Article
Multidisciplinary Sciences
Xiaoming Xu, Wenjing Wang, Yuanming Zhang, Yong Chen, Huiting Huang, Tao Fang, Yang Li, Zhaosheng Li, Zhigang Zou
Summary: This study successfully synthesized high-quality epitaxial perovskite SrTaO2N single crystals on the centimeter scale and demonstrated their excellent performance in photoelectrochemical water oxidation, with low onset potential and high photocurrent filling factor.
Article
Materials Science, Multidisciplinary
R. Radha, Joyal Johny, Krateeka Madan, G. Ranga Rao
Summary: A facile solid-gas interface method for anionic substitution of nitrogen in CeO2 lattice is reported. In this study, a low temperature ammonolysis method is developed as an alternate to high temperature ammonolysis of CeO2. The proposed method of ammonolysis of salt precursors is an excellent method for the synthesis of oxy-nitrides at low temperatures without residual carbon impurities for higher photocatalytic efficiencies.
Article
Multidisciplinary Sciences
Jun Zhang, Wenxiang Wang, Yan Zhang, Qiang Wei, Fei Han, Shengyi Dong, Dongqing Liu, Shiguo Zhang
Summary: Low-molecular-weight adhesives possess unique features compared to polymer adhesives. This study demonstrates an ionic liquid-based adhesive with high adhesion strength by introducing an IL moiety into a Y-shaped molecule replete with hydrogen bonding interactions.
NATURE COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Bheem Singh, Sudhanshu Gautam, Vishnu Aggarwal, Govinda Chandra Behera, Nasima Khatun, Rahul Kumar, Jai Shankar Tawale, Ramakrishnan Ganesan, Somnath Chanda Roy, Vidya Nand Singh, Sunil Singh Kushvaha
Summary: Nanostructured heterojunctions are effective for enhancing the photoelectrochemical performance of semiconducting materials. In this study, the PEC properties of a Bi2Se3/Sb2Se3 heterojunction on a thin metal foil were investigated, and it was found that the heterojunction exhibited higher photocurrent density compared to bare Bi2Se3 and Sb2Se3 thin films.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mabrook S. Amer, Prabhakarn Arunachalam, Mohamed A. Ghanem, Abdullah M. Al-Mayouf, Mark T. Weller
Summary: Photoelectrochemical (PEC) solar water splitting using semiconductor electrodes is a promising method for converting solar energy into hydrogen fuel. In this study, strontium titanium oxynitride (STON) with anion vacancies was prepared via solid phase synthesis and used as a photoelectrode for alkaline water oxidation. The PEC efficiency was improved by depositing a cobalt-phosphate (CoPi)-based co-catalyst on the surface of the STON electrode. The enhanced oxygen evolution kinetics and reduced surface recombination of photogenerated carriers contribute to the observed PEC enrichment. Additionally, the CoPi modification of perovskite-type oxynitrides presents a new avenue for developing efficient and stable photoanodes in solar-assisted water-splitting reactions.
Article
Chemistry, Multidisciplinary
Weisu Kong, Da Zhu, Yong Zhang, Rengan Luo, Jing Ma, Jianping Lei, Huangxian Ju
Summary: To improve the photoelectrochemical performance, an additional electron donor/acceptor is typically needed to suppress electron-hole recombination. However, the enhancement is limited due to long-distance diffusion. In this study, a self-supplying electron strategy is designed by coordinating an electron donor 1.4-diazabicyclo[2.2.2]octane (Dabco) in a metal-organic framework (MOF) to enhance PEC performance. The presence of Dabco effectively inhibits electron-hole recombination and leads to a 23.2-fold enhancement in photocurrent. This work provides a new approach for improving the PEC performance of nanomaterials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Thanh Tam Thi Tran, Sohyeon Kim, Jeongsuk Seo
Summary: This study demonstrates the size dependence of perovskite-type BaNbO2N particles on the photoelectrochemical (PEC) water splitting activity. The size of Ba5Nb4O15 particles, which are precursor oxides for BaNbO2N synthesis, was dependent on the calcination temperature. The reduction in size of oxynitride particles greatly improved the PEC water splitting activity.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Mahwash Mahar Gul, Khuram Shahzad Ahmad, Andrew Guy Thomas, Laila Almanqur, Yasser T. Alharbi, Suliman A. Alderhami
Summary: A transparent conducting rare earth metal electrode was fabricated for photoelectrochemical cells using the spin coating technique. The electrode showed significantly higher photocurrent densities compared to the absence of light, indicating its effectiveness and efficiency.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Multidisciplinary
Do Hyung Kang, Kwang Hyun Cho, Jinwoo Kim, Han Jun Eun, Young Min Rhee, Sang Kyu Kim
Summary: The nature of electron-binding forces in dipole-bound states of anions was examined through experimental and theoretical investigations. It was found that the conventional charge-dipole electrostatic potential alone could not rationalize the observed autodetachment dynamics. Nonclassical electron correlation and interaction among electrons played a significant role in the binding of excess electrons to the neutral core.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Mariam Barawi, Miguel Gomez-Mendoza, Freddy E. Oropeza, Giulio Gorni, Ignacio J. Villar-Garcia, Sixto Gimenez, Victor A. . de la Pena O'shea, Miguel Garcia-Tecedor
Summary: This study proposes a laser irradiation method to superficially degrade BiVO4 photoelectrodes and enhance their water oxidation reaction performance. Through a combination of advanced characterization techniques, it was found that the reduction process is localized at the surface of the sample, resulting in effective n-type doping and a shift to more favorable energy band positions for water oxidation. Additionally, changes in sample morphology and improved charge extraction contribute to an increase in photocurrent density.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Regan G. Wilks, Axel Erbing, Golnaz Sadoughi, David E. Starr, Evelyn Handick, Frank Meyer, Andreas Benkert, Marcella Iannuzzi, Dirk Hauschild, Wanli Yang, Monika Blum, Lothar Weinhardt, Clemens Heske, Henry J. Snaith, Michael Odelius, Marcus Baer
Summary: The organic component of CH3NH3PbI3-xClx perovskites exhibits electronic hybridization with the inorganic framework via H-bonding between N and I sites. Femtosecond dynamics induced by core excitation strongly affect the measured X-ray emission spectra and resonant inelastic soft X-ray scattering of the organic components. Excited-state dynamics must be considered in spectroscopic studies of this perovskite solar cell material, indicating new avenues for probing its electronic structure.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Chodipilli Ramesh, Prashant Tyagi, Vishnu Aggarwal, Samanta Pal, Swati Dhua, Manjari Singh, Prabir Pal, Somnath C. Roy, Surinder P. Singh, Senthil Kumar Muthusamy, Sunil Singh Kushvaha
Summary: We studied the photoelectrochemical properties of reduced graphene oxide-coated GaN nanocolumns on flexible niobium foils. The graphene-coated GaN nanocolumns formed a hybrid structure and showed improved charge separation and transport, leading to enhanced photocurrent density compared to pure GaN nanocolumns. The hybrid nitride nanostructure-based PEC device on flexible metal foils demonstrated fast and stable photoresponse in aqueous solution, suggesting its potential for scalable hydrogen production.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
A. R. Zanatta, F. Cemin, F. G. Echeverrigaray, F. Alvarez
Summary: This paper investigates the physico-chemical properties of titanium oxynitride films using Raman scattering and X-ray photoelectron spectroscopy, showing that these techniques can effectively characterize the structure and oxidation state of the films. The experimental data indicate a proportional relationship between the TiO2 and TiN-related phonon modes and the oxygen and nitrogen contents of the films, as well as a variation in the chemical oxidation states.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Physics, Applied
V Werner, J. Schoiber, G. J. Redhammer, T. Berger, S. Pokrant
Summary: Photoelectrochemical water-splitting with Ti-site substitution in LaTi(O,N)(3) leads to improved photocurrent density, linked to reduced (crystalline) defects at low substitution levels. However, excessive Nb doping may decrease charge carrier density, underscoring the importance of carefully tuning synthesis conditions for optimal performance.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Thorsten Cottre, Mathias Fingerle, Melanie Kranz, Thomas Mayer, Bernhard Kaiser, Wolfram Jaegermann
Summary: This study combined cryo-photoelectron spectroscopy and electrochemical analysis techniques to investigate the p-Si/SiO2/TiO2/H2O system in the context of water-splitting. It found a downward band bending for the p-Si/TiO2 heterojunction and a direct correlation between surface hydroxide species and Ti3+ defect state density. Additionally, a surface water species was identified alongside bulk molecular water in contact with the TiO2 coating. The results allowed for a complete energy level alignment construction with Mott-Schottky analysis.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Environmental Sciences
Mani Preeyanghaa, Vasudevan Vinesh, Bernaurdshaw Neppolian
Summary: Hierarchical CN nanorods with carbon vacancy synthesized via ultrasound-assisted thermal polycondensation method exhibit excellent sonophotodegradation efficiency towards TC antibiotic under ultrasonic irradiation and visible light illumination.
Article
Environmental Sciences
Mani Preeyanghaa, Vasudevan Vinesh, Bernaurdshaw Neppolian
Summary: This study utilized a sonophotocatalytic degradation method with a novel RCN-VO nanocomposite to efficiently remove TC antibiotics, showing a remarkable synergy index and enhanced degradation efficiency. The enhanced activity was attributed to the 1D/2D nanostructure and S-scheme heterojunction formation between RCN and VO.
Article
Chemistry, Physical
Sujay Shekar G. C., Khaled Alkanad, Gubran Alnaggar, Nabil Al-Zaqri, Mohammed Abdullah Bajiri, Thejaswini B., M. D. Dhileepan, Bernaurdshaw Neppolian, Lokanath N. K.
Summary: Creating surface oxygen vacancies in semiconductor photocatalysts can enhance their photocatalytic efficiency. In this study, a CeO2-x nanostructure with surface oxygen vacancies was designed using low-frequency ultrasonic waves, which resulted in improved photocatalytic efficiency while maintaining the intrinsic crystal structure intact. The presence of oxygen vacancies was confirmed through various analyses, and their effects on the photocatalytic redox cycle were studied.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Siddhartha Dam, Abhijit Saha, Shamima Hussain
Summary: The photoresponse properties of Tungsten disulphide (WS2)/Silicon (Si) thin films, synthesised by the e-beam evaporation technique, exhibited high absorbance in the visible range and a type-II heterojunction. Photodetection studies showed a high responsivity of 1.17 AW(-1) at an illumination of 1.6 mWcm(-2) of white light.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Aswathy Rajan, B. Neppolian
Summary: In this study, a new nickel metal-organic framework (Ni-MOF) was integrated with graphitic carbon nitride (g-C3N4) using the solvothermal method for photocatalytic hydrogen production. The amorphous Ni-MOF successfully bonded with g-C3N4 and exhibited significantly higher hydrogen production compared to the crystalline Ni-MOF and other derivatives of g-C3N4. The increased activity can be attributed to the synergistic structural reconstruction and characteristics of g-C3N4/aNi-MOF.
APPLIED MATERIALS TODAY
(2022)
Article
Materials Science, Ceramics
Hafeez Yusuf Hafeez, J. Mohammed, Chifu Ebenezer Ndikilar, Abdussalam Balarabe Suleiman, Rabia Salihu Sa'id, Ibrahim Muhammad
Summary: In this study, a rGO/NiFe2O4-g-C3N4 (RNC-3) hybrid heterostructure photocatalyst was fabricated for efficient charge carrier transfer and high solar fuel (H2) generation. The optimized co-catalysts loadings were determined to be 15 wt% NiFe2O4 and 3 wt% rGO. The results showed that RNC-3 exhibited an improved photocatalytic performance with H2 generation activity of 11,817 mu molg-1h-1, approximately 4 and 76 times higher than NiFe2O4-g-C3N4 and g-C3N4 nanosheets, respectively. Additionally, RNC-3 demonstrated convenient magnetic recovery, practical reusability, and high activity, making it a potential visible-light responsive photocatalyst for efficient water-splitting applications.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Siddhartha Dam, Shamima Hussain
Summary: The photoresponse properties of a MoS2/GaAs heterojunction under ambient light conditions are reported. The heterojunctions formed by chemically deposited MoS2 film on GaAs wafers showed an enhancement in responsivity by two orders and an increase in specific detectivity by six orders.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Review
Chemistry, Physical
Suchinder K. Sharma, Jinu James, Shailendra Kumar Gupta, Shamima Hussain
Summary: The field of persistent luminescence, which had been largely dormant, gained new momentum with the discovery of strontium aluminate phosphor in 1996. Extensive efforts have been made to develop efficient and long-lasting persistent luminescent materials for various applications. The most explored materials emit in the visible wavelength range of 400-650 nm, but the range has been extended beyond 650 nm for biological applications since 2014. Recently, UV-emitting persistent materials have attracted interest for their potential in information storage, phototherapy, and photocatalysis. This review summarizes the recent developments in UV-emitting persistent luminescent materials to inspire young researchers in the field.
Article
Polymer Science
Mandeep Jangra, Abhishek Thakur, Siddhartha Dam, Shamima Hussain
Summary: Freestanding composite films of PVDF and cellulose were synthesized and characterized. The films exhibited hydrophobicity and increased dielectric constant compared to pristine films. A triboelectric nanogenerator fabricated using these films demonstrated a high output power density.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Mandeep Jangra, Abhishek Thakur, Siddhartha Dam, Souvik Chatterjee, Shamima Hussain
Summary: Enhanced dielectric constant (-5 times) in free-standing, flexible composite films of PVDF with MoS2 nanoflakes, synthesized using sol-gel method, was reported. The dielectric constant of the composite films varied with the filler concentration modulation. At 100 Hz, the dielectric constant of the films with 1 wt% filler concentration was found to be -40. A significant enhancement of -900 times in the remanent polarization was obtained for the same composite film. A TENG fabricated from a composite film with 1 wt% filler concentration generated an output power of -18 μW/cm^2.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Thirugnanam Bavani, Mani Preeyanghaa, Bernaurdshaw Neppolian, Jagannathan Madhavan, Dhandapani Balaji
Summary: There is a growing demand for efficient methods to decrease hazardous organic contaminants in wastewater. Here, a novel S-scheme WS2/BiOI heterojunction photocatalyst was prepared and its structural morphology, crystal structure, and optical absorption were studied. The WS2 nanocrystals on 3D-BiOI marigold flowers provided high surface area and increased visible light absorption. The optimized WS2/BiOI photocatalyst exhibited a 98.9% photocatalytic degradation activity with performance retained after 3 consecutive recycling runs.
Article
Chemistry, Physical
Hafeez Yusuf Hafeez, J. Mohammed, Abdussalam Balarabe Suleiman, Chifu Ebenezer Ndikilar, Rabia Salihu Sa'id, Ibrahim Muhammad
Summary: In this study, we have successfully coupled graphene with TiO2-g-C3N4 heterostructured material for efficient solar fuel generation using a one-pot solvothermal approach. The optimized 2 wt.% rGO/TiO2-g-C3N4 (2-RTC) photocatalyst with 40 wt.% TiO2 and 2 wt.% rGO shows a significantly higher solar fuel (H-2) generation rate of 27,254.4 μmolg(-1)h(-1) compared to bare g-C3N4 and also exhibits the highest H-2 production among reported photocatalysts combining graphene, TiO2, and g-C3N4 materials. Additionally, this optimized photocatalyst achieves a solar-to-hydrogen (STH) conversion efficiency of 3.868%, surpassing many previously reported results.
CHEMICAL PHYSICS IMPACT
(2023)
Review
Chemistry, Physical
Mani Preeyanghaa, Ravikumar Dhanalakshmi, A. Aishwarya, Masakazu Anpo, Bernaudshaw Neppolian, Vajiravelu Sivamurugan
Summary: This review summarizes the recent advances in the design and construction of graphitic carbon nitride (CN) based materials, including element doping, heterostructure formation, and surface sensitization, highlighting their unique optoelectronic and charge transfer properties. The potential applications of CN-based materials in photocatalysis, organic synthesis, medical diagnostics, and energy generation are discussed. The challenges and future perspectives for enhancing the performance of CN-based materials and contributing to a sustainable future are also explored.
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING
(2023)
Review
Materials Science, Multidisciplinary
Crescentia Yazhini, Georgeena Mathew, Masakazu Anpo, Guillaume Maurin, Wonyong Choi, Bernaurdshaw Neppolian
Summary: This article reviews recent developments in lanthanide-based metal-organic frameworks (MOFs) as sensor materials for detecting antibiotics, discussing their detection mechanisms and performance evaluation. It provides a solid prospect for designing innovative fluorescent probes.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mani Preeyanghaa, Chitiphon Chuaicham, Sulakshana Shenoy, Bernaurdshaw Neppolian, Keiko Sasaki, Karthikeyan Sekar
Summary: In this article, a sapiential method for producing highly effective oxygen-containing CN with hierarchical porous hollow nanotubes (HTCN) is presented using thermal polycondensation of oxalic acid-assisted supramolecular aggregates. Due to the synergistic effect of spatial charge separation and optical absorption ability, HTCN outperforms pristine CN nanosheets (NSCN) in photocatalytic hydrogen production. This research will provide a novel cognitive perspective and understanding for constructing contemporary hydrogen production photocatalysts.
CHEMICAL COMMUNICATIONS
(2023)
Article
Green & Sustainable Science & Technology
Cameron Bracken, Nathalie Voisin, Casey D. Burleyson, Allison M. Campbell, Z. Jason Hou, Daniel Broman
Summary: This study presents a methodology and dataset for examining compound wind and solar energy droughts, as well as the first standardized benchmark of energy droughts across the Continental United States (CONUS) for a 2020 infrastructure. The results show that compound wind and solar droughts have distinct spatial and temporal patterns across the CONUS, and the characteristics of energy droughts are regional. The study also finds that compound high load events occur more often during compound wind and solar droughts than expected.
Article
Green & Sustainable Science & Technology
Ning Zhang, Yanghao Yu, Jiawei Wu, Ershun Du, Shuming Zhang, Jinyu Xiao
Summary: This paper provides insights into the optimal configuration of CSP plants with different penetrations of wind power by proposing an unconstrained optimization model. The results suggest that large solar multiples and TES are preferred in order to maximize profit, especially when combined with high penetrations of wind and photovoltaic plants. Additionally, the study demonstrates the economy and feasibility of installing electric heaters (EH) in CSP plants, which show a linear correlation with the penetration of variable energy resources.
Article
Green & Sustainable Science & Technology
M. Szubel, K. Papis-Fraczek, S. Podlasek
Article
Green & Sustainable Science & Technology
J. Silva, J. C. Goncalves, C. Rocha, J. Vilaca, L. M. Madeira
Summary: This study investigated the methanation of CO2 in biogas and compared two different methanation reactors. The results showed that the cooled reactor without CO2 separation achieved a CO2 conversion rate of 91.8%, while the adiabatic reactors achieved conversion rates of 59.6% and 67.2%, resulting in an overall conversion rate of 93.0%. Economic analysis revealed negative net present worth values, indicating the need for government monetary incentives.
Article
Green & Sustainable Science & Technology
Yang Liu, Yonglan Xi, Xiaomei Ye, Yingpeng Zhang, Chengcheng Wang, Zhaoyan Jia, Chunhui Cao, Ting Han, Jing Du, Xiangping Kong, Zhongbing Chen
Summary: This study investigated the effect of using nanofiber membrane composites containing Prussian blue-like compound nanoparticles (PNPs) to relieve ammonia nitrogen inhibition of rural organic household waste during high-solid anaerobic digestion and increase methane production. The results showed that adding NMCs with 15% PNPs can lower the concentrations of volatile fatty acids and ammonia nitrogen, and increase methane yield.
Article
Green & Sustainable Science & Technology
Zhong Ge, Xiaodong Wang, Jian Li, Jian Xu, Jianbin Xie, Zhiyong Xie, Ruiqu Ma
Summary: This study evaluates the thermodynamic, exergy, and economic performance of a double-stage organic flash cycle (DOFC) using ten eco-friendly hydrofluoroolefins. The influences of key parameters on performance are analyzed, and the advantages of DOFC over single-stage type are quantified.
Article
Green & Sustainable Science & Technology
Nicolas Kirchner-Bossi, Fernando Porte-Agel
Summary: This study investigates the optimization of power density in wind farms and its sensitivity to the available area size. A novel genetic algorithm (PDGA) is introduced to optimize power density and turbine layout. The results show that the PDGA-driven solutions significantly reduce the levelized cost of energy (LCOE) compared to the default layout, and exhibit a convex relationship between area and LCOE or power density.
Article
Green & Sustainable Science & Technology
Chunxiao Zhang, Dongdong Li, Lin Wang, Qingpo Yang, Yutao Guo, Wei Zhang, Chao Shen, Jihong Pu
Summary: In this study, a novel reversible liquid-filled energy-saving window that effectively regulates indoor solar radiation heat gain is proposed. Experimental results show that this window can effectively reduce indoor temperature during both summer and winter seasons, while having minimal impact on indoor illuminance.
Article
Green & Sustainable Science & Technology
Alessandro L. Aguiar, Martinho Marta-Almeida, Mauro Cirano, Janini Pereira, Leticia Cotrim da Cunha
Summary: This study analyzed the Brazilian Equatorial Shelf using a high-resolution ocean model and found significant tidal variations in the area. Several hypothetical barrages were proposed with higher annual power generation than existing barrages. The study also evaluated the installation effort of these barrages.
Article
Green & Sustainable Science & Technology
Francesco Superchi, Nathan Giovannini, Antonis Moustakis, George Pechlivanoglou, Alessandro Bianchini
Summary: This study focuses on the optimization of a hybrid power station on the Tilos island in Greece, aiming to increase energy export and revenue by optimizing energy fluxes. Different scenarios are proposed to examine the impact of different agreements with the grid operator on the optimal solution.
Article
Green & Sustainable Science & Technology
Peimaneh Shirazi, Amirmohammad Behzadi, Pouria Ahmadi, Sasan Sadrizadeh
Summary: This research presents two novel energy production/storage/usage systems to reduce energy consumption and environmental effects in buildings. A biomass-fired model and a solar-driven system integrated with photovoltaic thermal (PVT) panels and a heat pump were designed and assessed. The results indicate that the solar-based system has an acceptable energy cost and the PVT-based system with a heat pump is environmentally superior. The biomass-fired system shows excellent efficiency.
Article
Green & Sustainable Science & Technology
Zihao Qi, Yingling Cai, Yunxiang Cui
Summary: This study aims to investigate the operational characteristics of the solar-ground source heat pump system (SGSHPS) in Shanghai under different operation modes. It concludes that tandem operation mode 1 is the optimal mode for winter operation in terms of energy efficiency.
Article
Green & Sustainable Science & Technology
L. Bartolucci, S. Cordiner, A. Di Carlo, A. Gallifuoco, P. Mele, V. Mulone
Summary: Spent coffee grounds are a valuable biogenic waste that can be used as a source of biofuels and valuable chemicals through pyrolysis and solvent extraction processes. The study found that heavy organic bio-oil derived from coffee grounds can be used as a carbon-rich biofuel, while solvent extraction can extract xantines and p-benzoquinone, which are important chemicals for various industries. The results highlight the promising potential of solvent extraction in improving the economic viability of coffee grounds pyrolysis-based biorefineries.
Article
Green & Sustainable Science & Technology
Luiza de Queiroz Correa, Diego Bagnis, Pedro Rabelo Melo Franco, Esly Ferreira da Costa Junior, Andrea Oliveira Souza da Costa
Summary: Building-integrated photovoltaics, especially organic solar technology, are important for reducing greenhouse gas emissions in the building sector. This study analyzed the performance of organic panels laminated in glass in a vertical installation in Latin America. Results showed that glass lamination and vertical orientation preserved the panels' performance and led to higher energy generation in winter.
Article
Green & Sustainable Science & Technology
Zhipei Hu, Shuo Jiang, Zhigao Sun, Jun Li
Summary: This study proposes innovative fin arrangements to enhance the thermal performance of latent heat storage units. Through optimization of fin distribution and prediction of transient melting behaviors, it is found that fin structures significantly influence heat transfer characteristics and melting behaviors.
