during water adsorption and as a reservoir during desorption. This study presents a promising strategy for the development of high-performance wood materials that leverage wood's inherent benefits while overcoming some current limitations.
Sustainable wood electronics by iron-catalyzed laser-induced graphitization for large-scale applications
Dreimol, Christopher; Guo, Huizhang; Ritter, Maximilian; et al. (2022)
Nature Communications
Ecologically friendly wood electronics will help alleviating the shortcomings of state-of-art cellulose-based “green electronics”. Here we introduce iron-catalyzed laser-induced graphitization (IC-LIG) as an innovative approach for engraving large-scale electrically conductive structures on wood with very high quality and efficiency, overcoming the limitations of conventional LIG including high ablation, thermal damages, need for multiple lasing steps, use of fire retardants and inert atmospheres. An aqueous bio-based coating, inspired by historical iron-gall ink, protects wood from laser ablation and thermal damage while promoting efficient graphitization and smoothening substrate irregularities. Large-scale (100 cm2), highly conductive (≥2500 S m−1) and homogeneous surface areas are engraved single-step in ambient atmosphere with a conventional CO2 laser, even on very thin (∼450 µm) wood veneers. We demonstrate the validity of our approach by turning wood into highly durable strain sensors, flexible electrodes, capacitive touch panels and an electroluminescent LIG-based device.
Thermoresponsive Smart Gating Wood Membranes
Ding, Yong; Panzarasa, Guido; Stucki, Sandro; et al. (2022)
ACS Sustainable Chemistry & Engineering
Smart membranes that can open and/or close their pores in a controlled manner by external stimuli possess potential in various applications, such as water flow manipulation, indoor climate regulation, and sensing. The design of smart gating membranes with high flux, immediate response, and mechanical robustness is still an open challenge, limiting their versatility and practical applicability. Inspired by the controlled opening and closure of plant stomata, we have developed a smart gating wood membrane, taking advantage of the unique wood scaffold with its hierarchical porous structure to carry thermoresponsive hydrogel gates. Laser drilling was applied to cut channels in the wood scaffold with well-aligned pores to incorporate the smart gating membranes. In situ polymerization of poly(N-isopropylacrylamide) above its lower critical solution temperature inside the channels resulted in a hydrogel with a heterogeneous microstructure acting as a thermoresponsive gate. The wood-based smart gating membranes exhibited reversible and stable pore opening/closing under heating/cooling stimuli. The achieved rapid response and feasibility of scale-up open the venue for various practical applications. In this work, we demonstrated their potential for indoor light regulation and as a water flow manipulator.
Renewable wood-phase change material composites for passive temperature regulation of buildings
Leibnitz, Oskar; Dreimol, Christopher; Stucki, Sandro; et al. (2024)
Next Materials
The buildings sector consumes a significant amount of raw materials and energy resources, with high-energy consumption and environmental impact. To achieve net-zero emissions, it is crucial to address the substantial carbon footprint generated by buildings in operation. A promising solution lies in the development of renewable and sustainable building materials capable of efficiently storing thermal energy to regulate indoor temperature without relying on operational energy (HVAC systems). Here we report on a wood-phase change material (PCM) composite, referred to as PCM-wood, which holds potential for energy-efficient buildings. The composite shows excellent thermal regulation capability with a melting enthalpy of 113 J g−1 at 22 °C and solidification enthalpy of 114 J g−1 at 21 °C. Despite some loss of mass and in enthalpy of melting, the PCM-wood showcases stable thermal regulation performance over 50 heating/cooling cycles and the wood modification does not negatively impact the tensile strength of the wood material. Hence, the PCM-wood composite combines structural performance and efficient energy storage with the ability to passively regulate indoor temperature, buffering fluctuations of more than 6 °C. Such a passive thermal regulation strategy has the potential to significantly reduce energy consumption in the building sector and to help achieve net-zero buildings by reducing energy consumption and mitigating CO2 emissions.

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