Using solar energy to catalyse photo-driven processes to address the energy crisis and environmental pollution plays a role in the path to a sustainable society. Many oxide-based materials, especially perovskite oxides, have been widely investigated as catalysts for photocatalysis in energy and environment because of the low-cost and earth-abundant and good performance. At this stage, there is a need to present a scientific-based evaluation of the technologies developed so far and identify the most sustainable technologies and the existing limitations and opportunities for their commercialisation. This work comprehensively investigated the outcomes using various scientometric indices on perovskite oxide-based photo(electro)catalysts for water splitting, nitrogen fixation, carbon dioxide conversion, organic pollutant degradation, current trends and advances in the field. According to the results achieved, efforts in both energy and environment based on perovskite oxides have been initiated in the 1990s and accelerated since the 2010s. China and the United States were identified as the most contributing countries. Based on the results achieved in this study, the main milestones and current trends in the development of this field have been identified. The aim of this research is to provide useful guidelines for the further investigation of perovskite oxide-based catalysts for photoelectrocatalysis and photocatalysis both in energy and environment on the applications such as water splitting, nitrogen fixation, carbon dioxide conversion, and wastewater treatment.

College of Biological Chemical Science and Engineering Jiaxing University Jiaxing 314001 China

Department of Biotechnology Faculty of Applied Sciences UCSI University UCSI Heights 56000 Cheras Kuala Lumpur Malaysia

Department of Chemical and Environmental Engineering Faculty Science and Engineering University of Nottingham Malaysia 43500 Semenyih Selangor Darul Ehsan Malaysia

Department of Chemical Engineering KU Leuven J De Nayerlaan 5 B 2860 Sint Katelijne Waver Belgium

Department of Civil and Mechanical Engineering University of Cassino and Southern Lazio Via di Biasio 43 03043 Cassino Italy

Department of Materials Engineering KU Leuven Kasteelpark Arenberg 44 Leuven 3001 Belgium

Department of Petroleum Engineering School of Engineering Asia Pacific University of Technology and Innovation 57000 Kuala Lumpur Malaysia

Faculty of Applied Sciences UCSI University UCSI Heights 56000 Cheras Kuala Lumpur Malaysia

Key Laboratory of Songliao Aquatic Environment Ministry of Education Jilin Jianzhu University Changchun 130118 China; College of New Energy and Environmental Engineering Nanchang Institute of Technology Nanchang Economic and Technological Development Zone Nanchang 330044 China

School of Energy Science and Engineering Central South University Changsha 410083 Hunan China; School of Electro mechanical Engineering Zhongkai University of Agriculture and Engineering Guangzhou 510225 Guangdong China

School of Resources and Environmental Engineering Shandong University of Technology Zibo 255000 PR China

State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350116 Fujian China

Sustainable Process Integration Laboratory SPIL NETME Centre Faculty of Mechanical Engineering Brno University of Technology VUT Brno Technická 2896 2 616 00 Brno Czech Republic; Department of Chemical Engineering COMSATS University Islamabad Lahore Campus Punjab 54000 Pakistan

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