Search Results (69)

The development of cost-effective and highly sensitive hydrogen peroxide (H₂O₂) biosensors with robust stability is critical due to the pivotal role of H₂O₂ in biological processes and its broad utility across various applications. In this work, porous ceria hollow microspheres (CeO₂-phm) were synthesized using a solvothermal synthesis method and employed in the construction of an electrochemical biosensor for H₂O₂ detection. The resulting CeO₂-phm featured a uniform pore size centered at 3.4 nm and a high specific surface area of 168.6 m²/g. These structural attributes contribute to an increased number of active catalytic sites and promote efficient electrolyte penetration and charge transport, thereby enhancing its electrochemical sensing performance. When integrated into screen-printed carbon electrodes (CeO₂-phm/cMWCNTs/SPCE), the CeO₂-phm/cMWCNTs/SPCE-based biosensor exhibited a wide linear detection range from 0.5 to 450 μM, a low detection limit of 0.017 μM, and a high sensitivity of 2070.9 and 2161.6 μA·mM⁻¹·cm⁻²—surpassing the performance of many previously reported H₂O₂ sensors. In addition, the CeO₂-phm/cMWCNTs/SPCE-based biosensor possesses excellent anti-interference performance, repeatability, reproducibility, and stability. Its effectiveness was further validated through successful application in real sample analysis. Hence, CeO₂-phm with solvothermal synthesis has great potential applications as a sensing material for the quantitative determination of H₂O₂. Full article

The objective of this study is to examine the impact of Chief Executive Officer (CEO) attributes on corporate performance in Jordan, a representative frontier market. The analysis focuses on four key CEO attributes, comprising two socio-demographic variables—age and educational—and two corporate governance-related ones—tenure and origin. Return on assets (ROA) and return on equity (ROE) are used as proxies for firm performance. Using a sample of 416 firm-year observations from companies listed on the Amman Stock Exchange (ASE) during 2015–2023, the study employs the system GMM methodology to estimate dynamic panel data models, addressing potential endogeneity and capturing the dynamic nature of firm performance. The results show that CEO age has a positive but insignificant effect, whereas CEO education and tenure significantly enhance firm performance. Conversely, CEO origin has a statistically negative impact on firm performance, reflecting the value of insider CEOs. The significant effects of CEO education, tenure, and origin—observed within the models that also incorporated firm- and country-level controls—reflect their incremental contribution to firm performance in frontier markets. Robustness checks, including controls for the COVID-19 pandemic and industry effects, confirm these findings. The study contributes to the literature by demonstrating the applicability of established theories—namely Upper Echelons, Stewardship, Resource Dependence, and Human Capital Theories—while identifying the CEO traits that drive success in frontier markets. It also offers practical guidance for shareholders, board directors, and policymakers in designing effective leadership and governance strategies. Full article

Climate-relevant technological innovation in renewable energy sources, such as solar energy, is essential for mitigating climate change and achieving sustainable development. The recent literature highlights substantial patent activity in China’s solar energy industry, which may contribute to the sector’s success in international markets. This study examines the relationship between patent activity and corporate financial performance in China’s solar energy industry from 2012 to 2022 using panel data analysis. The results indicate that patent applications positively impact firms’ corporate performance, showing a time-lag of approximately 6–7 years. Notably, this positive impact is particularly pronounced for firms located in the eastern region and state-owned enterprises. Additionally, we investigate whether CEO duality affects the relationship between patent applications and firms’ corporate performance, seeking to reveal unique development pathways within the industry. These findings are important for understanding how China’s solar energy sector can advance along sustainable development pathways amid the challenges of climate change. Full article

Inspired by the limited research regarding the influence of CEO succession origin on corporate misconduct, this study draws on organizational identification theory and agency theory to examine this issue. Empirical analysis indicates that insider CEOs significantly constrain corporate misconduct in China. Furthermore, the moderating results indicate that internal control strengthens the negative association between insider CEOs and corporate misconduct, whereas institutional ownership weakens this governance effect. Further analysis confirms that the restraining effect of insider CEOs on corporate misconduct remains robust across different types of misconduct. Overall, our study emphasizes the positive role of insider CEOs from the perspective of CEO succession origins and provides valuable practical implications for controlling corporate misconduct. Full article

The persistent occurrence of antibiotics like chloramphenicol (CAP) in aquatic systems poses serious environmental and public health risks. This study investigates the photocatalytic degradation of CAP using cerium oxide (CeO₂), lanthanum oxide (La₂O₃), and lanthanum-doped cerium oxide (Ce_xLa_yO_2−δ), synthesized via co-precipitation. The catalysts were tested under a solar simulator, UV-A, and UV-C radiation, both with and without hydrogen peroxide (H₂O₂). Structural characterization confirmed successful synthesis of nanometric catalysts, with La doping causing lattice expansion in CeO₂ and a reduction in crystallite size (from 27 nm in CeO₂ to ~20 nm in doped samples). Photolysis alone achieved limited CAP removal (~34–35%), while photocatalysis with La₂O₃ under UV-A and UV-C improved removal up to 58% and 55%, respectively. Complete degradation was obtained with La₂O₃ under UV-C in the presence of H₂O₂ within 15 min. Pareto analysis highlighted the dominant effect of the interaction between radiation and H₂O₂ (43%), while the catalyst type contributed minimally (0.23%). These findings confirm the potential of REE oxides, especially La₂O₃, in advanced oxidation processes and underscore the importance of light source and radical generation over catalyst selection alone. Full article

This study investigates the relationship between CEO characteristics and firm performance across emerging and developed economies using both panel regression and machine learning techniques. Drawing on Upper Echelons Theory, we examine whether CEO age, tenure, gender, founder status, and appointment origin influence Return on Assets (ROA), Return on Equity (ROE), and market-to-book ratio. We apply the fixed and random effects models for inference and deploy random forest and XGBoost models to determine the feature importance of each CEO trait. Our findings show that CEO tenure consistently predicts improved ROE and ROA, while CEO age and founder status negatively affect firm performance. Female CEOs, though not consistently significant in the baseline models, positively influence market valuation in emerging markets according to interaction models. Firm-level characteristics such as size and leverage dominate CEO traits in explaining performance outcomes, especially in machine learning rankings. By integrating machine learning feature importance, this study contributes an original approach to CEO evaluation, enabling firms and policymakers to prioritise leadership traits that matter most. The findings have practical implications for succession planning, diversity policy, and performance-based executive appointments. Full article

This work explores the link between CEO turnover patterns and firms’ climate change exposure in a data set of over two thousand U.S. publicly traded firms. The findings demonstrate that CEO turnover is negatively associated with measures of climate change exposure developed with machine learning based on the frequency of discussions linked to climate change in the firms’ earnings conference calls. The results further indicate that this significant negative relationship exists in the year after the CEO’s departure from the firm, not before their departure. CEO turnover scenarios differ in their impact on a firm’s climate change exposure and sentiment. The focus of a firm’s management and financial analysts covering the firm can shift away from the issues of climate change. The negative and significant relationship with firms’ climate change exposure is observed particularly for forced CEO departures in firings or resignations, as well as for outsider CEO replacements. No significant relationship is found for CEO departures due to retirement or for cases of internal CEO succession. The results provide insights for decision makers, investors and boards of directors trying to evaluate the role of CEO turnover in climate change exposure at firms. Full article

Digital transformation is the process of using digital technologies for creating or modifying existing business processes and customer experience, leveraging cutting-edge technology to meet changing market needs. Disruptions like the COVID-19 pandemic, regional wars, and climate-driven natural disasters create consequential scenarios, e.g., global supply chain disruption creating further demand–supply mismatch for healthcare enterprises. According to KPMG’s 2021 Healthcare CEO Future Pulse, 97% of healthcare leaders reported that COVID-19 significantly accelerated the digital transformation agenda. Successful digital transformation initiatives, for example, digital twins for supply chains, augmented reality, the IoT, and cybersecurity technology initiatives implemented significantly enhanced resiliency in supply chain and manufacturing operations. However, according to another study conducted by Mckinsey & Company, 70% of digital transformation efforts for healthcare enterprises fail to meet their goals. Healthcare enterprises face unique challenges, such as complex regulatory environments, cultural resistance, workforce IT skills, and the need for data interoperability, which make digital transformation a challenging project. Therefore, this study explored potential barriers, enablers, disruption scenarios, and digital transformation use cases for healthcare enterprises. A structured literature review (SLR), followed by thematic content analysis, was conducted to inform the research objectives. A sample of sixty (n = 60) peer-reviewed journal articles were analyzed using research screening criteria and keywords aligned with research objectives. The key themes for digital transformation use cases identified in this study included information processing capability, workforce enablement, operational efficiency, and supply chain resilience. Collaborative leadership as a change agent, collaboration between information technology (IT) and operational technology (OT), and effective change management were identified as the key enablers for digital transformation of healthcare enterprises. This study will inform digital transformation leaders, researchers, and healthcare enterprises in the development of enterprise-level proactive strategies, business use cases, and roadmaps for digital transformation. Full article

Based on the Chinese government’s regulation that imposes a pay cap on the CEOs of state-owned enterprises (SOEs), we investigated how a change in institutional conditions affects firms’ green innovation. Drawing on the career concern theory, we suggest that political promotion incentives are likely to substitute for monetary incentives and influence these CEOs’ decisions and actions because the regulation reduces not only their current but also their future monetary incentives. Given that Chinese governments strongly encourage SOEs to engage in green innovation to solve environmental problems, CEOs who are more successful in this respect can demonstrate a higher level of alignment with government objectives and thus have better chances of political promotion. Therefore, we hypothesized that CEOs of SOEs generate more green innovation than CEOs of privately owned firms. We further argued that the positive relationship between the pay cap regulation and SOE green innovation is stronger in the case of CEOs with political connections and weaker in the case of younger CEOs and CEOs of firms in more munificent industries. Difference-in-difference analyses of a panel dataset including 11,061 firm–year observations of 1549 firms provide support for our hypotheses. Our study contributes to the literature on why and how institutional conditions affect firms’ green innovation. Moreover, our results imply the huge potential of the government in encouraging SOEs to promote green technology development, considering the critical incentivizing role of the political promotion concern of CEOs of SOEs. Full article

While outside chief executive officers (CEOs) are often viewed as catalysts for strategic change compared to their inside counterparts, this study reveals their potential to undermine firms’ environmental responsibility. Integrating agency theory with social capital theory, we investigate whether and how board-level social capital can moderate the sustainability risks associated with outside CEO succession. Using a panel dataset of 989 pollution-intensive Chinese firms from 2010 to 2022, we apply propensity score matching (PSM) to reduce endogeneity in CEO succession decisions, followed by fixed-effects regressions. The empirical results show that outside CEOs, particularly during their early tenure, are more likely to prioritize short-term financial performance over environmental goals—due to limited firm-specific knowledge and heightened external pressure. However, external board social capital (e.g., ties to government and industry associations) enhances resource access and post-appointment accountability, while internal social capital (e.g., co-working experience among directors) establishes common norms that facilitate strategic continuity. This study positions board social capital as a relational governance mechanism that complements formal oversight. The findings contribute to succession and environmental research by linking executive origin to sustainability outcomes and provide practical guidance on leveraging board networks to support leadership transitions. Full article

Research shows that strategic change can reshape a company’s competitive advantage and significantly impact organizational performance. This study examines the role of Intellectual Humility (IH) in driving strategic change, particularly in the context of external successor CEOs. The overall aim of the study is to explore how external successor CEOs’ IH influences strategic change, and to uncover the underlying mechanisms at play. Based on the Upper Echelons Theory, the paper proposes a moderated mediation model to explore how strategic change occurs during external succession. It highlights the mediating role of strategic execution between IH and strategic change, and the moderating effect of organizational learning (OL). Data from 391 valid responses to electronic questionnaires from CEOs of companies established for over two years were analyzed. The results show that external successor CEOs’ IH positively influences strategic change, with strategic execution mediating this effect. However, organizational learning was found to have no significant moderating effect on this relationship. Our study fills a gap in the literature by highlighting IH as a key factor in external CEO succession. It challenges traditional views on succession and demonstrates how IH can enhance strategic execution and innovation. The findings suggest that IH should be a critical criterion in CEO selection, especially during leadership transitions, to optimize strategic change and improve long-term organizational success. Full article

In this research endeavor, we investigate the potential influence exerted by ESG performance on the market capitalization of non-financial corporations included within the UK FTSE All-Share Index during the eleven-year period spanning 2010 to 2021. Integrating insights from Resource-Based View and Stakeholder Theory, this research extends the literature by considering the moderating effect of governance on the ESG–market capitalization association. This study analyzes a comprehensive dataset of UK firms, employing robust econometric techniques to substantiate its conclusions. The results demonstrate a robust positive association between the overall ESG pillars and market capitalization. Environmental, social, and governance performances independently contribute to an increased market value. The analysis reveals that firms with superior internal governance structures, characterized by the presence of independent board members, board size, an independent audit committee, and the implementation of a split CEO–chair structure, experience a magnified positive impact from ESG disclosures on market capitalization. Effective governance mechanisms enhance the credibility and effectiveness of ESG initiatives, aligning them with stakeholder expectations and regulatory standards. This alignment fosters trust and cooperation, driving better financial performance and increasing market value. This research adds its voice to the increasingly compelling body of evidence that underscores the financial advantages associated with ESG integration and highlights the critical role of internal governance in amplifying these benefits. The findings have significant implications for policymakers, investors, and corporate managers. They advocate for the strategic incorporation of ESG criteria into corporate governance frameworks to achieve sustainable financial success. Full article

In the corporate strategy arena, the concept of ecosystems has emerged as a transformative approach to promote competitive advantage, growth, and innovation. Corporate ecosystems enable companies to benefit from interconnections among diverse partners, products, and services to deliver enhanced value to customers. However, the process of ecosystem creation represents a significant challenge for CEOs, as they must analyze a wide number of alternative sectors, partners, business cases, and other critical elements. Particularly, as it is a strategic decision, it lies beyond the traditional approach of risk-return by incorporating other factors, e.g.: the feasibility, desirability and sustainability of each alternative. This paper investigates how computer-supported optimization algorithms can help to solve the complex problem faced by CEOs when making these factors to create a successful and sustainable ecosystem. The paper shows how a CEO can make informed strategic decisions by identifying the best projects to include in the ecosystem portfolio, balancing financial risk and return with technical feasibility, customer appeal, and technical considerations. Full article

Mesoporous materials with high surface area, large pore volume, and adjustable pore size are promising in the fields of adsorption and heterogeneous catalysis. In this work, ordered mesoporous ceria structures were successfully prepared via nanocasting using SBA-15 as a template, with Ce(NO₃)₃·6H₂O or CeCl₃·7H₂O as ceria precursors. The materials were characterized before and after template removal. The CeO₂ crystallite size in the CeO₂/SBA-15 composites increases with successive impregnations until it reaches the pore size of the SBA-15. Upon removal of the SBA-15 template, the synthesized materials exhibit pore diameters corresponding to the wall thickness of the SBA-15, evidencing that the inverted structure was obtained. Mesoporous ceria exhibits increasingly ordered structure up to five successive impregnations with 1.3 mmol_Ce/g_SBA-15. Using cerium chloride as a precursor, highly ordered structures were reached after only three impregnations. The feasibility of this synthesis in fewer steps (1, 3, and 5), employing the same amount of Ce precursor (6.7 mmol_Ce/g_SBA-15), was also studied. Results show a higher ordering degree and oxygen mobility capacity at higher impregnation steps. The mesostructured ceria samples exhibit significantly higher oxygen mobility than commercial bulk ceria, along with high thermal stability, which highlights the usefulness of these structures. Full article

The present study focuses on the fabrication and characterization of cerium oxide (CeO₂)-doped yttria-stabilized zirconia (YSZ) composite particles, aiming to enhance the durability of thermal barrier coatings (TBCs) in high-temperature applications such as gas turbines and aircraft engines. The incorporation of CeO₂ into the YSZ matrix was motivated by the need to address the limitations of YSZ coatings, particularly their phase transformation and thermal degradation at temperatures exceeding 1300 °C. The synthesis of a composite with a core–shell structure, where CeO₂ is doped into YSZ particles, was pursued to improve the thermal stability and reduce the thermal conductivity of the material. The fabrication process involved surface treatment of YSZ particles with HCl and NH₄OH to enhance their dispersion characteristics, followed by the adsorption of CeO₂ nanoparticles precipitated from Ce precursors. The study revealed a reduction in the average particle size and improved the dispersion stability of the surface-treated YSZ. Notably, base-treated YSZ exhibited increased CeO₂ adsorption due to the strong interaction between Ce ions and surface hydroxyl groups. The successful formation of the YSZ@CeO₂ core–shell structure was confirmed through XRD, HR-TEM, and SAED analyses. The study suggest that base-treated YSZ@CeO₂ composites have the potential to extend the operating life and improve the performance of TBCs under extreme temperature conditions, which may contribute to the development of more resilient thermal barrier systems. Full article