| To date, silver nanowires (AgNWs) can be routinely synthesized. However, the preparation of AgNWs without any additives has not yet reached a similar level of control, and its preparation method and control mechanism have always been the focus and difficulty of research. Based on the analysis of more than 40 related literatures in the past 20 years，the synthetic methods and control mechanism employed to prepare silver nanowires without auxiliary agents are summarized, including polyol method, seeded method, template method, wet chemical method, photo-reduction method, electrochemical reduction and green synthesis method. Their advantages and disadvantages of the above methods are summarized, analyzed and prospected. |
