Reduced graphene oxide-multiwalled carbon nanotubes hybrid film with low Pt loading as counter electrode for improved photovoltaic performance of dye-sensitised solar cells

In this work, the role of reduced graphene oxide (rGO) with hyperbranched surfactant and its hybridisation with multiwalled carbon nanotubes (MWCNTs) and platinum (Pt) nanoparticles (NPs) as counter electrode (CE) were investigated to determine the photovoltaic performance of dye-sensitised solar cells (DSSCs). Sodium 1,4-is(neopentyloxy)-3-(neopentyloxycarbonyl)- 1,4-dioxobutane-2-sulphonate (TC14) surfactant was utilised as dispersing and stabilising agent in electrochemical exfoliation to synthesise graphene oxide (GO) as initial solution for rGO production prior to its further hybridisation and fabrication as thin film. A chemical reduction process utilising hydrazine hydrate was conducted to produce rGO due to the low temperature process and water-based GO solution. Subsequently, hybrid solution was prepared by mixing 1 wt% MWCNTs into the produced rGO solution. TC14-rGO and TC14-rGO_MWCNTs hybrid solution were transferred into fluorine-doped tin oxide substrate to fabricate thin film by spraying deposition method. Finally, the CE films were prepared by coating with thin Pt NPs. Photoanode film was prepared by a two-step process: hydrothermal growth method to synthesise titanium dioxide nanowires (TiO2 NWs) and subsequent squeegee method to apply TiO2 NPs. According to solar simulator measurement, the highest energy conversion efficiency (η) was achieved by using CE-based TC14-rGO_MWCNTs/Pt (1.553%), with the highest short current density of 4.424 mA/cm2. The highest η was due to the high conductivity of CE hybrid film and the morphology of fabricated TiO2 NWs/TiO2 NPs. Consequently, the dye adsorption was high, and the photovoltaic performance of DSSCs was increased. This result also showed that rGO and rGO_MWCNTs hybrid can be used as considerable potential candidate materials to replace Pt gradually

An empirical investigation of the channels that facilitate a total quality culture

It is generally agreed that the culture of an organisation is a function of its values, beliefs and behavioural practices and that the influence of culture on an organisation is powerful and pervasive. There is also broad agreement that total quality management (TQM ) is a management paradigm that propagates certain values, behaviour and working methods. Moreover, that the successful introduction and practice of a total quality management approach requires close attention to, and more often than not modification of, organisational culture. Yet, culture is somewhat intangible, and regardless of the precise cultural aspirations, in order to change or maintain the desired culture an organisation needs a set of facilitating channels. These are mechanisms or necessary conditions that influence, mould and help sustain a desirable cultural orientation. This paper examines the channels that facilitate the development of a total quality culture based on the findings of an investigation of an international sample of organisations widely regarded as leading exponents of TQM

IT process architectures for enterprises development: A survey from a maturity model perspective

During the last years much has been published about IT governance. Close to the success of many governance efforts are the business frameworks, quality models, and technology standards that help enterprises improve processes, customer service, quality of products, and control. In this paper we i) survey existing frameworks, namely ITIL, ASL and BiSL, ii) find relations with the IT Governance framework CobiT to determine if the maturity model of CobiT can be used by ITIL, ASL and BiSL, and (iii) provide an integrated vista of IT processes viewed from a maturity model perspective. This perspective can help us understand the importance of maturity models for increasing the efficiency of IT processes for enterprises development and business-IT alignment

Pollution Prevention and Business Management. Curricula for Schools of Business and Public Health. Volume 1: Modules 1-3

These instructional modules are based on the premise that sustained economic development is dependent upon sustained protection ofthe environment. They also reflect the fact that preventing waste is far more cost effective than managing the waste once it is generated. Pollution prevention not only offers businesses a competitive opportunity, it is a natural extension of sound management practices. Incorporating pollution prevention into business management and government regulation will enhance longterm economic prosperity.published or submitted for publicatio

The Joint Impact of Supply Chain Integration and Quality Management on the Performance of Pork Processing Firms in China

It is widely acknowledged that competition is no longer between individual firms, but between supply chains. A number of studies have indicated that supply chain integration and quality management have become essential to obtain competitive advantage. The present study tests the relationships among supply chain integration, quality management practices and firm performance in 229 Chinese pork slaughterhouses and processors using structural equation modeling. The most important results are that quality management is positively linked with firm performance. As managers put it "Quality is the life of the enterprise". Pork processing managers that wish to improve their performance are therefore advised to invest in quality management. Equally interesting is the indirect link of supply chain integration through quality management with firm performance. To improve quality of their products and reduce uncertainty in hog supply chains, companies are advised to develop more integrated relationships with their suppliers. However, in contrast to earlier studies, the direct link of supply chain integration and firm performance was not significant. This result may indicate that the Chinese pork processing industry is still in an early stage of SC integration.Supply chain management, quality management practices, pork supply chains, firm performance, China, Agribusiness, Livestock Production/Industries,