Better surfaces.
Better environments.

Catalysts · 2022 · Volume 12 · Article 690

Surface Inactivation of Human Coronavirus by MACOMA™ UVA-TiO₂ Coupled Photocatalytic Disinfection System

Timsy Uppal, Sivani Reganti, Ezekiel Martin and Subhash C. Verma

This publication concerns a UVA–TiO₂ coupled system. Its experimental conditions should be considered when assessing relevance to a particular coating or application.

DOI: 10.3390/catal12070690

Urban Climate · 2026 · Volume 65 · Article 102795

A simplified method to calculate atmospheric CO₂ equivalency for changing surface albedo

Hashem Akbari · Concordia University

This study presents a simplified method for estimating the regional climate effect of increasing surface reflectance, or albedo, using solar radiation data. Higher-albedo roofs and pavements reflect more sunlight, helping reduce heat absorption and counter warming.

Calculations for approximately 4,400 weather stations indicate a worldwide median of about 2 kg of CO₂-equivalent climate effect per 0.01 increase in albedo over 1 m² of surface. Results vary with location and atmospheric conditions. This is a radiative-forcing equivalence, not physical removal of CO₂ from the atmosphere.

MACOMA’s contribution: The paper’s acknowledgements identify MACOMA Environmental Technologies, Corp., Nevada, USA, among the organizations that partly funded this research.

DOI: 10.1016/j.uclim.2026.102795

ENCAC / ELACAC · 2025 · Conference manuscript

Estimation of atmospheric CO₂ equivalency by albedo modification in Latin American cities

Noelia Alchapar, Claudia Cotrim Pezzuto, Dario Jaime, Fátima Yubero, Lia Toledo Moreira Mota, Ezekiel Martin and Hashem Akbari

Using regional weather data and a Python implementation of Akbari’s methodology, this study estimates the CO₂-equivalent climate effect of increasing urban surface albedo in Mendoza and Posadas, Argentina; Campinas, Brazil; and Asunción, Paraguay.

Co-authorship: Ezekiel Martin is listed as a co-author, with an affiliation to the University of Nevada, Reno, USA.

MACOMA material analysis: The manuscript includes scanning electron microscopy images of MACOMA roof nano-coatings (Figure 6, page 10), illustrating the microstructure of a high-albedo roofing material.

Higher-reflectance roofs and urban surfaces reflect more sunlight, helping reduce heat absorption. The modeled climate effect can be expressed as a CO₂ equivalence and depends on local climate and the change in albedo. This equivalence does not mean the coating captures or removes CO₂ from the air. The manuscript presents albedo modification as complementary to reducing emissions.

Spanish manuscript with abstracts in Spanish, Portuguese and English.

CRRC Summer Newsletter · Issue 2 · July 2026

MACOMA’s Paraguay Projects Featured in the CRRC Newsletter

The Cool Roof Rating Council’s Global Zone features “Cool Roofs in Paraguay: A Growing Success in Heat Mitigation and Sustainability,” by Ezekiel Martin, PhD. The article describes MACOMA’s collaboration with TOPPS Products to implement reflective roof coatings in commercial buildings, warehouses, schools and industrial facilities in Paraguay.

The feature reports observed improvements in roof and indoor temperatures, local applicator training and growing interest in cool-roof solutions. It also acknowledges support from the U.S. Trade Mission in Paraguay and the U.S. Commercial Service in Las Vegas.