N-Doped Carbon Nitride with Embedded Pd Nanoparticles for Selective Photocatalytic Valorisation of Biomass-Derived Vanillin into Vanillyl Alcohol and 2-Methoxy-4-Methyl Phenol DOI

Himanshu Dhiman,

Rajat Ghalta, Rajaram Bal

и другие.

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(21), С. 24819 - 24832

Опубликована: Окт. 28, 2024

Efficient conversion of abundant biomass into high-value chemicals is crucial for sustainable chemical production. Herein, we report the design and synthesis a Pd nanoparticles (NPs)-embedded N-doped carbon nitride (Pd@NCN) nanocomposite photocatalytic transformation biomass-derived compounds. N-doping using DMF significantly enhanced visible light absorption, as evidenced by DRUV spectroscopy, making it suitable photocatalyst blue LED-driven reactions. Subsequent decoration with NPs remarkably improved catalyst's performance. UPS measurements revealed that NPs, their lower Fermi level higher work function compared to photoactive support, act efficient electron acceptors, promoting charge separation improving catalytic activity. This was corroborated PL, TCSPC, EIS studies. Photogenerated electrons on surface-activated hydrogen, enabling hydrogenation derivatives at room temperature. Concurrently, photogenerated holes were consumed IPA via O–H C–H, leading acetone formation. The optimized 1% [email protected] catalyst exhibited exceptional activity in vanillin (VAN), achieving 79.6% 94.4% selectivity vanillyl alcohol (VOL) within an hour. Moreover, reaction could be tuned adjusting loading time, complete VAN excellent (∼99%) 2-methoxy-4-methylphenol (MMP) 2% 4.5 h. Comprehensive characterization mechanistic studies provided insights structure–activity relationship, paving way development advanced NPs-based photocatalysts challenging valorization ambient conditions.

Язык: Английский

Lignin derivatives-based hydrogels for biomedical applications DOI

Elham Khadem,

Mohsen Ghafarzadeh,

Mahshid Kharaziha

и другие.

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 261, С. 129877 - 129877

Опубликована: Фев. 1, 2024

Язык: Английский

Процитировано

20
Impacts of partial removal of lignin on development of pore structures in activation of Chinese parasol DOI
Baihong Li, Chao Li,

Dianqiang Li

и другие.

Fuel, Год журнала: 2024, Номер 363, С. 131017 - 131017

Опубликована: Янв. 25, 2024

Язык: Английский

Процитировано

11
Fine root decomposition in forest ecosystems: an ecological perspective DOI Creative Commons
Sudipta Saha, Lei Huang, Muneer Ahmed Khoso

и другие.

Frontiers in Plant Science, Год журнала: 2023, Номер 14

Опубликована: Окт. 27, 2023

Fine root decomposition is a physio-biochemical activity that critical to the global carbon cycle (C) in forest ecosystems. It crucial investigate mechanisms and factors control fine ecosystems understand their system-level balance. This process can be influenced by several abiotic (e.g., mean annual temperature, precipitation, site elevation, stand age, salinity, soil pH) biotic microorganism, substrate quality) variables. Comparing rates within sites reveals positive impacts of nitrogen phosphorus concentrations negative effects lignin concentration. Nevertheless, estimating actual breakdown difficult due inadequate methods, anthropogenic activities, impact climate change. Herein, we propose how physiochemical characteristics interact with microorganisms influence decomposition. review summarized elements this process, as well research methods used it. There also need study seasonal changes affecting cumulative evidence will provide information on temporal spatial dynamics ecosystems, determine logging reforestation affect

Язык: Английский

Процитировано

21
Bio�Cbased polymers from lignin DOI
Bowen Zhang,

Guorui Qiang,

Katalin Barta

и другие.

The Innovation Materials, Год журнала: 2024, Номер 2(2), С. 100062 - 100062

Опубликована: Янв. 1, 2024

<p>Lignin, the most abundant natural aromatic compound on earth, offers valuable resources for development of bio–based polymers. In recent years, a plethora diverse polymer materials has been reported using either separated lignin or lignin–derived monomers. this review, we present comprehensive summary achievements and compare these two well–known strategies. While utilizing directly as starting advantages in terms cost–effectiveness wider options, employing monomers suffer from higher costs limited structural variety. However, well–defined structure lignin-derived monomers, retention functional group characteristics make promising strategy future applications. Through review paper, aim to inspire more researchers material science focus lignin—an intriguing emerging carbon-neutral biomaterial.</p>

Язык: Английский

Процитировано

7
Guided bone regeneration in long-bone defect with a bilayer mineralized collagen membrane DOI Creative Commons

Fuli Peng,

Xuelei Zhang, Yilei Wang

и другие.

Deleted Journal, Год журнала: 2023, Номер 5(1)

Опубликована: Дек. 1, 2023

Abstract Bone regeneration for large, critical-sized bone defects remains a clinical challenge nowadays. Guided (GBR) is promising technique the repair of multiple defects, which widely used in oral and maxillofacial but still unsatisfied treatment long defects. Here, we successfully fabricated bilayer mineralized collagen/collagen (MC/Col)-GBR membrane with excellent osteoinductive barrier function by coating MC particles prepared via situ biomimetic mineralization process on one side sheet-like pure collagen layer. The aim present study was to investigate physicochemical properties biological functions MC/Col film, further evaluate its efficiency large defect repair. Fourier-transform infrared spectra X-ray diffraction patterns confirmed presence both hydroxyapatite phase as well chemical interaction between them. stereo microscope, scanning electron microscopy atomic force microscope showed uniform distribution resulting rougher surface compared Col film. quantitative analysis contact angle, light transmittance tensile strength demonstrated that film have better hydrophilicity, mechanical properties, light-barrier respectively. In vitro macrophage co-culture experiments can effectively inhibit proliferation fusion, reducing fibrous capsule formation. vivo assessment rabbit critical segmental radial proved performed than other groups promoting due their unique dual osteoinductive/barrier function. These findings provided evidence has great potential effective Graphic abstract

Язык: Английский

Процитировано

13
Recent strides toward transforming lignin into plastics and aqueous electrolytes for flow batteries DOI Creative Commons
Omar Y. Abdelaziz, Mariona Battestini Vives, Smita V. Mankar

и другие.

iScience, Год журнала: 2024, Номер 27(4), С. 109418 - 109418

Опубликована: Март 4, 2024

Lignin is an abundant polyaromatic polymer with a wide range of potential future uses. However, the conversion lignin into valuable products comes at cost, and medium- to high-value applications are thus appropriate. Two examples these polymers (e.g., as fibers, plasticizers, or additives) flow batteries redox species). Both areas would benefit from lignin-derived molecules potentially low molecular weight high (electro)chemical functionality. A promising route obtain oxidative depolymerization, it enables formation targeted compounds multiple functionalities. An application in production plastics synthesis new sustainable polymers. Employing organic molecules, such quinones heterocycles, constitute important step toward sustainability aqueous batteries, its derivatives emerging species, mainly due their cost renewability.

Язык: Английский

Процитировано

4
Bio-based aromatics for chemicals and materials: Advances in renewable drop-in and functional alternatives DOI Creative Commons
Sandra Wegelin, Michaël A. R. Meier

Current Opinion in Green and Sustainable Chemistry, Год журнала: 2024, Номер 47, С. 100931 - 100931

Опубликована: Апрель 30, 2024

Benzene, toluene, and xylenes (BTX), as well their downstream products, are a fundamental part of numerous processes in the chemical industry. However, by now, aromatics still yielded from fossil resources like naphtha, coal, natural gas. Thus, to push industry further toward renewability, production bio-based is an essential step take. The implementation replace petrochemical can proceed two main ways: direct replacement via renewable drop-in or functional alternatives. both pathways requires significant process optimization large-scale application industrial processes. In this work, mainly discussed context pyrolysis Diels-Alder reactions. Furthermore, alternatives here focus on furan derivatives lignin-based building blocks.

Язык: Английский

Процитировано

4
Catalytic hydroconversion of lignin-based aromatics to aviation fuels—a review DOI
Sreedhar Gundekari,

Ambika Manupathi,

Sampoorna Chandu

и другие.

Biomass Conversion and Biorefinery, Год журнала: 2024, Номер 15(5), С. 6557 - 6583

Опубликована: Июль 22, 2024

Язык: Английский

Процитировано

4
A Comprehensive Mini-Review on Lignin-Based Nanomaterials for Food Applications: Systemic Advancement and Future Trends DOI Creative Commons
Ramachandran Chelliah, Shuai Wei, S. Vijayalakshmi

и другие.

Molecules, Год журнала: 2023, Номер 28(18), С. 6470 - 6470

Опубликована: Сен. 6, 2023

The shift to an environmentally friendly material economy requires renewable resource exploration. This may depend on lignin valorization. Lignin is aromatic polymer that makes up one-third of total lingo-cellulosic biomass and separated into large amounts for biofuel paper manufacture. readily available at a very low cost as nearly all the produced each year (90–100 million tons) simply burned low-value fuel. offers potential qualities many applications, yet it underutilized. Perspective highlights lignin-based prospects problems in food packaging, antimicrobial, agricultural applications. first half will discuss present future studies exploiting addition improve packaging’s mechanical, gas, UV, bioactive molecules, polyphenols, antioxidant qualities. Second, lignin’s antibacterial activity against bacteria, fungi, viruses be discussed. In conclusion, agriculture discussed industries.

Язык: Английский

Процитировано

9
Recent advances in the electrocatalytic oxidative upgrading of lignocellulosic biomass DOI Creative Commons
Yufeng Qi, Hairui Guo, Junting Li

и другие.

ChemPhysMater, Год журнала: 2024, Номер 3(2), С. 157 - 186

Опубликована: Март 11, 2024

Lignocellulosic biomass is a critical renewable carbon resource, but most of its utilization inefficient, and electrocatalytic oxidation promising method upgrading lignocellulose into value-added fuels chemicals under mild operating conditions. Recently, efforts to enable conversion with high efficiency low energy consumption have been reported, understanding the reaction mechanisms realizing scaled-up applications electrooxidation lignocellulosic are still in their early stages. A timely overview recently reported general mechanisms, particularly strategies developed for use improving efficiencies, necessary inspire research regarding highly efficient lignocellulose. Herein, we summarize improve performance oxidative conversion. The organized summary includes ranging from designing electrocatalysts adding functional co-catalysts or electrolytes employing advanced electrolyzers. comprehensive representative examples should provide universal principles yield insight processes guide design systems. Finally, challenges opportunities developing near future proposed.

Язык: Английский

Процитировано

3