by Fabien Drault  , Youssef Snoussi  , Camila P. Palombo Ferraz  , Joelle Thuriot-Roukos  , Svetlana Heyte  , Ivaldo Itabaiana Junior  , Maya Marinova  , Sebastien Paul  and Robert Wojcieszak

Received: 25 October 2021;  Published: 13 January 2022;  doi: 10.21926/cr.2201001

Regardless of their size, supported gold nanoparticles are largely used for liquid-phase oxidation reactions. Small gold nanoparticles exhibit good performance during the reduction of organic compounds. The direct reduction of carboxylic acid to aldehyde is a famous and familiar reaction in the field of organic chemistry and is considered as one of the fundamental chemical transformations. Herein, we present Au/hydrotalcite, Au/MgO, and Au/Al2O3 systems as heterogeneous versatile catalysts to realize the oxidation [...]

by Ludmila Velichkina  , Yakov Barbashin  and Alexander Vosmerikov

Received: 10 October 2021;  Published: 01 December 2021;  doi: 10.21926/cr.2104004

The objective of this research was to analyze the effect of different concentrations of nitric and hydrochloric acids on the structural, acidic, and catalytic properties of a post-synthetic treated ZSM-5 type zeolite at various temperatures. The properties of zeolite catalysts were determined using different methods, such as the Brunauer-Emmett-Teller (BET) method for specific surface area, temperature-programmed desorption (TPD) of ammonia method for acidic properties, and a flow-through unit with fixed bed cataly [...]

by Lin Xie  and Donald Kirk

Received: 09 June 2021;  Published: 16 September 2021;  doi: 10.21926/cr.2103003

Fe-rich alloys have been widely studied as catalyst materials for the cathodic oxygen reduction reaction (ORR) in hydrogen fuel cells, and many have shown high activities. The stability of Fe-rich catalysts has also been researched, and some studies have shown promising results using an accelerated stress test (AST), which uses a potential cycling method. However, for commercial fuel cell applications, such as standby power systems, the catalyst has to tolerate a high potential for a long period, which can not be r [...]

by Minato Nakamura  and Yoshinori Murakami

Received: 17 August 2021;  Published: 13 September 2021;  doi: 10.21926/cr.2103002

The photocatalytic reaction involved in TiO2 photocatalysis was investigated using a microreactor coated with TiO2 film on the glass plate attached on one side of the microreactor. It was confirmed that the effect of H2O2 on the photocatalytic degradation efficiency of azo dyes (acid orange 7, acid red 151, and acid yellow 23) was dependent on the polymorphs (anatase and rutile) of TiO2 coated on the glass plate of the UV-irradiated microreactor. Scavengers of holes (KI) and electrons (p-benzoquinone) were added to [...]

by Shiping Wang  , Georg Bendt  and Stephan Schulz

Received: 24 May 2021;  Published: 16 July 2021;  doi: 10.21926/cr.2103001

One-pot synthesis of mesoporous hybrid material consisting of Mn-Co/CoO nanoparticles encapsulated in an N-doped graphene shell decorated with Mo2C nanoparticles (Mo2C-NC@Mn-Co/CoO) was reported. The Mn and Mo components synergistically refined the graphitized carbons due to the interactions with N and C atoms while promoting the stability of the Co/CoO nanoparticles. These components exhibited a beneficial effect on the dispersion of the active metal/metal oxide nanoparticles and the formation of a mesoporous stru [...]

by Vinayak Kaushal  and Allison Pham

Received: 31 December 2025;  Published: 20 August 2026;  doi: 10.21926/aeer.2603028

Sustainable construction practices and robust waste management strategies provide a viable pathway to mitigate these challenges. By integrating resource-efficient design, circular economy principles, and environmentally responsible technologies, the industry can significantly reduce its ecological burden. This paper presents a synthesis of environmental impacts from construction and a practical playbook of interventions spanning design, delivery, operations, and end-of-life. The study is organized as a systems guid [...]

by Aster Woldu Gebrearegay  , Melakuu Tesfaye  and Alemu Gizaw

Received: 14 February 2026;  Published: 19 August 2026;  doi: 10.21926/aeer.2603027

This study evaluated the dynamic performance of raw Cordia africana sawdust for hexavalent chromium (Cr(VI)) removal in a fixed-bed column system under varying operating conditions, using both synthetic solutions and real tannery wastewater. This represents the first comprehensive investigation combining fixed-bed operation, real wastewater validation, triple-model comparison, speciation analysis, and regeneration assessment for this locally abundant Ethiopian biomass. Fixed-bed column experiments were conducted at [...]

by İsmail Cem ÖZKURT

Received: 19 February 2026;  Published: 17 August 2026;  doi: 10.21926/aeer.2603026

Increases in greenhouse gas emissions, a key indicator of climate change, pose significant risks and uncertainties for the agricultural industry. From a theoretical supply-side perspective, greenhouse gas emissions may be associated with agricultural productivity losses and, consequently, with potential upward risks for producer prices. However, the Toda-Yamamoto framework used in this study tests predictive Granger causality rather than the magnitude or sign of a structural price effect. This study examines the pr [...]

by Shivani Kohli  , Sujata Pandit Sharma  , Dolli Chauhan  and Nikita Singh

Received: 08 May 2026;  Published: 13 August 2026;  doi: 10.21926/aeer.2603025

A Considerable amount of peel, rind, core, and fibrous residues are produced from the processing of Jackfruit (Artocarpus heterophyllus Lam.), which are generally discarded, though they contain valuable lignocellulosic components. Limited information is available on the composition of the combined jackfruit processing waste stream. Thus, the present study evaluates the physicochemical and lignocellulosic properties of jackfruit processing waste obtained from local markets and prepared with equal proportions of peel [...]

by Rupesh Kumar Gupta  , Yash Kumar Tiwari  , Arpit Gupta  , Grinedge Yadav  and Swati Gupta

Received: 20 April 2026;  Published: 06 August 2026;  doi: 10.21926/aeer.2603024

Urban thermal environments reflect the relationship between land surface temperature (LST) and anthropogenic activity. The present study analyses seasonal land surface temperature, the Urban Thermal Field Variance Index (UTFVI), and night-time radiance in Jaipur, India from 2014 to 2025 using Landsat 8 Collection 2 and VIIRS Day/Night Band datasets. The Summer (April-June) and winter (November-December) median composites were generated for continuous analysis and for classified assessment. In the study, five LST an [...]